Traxxas 68077-1 User Manual

MODEL 68077-1

owner’s manual

INTRODUCTION

TABLE OF CONTENTS

2 BEFORE YOU

PROCEED

4 SAFETY

PRECAUTIONS

6 ANATOMY OF THE

SLASH 4x4 ULTIMATE

7 TOOLS, SUPPLIES, AND

REQUIRED EQUIPMENT

8 QUICK START:

GETTING UP TO SPEED

9 TRAXXAS TQ

AND VELINEON

BRUSHLESS POWER

SYSTEM

17 ADJUSTING THE

ELECTRONIC SPEED

CONTROL

19 DRIVING YOUR MODEL

22 BASIC TUNING

ADJUSTMENTS

24 MAINTAINING

YOUR MODEL

26 ADVANCED TUNING

ADJUSTMENTS

32 TQ

i

ADVANCED

TUNING GUIDE

i

RADIO

This manual contains the instructions you will need to operate and
maintain your model so that you can enjoy it for years to come. We want
you to feel confident that you own one of the best-performing models
in the market and that it is backed by a team of professionals who aim to
provide the highest level of factory support possible. Traxxas models are
about experiencing total performance and satisfaction, not just with your
model, but also with the company that stands behind it.

We know you’re excited about getting your new model on the road, but
it’s very important that you take some time to read through the Owner’s
Manual. This manual contains all the necessary set-up and operating
procedures that will allow you to unlock the performance potential that

Traxxas engineers designed into your model. Also be sure to read and
follow the precautions and warnings in this manual and on any labels or
tags attached to your model. They are there to educate you on how to
operate your model safely and also get maximum life and performance
from your model.

Even if you are an experienced R/C enthusiast, it’s important to read
and follow the procedures in this manual.

Thank you again for going with Traxxas. We work hard every day to
ensure you receive the highest level of customer satisfaction possible.
We truly want you to enjoy your new model!

BEFORE YOU PROCEED

Carefully read and follow all instructions in this and any accompanying
materials to prevent serious damage to your model. Failure to follow
these instructions will be considered abuse and/or neglect.

Before running your model, look over this entire manual and examine
the model carefully. If for some reason you decide it is not what you
wanted, then do not continue any further. Your hobby dealer absolutely

cannot accept a model for return or exchange after it has been run.

WARNINGS, HELPFUL HINTS, & CROSS-REFERENCES

Throughout this manual, you’ll notice warnings and helpful hints
identified by the icons below. Be sure to read them!

An important warning about personal safety or avoiding
damage to your model and related components.

Special advice from Traxxas to make things easier
and more fun.

Refers you to a page with a related topic.

REGISTERING YOUR MODEL

In order to serve you better as our customer, please register your
product within 10 days of your purchase online at Traxxas.com/register.

SUPPORT

If you have any questions about your model or its
operation, call the Traxxas Technical Support Line toll-free
at: 1-888-TRAXXAS (1-888-872-9927)*

Technical support is available Monday through Friday
from 8:30am to 9:00pm central time. Technical assistance
is also available at Traxxas.com/support. You may also e-mail customer
support with your question at [e-mail]. Join thousands of
registered members in our online community at Traxxas.com.

Traxxas offers a full-service, on-site repair facility to handle any of your
Traxxas service needs. Maintenance and replacement parts may be
purchased directly from Traxxas by phone or online at BuyTraxxas.com.
You can save time, along with shipping and handling costs, by purchasing
replacement parts from your local dealer.

Do not hesitate to contact us with any of your product support needs.
We want you to be thoroughly satisfied with your new model!

Traxxas.com/register

Quick Start

This manual is designed with a Quick Start path
that outlines the necessary procedures to get
your model up and running in the shortest time possible. If you are an
experienced R/C enthusiast you will find it helpful and fast. Be sure and
read through the rest of the manual to learn about important safety,
maintenance, and adjustment procedures. Turn to page 8 to begin.

*Toll-free support is available to U.S. residents only.

2 • SLASH 4X4 ULTIMATE

WHY IT’S THE ULTIMATE

The next-generation Slash 4X4 Ultimate represents Ready-To-Race®
performance at the highest level. The Slash 4X4 Ultimate pushes the performance envelope;
its new Low-CG chassis delivers superior handling and maximum corner speed and new
13mm bore GTR hard-anodized aluminum shocks provide consistent damping and smooth
suspension action lap-after-lap. The result is lightning-fast steering response and smooth,
consistent damping that raises the bar even higher on Slash 4X4 handling and precise
control. The TQi Radio System with the Traxxas Link Wireless Module and Slash 4X4 Ultimate’s

factory-installed telemetry enable real-time data capture and set the standard for tuning
ease and versatility. To truly make this the Ultimate Slash 4X4, the specs are completed with
nearly every factory option available, from aluminum suspension components to a sealed,
silicone-filled differential. Simply put, it’s the best of the best.

Aluminum C-hubs and Steering Blocks

Series 4 4200mAh NiMH Battery

FCC Compliance

This device contains a module that complies with the limits for a Class B digital device as described in part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.

The limits for a Class B digital device are designed to provide reasonable protection against harmful interference in residential settings. This product generates, uses and can radiate radio frequency energy, and, if not operated in accordance with the instructions, may cause
harmful interference to radio communications. The user is cautioned that changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

Canada, Industry Canada (IC)

This Class B digital apparatus complies with Canadian ICES-003 and RSS-210. This device complies with Industry Canada license exempt RSS standard(s). Operation is subject to the following two conditions: This device may not cause interference, and This device must accept
any interference, including interference that may cause undesired operation of the device.

Radio Frequency (RF) Exposure Statement

This equipment complies with radio frequency exposure limits set forth by FCC and Industry Canada for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body or
bystanders and must not be co-located or operating in conjunction with any other antenna or transmitter.

Entire contents ©2015 Traxxas. Traxxas, Ready-To-Race, Ready-To-Win, Slash, Velineon, and ProGraphix are trademarks or registered trademarks of
Traxxas. Other brand names and marks are the property of their respective holders and are used only for purposes of identification. No part of this
manual may be reproduced or distributed in print or electronic media without the express written permission of Traxxas. Specifications are subject to
change without notice.

Aluminum Wheel nuts

SCT Tires with

S1 Racing Compound

(Style varies by model)

Aluminum Rear Hub Carriers

Hard-Anodized PTFE

Coated GTR Shocks

Traxxas
6200 Traxxas Way
McKinney, TX 75070
Phone: [phone]
Toll-free 1-888-TRAXXAS

Front and Rear Sway Bars

Optional Included

Center Differential

Internet:
Traxxas.com
E-mail:
[e-mail]

SAFETY PRECAUTIONS

All instructions and
precautions outlined in this
manual should be strictly
followed to ensure safe
operation of your model.

This model is not intended
for use by children under
14 years of age without the
supervision of a responsible
and knowledgeable adult.
Gearing and battery choice
(see LiPo Batteries, right)
affect the skill level of the
model. See chart below.

Gearing: Stock Pinion
Battery: 7-Cell NiMH

*

Voltage

: 8.4V

mAh: 3000+mAh

Gearing: Opt. Pinion
Battery: 7-Cell NiMH

*

Voltage

: 8.4V

mAh: 3000+mAh

Gearing: Stock Pinion
Battery: 3S 20C LiPo

*

Voltage

: 11.1V

mAh: 5000+ mAh

Gearing: Opt. Gearing
Battery: 3S 20C LiPo

*

Voltage

: 11.1V

*Nominal

mAh: 5000+ mAh

See the gearing chart on
page 26 for more information.

1

4 • SLASH 4X4 ULTIMATE

All of us at Traxxas want you to safely enjoy your new model.
Operate your model sensibly and with care, and it will be exciting,
safe, and fun for you and those around you. Failure to operate your
model in a safe and responsible manner may result in property
damage and serious injury. The precautions outlined in this manual
should be strictly followed to help ensure safe operation. You alone
must see that the instructions are followed and the precautions are
adhered to.

Important Points to Remember

• Your model is not intended for use on public roads or congested
areas where its operation can conflict with or disrupt pedestrian
or vehicular traffic.

• Never, under any circumstances, operate the model in crowds of
people. Your model is very fast and could cause injury if allowed
to collide with anyone.

• Because your model is controlled by radio, it is subject to radio
interference from many sources that are beyond your control.
Since radio interference can cause momentary losses of radio
control, always allow a safety margin in all directions around the
model in order to prevent collisions.

• The motor, battery, and speed control can become hot during
use. Be careful to avoid getting burned.

• Don’t operate your model at night, or anytime your line of sight to
the model may be obstructed or impaired in any way.

• Most importantly, use good common sense at all times.

Batteries and Battery Charging

Your model uses rechargeable batteries that must be handled with
care for safety and long battery life. Make sure to read and follow
all instructions and precautions for charging and maintaining the
batteries. It is your responsibility to charge and care for the battery
packs properly. In addition to your battery and charger instructions,
here are some more tips to keep in mind.

• Do not charge batteries inside of an automobile. Do not charge
batteries while driving in an automobile. The charger is equipped
with a long cord intended to allow the battery to be charged
outside of an automobile when using the automobile’s auxiliary
power socket. If the cord will not reach outside of the automobile,
find another power source.

• Never charge batteries on wood, cloth, carpet or on any other
flammable material.

• Do not operate the charger in a cluttered space, or place objects
on top of the charger or battery.

• If a battery gets hot to the touch during the charging process
(temperature greater than 140°F / 60°C), disconnect the battery
fromthe charger and discontinue charging immediately.

• Always store battery packs safely out of the reach of children and
pets.

• Do not short-circuit the battery pack. This may cause burns and
severe damage to the battery pack and create the risk of fire.

• Do not expose the charger to water or moisture.

• Do not disassemble the charger.

• Use the supplied charger to charge the included battery. See
“Charging the Battery Pack” on page 12.

• Never leave batteries to charge unattended.

• Remove the battery from the model while charging.

• Always unplug the battery from the electronic speed control
when the model is not in use and when it is being stored or
transported.

• Allow the battery pack to cool off between runs (before charging).

• Children should have responsible adult supervision when
charging and handling batteries.

• Do not use battery packs that have been damaged in any way.

• Do not use battery packs that have damaged wiring, exposed
wiring, or a damaged connector.

• Do not burn or puncture the batteries. Toxic materials could be
released. If eye or skin contact occurs, flush with water.

• Store the battery pack in a dry location, away from heat sources
and direct sunlight.

• Nickel Metal Hydride batteries must be recycled or disposed of
properly.

Recycling Your Traxxas Power Cell NiMH Battery

Traxxas strongly encourages you to recycle your Power Cell NiMH
battery when it has reached the end of its useful life. Do not throw

your battery in the trash. All Power Cell NiMH battery packs

display the RBRC (Rechargeable Battery Recycling Corporation)
icon, indicating they are recyclable. To find a recycling center near
you, ask your local hobby dealer or visit www.call2recycle.org.

SAFETY PRECAUTIONS

LiPo Batteries

Lithium Polymer (LiPo) batteries are becoming popular for use
in R/C models due to their compact size, high energy density,
and high-current output. However, these types of batteries
require special care and handling procedures for long life and
safe operation. WARNING: LiPo batteries are intended only for

advanced users that are educated on the risks associated with
LiPo battery use. Traxxas does not recommend that anyone
under the age of 14 use or handle LiPo battery packs without the
supervision of a knowledgeable and responsible adult.

Your model is able to use LiPo batteries with nominal voltage not
to exceed 11.1 volts (3S packs). LiPo batteries have a minimum
safe discharge voltage threshold that should not be exceeded. The
Velineon VXL-3s electronic speed control is equipped with built-in
Low-Voltage Detection that alerts the driver when LiPo batteries
have reached their minimum voltage (discharge) threshold. It is the

driver’s responsibility to stop immediately to prevent the battery
pack from being discharged below its safe minimum threshold.

Low-Voltage Detection on the speed control is just one part of
a comprehensive plan for safe LiPo battery use. It is critical for

you, the user, to follow all other instructions supplied by the
battery manufacturer and the charger manufacturer for proper
charging, use, and storage of LiPo batteries. Do not attempt
to charge LiPo batteries with the Traxxas charger included in
this package. Make sure you understand how to use your LiPo
batteries. Be aware that Traxxas shall not be liable for any special,

indirect, incidental, or consequential damages arising out of the
installation and/or use of LiPo batteries in Traxxas models. If you

have questions about LiPo battery usage, please consult with
your local hobby dealer or contact the battery manufacturer.

As a reminder, all batteries should be recycled at the end of their
useful life.

DO NOT ATTEMPT TO CHARGE LIPO BATTERIES OR ANY OTHER
TYPE OF BATTERY WITH THE INCLUDED TRAXXAS CHARGER.

Speed Control

• Disconnect the Batteries: Always disconnect the battery pack

from the speed control when not in use.

• Transmitter on First: Switch on your transmitter first before
switching on the speed control to prevent runaways and erratic
performance.

• Don’t Get Burned: The heat sink can get extremely hot, so be
careful not to touch it until it is cool. Supply adequate airflow for
cooling.

• Use Stock Connectors: If you decide to change the battery or
motor connectors, only change one battery or motor connector at
a time. This will prevent damage from accidentally mis-wiring the
speed control. Please note that modified speed controls can be
subject to a rewiring fee when returned for service. Removing the
battery connector on the speed control or using the same-gender
connectors on the speed control will void the product’s warranty.

• Insulate the Wires: Always insulate exposed or damaged wiring
with heat shrink tubing to prevent short circuits.

SLASH 4X4 ULTIMATE • 5

ANATOMY OF THE SLASH 4X4 ULTIMATE

Half Shaft

Turnbuckle
(Rear Camber Link)

Rear Body Mount

Rear Sway Bar

Rear Bumper

Rear Hub

Carrier

Battery Compartment

Battery Hold-Down

Battery

Traxxas High-Current
Connector

Front Body Mount

Front Suspension
Arm

Front
Sway Bar

Chassis

Drive

Shaft

Steering Block

(Axle Carrier)

Caster Block

(C-Hub)

Front

Shock Tower

Front Bumper

Rear Shock Tower

Rear Suspension Arm

Slipper Clutch

RPM Sensor Wire

Motor Temperature Sensor

6 • SLASH 4x4 ULTIMATE

Motor
(Velineon 3500)

Electronic Speed
Control (VXL-3s)

Nerf Bar

Battery Voltage Sensor Wire

Receiver Box

LED Light

Pipe

Antenna
Mount

Steering
Servo

Turnbuckle (Toe Link)

Shock

(Damper)

Turnbuckle

(Front Camber Link)

Half Shaft

TOOLS, SUPPLIES, AND REQUIRED EQUIPMENT

Your model comes with a set of specialty metric tools. You’ll need to purchase other items, available from your hobby dealer, to operate
and maintain your model.

Supplied Tools and Equipment

2.5mm “L” wrench

Shock wrench

2.0mm “L” wrench 1.5mm “L” wrench 4-way wrenchU-joint wrench

for use with
LiPo batteries

Body clips and

body washers

Foam battery spacer

Suspension multi-tool Optional center

8mm/4mm wrench

Optional

pinion gear

differential

For more information on
batteries, see Use the Right
Batteries on page 12.

Recommended Equipment

These items are not required
for the operation of your
model, but are a good idea to
include in any R/C toolbox:

• Safety glasses

• Traxxas Ultra Premium Tire
Glue, Part #6468 (CA glue)

• Hobby knife

• Side cutters and/or needle
nose pliers

• Philips screwdriver

• Soldering iron

7-cell NiMH battery pack* NiMH battery charger*

Required Equipment

4 AA alkaline batteries

*Battery and charger style are subject to change and may vary from images.

SLASH 4X4 ULTIMATE • 7

The Quick Start Guide is
not intended to replace the
full operating instructions
available in this manual.
Please read this entire
manual for complete
instructions on the proper
use and maintenance of
your model.

QUICK START: GETTING UP TO SPEED

The following guide is an overview of the procedures for getting your model running. Look for the Quick Start logo on the bottom
corners of Quick Start pages.

1. Read the safety precautions on page 4 6. Check servo operation • See page 15

For your own safety, understand where carelessness and misuse
could lead to personal injury and product damage.

2. Charge the battery pack • See pages 12 7. Range test the radio system • See page 15

Fully charge the included battery pack. Begin charging
your battery right away.

3. Install batteries in the transmitter • See page 12 8. Detail your model • See sidebar, page 9

The transmitter requires 4 AA alkaline batteries (sold separately). Apply other decals if desired.

4. Install the battery pack in the model • See page 13 9. Drive your model • See page 19

Your model requires a fully charged battery pack. Driving tips and adjustments for your model.

5. Turn on the radio system • See page 14 10. Maintaining your model • See page 24

Make a habit of turning the transmitter on first and off last. Follow these critical steps to maintain the performance

Make sure the steering servo is working correctly.

Follow this procedure to make sure your radio system works properly at
a distance and that there is no interference from outside sources.

of your model and keep it in excellent running condition.

Look for the Quick Start
logo at the bottom of
Quick Start pages.

8 • SLASH 4X4 ULTIMATE

TRAXXAS TQi RADIO & VELINEON POWER SYSTEM

INTRODUCTION

Your model includes the latest Traxxas TQi 2.4GHz transmitter with
Traxxas Link™ Model Memory. The transmitter’s easy-to-use design
provides instant driving fun for new R/C enthusiasts, and also offers
a full compliment of pro-level tuning features for advanced users
– or anyone interested in experimenting with the performance of
their model. The steering and throttle channels feature adjustable
Exponential, End Points, and Sub-Trims. Steering and braking Dual
Rate are also available. Many of the next-level features are controlled
by the Multi-Function knob, which can be programmed to control
a variety functions. The detailed instructions (page 32) and Menu
Tree (page 35) included in this manual will help you understand and
operate the advanced functions of the new TQi radio system. For
additional information and how-to videos, visit Traxxas.com.

RADIO AND POWER SYSTEM TERMINOLOGY

Please take a moment to familiarize yourself with these radio and
power system terms. They will be used throughout this manual.
A detailed explanation of the advanced terminology and features of
your new radio system begins on page 32.

2.4GHz Spread Spectrum – This model is equipped with the latest
R/C technology. Unlike AM and FM systems that require frequency
crystals and are prone to frequency conflicts, the TQi system
automatically selects and locks onto an open frequency and offers
superior resistance to interference and “glitching.”

BEC (Battery Eliminator Circuit) - The BEC can either be in the

receiver or in the ESC. This circuit allows the receiver and servos
to be powered by the main battery pack in an electric model. This
eliminates the need to carry a separate pack of 4 AA batteries to
power the radio equipment.

Brushless Motor - A D/C brushless motor replaces the brushed motor’s

traditional commutator and brush arrangement with intelligent
electronics that energize the electromagnetic windings in sequence
to provide rotation. Opposite of a brushed motor, the brushless
motor has its windings (coils) on the perimeter of the motor can and
the magnets are mounted to the spinning rotor shaft.

Cogging - Cogging is a condition sometimes associated with

brushless motors. Typically it is a slight stutter noticed when
accelerating from a stop. It happens for a very short period as the
signals from the electronic speed control and the motor synch

Current - Current is a measure of power flow through the

ESC (Electronic Speed Control) - An electronic speed control is the

Frequency band - The radio frequency used by the transmitter to

kV Rating - Brushless motors are often rated by their kV number. The

LiPo - Abbreviation for Lithium Polymer. Rechargeable LiPo battery

mAh – Abbreviation for milliamp hour. A measure of the capacity of

Neutral position - The standing position that the servos seek when

NiCad - Abbreviation for nickel-cadmium. The original rechargeable

with each other. The VXL-3s electronic speed control is optimized
to virtually eliminate cogging.

electronics, usually measured in amps. If you think of a wire as a
garden hose, current is a measure of how much water is flowing
through the hose.

electronic motor control inside the model. The VXL-3s electronic
speed control uses advanced circuitry to provide precise, digital
proportional throttle control. Electronic speed controls use power
more efficiently than mechanical speed controls so that the
batteries run longer. An electronic speed control also has circuitry
that prevents loss of steering and throttle control as the batteries
lose their charge.

send signals to your model. This model operates on the 2.4GHz
direct-sequence spread spectrum.

kV rating equals no-load motor rpm with 1 volt applied. The kV
increases as the number of wire turns in the motor decreases. As the
kV increases, the current draw through the electronics also increases.
The Velineon 3500 motor is a 3500 kV motor optimized for the best
speed and efficiency in lightweight 1/10 scale models.

packs are known for their special chemistry that allows extremely
high energy density and current handling in a compact size. These
are high-performance batteries that require special care and
handling. For advanced users only.

the battery pack. The higher the number, the longer the battery
will last between recharges.

the transmitter controls are at the neutral setting.

hobby pack, NiCad batteries have very high current handling, high
capacity, and can last up to 1000 charging cycles. Good charging
procedures are required to reduce the possibility of developing a
“memory” effect and shortened run times.

Applying the Decals

The main decals for your
model have been applied at
the factory. Additional decals
are printed on self-adhesive
clear mylar and are die-cut for
easy removal. Use a hobby
knife to lift the corner of a decal
and lift it from the backing.

To apply the decals, place one
end down, hold the other end
up, and gradually smooth the
decal down with your finger
as you go. This will prevent air
bubbles. Placing both ends of
the decal down and then trying
to smooth it out will result in
air pockets. Look at the photos
on the box for typical decal
placement.

8

SLASH 4X4 ULTIMATE • 9

TRAXXAS TQi RADIO & VELINEON POWER SYSTEM

To prevent loss of radio range
do not kink or cut the black wire,
do not bend or cut the metal tip,
and do not bend or cut the white
wire at the end of the metal tip.

Correct

NoNo No

NiMH - Abbreviation for nickel-metal hydride. Rechargeable NiMH

batteries offer high current handling and much greater resistance
to the “memory” effect. NiMH batteries generally allow higher
capacity than NiCad batteries. They can last up to 500 charge
cycles. A peak charger designed for NiMH batteries is required for
optimal performance.

Receiver - The radio unit inside your model that receives signals from

the transmitter and relays them to the servos.

Resistance - In an electrical sense, resistance is a measure of how an

object resists or obstructs the flow of current through it. When flow
is constricted, energy is converted to heat and is lost. The Velineon
power system is optimized to reduce electrical resistance and the
resulting power-robbing heat.

Rotor - The rotor is the main shaft of the brushless motor. In a

brushless motor, the magnets are mounted to the rotor, and the
electromagnetic windings are built into the motor housing.

Sensored - Sensored refers to a type of brushless motor that

uses an internal sensor in the motor to communicate rotor position
information back to the electronic speed control. The VXL-3s electronic
speed control is able to use sensored motors when applications benefit
from them (such as some sanctioned racing classes).

Sensorless - Sensorless refers to a brushless motor that uses

advanced instructions from an electronic speed control to provide
smooth operation. Additional motor sensors and wiring are not
required. The VXL-3s electronic speed control is optimized for
smooth sensorless control.

Servo - Small motor unit in your model that operates the steering

mechanism.

Solder Tabs - Accessible, external contacts on the motor that allows

for easy wire replacement. The Velineon 3500 is equipped with
solder tabs.

Transmitter - The hand-held radio unit that sends throttle and

steering instructions to your model.

Trim - The fine-tuning adjustment of the neutral position of the

servos made by adjusting the throttle and steering trim knobs on
the face of the transmitter. Note: The Multi-Function knob must be
programmed to serve as a throttle trim adjustment.

Thermal Shutdown Protection - Temperature sensing electronics

used in the VXL-3s electronic speed control detect overloading and
overheating of the transistor circuitry. If excessive temperature is
detected, the unit automatically shuts down to prevent damage to
the electronics.

2-channel radio system - The TQi radio system, consisting of

the receiver, the transmitter, and the servos. The system uses
two channels: one to operate the throttle and one to operate
the steering.

Voltage -

Voltage is a measure of the electrical potential difference
between two points, such as between the positive battery terminal
and ground. Using the analogy of the garden hose, while current is
the quantity of water flow in the hose, voltage corresponds to the
pressure that is forcing the water through the hose.

IMPORTANT RADIO SYSTEM PRECAUTIONS

• Do not kink the receiver’s antenna wire. Kinks in the antenna wire
will reduce range.

• DO NOT CUT any part of the receiver’s antenna wire. Cutting the
antenna will reduce range.

• Extend the antenna wire in the model as far as possible for
maximum range. It is not necessary to extend the antenna wire out
of the body, but wrapping or coiling the antenna wire should be
avoided.

• Do not allow the antenna wire to extend outside the body without
the protection of an antenna tube, or the antenna wire may get
cut or damaged, reducing range. It is recommended to keep the
wire inside the body (in the antenna tube) to prevent the chance
of damage.

10 • SLASH 4X4 ULTIMATE

TRAXXAS TQi RADIO & VELINEON POWER SYSTEM

Your model is equipped with the newest TQi 2.4GHz transmitter

with Traxxas Link™ Model Memory. The transmitter has two
channels for controlling your throttle and steering. The receiver
inside the model has 5 output channels. Your model is equipped
with one servo and an electronic speed control.

TRANSMITTER AND RECEIVER

Set Button

Red/Green Status LED

see page 33 for more info

Menu Button

Steering
Trim

Multi-Function
Knob

Throttle
Trigger

Throttle Neutral

Adjust

Steering Wheel

Sensor Expansion

Port

MODEL WIRING DIAGRAM

Telemetry

Temperature Wire

Channel 1

Steering Servo

Traxxas High-Current

Connector (Male)

Antenna

to Battery

RPM

Sensor

Cooling Fan

Connector

(for optional use)

V/T - Voltage/Temp Sensor
RPM - RPM Sensor
BAT T/
CH5 - Battery/Channel 5*
CH4 - Channel 4*
CH3 - Channel 3*
CH2 - Speed Control
CH1 - Steering servo
CH1 - Steering servo*

*Not used

Telemetry

Voltage Wire

Channel 2

Electronic Speed Control

VXL-3s ELECTRONIC SPEED CONTROL

**

Traxxas High-Current

Connector (Male)

to Battery

Brushless Motor

(see sidebar for proper

motor wiring)

Motor Cap

to Motor

ESC/Motor Wiring Diagram

Link
Button

Cooling Fan
Connector

LED

(for optional use)

Receiver cable
(RX wire)

Power Switch Battery Compartment

LED

** Accessory sensor port for use with the Telemetry Expander Module (see Traxxas.com and included materials for more information)

Heat Sink

EZ-Set Button
(On/Off Button)

SLASH 4X4 ULTIMATE • 11

TRAXXAS TQi RADIO & VELINEON POWER SYSTEM

The included charger is
designed for use only with
Traxxas NiMH batteries
with iD. Legacy Traxxas
High-Current Connectors
are not compatible with this
charger. DO NOT try to force
legacy connectors into the
charge connector.

If the status LED doesn’t light
green, check the polarity of
the batteries. If you see any
other flashing signal from the
LED, refer to the chart on page
33 to identify the code.

Use the Right Batteries

Your transmitter uses
AA batteries. Use new
alkaline batteries. Do
not use rechargeable AA
cells to power the TQi
transmitter, as they will not
provide sufficient voltage
for optimum transmitter
performance.

Caution: Discontinue running
your model at the first sign of
weak batteries (flashing red
light) to avoid losing control.

2, 3

12 • SLASH 4X4 ULTIMATE

INSTALLING TRANSMITTER BATTERIES

Your TQi transmitter uses 4 AA batteries. The battery
compartment is located in the base of the transmitter.

1. Remove the battery compartment door by pressing the tab
and sliding the door open.

2. Install the batteries in the correct orientation as indicated in
the battery compartment.

3. Reinstall the battery door and snap it closed.

4. Turn on the transmitter and check the status indicator for a
solid green light.

If the status LED flashes red, the transmitter
batteries may be weak, discharged or
possibly installed incorrectly. Replace
with new batteries. The power indicator
light does not indicate the charge level
of the battery pack installed in the model. Refer to the
Troubleshooting section on page 33 for more information on
the transmitter Status LED codes.

CHARGING THE BATTERY PACK

The Traxxas Battery Charger is a fully featured NiMH (Nickle Metal
Hydride) charger. It features 4-amp charge current for fast charging
and advanced peak detection to optimize every charge. Take this
compact charger with you wherever you want to have radio controlled
fun! Do not charge batteries inside of an automobile. Read the Safety

Precautions section of this manual.

1. Plug the charger into a 12-volt
automotive auxiliary power
socket. The charger is compatible

with 12-volt automotive auxiliary
power sockets only. The LED on the
charger will glow red to indicate it
is ready to charge a battery.

2. Connect the battery to begin
charging. Plug the battery into

the charger. The charger’s LED
will flash green, indicating that
charging has begun. The flashing
green LED on the charger indicates
the charge progress.

3. Disconnect the battery when
charging is complete. The

Traxxas 4amp DC charger uses
sophisticated voltage-detection
circuitry to monitor the battery and
automatically stop charging when
the pack has reached
maximum capacity. When

CHARGE PROGRESS

the battery is fully charged,
the LED will light solid
green. The battery will
be warm in your hand.
Disconnect the battery.

CHARGER LED INDICATION MEANING

Solid Red LED Ready for Charging

Slowly Flashing Green LED Charging (see Charge Progress chart)

Solid Green LED Battery Fully Charged

Flashing Red LED Charger error

1

2

3

1 green flash 0 - 25% charged

x1

2 green flashes 25% - 50% charged

x2

3 green flashes 50% - 75% charged

x3

4 green flashes 75% or more charged

x4

Solid green LED 100% charged

Disconnected

Connected

Charged

INSTALLING THE BATTERY PACK

Install the battery pack with the battery
wires facing the rear of the model.
Insert the tabs of the battery hold-down
into the slots in the rear hold-down
retainer (A). Swing the battery hold
down towards the chassis and snap
(lock) the end into the front hold-down
retainer (B).

Using a Different Battery Configurati

The battery hold-down is capable of
accommodating either side-by-side
racing style packs or the more common
stick packs. The battery compartment
is configured for stick packs from the
factory. The number on each side of the
hold-down indicates the battery height
in millimeters that the hold-down can

accommodate. Note that one side is
labeled “25” and the other side is labeled “23”. The 25mm side is for
use with typical stick type battery packs. If you are using side-by-side
racing packs, simply flip the hold-down over to the 23mm side and
use it on the opposite side of the chassis. Note: For taller batteries,
an extended battery hold-down, part #7426X, is available (sold
separately). For shorter batteries (6-cell), use the included foam block
in the front of the battery compartment.

25mm side: Standard NiMH stick pack setup

on

TRAXXAS TQi RADIO & VELINEON POWER SYSTEM

Battery iD

Your model’s included battery
pack is equipped with Traxxas
Battery iD. This exclusive
feature allows Traxxas battery
chargers (sold separately)
to automatically recognize
connected battery packs
and optimize the charge
settings for the battery.
This eliminates the need to
worry over charger settings
and menus for the easiest
and safest charging solution
possible. Visit Traxxas.com to
learn more about this feature
and available Traxxas iD
chargers and batteries.

Battery Compartment Specs:

• 166mm (6.54") long
x 49.5mm (1.95") wide

• Height with stock strap:
23mm (.91") or 25mm (.94")

• Height with Part #7426X
options battery standoffs:
Up to 44mm (1.73")

Note: There is some flex with
the battery strap. It is possible
to fit slightly taller batteries in
the compartment.

23mm side: Side-by-side NiMH pack setup

4

SLASH 4X4 ULTIMATE • 13

TRAXXAS TQi RADIO & VELINEON POWER SYSTEM

Remember, always turn the
TQi transmitter on first and
off last to avoid damage to
your model.

Automatic Fail-Safe

The TQi transmitter and
receiver are equipped with
an automatic fail-safe system
that does not require user
programming. In the event
of signal loss or interference,
the throttle will return to
neutral and the steering will
hold its last commanded
position. If Fail-Safe activates
while you are operating
your model, determine the
reason for signal loss and
resolve the problem before
operating your model again.

Stop immediately at the first
sign of weak batteries. Never
turn the transmitter off when
the battery pack is plugged
in. The model could run out
of control.

5

14 • SLASH 4X4 ULTIMATE

RADIO SYSTEM CONTROLS

T

U

R

N

R

I

G

H

T

T

U

R

N

L

E

F

T

Neutral

Brake/Reverse

Forward

RADIO SYSTEM RULES

•

Always turn your TQi transmitter on first and off last. This procedure
will help to prevent your model from receiving stray signals from
another transmitter, or other source, and running out of control. Your
model has electronic fail-safes to prevent this type of malfunction,
but the first, best defense against a runaway model is to always turn
the transmitter on first and off last.

• Always use new or freshly charged batteries for the radio system.

Weak batteries will limit the radio signal between the receiver
and the transmitter. Loss of the radio signal can cause you to lose

control of your model.

1

Always turn your

transmitter on first.

2

Plug in the battery.

3

Turn on the model.

In order for the transmitter and receiver to bind to one another,

•
the receiver in the model must be turned on within 20 seconds
of turning on the transmitter. The transmitter LED will flash fast
red, indicating a failure to link. If you miss it, simply turn off the
transmitter and start over.

• Always turn on the transmitter before plugging in the battery.

RADIO SYSTEM BASIC ADJUSTMENTS

Throttle Neutral Adjustment

The throttle neutral adjustment is located
on the transmitter face and controls the
forward/reverse travel of the throttle trigger.
Change the adjustment by pressing the
button and sliding it to the desired position.
There are two settings available:

50/50: Allows equal travel for both acceleration and reverse.
70/30: Allows more throttle travel (70%) and less reverse travel (30%).

Note:

We strongly recommend to leave this control in its factory
location until you become familiar with all the adjustments and
capabilities of your model.

position, turn the transmitter off before adjusting the neutral
position. You will need to reprogram your electronic speed control

to recognize the 70/30 setting. Turn to VXL-3s Setup Programming
on page 17 for instructions.

Steering Trim

The electronic steering trim located on the
face of the transmitter adjusts the neutral
(center) point of the steering channel.

Multi-Function Knob

The Multi-Function knob can be
programmed to control a variety of functions.
From the factory, the Multi-Function knob
controls steering sensitivity, also known as exponential or “expo.”
When the knob is turned counterclockwise all the way to the left
(default position), expo is off and steering sensitivity will be linear
(the most commonly used setting). Turning the knob clockwise will
“add expo” and decrease the steering sensitivity in the initial range
of steering wheel travel left or right from center. For more detail on
steering exponential, refer to page 16.

To change the throttle neutral adjust

TRAXXAS TQi RADIO & VELINEON POWER SYSTEM

USING THE RADIO SYSTEM

The TQi Radio System has been pre-adjusted at the factory. The
adjustment should be checked before running the model, in case of
movement during shipping. Here’s how:

1. Turn the transmitter switch on. The status LED on the transmitter
should be solid green (not flashing).

Elevate the model on a block or a stand so that all the tires are

2.
off the ground. Make sure your hands are clear of the moving
parts of the model.

3.

Plug the battery pack in the model into the speed control.

4.

The on/off switch is integrated into the speed control. With the
transmitter on, press and release the EZ-Set button (.25 seconds).
The LED will shine RED (see note, below). This turns the model
on. To turn the VXL-3s off, press and hold the EZ-Set button
until the LED turns off (.5 seconds). Note: If the LED shines
green, Low-Voltage Detection is activated. This will cause erratic
performance from the included NiMH battery pack. The default
factory setting is for Low-Voltage Detection to be disabled
(LED shines red). Make sure to turn the low voltage detection
on when using LiPo batteries. Never use LiPo batteries while
Low-Voltage Detection is turned off. See page 17 for more
information.

5.

Turn the steering wheel on the transmitter back and forth and
check for rapid operation of the steering servo. Also, check that
the steering mechanism is
not loose or binding. If the
steering operates slowly,
check for weak batteries.

6.

When looking down at the
model, the front wheels
should be pointing straight ahead. If the wheels are turned
slightly to the left or right, slowly adjust the steering trim control
on the transmitter until they are pointing straight ahead.

7.

Gently operate the throttle trigger to ensure that you have
forward and reverse operation, and that the motor stops when
the throttle trigger is at neutral. WARNING: Do not apply full

throttle in forward or reverse while the model is elevated.

8. Once adjustments are made, turn off the receiver on your model,
followed by the hand-held transmitter.

Range-Testing the Radio System

Before each running session with your model, you should range-test
your radio system to ensure that it operates properly.

1.

Turn on the radio system and check its operation as described in

the previous section.

2.

Have a friend hold the model. Make sure hands and clothing are

clear of the wheels and other moving parts on the model.

3.

Walk away from the model with the transmitter until you reach

the farthest distance you plan to operate the model.

4.

Operate the controls on the transmitter once again to be sure

that the model responds correctly.

5.

Do not attempt to operate the model if there is any problem

with the radio system or any external interference with your
radio signal at your location.

Higher Speeds Require Greater Distance

The faster you drive your Slash 4X4 Ultimate, the more quickly it
will near the limit of radio range. At 60mph, a model can cover 88
feet every second! It’s a thrill, but use caution to keep your model
in range. If you want to see your Slash 4X4 Ultimate achieve its
maximum speed, it is best to position yourself in the middle of the
truck’s running area, not the far end, so you drive the truck towards
and past your position. In addition to maximizing the radio’s range,
this technique will keep your model closer to you, making it easier
to see and control.

No matter how fast or far you drive your Slash 4X4 Ultimate, always
leave adequate space between you, the model, and others. Never
drive directly toward yourself or others.

TQi Binding Instructions

For proper operation, the transmitter and receiver must be
electronically “bound.” This has been done for you at the factory.
Should you ever need to re-bind the system or bind to an additional
transmitter or receiver, follow these instructions. Note: The receiver
must be connected to a 4.8-6.0v (nominal) power source for binding
and the transmitter and receiver must be within 5 feet of each other.

1. Press and hold the transmitter’s SET button as you switch the
transmitter on. The transmitter’s LED will flash red slowly.

Using Reverse: While driving,
push the throttle trigger
forward to apply brakes.
Once stopped, return the
throttle trigger to neutral.
Push the throttle trigger
forward again to engage
proportional reverse.

6, 7

SLASH 4X4 ULTIMATE • 15

TRAXXAS TQi RADIO & VELINEON POWER SYSTEM

To prevent loss of radio
range do not kink or cut the
black wire, do not bend or
cut the metal tip, and do not
bend or cut the white wire at
the end of the metal tip.

Correct

NoNo No

2. Press and hold the receiver’s LINK button as you switch on the
speed control by pressing the EZ-Set button.

3. When the transmitter and receiver’s LEDs turn solid green, the
system is bound and ready for use. Confirm that the steering and
throttle operate properly before driving your model.

Steering Sensitivity (Exponential)

The Multi-Function knob on the TQi transmitter has been
programmed to control Steering Sensitivity (also known as
exponential). The standard setting for Steering Sensitivity is
“normal (zero exponential),” with the dial full left in its range of
travel. This setting provides linear servo response: the steering
servo’s movement will correspond exactly with the input from
the transmitter’s steering wheel. Turning the knob clockwise from
center will result in “negative exponential” and decrease steering
sensitivity by making the servo less responsive near neutral, with
increasing sensitivity as the servo nears the limits of its travel range.
The farther you turn the knob, the more pronounced the change
in steering servo movement will be. The term “exponential” comes
from this effect; the servo’s travel changes exponentially relative
to the input from the steering wheel. The exponential effect is
indicated as a percentage—the greater the percentage, the greater
the effect. The illustrations below show how this works.

Normal Steering Sensitivity (0% exponential)

In this illustration, the steering servo’s travel (and with it, the steering
motion of the model’s front wheels) corresponds precisely with the
steering wheel. The ranges are exaggerated for illustrative purposes.

Decreased Steering Sensitivity (Negative Exponential)

By turning the Multi-Function knob clockwise, the steering sensitivity
of the model will be decreased. Note that a relatively large amount
of steering wheel travel results in a smaller amount of servo travel.
The farther you turn the knob, the more pronounced the effect

becomes. Decreased steering sensitivity may be helpful when driving
on low-traction surfaces, when driving at high speed, or on tracks
that favor sweeping turns where gentle steering inputs are required.
The ranges are exaggerated for illustrative purposes.

Turning Range

at Transmitter

Effective Turning

Range on Model

Experiment! Try varying degrees of exponential. It’s easy to go back
to “zero” if you don’t like the effect. There’s no wrong way to adjust
exponential. Any setting that makes you more comfortable with
your car’s handling is the “right setting.”

SETTING UP THE ANTENNA

The receiver antenna has been set up and
installed from the factory. The antenna is
secured by a 3x4mm set screw. To remove
the antenna tube, simply remove the set
screw with the included 1.5mm wrench.

When reinstalling the antenna, first slide
the antenna wire into the bottom of the
antenna tube until the white tip of the
antenna is at the top of the tube under
the black cap. Next insert the antenna
tube into the mount while making sure
that antenna wire is in slot in the antenna
mount, then install the set screw next to
the antenna tube. Use the supplied 1.5mm wrench to tighten the
screw just until the antenna tube is securely in place. Do not over
tighten.

Do not bend or kink the antenna wire! See the side bar for

more information. Do not shorten the antenna tube.

Antenna

Tip

Antenna

Tube

Antenna

Mount

16 • SLASH 4X4 ULTIMATE

ADJUSTING THE ELECTRONIC SPEED CONTROL

VXL-3s Battery Settings (Low-Voltage Detection Setting)

The Velineon VXL-3s electronic speed control is equipped with built-in Low-Voltage
Detection. The Low-Voltage Detection circuitry constantly monitors the battery
voltage. When the battery voltage begins to reach the minimum recommended
discharge voltage threshold for LiPo battery packs, the VXL-3s will limit the power
output to 50% throttle. When the battery voltage attempts to fall below the
minimum threshold, the VXL-3s will shut down all motor output. The LED on the
speed control will slowly blink red, indicating a low-voltage shutdown. The VXL-3s
will stay in this mode until a fully charged battery is connected.

The VXL-3s speed control’s Low-Voltage Detection has been set up for best
performance with the batteries supplied with your model. If factory-equipped with
NiMH batteries, the speed control’s LED will glow red when it is turned on, indicating
Low-Voltage Detection is disabled. If factory-equipped with LiPo batteries, the LED
will glow green when it is turned on, indicating Low-Voltage Detection is activated.

Never use LiPo batteries while Low-Voltage Detection is disabled.

To verify the Low-Voltage Detection setting:

1. Turn on the transmitter (with the throttle at neutral).

2. Connect a fully charged battery pack to the VXL-3s.

3. Press and release the EZ-Set button to turn the VXL-3s on. If the LED is solid red,
then the Low-Voltage Detection is DISABLED (not safe to use LiPo batteries). If
the LED is solid green, then Low-Voltage Detection is ACTIVATED.

To activate Low-Voltage Detection (LiPo setting):

1. Make sure the LED on the VXL-3s is on and red.

2. Press and hold the EZ-Set button for ten seconds. The LED will
turn off and then light green. Also, a “rising” musical tone will be
emitted from the motor.

3. Low-Voltage Detection is now ACTIVATED.

To disable Low-Voltage Detection (NiMH setting):

1. Make sure the LED on the VXL-3s is on and green.

2. Press and hold the EZ-Set button for ten seconds. The LED will
turn off and then light red. Also, a “falling” musical tone will be
emitted from the motor.

3. Low-Voltage Detection is now DISABLED.

Transmitter Adjustments for the VXL-3s ESC

Before attempting to program your VXL-3s ESC, it is important to make sure that
your transmitter is properly adjusted (set back to the factory defaults). Otherwise,
you may not get the best performance from your speed control.

The transmitter should be adjusted as follows:

If the transmitter settings have been adjusted, reset them to the factory defaults.

1. Turn the transmitter off.

2. Hold both MENU and SET.

3. Turn the transmitter on.

4. Release MENU and SET. The transmitter LED will blink red.

5. Press SET to clear settings. The LED will turn solid green and the transmitter is
restored to default.

VXL-3s Setup Programming (Calibrating your ESC and transmitter)

Read through all of the programming steps before you begin. If
you get lost during programming or receive unexpected results,

A

simply unplug the battery, wait a few seconds, plug the battery
back in, and start over.

1. Connect a fully charged battery pack to the VXL-3s.

B

Green then Red

2. Turn on the transmitter (with the throttle at neutral).

3. Press and hold the EZ-Set button (A). The LED will first

turn green and then red. Release the EZ-Set button.

4. When the LED blinks RED ONCE, pull the throttle trigger

Once Red

C

to the full throttle position and hold it there (B).

5. When the LED blinks RED TWICE, push the throttle

trigger to the full reverse and hold it there (C).

6. When the LED blinks GREEN ONCE, programming is

Twice Red

D

complete. The LED will then shine green or red (depending on
Low-Voltage Detection setting), indicating the VXL-3s is on and
at neutral (D).

Once Green

VXL-3s Operation

To operate the speed control and test programming, place the vehicle on a stable
block or stand so that all of the drive wheels are off the ground. Disconnect motor
wires “A” and “C” (see page 11), this will ensure the motor does not drive the wheels
during testing. Do not test programming without disconnecting the motor wires.

Note that in steps 1-7 below, Low-Voltage Detection is DISABLED (factory default)
and the LED shines red. If Low-Voltage Detection is ACTIVATED, the LED will shine
green instead of red in steps 1-7 below. Never use LiPo batteries while Low-Voltage

Detection is disabled.

1. With the transmitter on, press and release the EZ-Set button. The LED will shine
red. This turns the VXL-3s on.

2. Apply forward throttle. The LED will turn off until full throttle power is reached.
At full throttle, the LED will illuminate red.

3. Move the trigger forward to apply the brakes. Note that braking control is fully
proportional. The LED will turn off until full braking power is reached. At full
brakes, the LED will illuminate red.

4. Return the throttle trigger to neutral. The LED will shine red.

5. Move the throttle trigger forward again to engage reverse (Profile #1).
The LED will turn off. Once full reverse power is reached, the LED
will illuminate red.

6. To stop, return the throttle trigger to neutral. Note that there is a programmed
delay when changing from reverse to forward. This prevents damage to the
transmission on high-traction surfaces.

7. To turn the VXL-3s off, press the EZ-Set button until the LED turns
off (.5 seconds).

VXL-3s Specifications

Input voltage:

4.8-11.1V (4 to 9 cells
NiMH or 2S to 3S LiPo)

Supported Motors:

Brushless

Motor limit:

None

Continuous current:

200A

Peak current :

320A

BEC voltage:

6.0V DC

Transistor type:
MOSFET

Battery connector:
Traxxas High-Current
Connector

Motor connectors:

TRX 3.5mm bullet
connectors

Motor/Battery Wiring:

12-gauge Maxx® Cable

Thermal Protection:

2-stage thermal shutdown

TRAXXAS • 17

ADJUSTING THE ELECTRONIC SPEED CONTROL

Patented Training Mode
(Profile #3) reduces forward
and reverse throttle by 50%.
Training Mode is provided
to reduce the power output,
allowing beginning drivers
to better control the model.
As driving skills improve,
simply change to Sport or
Race Mode for full-power
operation.

Tip For Fast Mode Changes

The VXL-3s is set to Profile 1
(Sport Mode) as the default.
To quickly change to Profile 3
(Training Mode), with the
transmitter on, press and
hold the SET button until the
light blinks red three times
and then release.
For full power, quickly change
back to Profile 1 (Sport Mode)
by pressing and holding the
SET button until the light
blinks red one time and
then releasing.

The VXL-3s has built-in
programming that prevents
accidental activation of
reverse while in forward
motion and vice-versa. You
must come to a complete
stop, release the throttle
trigger, then apply opposite
throttle to engage the motor
in the desired direction.

18 • SLASH 4X4 ULTIMATE

VXL-3s Profile Selection

The speed control is factory set to Profile #1 (100% forward, brakes, and reverse).
To disable reverse (Profile #2) or to allow 50% forward and 50% reverse (Profile #3),
follow the steps below. The speed control should be connected to the receiver
and battery, and the transmitter should be adjusted as described previously. The
profiles are selected by entering the programming mode.

Profile Description

Profile #1 (Sport Mode): 100% Forward, 100% Brakes, 100% Reverse
Profile #2 (Race Mode): 100% Forward, 100% Brakes, No Reverse
Profile #3 (Training Mode): 50% Forward, 100% Brakes, 50% Reverse

Selecting Sport Mode (Profile #1: 100% Forward, 100% Brakes, 100% Reverse)

1. Connect a fully charged battery pack to

A

B

the VXL-3s and turn on your transmitter.

2. With the VXL-3s off, press and hold
the EZ-Set button until the LED turns solid green,
then solid red and then begins blinking red
(indicating the Profile numbers).

3. When the LED blinks red once, release

Green to Red to Off

C

One blink Red

D

the EZ-Set button.

4.

The LED will blink and then turn solid green

(Low-Voltage Detection ACTIVE) or red (Low-

Release

Solid

Voltage Detection DISABLED). The model is ready to drive.

Selecting Race Mode (Profile #2: 100% Forward, 100% Brakes, No Reverse)

1. Connect a fully charged battery pack to

A

B

the VXL-3s and turn on your transmitter.

2. With the VXL-3s off, press and hold
the EZ-Set button until the LED turns solid green,
then solid red and then begins blinking red
(indicating the Profile numbers).

3. When the LED blinks red twice, release

Green to Red to Off

C

Two blinks Red

D

the EZ-Set button.

4.

The LED will blink and then turn solid green

(Low-Voltage Detection ACTIVE) or red (Low-

Release

Solid

Voltage Detection DISABLED). The model is ready to drive.

Selecting Training Mode (Profile #3: 50% Forward, 100% Brakes, 50% Reverse)

1. Connect a fully charged battery pack to the VXL-

A

B

3s and turn on your transmitter.

2. With the VXL-3s off, press and hold the EZ-Set
button until the LED turns solid green, then solid
red and then begins blinking red (indicating the
Profile numbers).

Green to Red to Off

C

Three blinks Red

D

3. When the LED blinks red three times, release the
EZ-Set button.

4. The LED will blink and then turn solid green
(Low-Voltage Detection ACTIVE) or red (Low-

Release

Solid

Voltage Detection DISABLED). The model is ready to drive.

Note: If you missed the mode you wanted, keep the EZ-Set button pressed down
and the blink cycle will repeat until the button is released and a Mode is selected.

LED Codes and Protection Modes

• Solid Green: VXL-3s power-on light. Low-Voltage Detection is

ACTIVATED (LiPo setting).

• Solid Red: VXL-3s power-on light. Low-Voltage Detection is
DISABLED (NiCad/NiMH setting). Never use LiPo batteries while Low-

Voltage Detection is disabled.

• Slow Blinking Red (with Low-Voltage Detection on): The VXL-3s has

entered Low-Voltage Protection. When the battery voltage begins
to reach the minimum recommended discharge voltage threshold
for LiPo battery packs, the VXL-3s will limit the power output to
50% throttle. When the battery voltage attempts to fall below the
minimum threshold, the VXL-3s will shut down all motor output.
The LED on the speed control will slowly blink red, indicating a
low-voltage shutdown. The VXL-3s will stay in this mode until a fully
charged battery is connected.

• Fast Blinking Red: Thermal Shutdown Protection Stage 1. If the
motor has lower than normal power and the VXL-3s is hot, the VXL-3s
has entered Stage 1 Thermal Shutdown Protection to guard against
overheating caused by excessive current flow. If the motor has no

power and the VXL-3s is very hot, the VXL-3s has entered Stage 2
Thermal Shutdown Protection and has automatically shut down.

Let the VXL-3s cool. Make sure your model is properly geared for the
conditions (see page 26).

• Very Fast Blinking Red: Thermal Shutdown Protection and Low
Voltage Protection (see above) have occurred at the same time.

• Alternating; Blinks Red then Green: If the motor has no power,
the VXL-3s has entered Over Voltage Protection. If a battery with
too high voltage is used, the VXL-3s will go into a fail-safe mode.
WARNING: If input voltage exceeds approximately 20-volts,
the ESC may be damaged. Do not exceed 12.6 maximum peak input
voltage.

• Blinking Green: The VXL-3s is indicating the transmitter
Throttle Trim (see page 33

) is incorrectly set. If the Multi-Function
knob is set to throttle trim, then adjust the Throttle Trim to the
middle “0” setting.

DRIVING YOUR MODEL

Now it’s time to have some fun! This section contains instructions on
driving and making adjustments to your model. Before you go on, here
are some important precautions to keep in mind.

• Allow the model to cool for a few minutes between runs. This is
particularly important when using high capacity battery packs that
allow extended periods of running. Monitoring temperatures will
extend the lives of the batteries and motors. See page 27 for advanced
user information on monitoring temperatures.

• Do not continue to operate the model with low batteries or you
could lose control of it. Indications of low battery power include slow
operation, sluggish servos (slow to return to center), or ESC shutdown
due to the Low-Voltage Detection circuitry. Stop immediately at the
first sign of weak batteries. When the batteries in the transmitter
become weak, the power light will begin to flash red. Stop immediately
and install new batteries.

• Do not drive the model at night, on public streets, or in large crowds of
people.

• If the model becomes stuck against an object, do not continue to run
the motor. Remove the obstruction before continuing. Do not push or
pull objects with the model.

• Because the model is controlled by radio, it is subject to radio
interference from many sources beyond your control. Since radio
interference can cause momentary losses of control, allow a safety
margin of space in all directions around the model in order to prevent
collisions.

• Use good, common sense whenever you are driving your model.
Intentionally driving in an abusive and rough manner will only result in
poor performance and broken parts. Take care of your model so that
you can enjoy it for a long time to come.

• When using the supplied optional pinion for top-speed running, limit
your driving to paved surfaces only. Running in grass and off-road
could cause excessive loads on the electrical system in the model.

• High-performance vehicles produce small vibrations that may loosen
hardware over time. Frequently check wheel nuts and other screws on
your vehicle to ensure that all hardware remains properly tightened.

About Run Time

A large factor affecting run time is the type and condition of your
batteries. The milliamp hour (mAh) rating of the batteries determines
how large their “fuel tank” is. A 3000mAh battery pack will theoretically
run twice as long as a 1500mAh sport pack. Because of the wide
variation in the types of batteries that are available and the methods
with which they can be charged, it’s impossible to give exact run times
for the model.

Another major factor that affects run time is how the model is driven.
Run times may decrease when the model is driven repetitively from a
stop to top speed and with repetitive hard acceleration.

Tips for Increasing Run Time

• Use batteries with the highest mAh rating you can purchase.

• Use a high-quality peak-detecting charger.

• Read and follow all maintenance and care instructions provided by the
manufacturer of your batteries and charger.

• Keep the VXL-3s cool. Get plenty of airflow across the ESC heat sink.

• Use the correct Low-Voltage Detection setting for your battery (see
page 17). Low-Voltage Detection can be off for maximum NiMH battery
runtime. Never use LiPo batteries while Low-Voltage Detection is
turned off.

• Maintain your model. Do not allow dirt or damaged parts to cause
binding in the drivetrain. Keep the motor clean.

• Lower your gear ratio. Installing a smaller pinion or larger spur gear
will lower your gear ratio, causing less power draw from the motor and
battery and reducing overall operating temperatures.

mAh Ratings and Power Output

The mAh rating of the battery can effect your top-speed performance.
The higher capacity battery packs experience less voltage drop under
heavy load than low mAh rated packs. The higher voltage potential
allows increased speed until the battery begins to become discharged.

9

SLASH 4X4 ULTIMATE • 19

DRIVING YOUR MODEL

RUNNING IN WET CONDITIONS

Your new Traxxas model is designed with water-resistant features to
protect the electronics in the model (receiver, servos, electronic speed
control). This gives you the freedom to have fun driving your model
through puddles, wet grass, snow, and through other wet conditions.
Though highly water resistant, the model should not be treated as
though it is submersible or totally 100% waterproof. Water resistance
applies only to the installed electronic components. Running in wet
conditions requires additional care and maintenance for the mechanical
and electrical components to prevent corrosion of metal parts and
maintain their proper function.

Precautions

• Without proper care, some parts of your model can be seriously
damaged due to contact with water. Know that additional
maintenance procedures will be required after running in wet
conditions in order to maintain the performance of your model. Do
not run your model in wet conditions if you are not willing to accept
the additional care and maintenance responsibilities.

• Not all batteries can be used in wet environments. Consult your battery
manufacturer to see if their batteries can be used in wet conditions. Do
not use LiPo batteries in wet conditions.

• The Traxxas TQi transmitter is not water resistant. Do not subject it to
wet conditions such as rain.

• Do not operate your model during a rain storm or other inclement
weather where lightning may be present.

• Do NOT allow your model to come in contact with salt water (ocean
water), brackish water (between fresh water and ocean water), or
other contaminated water. Salt water is highly conductive and highly
corrosive. Use caution if you plan to run your model on or near a beach.

Before Running Your Vehicle in Wet Conditions

1. Consult the section “After Running Your Vehicle in Wet Conditions”

before proceeding. Make sure you understand the additional
maintenance required with wet running.

2. The wheels have small holes molded in to allow air to enter and exit

the tire during normal running. Water will enter these holes and get
trapped inside the tires if holes are not cut in the tires. Cut two small
holes (3mm or 1/8” diameter) in each tire. Each hole should be near the
tire center-line, 180° apart.

3. Confirm that the RX box O-ring and cover are installed correctly and
secure. Make sure the screws are tight and the blue O-ring is not visibly
protruding from the edge of the cover.

4. Confirm that your batteries can be used in wet conditions.

5. Use lower gearing (smaller pinion gears, as low as 9T or spur gear as
large as 54T) when running in mud, deep puddles, snow, or other
similar situations that will restrict the tires and put much higher loads
on the motor.

Motor Precautions

• Velineon motor life can be greatly reduced in mud and water. If the

motor gets excessively wet or submerged, use very light throttle (run the
motor slowly) until the excess water can run out. Applying full throttle to
a motor full of water can cause rapid motor failure. Your driving habits
will determine motor life with a wet motor. Do not submerge the motor
under water.

• Do not gear the motor by temperature when running in wet conditions.

The motor will be cooled by water contact and will not give an accurate
indication of appropriate gearing.

• Use special care when operating your model in muddy conditions. Stop

operating your model if it appears to be straining due to the tackiness of
the mud or build-up of mud on the chassis. Do not allow mud to collect
on the motor or pack around the motor.

After Running Your Vehicle in Wet Conditions

1. Drain the tires by spinning the tires at high speed to “sling” the water
out. One way to do this is to make several high-speed passes on a flat,
dry surface, if possible.

2. Remove the batteries.

3.

Rinse excess dirt and mud off the truck with low-pressure water, such
as from a garden hose. Do NOT use a pressure washer or other high­pressure water. Avoid directing water into the bearings, differentials, etc.

4. Blow off the truck with compressed air (optional, but recommended).
Wear safety glasses when using compressed air.

5. Remove the wheels from the truck.

6. Spray all the bearings, drivetrain, and fasteners with WD-40

®

or similar

water displacing light oil.

20 • SLASH 4X4 ULTIMATE

DRIVING YOUR MODEL

7. Let the truck stand or you may blow it off with compressed air. Placing
the truck in a warm, sunny spot will aid drying. Trapped water and oil
will continue to drip from the truck for a few hours. Place it on a towel
or piece of cardboard to protect the surface underneath.

8. As a precautionary step, remove the sealed receiver box cover. While
unlikely, humidity or tiny amounts of moisture or condensation may
enter the receiver box during wet running. This can cause long-term
problems with the sensitive electronics in the receiver. Removing the
receiver box cover during storage allows the air inside to dry. This step
can improve the long-term reliability of the receiver. It is not necessary
to remove the receiver or unplug any of the wires.

9. Additional Maintenance: Increase your frequency of disassembly,
inspection, and lubrication of the following items. This is necessary
after extended wet use or if the vehicle will not be used for an extended
period of time (such as a week or longer). This additional maintenance
is needed to prevent any trapped moisture from corroding internal
steel components.

• Stub axle housing bearings: Remove, clean, and re-oil the bearings.

• Differentials: Remove, disassemble, clean, and re-grease the
differential components. Use a light coating of wheel bearing grease
(from an auto parts store) on the metal gear teeth. Refer to your
exploded view diagrams for help with disassembly and reassembly.

• Velineon motor: After operating your model in wet or muddy
conditions, remove the motor and clean any mud or dirt from
the bearings. To access the rear bearing, remove the plastic cap
with thumb pressure, or gently pry the cap off with a flat-blade
screwdriver. To prevent corrosion and ensure maximum bearing life,
lubricate the bearings with a light oil (available at your local hobby
store). Following these steps will extend motor life and maintain
peak performance. Be sure to wear eye protection when using spray
aerosol cleaners.

RECEIVER BOX: MAINTAINING A WATERTIGHT SEAL

Removing and Installing Radio Gear

The unique design of the receiver box allows the removal and installation
of the receiver without losing the ability to maintain a watertight seal
in the box. The patent-pending wire clamp feature gives you the ability
to also install aftermarket radio systems and maintain the watertight
features of the receiver box.

Removing the Receiver

1. To remove the wire clamp, remove the
two 2.5x12mm socket-head cap screws.

2. To remove the cover, remove the
two 3x12mm button-head cap screws.

3. To remove the receiver from the box, unplug
the servo cables from the receiver and remove the receiver.

Receiver Installation

1. Install the receiver into the box. Make
sure the LED light pipe is aligned with
the receiver LED.

2. Install the servo wires and antenna
through the cover and plug the wires
into the receiver.

3. Make sure the O-ring is properly seated into the
groove in the receiver box so that the cover will
not pinch it or damage it any way.

4. Install the cover and tighten the two 3x12mm
button-head cap screws securely.

5. Inspect the cover to make sure that the
O-ring seal is not visible.

6. Arrange the wires neatly using the wire
guides in the receiver box.

7. Apply small bead of silicone grease
(Traxxas part #1647) to the wire clamp.

8. Install the wire clamp and tighten the two

2.5x12mm cap screws securely.

SLASH 4X4 ULTIMATE • 21

BASIC TUNING ADJUSTMENTS

All of the toe links are
installed on the truck so the
left-hand thread indicators
point to the same direction.
This makes it easier to
remember which way to
turn the wrench to increase
or decrease toe link length
(the direction is same at all
four corners). Note that the
groove in the hex indicates
the side of the toe link with
the left-hand threads.

Once you become familiar with driving your model, you might need
to make adjustments for better driving performance.

ADJUSTING GEAR MESH

Incorrect gear mesh is the most
common cause of stripped spur
gears. Gear mesh should be checked
and adjusted anytime a gear is
replaced. Access the gears by
removing the single screw on the
gear cover.

To set the gear mesh, loosen the
motor screw. Cut a narrow strip
of notebook paper and run it into
the gear mesh. Slide the motor
and pinion gear into the spur gear.

Strip of

Paper

Motor
Screw

Retighten the motor screws and then
remove the strip of paper. You should
be able to run a fresh strip of paper
through the gears without binding them.

ADJUSTING THE CAMBER

The camber angle of both the front and rear wheels can be adjusted
with the camber links (upper turnbuckles). Use a square or right­angle triangle to set the camber accurately. Adjust the front wheels
to 1° to 2° of negative camber. In the rear, adjust the wheels to 1° to
2° of negative camber. These adjustments should be set with the
truck positioned at its normal ride height.

1°-2° 1°-2°

ADJUSTING THE TOE-IN

Toe-in refers to the angle of the wheels as viewed from above.
Geometry and alignment specs play an important roll in your
model’s handling. Take the time to set them correctly. Set the
steering trim on your transmitter to neutral. Now, adjust your servo
and tie rods so that both wheels are pointing straight ahead and are
parallel to each other (0° toe-in). This will ensure the same amount of
steering in both directions.

Front Toe-In: For increased stability add 1° to 2° of toe in to each
front wheel. Use the turnbuckles to adjust the alignment.

1°-2° 1°-2°

Toe-in

Front Toe Base Factory Settings
Front: 0°
Rear: 2.5° toe-in each side

Rear Toe-In: You will notice that the Slash 4X4

Ultimate’s rear wheels point inward slightly,
which aids in stability. This is called toe-in, and is
measured in degrees. If the wheels point straight
ahead, parallel with the chassis’ centerline, then the
wheels have “zero toe-in.” The Slash 4x4 Ultimate is
equipped with aluminum rear stub axle carriers that
provide 4° of rear toe-in. You will note that the axle
carriers are labeled “L” and “R,” to indicate left and
right. The axle carriers may be installed on the opposite sides (L on
the right side, R on the left side) to provide 1° of toe-in.

0°

4°

22 • SLASH 4X4 ULTIMATE

Camber

Static Camber Base Factory Settings
Front: 1° negative camber each side
Rear: 1° negative camber each side

Aluminum axle carriers

installed as labeled:

4° toe-in

Aluminum axle

carriers reversed:

1° toe-in

Plastic axle carriers

(not L/R dependent):

2.5° toe-in

BASIC TUNING ADJUSTMENTS

Slash 4x4 Ultimate also includes the plastic rear stub axle carriers as
used on the standard Slash 4X4 Ultimate, which offer 2.5° of toe-in.
They can be installed on either side of the truck, as they are not left/
right specific.

In general, increasing toe-in improves stability, while reducing toe-in
may help “loosen up” the truck’s handling to improve corner speed,
especially on high-grip tracks. Experiment to see what works best
for your track and driving style.

SHOCK MOUNTING POSITIONS

Big bumps and rough terrain
require a softer suspension
with the maximum possible
suspension travel and ride
height. Racing on a prepared
track or on-road use requires
a lower ride height and firmer,
more progressive suspension
settings. The more progressive
suspension settings help
reduce body roll (increased roll
stiffness), dive during braking,
and squat during acceleration.

The suspension of your model has been set up for off-road
performance (position 2 on the front suspension arms and position
3 on the rear suspension arms). If you plan on driving on hard
surfaces the following changes should be made:

1. Move the front shocks to position 3 on the suspension arms.

2. Move the rear shocks to position 4 or 5 on the suspension arms.

3. Reduce the ride height by loosening the upper spring
pre-load spacer.

4. Position 1 is not recommended for front or rear.

CENTERING YOUR SERVO

If you have removed the servo horn from your model’s steering servo,
or the servo has been removed for service or cleaning, the servo must
be re-centered prior to installation of the servo horn or installation of
the servo in the model.

1. Remove the front module from the vehicle to access the

steering servo.

2. Connect the steering servo to channel 1 on the receiver. Connect
the electronic speed control (ESC) to channel 2. The white wire on
the servo lead is positioned towards the receiver’s LED.

3. Turn the transmitter power switch on. Make certain the
transmitter’s batteries are not depleted.

4. Turn the transmitter’s steering trim knob to the center “0” position.

5. Disconnect motor wires “A” and “C” (see page 11) to prevent the
motor from turning during the next steps. Connect a fresh battery
pack to the speed control and turn on the ESC (see page 17). The
servo’s output shaft will automatically jump to its center position.

6. Install the servo horn onto the servo
output shaft. The servo horn should
be aligned one spline clockwise from
perpendicular alignment with the
servo case (not the chassis).

7. Check servo operation by turning
the steering wheel back and forth to
ensure that the mechanism has been centered properly and you
have equal throw in both directions. Use the transmitter’s steering
trim knob to fine-tune the position of the servo horn so the model
tracks straight when the steering wheel is at neutral.

ADJUSTING THE SLIPPER CLUTCH

The model is equipped with an
adjustable slipper clutch that is built
into the large spur gear. The purpose
of the slipper clutch is to regulate the
amount of power sent to the wheels
to prevent tire spin. When it slips,
the slipper clutch makes a high-pitch
whining noise. To adjust the slipper,
use the included wrench to hold
the adjusting nut and roll the model
forward to tighten and reverse to
loosen.

Place the model on a high-traction surface, such as carpet . Adjust the
slipper so that you can hear it slip for approximately two feet from a
standing, full throttle start. (Learn more about adjusting the slipper
clutch in the sidebar.)

To achieve a good starting
point for the slipper clutch
in this model, remove the
slipper gear assembly from
your model (see page 25 for
instructions) and tighten
the slipper clutch adjusting
nut clockwise until the
slipper clutch adjusting
spring fully collapses (do
not over tighten), and then
turn the slipper clutch nut
counterclockwise one full
turn.

Do not run your model with
the slipper clutch adjusting
spring fully compressed. The
minimum recommended
slipper clutch setting is 1/2
turn counterclockwise from
fully compressed.

SLASH 4X4 ULTIMATE • 23

MAINTAINING YOUR MODEL

Always wear eye protection
when using compressed
air or spray cleaners and
lubricants.

High-performance vehicles
generate small vibrations
while driving. These
vibrations may loosen
hardware over time and
require attention. Always
check your wheel nuts and
other hardware and tighten
or replace when necessary.

Your model requires timely maintenance in order to stay in top
running condition. The following procedures should be taken

very seriously.

Frequently inspect the vehicle for obvious damage or wear. Look for:

1. Cracked, bent, or damaged parts

2. Check the wheels and steering for binding.

3. Check the operation of the shock absorbers.

4. Check the wiring for any frayed wires or loose connections.

5. Check the mounting of the receiver and servo(s) and
speed control.

6. Check the tightness of the wheel nuts with a wrench.

7. Check the operation of the radio system, especially the
condition of the batteries.

8. Check for any loose screws in the chassis structure
or suspension.

9. Check the operation of the steering servo and ensure that it is
not binding.

10. Inspect the gears for wear, broken teeth, or debris lodged
between the teeth.

11. Check the tightness of the slipper clutch.

Other periodic maintenance:

• Slipper clutch pads

(friction material):
Under normal use,
the friction material
in the slipper clutch
should wear very
slowly. If the thickness of
any one of the slipper clutch pads
is 1.8mm or less, the friction disc should
be replaced. Measure the pad thickness
using calipers or measuring against the diameter
of the 1.5 and 2.0mm hex wrenches provided with the model.

• Chassis: Keep the chassis clean of accumulated dirt and grime.

Periodically inspect the chassis for damage.

• Suspension: Periodically inspect the model for signs of damage,
such as bent or dirty suspension pins, bent turnbuckles, loose
screws, and any signs of stress or bending. Replace components
as needed.

• Steering: Over time, you may notice increased looseness in
the steering system. The tie rod ends may wear out from use
(Traxxas Parts #2742 and #5525). Replace these components as
needed to restore factory tolerances.

• Shocks: Keep the oil level in the shocks full. Use only 100%
pure silicone shock oil to prolong the life of the seals. If you are
experiencing leakage around the top of the shock, inspect the
bladder in the top cap for signs of damage or distortion from
overtightening. If the bottom of the shock is leaking, then it
is time for a rebuild. The Traxxas rebuild kit for two shocks is
part #7463.

• Driveline: Inspect the driveline for signs of wear, such as worn
drive yokes, dirty axle half shafts, and any unusual noise or
binding. If a U-joint pops apart then it is time to replace the part.
Remove the gear cover. Inspect the spur gear for wear and check
the tightness of the set screws in the pinion gears. Tighten, clean,
or replace components as needed.

Storage

When you are through running the model for the day, blow it off
with compressed air or use a soft bristled paint brush to dust-off
the vehicle.

Always disconnect and remove the battery from the model
whenever the model is stored. If the model will be stored for a long
time, then also remove the batteries from the transmitter.

10

24 • SLASH 4X4 ULTIMATE

Suspension and slipper clutch assembly removal

The Slash 4X4 Ultimate was designed with ease of disassembly in mind. The entire front and rear suspension
assemblies can be removed from the chassis fully intact with the removal of only a few screws. Refer to
the exploded views included in the Slash 4X4 Ultimate Service and Support Guide for complete assembly
diagrams.

• Removing the front suspension module

1. Remove the 3x15 button-head cap screw from the steering link under the chassis.

2. Remove the two 3x6 flat-head cap screws from the front chassis.

3. Remove the two 4x12 button-head cap screws from the front of the chassis.

4. Remove the two 4x10 button-head cap screws from the top of the chassis.

5. Pull the front suspension assembly away from the chassis.

• Removing the rear suspension module
(Slipper clutch assembly removal)

1. Remove the two 4x12 button-head cap screws from the top of the chassis.

2. Remove the two 4x14 button-head cap screws from the bottom of the chassis.

3. Pull the rear suspension assembly away from the chassis.

4. The slipper clutch assembly can now be removed.

maintaining your model

Rear Suspension

Assembly

Front Suspension

Assembly

4x12BCS

3x6 FCS

4x10BCS

3x15BCS

4x12BCS

Slipper Clutch

Assembly

4x14BCS

SLASH 4X4 ULTIMATE • 25

ADVANCED TUNING ADJUSTMENTS

Gearing Compatibility Chart:

The chart below shows recommended
gear combination ranges for your model.

Spur Gear

50 52 54

9

- - 17.08

10

- - 15.37

11

- 13.45 13.97

12

- 12.33 12.81

13

10.95 11.38 11.82

14

10.16 10.57 10.98

15

9.49 9.87 10.25

16

8.89 9.25 9.61

17

8.37 8.71 9.04

18

7.91 8.22 8.54

Pinion Gear

19

7.49 7.79 8.09

20

7.12 7.40 7.68

21

6.78 7.05 7.32

22

6.47 6.73 -

23

6.19 6.43 -

24

5.93 - -

25

5.69 - -

26

- - -

Thick black border indicates stock settings.

Preferred gearing for off-road and
extreme terrain, 3S LiPo

Out of Box Setup, recommended for most
running, 6 or 7-cell NiMH, 2S LiPo

Recommended for high-speed running on
smooth hard surfaces only

Included optional gearing, for high-speed
running only

Fits, for high-speed runs only, not
recommended for use with NiMH batteries
High-current LiPo batteries required.

Doesn’t fit

CAMBER GAIN

Slash 4X4 Ultimate has provisions for adjusting the camber gain geometry
of the front and rear suspension. “Camber gain” refers to an increase
in camber angle as the suspension is compressed. The camber gain of
the vehicle can be changed by moving the camber link attachment to a
different horizontal mounting position. Adjusting the camber gain will
alter the tire contact patch as the suspension is compressed. Making
the camber link shorter will increase the camber gain. This makes the
vehicle more stable over bumps, but reduces traction on smooth surfaces.
Lengthening the camber links has the opposite effect.

Front Camber Gain

Front

To increase the camber gain on the front
suspension, move the

inner camber link
ends out to Position 3. Position 4 is the
stock setting.

Rear Camber Gain

To increase the camber gain on the rear
suspension,

move the

Rear

inner camber link
ends out to a different attachment hole
(Position 4 in the image. Position 5 is the
stock setting).

Once you make adjustments to the camber
gain, you may need to re-adjust the static camber to suit
your tuning needs.

ROLL CENTER

Slash 4X4 Ultimate has provisions for adjusting the roll center geometry
of the front and rear suspension. Roll center refers to the virtual axis
around which the chassis will roll when subjected to cornering forces.
The roll center of the vehicle can be raised by mounting the inner
ends of the camber links in a lower position. Raising the roll center will
effectively increase the roll stiffness of the vehicle (similar to installing
sway bars). Adding roll resistance to one end of the vehicle will tend
to add traction to the opposite end. For example, increasing roll
resistance in the rear will provide more traction for the front wheels

and potentially more steering. Raising the roll center on the front and
rear equally will increase overall roll resistance without changing the
handling balance. The default factory locations are designed to make
the truck easier and more forgiving to drive and less likely to traction
roll in turns.

Front Roll Center

Front

C-hub

To lower the roll center on the
front suspension, move

the
inner camber link ends up to
a different attachment hole
(Position 1 or 2 – Position 4 is
the stock setting). To lower the roll center further, move the outer camber
link ends to the lower position on the C-hub.

Bump steer correction - “Bump steer” refers to unwanted steering
inputs caused by suspension movement. Slash 4X4’s suspension
geometry is designed to minimize bump-steer. If
you are using the upper hole on the C-hub (image

A

A) and either of the two lower holes on the shock
tower (positions 3 or 4 in “Front” image), the tie rod
ball should be oriented with the large flat end on top
(stock position - image B). When using
any other combination of camber link
attachment points, the tie rod ball
should be oriented with the large flat
end on the bottom (C).

Rear Roll Center
To lower the roll center on the rear

B C

Rear

suspension, relocate the inner camber links
to one of the upper holes (position 1, 2, or
3 in image) in the upper row of the rear
camber link attachment.

Once you make adjustments to the roll
center, you may need to re-adjust the static
camber to suit your tuning needs.

26 • SLASH 4X4 ULTIMATE

ADVANCED TUNING ADJUSTMENTS

GEARING

One of the more significant advantages to your model’s transmission
is the extremely wide range of available gear ratios. Changing the
gearing allows you to fine tune the speed of the model and control
the temperatures of the battery pack and motor. Use a lower gear ratio
(numerically larger) to reduce current draw and temperatures. Use a
higher gear (numerically lower) to increase top speed. Use the following
formula to calculate the overall ratio for combinations not listed on the
gear chart:

# Spur Gear Teeth

# Pinion Gear Teeth

When using higher gear ratios, it is important to monitor the
temperatures of the battery and motor. If the battery is extremely
hot (150°F) and/or the motor is too hot to touch (200°F), your
model is probably over-geared and drawing too much current. This
temperature test assumes that the model is close to factory stock
weight and operates freely with no excessive friction, dragging, or
binding, and the battery is fully charged and in good condition. Note:
Check and adjust gear mesh if a spur and/or pinion gear is changed.

This model is equipped with a Velineon 3500 motor. The gear
combination that comes stock on each model provides good overall
acceleration and top speed. If you want more top speed, install the
included optional large pinion gear (more teeth). The included

optional large pinion gear is intended for high-speed running on
hard surfaces, and this gearing is not recommended for off-road or
repetitive starting and stopping.

x 2.85 = Final Gear Ratio

LIPO BATTERIES

LiPo batteries are intended only for the most advanced users that are
educated on the risks associated with LiPo battery use. It is critical to
follow all instructions supplied by the battery manufacturer and the
charger manufacturer for proper charging, use, and storage of LiPo
batteries. Make sure you understand how to use your LiPo batteries.
See Safety Precautions and warnings on page 4 for more information.

TEMPERATURES AND COOLING

Monitoring temperatures will extend the lives of the batteries and
motors.

There are many options available that will help you monitor

temperatures and cool your components .

Temperature sensor

To accurately monitor motor temperature and
prevent overheating, a telemetry temperature
sensor (part #6523) can be installed on the
motor to continually monitor temperature as
you drive. Generally, try to keep your motor
below 200° F. If necessary, increase airflow to
the motor by cutting out the rear of the body
or windshield.

Heat sink cooling fan

The VXL-3s is equipped with an additional
connector to supply power to an optional heat
sink cooling fan (part #3340). The optional heat
sink cooling fan can assist in cooling the VXL-3s
in high current motor applications.

Velineon 3500 Specs

Type:

Sensorless brushless

RPM/volt:

3500 (10-turn)

Magnet type:

Ultra High-Temperature
Sintered Neodymium

Connection type :

3.5mm bullet
Wire size:

12 Gauge
Max RPM:

50,000

Diameter:

36mm (1.42) (540 size)

Length:

55mm (2.165)

Weight:

262g (9.24oz)

Always use the proper length
motor bolts. The standard
motor mounting bolts
are 3x8mm. Using motor
bolts that are too long can
interfere with the motor’s
rotation and damage the
motor’s internals!

#6808

Slash 4x4

Pinion/Spur

Battery

Nominal Voltage

mAh

Skill Level

* Stock Gearing
** Included Optional Pinion

35+mph

13/54*

7-Cell NiMH

8.4V

4000+ mAh

40+mph

18/54**

7-Cell NiMH

8.4V

4000+ mAh

40+mph

19/54

2S LiPo

7.4V

4000+ mAh

45+mph

13/54*

3S LiPo

11.1V

5000+ mAh

60+mph60+mph

19/5419/54

3S LiPo

11.1V

5000+ mAh

The VXL-3s features Locked
Rotor Protection. The VXL-3s
checks to make sure the
motor is turning. If the motor
is locked or damaged, the
ESC will enter fail-safe until
the motor is free to rotate.

SLASH 4X4 ULTIMATE • 27

ADVANCED TUNING ADJUSTMENTS

28 • SLASH 4X4 ULTIMATE

TUNING THE SEALED GEAR DIFFERENTIALS

The action of the Slash 4X4 Ultimate’s front and rear gear
differentials can be tuned for different driving conditions and
performance requirements, without major disassembly or removal
of the suspension system.

From the factory, the differentials are sealed to maintain consistent
long-term performance. Changing the oil in the differential with
either lower or higher viscosity oil will vary the performance
characteristics of the differentials. Changing to a higher viscosity oil
in the differential will reduce the tendency for motor power to be
transferred to the wheel with the least traction. You may notice this
when making sharp turns on slick surfaces. The unloaded wheels
on the inside of the turn have the least traction and tend to spin
up to extremely high rpms. Higher viscosity (thicker) oil causes the
differential to act like a limited-slip differential, distributing more
equal power to the left and right wheels.

Slash 4X4 Ultimate will generally benefit from higher viscosity oil
when climbing or racing on low traction surfaces. Note: Heavier oil
will allow power to be transferred even with one or more tires off
the ground. This can make the vehicle more likely to overturn on
high-traction surfaces.

From the factory, the front differential is filled with SAE 30,000W
(30K) viscosity silicone oil. The rear differential is filled with grease,
but can also be tuned with silicone differential oil. Only use silicone
oil in the differentials. Traxxas offers silicone differential fluid in a
variety of viscosities:

Part #5135: 10K Part #5136: 30K Part #5137: 50K
Part #5130: 100K Part #5039: 500K

Follow the steps below to access and refill the front and rear differentials:

Front differential:

1. Remove the two 3x15mm button-head screws that secure the
top bumper mount to the differential (diff) case.

2. Turn the chassis over and remove the three 4x10mm countersunk
screws that hold bumper/skid plate to the bulkhead. The two rear
screws do not need to be removed.

3. Slide bumper assembly off of the chassis.

4. Remove 3x15mm button-head screw from diff tie bar.

5. Slide tie bar off truck.

Front Differential Removal

1. 3x15 BCS

6. 3x15 BCS

3.

5.

4. 3x15 BCS

2. 4x10 BCS

6. Remove two 3x15mm button-head screws from the differential
cover. Do not remove the two screws that secure the shock tower.

7. Use a 1.5mm hex wrench to remove the two screw pins that
hold the driveshaft yokes to the differential output shafts.
Remove the differential cover and slide the differential out of the
front of the case.

8. To reinstall the differential, reverse the steps.

Rear differential:

1. Remove the two 3x6mm flat-head sway bar screws.

2. Remove the two 3x20mm button-head screws that secure the
top bumper mount to the differential case.

3. Turn the chassis over and remove the two 3x12mm countersunk
crews that hold the bumper/skid plate to the bulkhead. The two
front screws do not need to be removed.

4. Remove the 3x20mm button-head screw from the bumper
mount and tie bar.

Rear Differential Removal

2. 3x20 BCS

7. 3x15 BCS

1. 3x6 FCS

5.

4. 3x20 BCS

6.

3. 3x12 BCS

Front of Truck

ADVANCED TUNING ADJUSTMENTS

5. Slide the bumper assembly off of the chassis.

6. Remove the tie bar from the chassis.

7.

Remove the two 3x15mm button-head screws from the differential

cover. Do not remove the two screws that secure the shock tower.

8. Remove the differential cover and slide the differential out of the
front of the case.

9. To reinstall the differential, reverse the steps.

Refilling the differentials:

1. Remove the four 2.5x8mm screws from the differential case and
carefully pull the differential case halves apart. Work over a towel
to collect any fluid that drips from the differential.

2. Drain the fluid from the differential. You may wish to remove the
spider gears from the differential to make this easier.

3. Place the spider gears back into the differential case, if you
removed them. Fill the diff case with fluid until it the spider gears
are submerged half way.

4. Rejoin the differential case halves, using care to align the screw
holes. Be sure the rubber gasket is in place, or the differential
may leak.

5. Install the 2.5x8mm screws and tighten securely.

Center differential

The optional included center differential allows the power from
the motor to be transferred to the front and rear differentials
independently from one another. When the rear wheels are under
more load than the front wheels, more power will be transmitted to
the front wheels. This is very beneficial on rough terrain and makes
hard acceleration from low speeds easier to control by keeping
the nose down. The center differential is assembled with 100K
differential lube from the factory. This viscosity will be a good base
point for most conditions.

1. Locate and remove the two 4x12mm button head machine
screws from the top rear of the chassis and the two 4x14mm
button head machine screws from the bottom of the rear
suspension bulkhead (See page 25 for reference).

2. Remove the modular rear end from the chassis by sliding it
backward away from the chassis. This is to access the spur gear/
slipper unit. Remove the spur gear/slipper unit from the rear of
the chassis.

3. Insert the included center differential unit into the rear of the
chassis (where the spur gear/slipper unit was removed). Stand
the chassis up on the front bumper to hold the spur gear steady
and line it up with the pinion gear. The splined shaft adapter
must key into the aluminum center drive shaft.

4. Attach the rear end unit to the chassis keying in the rear output
shaft of the center differential with the opening in the rear
differential. Secure the assembly with the same four button­head screws.
Tip: Rotate the rear wheels slowly while attaching the rear end
to the chassis to properly set the rear output shaft of the center
differential into the rear differential. You should feel the rear end
set into place. The rear skid plate should lock into the bottom of
the chassis.

TUNING AND MAINTAINING THE SHOCKS

Slash 4X4 Ultimate features high-performance GTR shocks that
utilize friction-reducing titanium nitride shafts and hard-anodized
bodies with PTFE-coated bores to provide the ultimate in precise
damping control. The shocks are filled with 30W silicone fluid. You
may wish to install lower-viscosity (“thinner”) or higher-viscosity
(“thicker”) fluid to alter damping performance to suit your track,
terrain, or driving style. Damping can also be altered by changing
the pistons inside the shocks. The front piston is a 2-hole with

1.5mm diameter holes. The rear piston is a 2-hole with 1.6

diameter holes.

Shock Oil

The 4 oil-filled aluminum shocks (dampers) effectively control the
suspension movement by preventing the wheels and tires from
continuing to “bounce” after rebounding from a bump. Changing
the oil in the shocks can vary the suspension damping effect.
Changing the oil to a higher viscosity oil will increase damping.
Lowering the viscosity of the oil will cause the suspension damping
to be reduced. Damping should be increased (with higher viscosity
oil) if the model is bottoming easily over jumps. Damping should be
decreased (with thinner viscosity oil) if the model is hopping over
small bumps and feels unstable. The viscosity of shock oil is affected
by extremes in operating temperature; an oil of certain viscosity will
become less viscous at higher temperatures and more viscous at
lower temperatures. Operating in regions with cold temperatures
may require lower viscosity oil. From the factory, the shocks are filled
with SAE-30W silicone oil. Only use 100% silicone oil in the shock.

SLASH 4X4 ULTIMATE • 29

ADVANCED TUNING ADJUSTMENTS

Optional shock springs
available from Traxxas.
Refer to your parts list for
a complete part number
listing. Higher rate springs
are stiffer. Springs can be
identified by dots of color on
one end.

Shock Piston Sizes

1.5

1.5

1.5

1.5mm Front

1.6

1.6

1.6

1.6mm Rear

Replacing Shock Oil

For easier service, the shocks should be removed from the vehicle
and disassembled to change the oil.

1. Remove the lower spring retainer and shock spring.

2. Remove the upper shock cap using the shock wrench and suspension
multi-tool (A).

3. Empty the used shock oil from the shock body.

4. Fill the shock with new silicone shock oil up to the top of the shock body.

5. Slowly move the piston up and down (always keeping it submerged
in oil) to release the air bubbles. Let the shock sit for a few minutes to
allow any remaining air bubbles to surface.

6. Slowly thread the upper cap with the installed shock bladder onto
the shock body with the suspension multi-tool. The excess oil will
bleed out of the small hole in the
shock cap.

Multi-tool Shock Functions

7. Tighten the shock cap until snug.
Use the included steel shock wrench
to hold onto the shock body while
tightening (A).

Shock disassembly

The shocks must be removed from the
vehicle and disassembled to change the

A. Tighten/Loosen Upper Cap

pistons. Use the shock exploded views
included with the model to aid in the
assembly process.

1. Remove the spring and lower spring

retainer from the shock.

2. Remove the shock cap and empty the

shock body of shock oil (A).

3. Remove the lower cap and the X-ring

B. Tighten/Loosen Lower Cap

from the shock body (B).

4. Use side cutters to grip the shock shaft

just above the rod end. Remove the
rod end from the shock shaft using
the suspension multi-tool (C).

5. Remove the shock shaft with piston

from the shock body out through the
top of the shock body.

C. Remove/Install Rod End

Shock assembly

1. Replace the stock piston with desired
optional piston. Be careful not to lose
the small washer located below the
piston.

2. Position the new piston onto the shock
shaft above the small washer. Grip the
threads of the shaft with side cutters or
needlenose pliers and tighten the nut
with the 4-way wrench to secure the
assembly (D).

3. Insert the shock shaft assembly through
the shock body until the piston

D. Piston Installation/Removal

7468
7463

7468

7463

bottoms out.

4. Lubricate the shaft and X-ring with
silicone oil.

7464

Front (long)

7465

rear (xx-long)

5. Install the X-ring over the shaft and

into the bore of the shock body.

6. Install the lower cap using the

suspension multi-tool (B).

7. Grip the shaft close to the threads with

needlenose pliers or side cutters and
thread the rod end onto the shock
shaft until the rod end bottoms out (C).

8. Fill the shock with new silicone shock

oil up to the top of the shock body.
Slowly move the piston up and down

7466

Front (long)

7467

rear (xx-long)

7468

7463

7463
(Rear Only)

F-7444

7440 opt.
7441 opt.
7445 opt.
7448 opt.

R-7446

7442 opt.
7443 opt.
7447 opt.
7449 opt.

7468

(always keeping it submerged in oil) to
release the air bubbles. Let the shock
sit for a few minutes to allow any
remaining air bubbles to surface.

7468
7463

7463

9. Slowly thread the upper cap with the installed shock bladder onto

the shock body with the suspension multi-tool. The excess oil will
bleed out of the small hole in the shock cap. Tighten the shock cap
until snug. Use the included steel shock wrench to hold onto the
shock body while tightening (A).

10. Reinstall the spring and lower retainer.

30 • SLASH 4X4 ULTIMATE

SWAY BAR SETTINGS AND ADJUSTMENTS

• Adjust the sway bar links so the sway bars are level (parallel to the
ground) when the truck is on the ground and the suspension is at
rest (normal ride height). This allows equal sway bar travel in both
unloaded and loaded suspension conditions. Always adjust the
left and right sway bar links equally to prevent suspension tweak.

• The adjustable hollow balls can be
moved closer to or farther from
the sway bar mount (pivot point)
to increase torsion response and
fine tune the sway bar’s response
for different track conditions.
Closer to the pivot point results
in a stiffer setup, farther from the
pivot point will result in softer sway bar response.

For smooth surfaces with high traction:

• Adjust linkage placement for stiffer response
(closer to the sway bar mount).

For rough surfaces with low traction:

• Adjust linkage placement for softer response
(farther from the sway bar mount).

To reduce understeer (pushing in corners):

• Adjust front linkage placement for softer response
(farther from the sway bar mount).

• Adjust rear linkage placement for stiffer response
(closer to the sway bar mount).

To reduce oversteer (loose in corners):

• Adjust front linkage placement for stiffer response
(closer to the sway bar mount).

• Adjust rear linkage placement for softer response
(farther from the sway bar mount).

Stiffer

Softer

ADVANCED TUNING ADJUSTMENTS

If you have questions or need technical assistance, call Traxxas at

1-888-TRAXXAS

(1-888-872-9927) (U.S. residents only)

SLASH 4X4 ULTIMATE • 31

TQi ADVANCED TUNING GUIDE

The model’s TQi transmitter is equipped with the Traxxas Link Wireless
Module. This innovative accessory transforms your iPhone®, iPad®, or iPod
touch® into a powerful tuning tool that equips your TQi with an intuitive,
high-definition, full-color graphical user interface.

Traxxas Link

The powerful Traxxas Link app (available in the Apple App Store) gives you
complete control over the operation and tuning of your Traxxas model with
stunning visuals and absolute precision. With the installed Traxxas Link
telemetry sensors on the model, Traxxas Link displays real-time data such as
speed, RPM, temperature, and battery voltage.

Intuitive iPhone, iPad, and iPod touch interface

Traxxas Link makes it easy to
learn, understand, and access
powerful tuning options. Control
Drive Effects settings such as
steering and throttle sensitivity;
steering percentage; braking
strength; and throttle trim by
simply touching and dragging the
sliders on the screen.

Real-Time Telemetry

With the installed telemetry

Tap and slide to adjust Steering Sensitivity,

Throttle Trim, Braking Percent, and more!

sensors, the Traxxas Link
dashboard comes to life showing
you speed, battery voltage, RPM,
and temperature. Set threshold
warnings and log maximums,
minimums, or averages. Use the
recording function to document
your dashboard view, with sound,
so that you can keep your eyes
on your driving and not miss a
single apex.

The customizable Traxxas Link dashboard delivers

real-time rpm, speed, temperature, and voltage data.

Manage up to 30 Models with Traxxas Link

The TQi radio system automatically keeps track of what vehicles it has bound
to and what settings were used for each--up to 30 models total! Traxxas Link
provides a visual interface to name the models, customize their settings,
attach profiles, and lock them into memory. Simply choose a model and any
previously bound transmitter, power them up, and start having fun.

Pairing the TQi transmitter with the Traxxas Link Wireless Module
and the Traxxas Link App® for the first time:

1. Turn the transmitter switch on.

2. Open the Traxxas Link App on

A

your mobile device. Touch the
Garage button, and then touch
the Wireless Module button (A).

3. Press the button on the Traxxas
Link Wireless Module. The blue
LED on the module will blink (B).

B

4. Within 10 seconds,

D

C

touch the “Search
for Traxxas Link
Wireless Module”
button on your
mobile device (C).

5. The Bluetooth® icon
in the status bar will
turn blue, and the blue LED on the module will glow solid blue (D).

6. The Traxxas Link Wireless Module and the Traxxas Link App are now
paired, and will automatically connect when the transmitter is turned on
and the app is running.

TRAXXAS LINK MODULE LED CODES

LED Color / Pattern Name Notes

Blue LED off Connecting mode

Slow blue
(0.5 sec on / 0.5 sec off)

Solid blue Connected

Pairing mode

Traxxas Link App is not running on
a paired device.

See above for information on pairing
the module with Traxxas Link App.

See page 14 for information on how
to use your transmitter controls.

32 • TRAXXAS

TQi ADVANCED TUNING GUIDE

Available Tuning Adjustments

The following items can be adjusted most easily using your mobile
device and the Traxxas Link application. All the features described
below may also be accessed using the MENU and SET buttons on
the transmitter and observing signals from the LED. An explanation
of the menu structure follows on page 35.

Your Traxxas transmitter has a programmable Multi-Function knob
that can be set to control various advanced transmitter functions
(set to Steering Sensitivity by default, see page 16). Experiment with
the settings and features to see if they can improve your driving
experience.

Steering Percentage (Dual Rate)

The Multi-Function knob can be set to control the amount
(percentage) of servo travel applied to steering. Turning the Multi­Function knob fully clockwise will deliver maximum steering throw;
turning the knob counterclockwise reduces steering throw (note:
turning the dial counterclockwise to its stop will eliminate all servo
travel). Be aware that the steering End Point settings define the
servo’s maximum steering throw. If you set Steering Percentage to

TRANSMITTER LED CODES

LED Color / Pattern Name Notes

Solid green Normal Driving Mode See page 14 for information on how to use your transmitter controls.

Slow red (0.5 sec on / 0.5 sec off) Binding See page 15 for more information on binding.

Flashing fast green (0.1 sec on / 0.15 sec off) Throttle Trim Seek Mode

Flashing medium red (0.25 sec on / 0.25 sec off) Low Battery Alarm Put new batteries in the transmitter. See page 12 for more information.

Flashing fast red (0.125 sec on / 0.125 sec off) Link Failure / Error

Programming Patterns

or

Counts out number (green or red) then pauses Current menu position See Menu Tree for more information.

x

Fast green 8 times Menu setting accepted (on SET)

8

Fast red 8 times Menu SET invalid User error such as trying to delete a locked model.

x

8

RECEIVER LED CODES

LED Color / Pattern Name Notes

Solid green Normal Driving Mode See page 14 for information on how to use your transmitter controls.

Slow red (0.5 sec on / 0.5 sec off) Binding See page 15 for more information on binding.

Flashing fast red (0.125 sec on / 0.125 sec off) Fail-Safe / Low-Voltage Detect

100% (by turning the Multi-Function knob fully clockwise), the servo
will travel all the way to its selected end point, but not past it. Many
racers set Dual Rate so they have only as much steering throw as
they need for the track’s tightest turn, thus making the car easier to
drive throughout the rest of the course. Reducing steering throw
can also be useful in making a car easier to control on high-traction
surfaces, and limiting steering output for oval racing where large
amounts of steering travel are not required.

Throttle Sensitivity (Throttle Exponential)

The Multi-Function knob can be set to control Throttle Sensitivity.
Throttle Sensitivity works the same way as Steering Sensitivity, as
described on page 16, but applies the effect to the throttle channel.
Only forward throttle is affected; brake/reverse travel remains linear
regardless of the Throttle Sensitivity setting.

Steering and Throttle End Points

The TQi transmitter allows you to choose the limit of the servo’s
travel range (or its “end point”) independently for left and right
travel (on the steering channel) and throttle/brake travel (on the
throttle channel). This allows you to fine-tune the servo settings to

Turn the Multi-Function knob right or left until the LED stops flashing.
See sidebar for more information.

Transmitter and receiver are no longer bound. Turn the system off and then
back on to resume normal operation. Find source of the link failure (i.e., out of
range, low batteries, damaged antenna).

Consistent low voltage in the receiver triggers Fail-Safe so there is enough
power to center the throttle servo before it completely loses power.

Throttle Trim Seek Mode

When the Multi-Function knob is
set to throttle trim, the transmitter
remembers the throttle trim setting. If
the throttle trim knob (Multi-Function
knob) is moved from the original
setting while the transmitter is off,
or while the transmitter was used to
control another model, the transmitter
ignores the actual position of the trim
knob. This prevents the model from
accidentally running away. The LED on
the face of the transmitter will rapidly
blink green and the throttle trim knob
(Multi-Function knob) will not adjust the
trim until it is moved back to its original
position saved in memory. To restore
throttle trim control, simply turn the
Multi-Function knob either direction
until the LED stops blinking.

Fail-safe

Your Traxxas radio system is equipped
with a built-in fail-safe function that
returns the throttle to its last saved
neutral position in the event of a signal
loss. The LED on the transmitter and the
receiver will rapidly flash red.

Starting Over:

Restoring Factory Defaults

When programming your TQi transmitter,
you may feel the need to start over with a
clean slate. Follow these simple steps to
restore the factory settings:

1. Turn the transmitter off.

2. Hold both MENU and SET.

3. Turn the transmitter on.

4. Release MENU and SET. The
transmitter LED will blink red.

5. Press SET to clear settings. The
LED will turn solid green and the
transmitter is restored to default.

SLASH 4X4 ULTIMATE • 33

TQi ADVANCED TUNING GUIDE

prevent binding caused by the servo moving steering
or throttle linkages (in the case of a nitro car) farther
than their mechanical limits. The end point adjustment
settings you select will represent what you wish to be
the servo’s maximum travel; the Steering Percentage or
Braking Percentage functions will not override the End
Point settings.

Steering and Throttle Sub-Trim

The Sub-Trim function is used to precisely set the
neutral point of the steering or throttle servo in the
event that simply setting the trim knob to “zero” does
not completely center the servo. When selected, Sub­Trim allows finer adjustment to the servo output shaft’s
position for precise setting of the neutral point. Always
set the Steering Trim knob to zero before making final
adjustment (if required) using Sub-Trim. If Throttle Trim
has been previously adjusted, the Throttle Trim will
need to be reprogrammed to “zero” before making final
adjustment using Sub-Trim.

Braking Percentage

The Multi-Function knob may also be set to control the
amount of brake travel applied by the servo in a nitro­powered model. Electric models do not have a servo­operated brake, but the Braking Percentage function still
operates the same way in electric models. Turning the
Multi-Function knob full clockwise will deliver maximum
brake throw; turning the knob counterclockwise reduces
brake throw (Note: Turning the dial counterclockwise to
its stop will eliminate all brake action).

Throttle Trim

Setting the Multi-Function knob to serve as throttle trim
will allow you to adjust the throttle’s neutral position
to prevent unwanted brake drag or throttle application
when the transmitter trigger is at neutral.
Note: Your transmitter is equipped with a Throttle Trim
Seek mode to prevent accidental runaways. See the
sidebar on page 33 for more information.

Setting Lock

Once you’ve adjusted all of these settings the way you like
them, you may want to disable the Multi-Function knob

so none of your settings can be changed. This is especially
handy if you operate multiple vehicles with a single
transmitter via Traxxas Link

™

Model Memory.

Multiple Settings and the Multi-Function Knob

It is important to note that settings made with the Multi­Function knob are “overlaid” on top of each other. For
example, if you assign the Multi-Function knob to adjust
Steering Percentage and set it for 50%, then reassign
the knob to control Steering Sensitivity, the transmitter
will “remember” the Steering Percentage setting.
Adjustments you make to Steering Sensitivity will be
applied to the 50% steering throw setting you selected
previously. Likewise, setting the Multi-Function knob to
“disabled” will prevent the knob from making further
adjustments, but the last setting of the Multi-Function
knob will still apply.

TRAXXAS LINK MODEL MEMORY

Traxxas Link Model Memory is an exclusive, patent­pending feature of the TQi transmitter. Each time the
transmitter is bound to a new receiver, it saves that
receiver in its memory along with all the settings
assigned to that receiver. When the transmitter and
any bound receiver are switched on, the transmitter
automatically recalls the settings for that receiver. There
is no need to manually select your vehicle from a list of
model memory entries.

Model Lock

The Traxxas Link Model Memory feature can store up
to thirty models (receivers) in its memory. If you bind
a thirty-first receiver, Traxxas Link Model Memory will
delete the “oldest” receiver from its memory (in other
words, the model you used the longest time ago will be
deleted). Activating Model Lock will lock the receiver in
memory so it cannot be deleted.

You may also bind multiple TQi transmitters to the same
model, making it possible to pick up any transmitter and
any previously bound model in your collection and simply
turn them on and drive. With Traxxas Link Model Memory,
there is no need remember which transmitter goes with
which model and there is never a need to have to select

any model from a list of model memory entries. The
transmitter and receiver do it all for you automatically.

To activate Model Lock:

1. Switch on the transmitter and receiver you wish to lock.

2. Press and hold MENU. Release when the status LED
blinks green.

3. Press MENU three times. The status LED will blink green
four times repeatedly.

4. Press SET. The status LED will blink green in single­flash intervals.

5. Press SET once. The status LED will blink red
once repeatedly.

6. Press MENU once. The LED will blink red
twice repeatedly.

7. Press SET. The LED will blink rapidly green.
The memory is now locked. Press MENU and SET to
return to driving mode.

Note: To unlock a memory, press SET twice at step 5.

The LED will blink rapidly green to indicate the model
is unlocked. To unlock all models, press MENU twice at
step 6 and then press SET.

To delete a model:

At some point, you may wish to delete a model you no­longer drive from the memory.

1. Switch on the transmitter and receiver you wish
to delete.

2. Press and hold MENU. Release when the status LED
blinks green.

3. Press MENU three times. The status LED will blink green
four times repeatedly.

4. Press SET once. The status LED will blink green
once repeatedly.

5. Press MENU once. The status LED will blink green
twice repeatedly.

6. Press SET. The memory is now selected to be deleted.
Press SET to delete the model. Press and hold MENU to
return to driving mode.

34 • SLASH 4x4 ULTIMATE

TQi ADVANCED TUNING GUIDE

MENU TREE

The menu tree below shows how to navigate through
the TQi transmitter’s various settings and functions.
Press and hold MENU to enter the menu tree, and use
the following commands to navigate through the menu
and select options.

MENU: When you enter a menu, you always start at the

top. Press MENU to move down the menu tree.
When you reach the bottom of the tree, pressing
MENU again will return you to the top.

SET: Press SET to move across the menu tree and select

options. When an option is committed to the
transmitter’s memory, the status LED will rapidly
blink green.

BACK: Press both MENU and SET to go back one level in

the menu tree.

EXIT: Press and hold MENU to exit programming.

Your selected options will be saved.

ECHO: Press and hold SET to activate the “echo” function.

Echo will “play back” your current position on the
Menu Tree, should you lose your place. For example:
If your current position is Steering Channel End
Points, holding SET will cause the LED to blink green
twice, green once, and then red three times. Echo
will not alter your adjustments or change your
position in the programming sequence.

Below is an example of how to access a function in the menu
tree. In the example, the user is setting the Multi-Function knob
to be a steering Dual Rate control.

To set the Multi-Function knob to control STEERING DUAL RATE (%):

1. Switch the transmitter on

2. Press and hold MENU until the green LED lights. It will blink in single
intervals.

3. Press SET. The red LED will blink in single intervals to indicate Steering
Dual Rate has been selected.

4. Press MENU twice. The red LED will blink three times repeatedly to
indicate Steering Percentage has been selected.

5. Press SET to select. The green LED will blink 8 times fast to indicate
successful selection.

6. Press and hold MENU to return to driving mode.

Restoring Factory Defaults:

Transmitter

OFF

Hold both

MENU and SET

Transmitter ONRelease MENU and SET

red LED blinks

Press SET to clear settings. LED will turn

solid green. Transmitter is restored to default

Enter Programming

Press and hold
MENU for 3 seconds

Multi-Function Knob

1

One Blink Green

Press

MENU

Channel Setup

2

Two Blinks Green

Press

MENU

Mode Selection

3

Three Blinks Green

Press

MENU

Traxxas-Link

4

Four Blinks Green

Press

SET

Press

SET

Press

SET

Press

SET

Press MENU to move through options.
Press SET to select an option.

Steering Sensitivity (Expo)

1

One Blink Red

Throttle Sensitivity (Expo)

2

Two Blinks Red

Steering % (Dual Rate)

3

Three Blinks Red

Braking %

4

Four Blinks Red

Throttle Trim

5

Five Blinks Red

Knob Disabled

6

Six Blinks Red

Steering (Channel 1)

1

One Blink Green

Press

MENU

Throttle (Channel 2)

2

Two Blinks Green

Press SET to select an option.

Electric

1

One Blink Red

Press

MENU

Nitro

2

Two Blinks Red

Model Locking

1

One Blink Green

Press

MENU

Delete Model

2

Two Blinks Green

Press

SET

Press

SET

Press

SET

Press

SET

Note: The transmitter is “live” during programming
so you can test the settings real time without having
to exit the menu tree.

Press MENU to move through options.
Press SET to select an option.

Servo Reversing

1

One Blink Red

Sub-Trim

2

Two Blinks Red

End Points

3

Three Blinks Red

Turn left to desired end point and press set to save.
To reset max throw: Let go of controls and press SET.

Reset End Points

4

Four Blinks Red

Servo Reversing

1

One Blink Red

Sub-Trim

2

Two Blinks Red

End Points

3

Three Blinks Red

forward to desired end point and press set to save.
To reset max throw: Let go of controls and press SET.

Reset End Points

4

Four Blinks Red

Unlock

1

One Blink Red

Lock

2

Two Blinks Red

Unlock All

3

Three Blinks Red

Confirm Deletion

1

One Blink Red

Press SET to reverse
servo direction.

Use knob to adjust
sub-trim. Press SET to save.

Use steering wheel to
adjust. Turn right to desired
end point, press set to save.

Press SET to restore factory
default end points.

Press SET to reverse
servo direction.

Use knob to adjust sub­trim. Press SET to save.

Use trigger to adjust. Pull
back to desired end point,
press set to save. Push

Press SET to restore factory
default end points.

TQi ADVANCED TUNING GUIDE

Set Multi-Function
knob for STEERING
SENSITIVITY (Expo)

Set Multi-Function
knob for THROTTLE
SENSITIVITY (Expo)

Set Multi-Function
knob for STEERING
DUAL RATE (%)

Set Multi-Function
knob for BRAKING
PERCENTAGE (%)

Set Multi-Function
knob for
THROTTLE TRIM

To LOCK the
Multi-Function knob

To REVERSE
the direction of
STEERING servo

To set the SUB TRIM
of the STEERING
servo

To set the END
POINTS of the
STEERING servo

To reset the END
POINTS of STEERING
servo to defaults

To REVERSE
the direction of
THROTTLE servo

To set the SUB TRIM
of the THROTTLE
servo

To set the END
POINTS of the
THROTTLE servo

To reset the END
POINTS of THROTTLE
servo to defaults

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press SET

red LED blinks

Press SET

red LED blinks

Press SET

red LED blinks

Press SET

red LED blinks

Press SET

red LED blinks

Press SET

red LED blinks

x

Press MENU

green LED blinks (x2)

x

Press MENU

green LED blinks (x2)

x

Press MENU

green LED blinks (x2)

x

Press MENU

green LED blinks (x2)

x

Press MENU

green LED blinks (x2)

x

Press MENU

green LED blinks (x2)

x

Press MENU

green LED blinks (x2)

x

Press MENU

green LED blinks (x2)

Press SET to confirm

green LED blinks (x8)

Press MENU to confirm

red LED blinks (x2)

Press MENU twice

red LED blinks (x3)

Press MENU 3 times

red LED blinks (x4)

Press MENU 4 times

red LED blinks (x5)

Press MENU 5 times

red LED blinks (x6)

2

2

2

2

2

2

2

2

Press SET

green LED blinks

Press SET

green LED blinks

Press SET

green LED blinks

Press SET

green LED blinks

Press SET

green LED blinks

Press SET

green LED blinks

Press SET

green LED blinks

Press SET

green LED blinks

x

8

returns to driving mode

x

2

x

3

x

4

x

5

x

6

Press SET

red LED blinks

Press SET

red LED blinks

Press SET

red LED blinks

Press SET

red LED blinks

Press MENU

Press MENU

Press MENU

Press MENU

Press/hold MENU

Press SET to select

green LED blinks (x8)

Press SET to select

green LED blinks (x8)

Press SET to select

green LED blinks (x8)

Press SET to select

green LED blinks (x8)

Press SET to lock

green LED blinks (x8)

green LED blinks (x2)

green LED blinks (x2)

green LED blinks (x2)

green LED blinks (x2)

x

8

returns to driving mode

x

8

returns to driving mode

x

8

returns to driving mode

x

8

returns to driving mode

x

8

returns to driving mode

x

2

x

2

x

2

x

2

Press/hold MENU

Press/hold MENU

Press/hold MENU

Press/hold MENU

Press/hold MENU

x

Press SET to reverse

servo direction

x

Press MENU

red LED blinks (x2)

x

Press MENU twice

red LED blinks (x3)

x

Press MENU 3 times

red LED blinks (x4)

Press SET

red LED blinks

Press SET

red LED blinks

Press SET

red LED blinks

Press SET

red LED blinks

Function knob until the

LED turns solid green.

8

returns to driving mode

2

Use Multi-Function

knob to set neutral

3

wheel to desired max

left and right travel

4

to reset end points

Press SET to reverse

red LED blinks (x2)

Press MENU twice

red LED blinks (x3)

Press MENU 3 times

red LED blinks (x4)

Adjust the Multi-

Press/hold MENU

Turn steering

Press SET

servo direction

Press MENU

x

8

x

8

x

2

x

3

x

4

MENU TREE FORMULAS

To select functions and make adjustments to the TQi transmitter without
referencing the menu tree, turn your transmitter on, find the function in the
left column you wish to adjust, and simply follow the corresponding steps

1

Always turn your

transmitter on first.

x

8

Press SET

to save position

x

Press SET

to save each position

Press/hold MENU

returns to driving mode

Press/hold MENU

returns to driving mode

Use Multi-Function

knob to set neutral

Use throttle

trigger to set desired

max throttle or brake

Press SET

green LED blinks (x8)

returns to driving mode

8

x

8

returns to driving mode

Press/hold MENU

Turn steering wheel

to test settings

x

Press SET

to save position

Press SET to save

Use trigger to test

Press/hold MENU

IF END POINTS

Press/hold MENU

returns to driving mode

8

Press/hold MENU

returns to driving mode

IF END POINTS

Press/hold MENU

returns to driving mode

ARE OK:

ARE OK:

IF END POINTS

NEED TO BE

CHANGED:

Press SET

and repeat steps 6-8

IF END POINTS

NEED TO BE

CHANGED:

Press SET

and repeat steps 7-9

.

°

1.5

140701

camber angle

Shafts slightly above level

TOP

BOTTOM

X

rear suspension

Factory Set Up

Driver: ______________________________________________

Date: ________________________ Air Temp: _____________

Event: ______________________________________________

Track/City: __________________________________________

Qual./Finish _________________________________________

shock positionshock position ride heightride height

camber link positioncamber link position

Position 1

Position 2

Position 3

X

Top

X

C-hub

Negative

toe angle

Position 4

Position 5

K

00

1

Greased

track conditionsbody type

K

0

3

High Med. LowTraction:

Surface: Smooth Med. Rough

Tight Med. OpenSize:

Yes NoWatered:

(Blue as labeled)4°

(Blue reversed)1°

(Black plastic)2.5°

Top

Bottom

X

X

13T

54T

Pinion ___________________

Spur ____________________

3s

rear shocks

X

BlackBlack

motor / drivetrain

01.5 1.6

VXL-

ESC __________________________________

4x4

Velineon 3500

750701-888-TRAXXAS, TRAXXAS.COM

6200 TRAXXAS WAY, McKINNEY, TEXAS

X

RearFront

Flat Down Flat Up

°

1.5

4 6

Motor __________________

Battery _________________

Rear

X

Slipper

Center Differential _________ wt

SCT Off-Road

Stock Slash

Traxxas

Front Differential _________ wt Rear Differential _________ wt

Slash

X

0

(Flush)

Driveshafts level

TOP

A A

front suspension

X X

B B

C C

BOTTOM

X

2 2

3 3

4 4

Position 1

5 5

Position 2 Bottom

Position 3

Position 4

X

setup sheet

camber angle bump steer

In

Out

toe angle

Negative

front shocks

°

0

Tire Type ________________

Tire Insert _______________

Piston _____________mm Piston _____________mm

wheels / tires

30 3

Oil _____________ wt Oil _____________ wt

Springs (Color) ___________________ Preload _________mm Springs (Color) ___________________ Preload _________mm

Front

S1 Compound S1 Compound

Tire Type ________________

Wheel __________________

sway bars

SCT Off-Road

Stock Slash

Tire Insert _______________

Wheel __________________

Front Rear

1

______mm ______mm

weight / balance

X

Silver SilverBlack Black

Battery Placement:

Weight Bias: Front _____% Rear _____% Weight: _______lbs.

TOP

BOTTOM

camber angle

Position 1

Position 4

Position 2

Position 3

°

Negative

toe angle

Position 5

140701

(Blue as labeled)4°

(Blue reversed)1°

(Black plastic)2.5°

Top

Bottom

Tight Med. OpenSize:

Yes NoWatered:

Pinion ___________________

Spur ____________________

High Med. LowTraction:

track conditionsbody type

rear suspension

Driver: ______________________________________________

Date: ________________________ Air Temp: _____________

Event: ______________________________________________

Track/City: __________________________________________

Qual./Finish _________________________________________

shock positionshock position ride heightride height

TOP

A A

B B

BOTTOM

C C

2 2

3 3

camber link positioncamber link position

4 4

5 5

front suspension

Top

C-hub

Position 1

Position 2 Bottom

Position 3

Position 4

camber angle bump steer

rear shocks

Flat Down Flat Up

°

Negative

front shocks

motor / drivetrain

Motor __________________

Rear

Piston _____________mm Piston _____________mm

ESC __________________________________

Battery _________________

Slipper

Tire Type ________________

Tire Insert _______________

wheels / tires

Surface: Smooth Med. Rough

750701-888-TRAXXAS, TRAXXAS.COM

6200 TRAXXAS WAY, McKINNEY, TEXAS

Center Differential _________ wt

Front Differential _________ wt Rear Differential _________ wt

RearFront

Wheel __________________

sway bars

weight / balance

setup sheet

In

Out

toe angle

Front

°

Oil _____________ wt Oil _____________ wt

Springs (Color) ___________________ Preload _________mm Springs (Color) ___________________ Preload _________mm

Tire Type ________________

Tire Insert _______________

Wheel __________________

Front Rear

______mm ______mm

Silver SilverBlack Black

Battery Placement:

Weight Bias: Front _____% Rear _____% Weight: _______lbs.

NOTES

6200 TRAXXAS WAY, McKINNEY, TEXAS 75070

1-888-TRAXXAS

150114 68077-1-OM-EN-R00

owner’s manual