Traxxas VXL 4WD 7008, VXL 4WD 7108 User Manual

BRUSHLESS

owner’s manual

MODEL 7008

MODEL 7108

INTRODUCTION

3 BEFORE YOU

PROCEED

4 SAFETY

PRECAUTIONS

5 TOOLS, SUPPLIES

AND REQUIRED

EQUIPMENT

5 DECORATING

YOUR MODEL

6 ANATOMY OF THE

1/16 SLASH VXL 4WD

7 ANATOMY OF THE

1/16 E-REVO VXL

8 QUICK START:

GETTING UP

TO SPEED

9 THE TRAXXAS

TQ RADIO SYSTEM

16 ADJUSTING THE

ELECTRONIC SPEED

CONTROL

Thank you for purchasing a Traxxas 1/16 scale electric racing truck.
The 1/16 E-Revo VXL and 1/16 Slash VXL 4WD models combine
technologies proven by the 7-time National Monster Truck
Champion Revo and the innovative E-Revo electric racing monster
truck. Both Traxxas 1/16 models are designed for high-performance
driving, with a low center of gravity, balanced weight distribution,
lightweight and high-strength materials, and the precise
engineering that is the hallmark of all Traxxas trucks.

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 condent that you own one of the best­performing 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 setup and operating procedures that allow you to unlock
the performance and potential that Traxxas engineers designed
into 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 assure you the highest level of customer satisfaction possible.
We truly want you to enjoy your new model!

Traxxas Support

Traxxas support is with you every step of the
way. Refer to the next page to nd out how to
contact us and what your support options are.

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 nd 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.

18 DRIVING YOUR MODEL

21 TUNING

ADJUSTMENTS

26 MAINTAINING

YOUR MODEL

2 • TRAXXAS

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
identied 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.

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. 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 satised with your new model!

Traxxas
1100 Klein Road
Plano, Texas 75074
Phone: [phone]
Toll-free 1-888-TRAXXAS

Traxxas U.K.
P.O. Box 1128
Winterbourne, Bristol
BS36-2SH
England
Phone: [phone]

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

Entire contents ©2009 Traxxas.
Traxxas, Ready-To-Race, Ready­To-Win, Titan, Velineon, 1/16
Slash VXL 4WD, 1/16 E-Revo VXL
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 identication.
No part of this manual may be
reproduced or distributed in print
or electronic media without the
express written permission of
Traxxas. Specications are subject
to change without notice.

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

TRAXX AS • 3

SAFETY PRECAUTIONS

bluehighway font

Choose the Model That is Right For You. For individual Models

No previous experience with radio controlled models is required.
Models require a minimum of setup, maintenance, or support equipment.

Previous experience with radio controlled models is recommended.
Models require a higher level of setup, maintenance, or support equipment.

No previous experience with radio controlled models is required.
Model requires a minimum of setup, maintenance, or support equipment.

Previous experience with radio controlled models is recommended.
Model requires a higher level of setup, maintenance, or support equipment.

BELOW TEXT HAS BEEN UPDATED on 3-14-07
Kent wants maintenance text to be at the END of the paragraph.-- KB

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.

Previous experience with
radio controlled models
is recommended. Models
require a higher level of
setup, maintenance, or
support equipment.

1

4 • TRAXXAS

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 conict with or disrupt pedestrian
or vehicular trafc.

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, batteries, 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 that were provided with the battery
pack and your charger. It is your responsibility to charge and care
for the battery backs properly. In addition to your battery and
charger instructions, here are some more tips to keep in mind.

Use the supplied charger to charge the included

battery. See “Use The Right Charger” on page 11.
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).
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.
Children should have responsible adult supervision when

charging and handling batteries.

SPEED CONTROL

Disconnect the Battery: Always disconnect the battery from the

speed control when not in use.
Transmitter on First: Switch on your transmitter rst 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 airow

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 modied speed controls can

be subject to a rewiring fee when returned for service. Removing

the battery connector on the speed control or using connectors

with no reverse-polarity protection 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.
No Reverse Voltage: The speed control is not protected against

reverse polarity voltage. When changing the battery and/or

motor, be sure to install the same type of connectors to avoid

reverse polarity damage to the speed control. Removing the

battery connectors on the speed control or using the same-gender

connectors on the speed control will void the product’s warranty.
No Schottky Diodes: External Schottky diodes are not compatible

with reversing speed controls. Using a Schottky diode will damage

the electronic speed control and void the 30-day warranty.

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

2.0mm “T” wrench 4-way wrench2.5mm ball driver wrench1.5mm “L” wrench

NiMH battery charger

Body clips6-cell 2/3A NiMH battery

REQUIRED EQUIPMENT

(sold separately)

8 AA alkaline

batteries

DECORATING YOUR MODEL

For more information on
batteries, see Use the Right
Batteries on page 10.

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

• Thin, hobby-quality
cyanoacrylate instant tire
glue (CA glue)

• Hobby knife

• Side cutters and/or needle
nose pliers

• Philips screwdriver

• Soldering iron

APPLYING THE DECALS

The main decals for your model

have been applied at the factory.
The decals are printed on self­adhesive clear mylar and are die­cut 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 nger 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.

TIRE GLUING

The factory tires on your model are already glued to the rims. The
tires must be glued to the rims to prevent the rims from spinning inside
the tires. The instructions here are provided to show you how to glue
replacement tires to the rims in the future. Use CA tire glue available
from your local hobby dealer. You can glue the tires without removing
the wheels from the truck. For clarity, these instructions show the process
with the wheels removed.

1. Remove a wheel from the model using
the larger (7mm) end of the universal
wrench.

2. Use your thumb to push the side of the
tire away from the rim. Place one or two
drops of CA glue into the opening and
release the tire. Capillary action will draw
the glue around the bead of the tire.

3. Repeat step two at four or five points around the rim, until the tire
is completely secured to the rim. Turn the rim over and repeat the
process for the inside of the rim/tire. Repeat for the other three wheels.

4. Reinstall the wheels, make sure none of the axle pins have fallen out
from behind the hex hubs.

9

TRAXX AS • 5

ANATOMY OF THE 1/16 SLASH VXL 4WD

Rear Half Shaft

Turnbuckle

Rear Body
Mount

Rear
Bumper

Battery Compartment Vent

Battery Door Release Tab

Antenna Mount

Battery Compartment Door

Receiver Box

Slipper Clutch

Hex Hub

Pivot Ball

Axle Carrier

Turnbuckle

Push Rod

Rocker

Front
Bumper

Rocker

Push Rod

Rear Suspension
Arm

Traxxas High-Current
Connector

6 • TRAXXAS

Electronic Speed
Control (VXL-3m)

Motor (Velineon

Transmission

Steering Servo

Chassis

®

380)

Front Body

Mount

Oil Shock
(Damper)

Front

Suspension Arm

Spring Preload

Adjuster

ANATOMY OF THE 1/16 E-REVO VXL

Rear Half Shaft

Turnbuckle

Rear Body
Mount

Wing

Battery Compartment Vent

Battery Door Release Tab

Antenna Mount

Battery Compartment Door

Receiver Box

Slipper Clutch

Hex Hub

Pivot Ball

Axle Carrier

Turnbuckle

Push Rod

Rocker

Front

Bumper

Front Body

Mount

Rocker

Push Rod

Rear
Suspension Arm

Motor (Velineon

Traxxas High-Current

Transmission

Steering Servo

Chassis

Electronic Speed

Control (VXL-3m)

®

380)

Connector

Oil Shock
(Damper)

Front

Suspension Arm

Spring Preload

Adjuster

7 • TRAXXAS

QUICK START: GETTING UP TO SPEED

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.

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 9. Detail your model • See page 5

For your own safety, understand where carelessness and misuse

Apply other decals if desired.

could lead to personal injury.

2. Charge the battery pack • See sidebar, page 11 10. Drive your model • See page 18

Fully charge the battery pack included with your model. Driving tips and adjustments for your model.

3. Install the antenna • See page 12 11. Maintaining your model • See page 26

Install the antenna mast in the model. Follow these critical steps to maintain the performance

of your model and keep it in excellent running condition.

4. Install batteries in the transmitter • See page 12

The transmitter requires 8 AA alkaline or rechargeable batteries.

5. Install the battery pack • See page 13

Install the included battery pack in your model.

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

8 • TRAXXAS

6. Turn on the radio system • See page 15

Make a habit of turning the transmitter on rst, and off last.

7. Check servo operation • See page 15

Make sure the steering servo is working correctly.

8. Range test the radio system • See page 15

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

THE TRAXXAS TQ RADIO SYSTEM

MOTOR

Your model is equipped with the Traxxas TQ Radio System is a 2-channel
system that provides high-power output up to a quarter mile. Your model
uses one steering servo and an electronic speed control. The receiver is
equipped with four channels and dual channel 1 outputs.

TQ TRANSMITTER

Throttle Neutral Adjust

Antenna

Throttle Trim

Steering Trim

Throttle
Trigger

Steering Wheel

1/16 E-REVO VXL & SLASH VXL 4WD
WIRING DIAGRAM

Channel 1
Steering Servo

Antenna

Crystal

Receiver

Channel 2
VXL-3m
Electronic
Speed Control

*Extra CH1, CH3 and BATT/CH4 are not used

Motor
(Velineon® 380)

High-Current
Connector

VXL-3m ELECTRONIC SPEED CONTROL

VXL-3m Wiring Diagram

Power Switch

Battery Compartment

Servo

Reversing

Switch

Power Indicator

To Motor

EZ-Set
Button

High-Current

Battery Connector

Heat Sinks

LED

TRAXX AS • 9

THE TRAXXAS TQ RADIO SYSTEM

Channel

Frequency

Band

Flag

Color

Traxxas
Part No.

1 26.995 Brown 2031

2 27.045 Red 2032

3 27.095 Orange 2033

4 27.145 Yellow 2034

5 27.195 Green 2035

6 27.255 Blue 2036

Use the Right Batteries

Your transmitter uses AA
batteries. Use new alkaline
batteries, or rechargeable
batteries such as NiCad or
NiMH (Nickel Metal Hydride)
batteries in your transmitter.
Make sure rechargeable
batteries are fully
charged according to the
manufacturer’s instructions.

If you use rechargeable
batteries in your
transmitter, be aware
that when they begin
to lose their charge, they lose
power more quickly than
regular alkaline batteries.

Caution: Discontinue running
your model at the rst sign of
weak batteries (ashing red
light) to avoid losing control.

RADIO SYSTEM TERMINOLOGY

Please take a moment to familiarize yourself with these radio and
power system terms. They will be used throughout this manual.

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.

Channel - The 27 MHz frequency band is divided into 6 channels

so that up to six models can be operated simultaneously. Each
channel is referred to by its ag color and channel number, as
shown below.

the signals from the electronic speed control and the motor
synch with each other. The VXL-3m is optimized to virtually
eliminate cogging.

Crystal (X-tal) - The plug-in device that determines which channel

the radio system will operate on. For each channel, there are
two crystals, one for the receiver and one for the transmitter. Of
those two crystals, the one marked with the lower number (.455
MHz lower) must be inserted into the receiver.

Current - Current is a measure of power ow through the

electronics, usually measured in amps. If you look at wire like a
garden hose, current is a measure of how much water is owing
through the hose.

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

the electronic motor control inside the model. Electronic speed
controls use power more efciently than mechanical speed
controls so that the battery runs longer. An electronic speed
control also has circuitry that prevents loss of steering and
throttle control as the battery loses its charge.

Frequency band - The radio frequency used by the transmitter to

send signals to your model. All Traxxas RTR models operate on a
27 MHz frequency band.

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

The 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.

10 • TR A X X AS

Clearing your frequency - A routine, verbal check to make sure

nobody else in your area is operating on the same channel.
Always clear your frequency by calling out your channel number
before operating your model. Wait or move to another area if
your channel is already being used.

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

LiPo - Abbreviation for Lithium Polymer. Rechargeable LiPo

battery 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.

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

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

Neutral position - The standing position that the servos seek

when the transmitter controls are at the neutral setting.

THE TRAXXAS TQ RADIO SYSTEM

NiCad - Abbreviation for nickel-cadmium. The original

rechargeable 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.

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 ow of current through it.
When ow is constricted, energy is converted to heat and is
lost. Traxxas power systems are 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.

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.

Servo - Small motor unit in your model that operates the

steering mechanism.

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

steering instructions to your model.

Trim - The ne-tuning adjustment of the neutral position of the

servos, made by adjusting the throttle and steering trim sliders
on the face of the transmitter.

Thermal Shutdown Protection - Temperature sensing electronics

used in the 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 TQ 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 ow in the hose,
voltage corresponds to the pressure that is forcing the water
through the hose.

Use the Right Charger

Your model includes a ‘wall
charger’ that will charge
the supplied battery in
approximately six hours.
Unplug the battery from
the charger, and unplug the
charger from the wall, when
charging is complete.

For faster charging, the
Traxxas TRX Power Charger
(item #3030X) may be used in
combination with a Traxxas
High Current Plug adapter
(item #3062). This will reduce
charging time to about one
hour. The Power Charger will
detect when the battery pack
is fully charged, and stop
charging automatically.

Certain aftermarket chargers
may also be used to charge
the included battery, but
use caution when selecting
a charger. ‘Timer’ or
mechanical chargers with
a clockwork timer are not
recommended as they may
overcharge the battery. We
suggest you ask your local
hobby dealer to help you
select an appropriate charger,
or call 1-888-TRAXXAS so our
customer support team can
help you.

No matter which charger you
choose, never leave a battery
unattended while charging.
Always follow the charger
manufacturer’s instructions.

2

TRAXX AS • 11

THE TRAXXAS TQ RADIO SYSTEM

If the power indicator
doesn’t light red, check the
polarity of the batteries.
Check rechargeable
batteries for a full charge.

Spray a little window cleaner
on the antenna wire to make
it easier to push through the
antenna tube.

If there are any kinks in the
black antenna wire, it will
be more difcult to push
through the antenna tube.
Pull the wire straight by
sandwiching it between your
thumb and index nger and
running your ngers along
the length of the wire (with
medium pressure).

Don’t shorten the length of
the antenna wire. Its length
is tuned to the frequency
band; cutting it could
severely shorten the radio
system’s range.

INSTALLING TRANSMITTER BATTERIES

Your TQ transmitter uses 8 AA batteries (see sidebar, page 10).
The battery compartment is located in the base of the transmitter.

1. Remove the battery compartment door by pressing the tab and
lifting the door up.

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 power indicator for a solid
red light.

If the power indicator light ashes, then the transmitter batteries
are weak, discharged or possibly installed incorrectly. Replace with
new or freshly charged batteries. The power indicator light does not
indicate the charge level of the battery pack installed in the model.

SETTING UP THE ANTENNA

1. Locate the black antenna wire that
exits the receiver box.

2. Pull the wire straight with your ngers
and then insert the end of the wire
into one end of the antenna tube (the
antenna tube can be found in the
documents bag). Push the wire all the
way through the antenna tube. The
wire is longer than the tube. Do not
cut or shorten the antenna wire.

3. Insert the base of the tube into the
antenna mount. Take care not to crimp
the antenna wire.

4. Using the supplied 1.5mm “L” wrench,
thread the 1.5mm set screw into the
opening next to the antenna. Tighten
the set screw until it is ush with the
top of the opening.

5. Fold the top of the antenna wire over
the top of the antenna tube. Slide
the antenna tip onto the top of the
antenna tube. Do not cut or shorten
the antenna wire.

6. The receiver antenna installation is
complete. Always fully extend the
transmitter’s telescoping antenna
when running your model. Make a
habit of holding the transmitter so the
antenna points straight up.

Antenna

Tip

Antenna

Tube

1.5mm

Wrench

Set

Screw

Antenna

Mount

See page 20 for more
information about the
receiver box and maintaining
a watertight seal.

12 • TR A X X AS

3, 4

THE TRAXXAS TQ RADIO SYSTEM

INSTALLING THE BATTERY PACK

Your model includes a 7.2-volt battery pack. To properly balance the
model, it should be installed in the battery compartment on the left side
of the model. Follow these steps to install the battery:

Battery Installation

1. Open the battery
compartment door by
pressing on the release tabs.

2. Install the battery pack with
the battery wires facing the
rear of the model.

3. Route the battery wire through
the slot near the vent.

4. Close the battery door,
making sure not to pinch the
battery wires. Be sure both
release tabs are fully engaged
with the door. Do not connect the battery pack to the ESC at this time.

Note: always unplug the battery and remove from the model after use.

Using LiPo Packs in Your Model

The VXL-3m is compatible with 2S and 3S LiPo packs, and is equipped
with Low Voltage detection circuitry to prevent over-discharging. Make
certain LiPo mode is selected (see page 17 for details) when using LiPo
packs in your model.

Using an Additional Battery for Increased Run Time

Traxxas 1/16 models only require one battery pack, but the chassis can

accept two batteries. Your model can be run with two battery packs to
extend run time. The batteries must be connected in parallel, which will
combine the capacity of the two batteries (for example, two 7.2-volt
1000mAh packs connected in parallel will deliver a total capacity of
2000mAh, but total voltage will remain 7.2 volts). This is easily done with
a parallel Y-harness (Part #3064, sold separately). Be sure to only use the
Y-harness with identical battery packs; do not mix batteries of different
chemistries or capacities.

When operating your model with two batteries, be careful
to monitor the temperature of the speed control and motor
to prevent overheating. Stop running your model and allow
it to cool if the speed control’s thermal overload protection
activates or if the motor temperature exceeds 200° F.

Battery Wire Slot

Battery Orientation

Using an Additional Battery For Increased Speed

An additional battery may also be used to increase the top speed of

your model, by connecting the batteries in series using a Traxxas series
connector (Part #3063, sold separately). This also requires a gearing change
using the supplied, optional pinion gear as described on page 23.

Precautions

• The High Speed dual-battery battery and gearing

conguration is for high-speed running on smooth
surfaces only. Avoid repetitive hard acceleration to prevent
overstressing the motor, speed control and batteries.

• Failure to install the appropriate gearing can cause failure

of the motor, speed control and batteries when running the
model on 12 NiMH cells. See the gearing chart on page 23 for
more information about properly gearing your model.

• Make certain both batteries are fully charged before

installing them in your model. Installing a fully charged pack
and a partially discharged pack may lead to overdischarging
and damage to the partially discharged battery.

• Do not mix batteries of different brands, chemistries or

capacities. Only genuine Traxxas batteries are approved for
dual-battery use in this model.

• Stop running your model and allow it to cool if the speed

control’s thermal overload protection activates or if the
motor temperature exceeds 200° F.

THE TRAXXAS HIGH CURRENT CONNECTOR

Your model is equipped with the Traxxas High-

Current Connector. Standard connectors restrict
current ow and are not capable of delivering the
power needed to maximize the output of your model.
The Traxxas connector’s gold-plated terminals with a
large contact surfaces ensure positive current ow with the least amount of
resistance. Secure, long-lasting, and easy to grip, the Traxxas connector is
engineered to extract all the power your battery has to give.

To run this model, your batteries must be equipped with Traxxas High-

Current Connectors. Batteries can either be purchased new with Traxxas
connectors installed or Traxxas connectors can be purchased to install on
battery packs you already own. See sidebar for packages available from
your hobby dealer.

The typical Molex
your model. It creates resistance that becomes a bottleneck to
current ow. If your battery pack is equipped with a Molex

connector, it must be replaced with a Traxxas High-Current
Connector to mate with the electronic speed control.

®

style connector is inadequate for use in

Molex

connector

The following Traxxas High
Current Connector packages
are available from your
hobby dealer. When using
adapters, be careful not to
exceed the current rating of
the Molex connector.

Part #3060
Single Male/Female

Part #3061
Male Charge Adapter

Part #3062
Female Charge Adapter

For best off-road handling
with two battery packs,
consider installing stiffer
springs on your model.
Traxxas offers accessory
springs for this purpose; see
the parts list included with
your model for part numbers.

5

TRAXX AS • 13

Part #3080
2-Pack Female

Part #3070
2-Pack Male

THE TRAXXAS TQ RADIO SYSTEM

Brake/Reverse

Neutral

Accelerate

T

U

R

N

L

E

F

T

T

U

R

N

R

I

G

H

T

Don’t push the transmitter
antenna down from the
top. Pull it down from the
bottom, one segment at a
time, to prevent binding and
kinking the antenna mast.

14 • TR A X X AS

TQ RADIO SYSTEM CONTROLS

Electronic Throttle Trim

The electronic throttle trim located on the face of the transmitter
adjusts the neutral (center) point of the electronic speed control.
This control has been preset for you at the factory.

Electronic Steering Trim

The electronic steering trim located on the face of the transmitter
adjusts the neutral (center) point of the steering servo when
the servo is at rest. Adjust this control to make the model drive
straight with no steering input at the wheel.

Servo Reversing Switches

The servo reversing switches are located on the front of the
transmitter, next to the on/off switch. Moving a switch reverses
the direction of the corresponding servo.

Each switch corresponds to a channel, as shown below. For
example, if you turn the steering wheel to the right and your
wheels turn left, you would move the Channel 1 switch to
correct the servo direction. It may be necessary to adjust the
corresponding trim control after moving a switch.

Channel

TQ RADIO SYSTEM ADJUSTMENTS

In addition to the electronic throttle and steering trim controls,
your radio system features throttle neutral adjustment and servo
reversing switches. These are preset at the factory and should

not require further adjustment.

Default Setting

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: If you change throttle travel, you
will need to reprogram the electronic
speed control.

1

2

Servo

Steering

Throttle

THE TRAXXAS TQ RADIO SYSTEM

Channel 1

Brown

Channel 2

Red

Channel 3

Orange

Channel 4

Yellow

Channel 5

Green

Channel 6

Blue

0°0°

TQ RADIO SYSTEM RULES

Each time you prepare to run your model, you

must clear your frequency to be sure no one
else in the area is using the same channel as
you. There are six possible channels, numbered
1 through 6. Each is represented by a color.
Look at the crystal plugged into the back of
your transmitter to determine which channel
your model is assigned to.

Always turn your TQ transmitter on rst 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.

Always have the transmitter turned on before plugging in

the battery.

Always use new or freshly charged batteries for the radio

system. Weak batteries will limit the range of 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 rst.

2

Plug in the battery.

see TQ Radio System Setup, step 4.

3

Turn on the model.

TQ RADIO SYSTEM SETUP

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

1. Fully extend the chrome antenna mast on the transmitter and
turn the switch on. The red indicator light on the transmitter
should be solid red (not ashing).

2. Elevate the model so that all four tires are off the ground.
If you are holding the model, make sure hands and clothing are
clear of the wheels and other moving parts on 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 the ESC set button for ½ second, until
the LED shines GREEN, then immediately release the button.
This turns the model on (see page 16 for more on ESC setup and
operation). To turn the ESC off, press the set button until the
green LED turns off. Always disconnect your battery when the

model is not in use.

5. Turn the steering wheel on the transmitter back and forth and
check for rapid operation of the steering servos. 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 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 apply the throttle trigger to ensure that you have full
forward and reverse operation, and that the motor stops when
the throttle trigger is at neutral.

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

RANGE-TESTING THE TQ RADIO SYSTEM

Before each running session with your model, you should range­test 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 securely. Make sure hands
and clothing are clear of the wheels and other moving parts
on the model.

3. Make sure your transmitter antenna is fully extended, and then
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.

Remember, always turn the
TQ transmitter on rst and
off last to avoid damage to
your model.

Your speed control was
adjusted to the radio from
the factory. It is possible
for the throttle trim control
on the transmitter to have
moved during transit
or while handling the
transmitter. If the LED blinks
fast green when the ESC is
turned on, this means either
the transmitter is turned
off, or the throttle trim
has moved from its preset
position. If anything more
than a slight adjustment of
the throttle trim control is
required, then you should
readjust your speed control.
Refer to the adjustments
section on page 16.

When rechargeable batteries
begin to lose their charge,
they will fade much faster
than alkaline dry cells. Stop
immediately at the rst sign
of weak batteries. Never turn
the transmitter off when the
battery pack is plugged
in. The model could run out
of control.

6, 7, 8

TRAXX AS • 15

ADJUSTING THE ELECTRONIC SPEED CONTROL

VXL-3m LED codes

Solid Green: VXL-3m power on
light. Low Voltage Detection is
ON (LiPo setting).

Solid Red: VXL-3m power on light.
Low Voltage Detection is OFF
(NiCad/NiMH setting).

Fast Blinking Red: Thermal Shutdown
Protection Stage 1. If the motor has
lower than normal power and the VXL-3m
is hot, the VXL-3m has entered Stage 1
Thermal Shutdown Protection to guard
against overheating caused by excessive
current ow. If the motor has no power
and the VXL-3m is very hot, the VXL-3m
has entered Stage 2 Thermal Shutdown
Protection and has automatically shut
down. Let the VXL-3m cool. Make sure
your model is properly geared for the
conditions (see page 23).

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

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

Alternating; Blinks Red then Green: If
the motor has no power, the VXL-3m
has entered Over Voltage Protection.
If a battery with too high voltage is
used, the VXL-3m will go into a failsafe
mode. Warning: If input voltage exceeds
approximately 20 volts, the ESC may be
damaged. Maximum peak input voltage
limits are 12.6V in LiPo Mode (see page

17) and 18V in NiMH Mode.

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

14) is incorrectly set. Adjust the Throttle
Trim to the middle “0” setting.

The electronic speed control is factory set and should not require any
adjustments. These instructions are provided for your reference.

Transmitter Adjustments for the electronic speed control

Before attempting to program your ESC, it is important to make
sure your TQ 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:

1. Set the throttle neutral switch to the 50/50 setting. This adjusts
the transmitter’s throttle trigger throw to 50% for throttle and
50% for braking and reverse.

2. Set the throttle trim control to the middle “0” setting.

3. Set the Channel 2 servo reversing switch to the left position. Do
not change the position of any of the servo reversing switches
after programming the ESC.

4. You are now ready to program your speed control.

Setup Programming (Calibrating your ESC and transmitter)
Read through all of the following programming steps before you
begin. If you get lost during programming or receive unexpected
results, simply unplug the battery, wait a few seconds, plug the battery
back in, and start over.

1. Disconnect each of the motor wires between the ESC and the
motor. This is a precaution to prevent runaway when the speed
control is turned on before it is programmed.

2. Connect a fully charged battery pack to the ESC.

A

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

4. Press and hold the EZ-Set button (A). The LED
will rst turn green and then red. Release the
EZ-Set button.

Green then Red

B

5. When the LED blinks RED ONCE.
Pull the throttle trigger to the
full throttle position and hold it
there (B).

Once Red

C

6. When the LED blinks RED TWICE.
Push the throttle trigger to the
full reverse and hold it there (C).

Twice Red

7. When the LED starts ashing GREEN,

D

programming is complete. After the throttle is
returned to neutral, the LED will then shine solid
green or red (depending on the low-voltage

Solid

detection setting, see note below) indicating the
VXL-3m is on and at neutral (D).

ESC Operation
Note: In steps 1-7 below, Low Voltage Detection is turned off (factory

default) and the LED shines RED. If Low Voltage Detection is on, the
LED will shine GREEN instead of RED in steps 1-7 below.

To operate the speed control and test the programming, place the
vehicle on a stable block or stand so all of the driven wheels are off the
ground. Reconnect the motor wires. Always make sure that objects and
ngers are clear of the wheels.

1. With the transmitter on, press the EZ-Set button for ½ second,
until the LED shines GREEN, then immediately release the button.
This turns on the ESC. If you press and release too quickly, you
may hear the steering servos jump but the LED may not stay on.

2. Apply forward throttle. The LED will turn off until full throttle
power is reached. At full throttle, the led will shine 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 shine RED.

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

5. Move the throttle trigger forward again to engage reverse
(Prole #1). The LED will turn off. Once full reverse power is
reached, the LED will shine RED.

6. To stop, return the throttle trigger to neutral.

7. To turn the ESC off, press the EZ-Set button until the RED LED
turns off.

VXL-3m Thermal Shutdown Protection

The

VXL-3m

is also equipped with thermal shutdown protection. If the
operating temperature exceeds safe limits, the ESC will reduce power
to 50% and the LED will ash red. Additional heating will cause the
speed control to shut down completely until it reaches a safe operating
temperature. Traxxas encourages you to stop driving as soon as the
thermal overload protection is activated.

16 • TR A X X AS

ADJUSTING THE ELECTRONIC SPEED CONTROL

ESC Prole Selection

The speed control is factory set to Prole #1. To change the prole,
follow the steps on described on the next page. The speed control
should be connected to the receiver and battery, and the transmitter
should be adjusted as described previously. The proles are selected
by entering the programming mode.

ESC Prole Description
Prole #1 (Sport Mode): 100% Forward, 100% Brakes, 100% Reverse
Prole #2 (Race Mode): 100% Forward, 100% Brakes, No Reverse
Prole #3 (Training Mode): 50% Forward, 100% Brakes, 50% Reverse

Selecting Sport Mode (Prole #1)

1. Connect a fully charged battery
pack to the ESC and turn on
your transmitter.

2. With the ESC off, press and hold

Green to Red to Off

One blink Red

the EZ-Set button until the light
turns solid green, then solid red
and then begins blinking red
(indicating the Prole numbers).

Release

Solid Red

3. When the light blinks red once, release the EZ-Set button.

4. The light will then turn red and the model is ready to drive.

Selecting Race Mode (Prole #2)

1. Connect a fully charged battery
pack to the ESC and turn on
your transmitter.

2. With the ESC off, press and hold

Green to Red to Off

Two blinks Red

the EZ-Set button until the light
turns solid green, then solid red
and then begins blinking red
(indicating the Prole numbers).

Release

Solid Red

3. When the light blinks red twice, release the EZ-Set button.

4. The light will then turn red and the model is ready to drive.

Selecting Training Mode* (Prole #3)

1. Connect a fully charged battery
pack to the ESC
and turn on your transmitter.

2. With the ESC off, press and hold

Green to Red to Off

Three blinks Red

the EZ-Set button until the light
turns solid green, then solid red
and then begins blinking red
(indicating the Prole numbers).

Release

Solid Red

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

4. The light will then turn red and 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 a Mode is selected.

LiPo Battery Mode with Low Voltage Detection

The VXL-3m ESC is equipped with built-in Low Voltage Detection
for safe use with Lithium Polymer (LiPo) batteries. The Low Voltage
Detection circuitry constantly monitors the battery voltage. When the
battery voltage begins to reach the minimum recommended discharge

VXL-3m

voltage threshold for LiPo battery packs, the

will limit the
power output to 50% throttle. When the battery voltage attempts to fall
below the minimum threshold, the

VXL-3m

will shut down all motor
output. The LED on the speed control will slowly blink red, indicating a
low voltage shutdown. The

VXL-3m

will stay in this mode until a fully
charged battery is connected. The electronic speed control is factory
set with Low Voltage Detection turned off. Be certain to activate Low

Voltage Detection if you install LiPo batteries in your model.

To turn Low Voltage Detection on (LiPo setting):

1. Make sure the LED on the ESC 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 ON.

To turn Low Voltage Detection off (NiMH setting):

1. Make sure the LED on the ESC 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 OFF.

Never use LiPo batteries while Low Voltage Detection is turned off.

Patent Pending Training
Mode (Prole #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 ESC is set to Prole 1
(Sport Mode) as the default.
To quickly change to Prole 3
(Training Mode), with the
transmitter on and the ESC
turned off, press and hold
the SET button until the light
blinks red three times and then
release. For full power, turn off
the ESC then quickly change
back to Prole 1 (Sport
Mode) by pressing and
holding the SET button until
the light blinks red one time
and then releasing.

*Patent-pending

TRAXX AS • 17

DRIVING YOUR MODEL

18 • TR A X X AS

10

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 battery and motor.

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 and sluggish servos (slow to return to center). Stop
immediately at the rst sign of weak batteries. When the batteries in
the transmitter become weak, the red power light will begin to ash.
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.

High performance vehicles produce small vibrations which 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 2000 mAh battery pack will theoretically
run twice as long as a 1000 mAh 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 which 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 the included charger or 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 ESC cool.

Lower your gear ratio. Installing smaller pinion gears will lower your
gear ratio and cause less power draw from the motor and batteries,
and reduce overall operating temperatures.

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

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

Get plenty of airow across the ESC heat sinks.

RUNNING IN WET CONDITIONS

The 1/16 Slash VXL 4WD and 1/16 E-Revo VXL are designed with water­resistant 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 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.

The Traxxas TQ 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.

Even casual water contact can reduce the life of your motor. Special
care must be taken to modify your gearing and/or your driving style
in wet conditions to extend the life of the motor (details below).

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 (4mm or 3/16” diameter) in each tire. Each hole should be near
the tire centerline, 180 degrees apart.

3.

Conrm that the receiver box O-ring and cover are installed correctly
and secure. Make sure the screws are tight and the blue O-ring is not
visible protruding from the edge of the cover.

4.

Conrm that your batteries can be used in wet conditions.

5.

Use lower gearing (smaller pinion gears) 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

Motor life can be greatly reduced in mud and water. If the motor
get 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 wet motor. Do not
submerge the motor under water.

DRIVING YOUR MODEL

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.

After Running Your Vehicle in Wet Conditions

1. Drain the tires by spinning the tires at full throttle to “sling” the water
out. An easy way to do this is to remove the body and set the truck
upside down on a at surface. Apply full throttle so the tires spin and
throw the excess water out of the holes you cut into the tires.

2. Remove the battery.

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

7. Let the truck stand or you may blow 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.

• Front and rear differential: Remove, disassemble, clean, and re­grease the differentials. Refer to your exploded view diagrams for
help with disassembly and reassembly.

TRAXX AS • 19

DRIVING YOUR MODEL

• Transmission: Remove, disassemble,
and clean the transmission
components. No grease is required
for the nylon gears. Refer to your
exploded view diagrams for help with
disassembly and reassembly.

• Motor: Remove the motor, clean
with aerosol motor cleaner, and re-oil
the bushings (Titan 380 motor) or
bearings (Velineon 380 motor) with lightweight motor oil. 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. Remove the 2.5x8mm screws that secure the wire clamp.

2. Remove the 2.5x8mm screws that secure the receiver box lid to the
chassis. Lift the lid up and toward you to disengage the lid’s tab from
its slot in the chassis.

3. You can now access the receiver. Unplug the servo cables from the
receiver and remove the receiver.

Receiver Installation

A B

1. Route the antenna wire
out of the receiver box
cover (A). Place the cover
on the chassis.

2. Route the servo and

C

speed control leads into the receiver box cover.
Use the molded-in wire guides to align the
servo and speed control leads and antenna
wire (B).

D

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

4. Install the wire clamp and tighten the two

2.5x8mm screws securely (D).

5. Lift the receiver box cover and plug
the servo and speed control leads into
the receiver (E). Refer to page 9 for the
wiring diagram.

6. Bundle the wires so they t beneath the
receiver box cover. You may secure the
receiver to the chassis with mounting tape
if you wish, but this is not required. The
excess wire beneath the cover will prevent
the receiver from rattling.

7. Make sure the blue O-ring is properly
seated into the groove around the receiver
cover base so the cover will not pinch or
damage the O-ring. Snap the receiver box
cover into place (F).

8. Inspect the cover to make sure the O-ring
is not visible. If it is, remove the cover and
reposition the O-ring. With the O-ring and
cover properly seated, install the 2.5x8mm
screws and tighten them securely (G).

E

F

G

20 • TR A X X AS

TUNING ADJUSTMENTS

Compression 2/3

Sag (Droop) 1/3

Ride Height

Total Travel

Axle Centerline at Ride Height

Axle Centerline at Max Compression

Axle Centerline at Max Sag

The Slash VXL 4WD and E-Revo VXL are factory-tuned for optimum
performance in a wide variety of off-road conditions. To tailor the
performance and handling of your model to suit your driving style and
terrain, both models have a number of adjustable features. Gearing,
shock preload and damping, ride height and wheel camber can all be
easily adjusted.

SUSPENSION TUNING

Ride Height Adjustment

The Slash VXL 4WD and
E-Revo VXL both have
threaded shock bodies
that make it easy to adjust
ride height. Threading the
shocks’ preload collars
away from the caps will
raise the vehicle’s ride
height (the distance
from the chassis to the
ground), and reduce the
suspension’s down travel,
also known as ‘sag’ or
‘droop’. This can be helpful in rugged terrain where extra ground
clearance is needed. However, the vehicle’s center of gravity (CG) will
be raised, making it less stable.

Threading the shocks’ preload collars toward the caps will lower the
vehicle’s ride height and increase the suspension’s droop. This will
lower the vehicle’s CG and improve handling, but it will also reduce
ground clearance.

From the factory, Slash VXL 4WD and E-Revo VXL are set up as shown
in the illustration above. At rest, the suspension sags to about 1/3
of its total travel. This allows the suspension to extend so the wheel
can drop into depressions over rough terrain. This leaves 2/3 of the
total suspension travel for compression when absorbing bumps and
landing jumps. These settings are ideal for most surfaces, and only
small changes in ride height should be required to fine-tune the
vehicle’s handling for your particular surface.

Shock Oil

The 4 oil-filled 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. The Slash VXL 4WD’s shocks are filled with
SAE 30W oil. The E-Revo VXL’s shocks are filled with SAE 40W oil. Only
use 100% silicone oil in the shock.

Replacing Shock Oil

The shocks have to 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. If you cannot unscrew
the cap with your fingers,
pass the 2mm ‘L’ wrench
through the cap’s eyelet
so you can apply more
leverage. Turn the cap counterclockwise to loosen it.

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. The excess oil will bleed out of the small hole in the
shock cap.

7. Tighten the shock cap until snug.

Important: The shocks are
assembled at the factory with
a center-to-center distance
(between the rod end balls)
of 47.75mm. Any time the
shocks are removed and
disassembled, this distance
should be checked to ensure
proper operation of the
suspension.

47.75mm

TRAXX AS • 21

TUNING ADJUSTMENTS

A camber gauge (available
at your local hobby shop)
can be a useful tool for
alignment setting.

To achieve a good starting
point for the slipper clutch,
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 ¾ to 1 turn.

Static Camber Adjustment

The wheels can be set to have either
positive or negative camber (see
illustration below). The camber angle
changes as the wheel moves up and
down through its range of travel. Static
camber is the camber angle at the wheel
when the vehicle is set at its normal,
stationary ride height.

The suspension pivot balls located in the axle carriers adjust the static
camber. Camber is factory-set at negative 1-degree, with the pivot balls
threaded all the way into the suspension arms. To adjust static camber,
insert the supplied 2mm hex wrench into the pivot ball (compressing
the suspension until the arms are parallel to the ground will allow for
easier hex wrench engagement). Negative camber can be increased by
unthreading the lower pivot ball. Zero camber or positive camber (not
recommended) can be achieved by unthreading the upper pivot ball.
Note that camber changes will also effect the toe angle of the wheel
being adjusted.

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

Positive camber

Zero camber

Negative camber

TRANSMISSION TUNING

Adjusting the Slipper Clutch

Slash VXL 4WD and E-Revo VXL
are equipped with an adjustable
Torque Control slipper clutch which
is built into the large spur gear.
The purpose of the slipper clutch
is to prevent over-stressing of the
drivetrain and transmission gears. It may also be used to regulate the
amount of power sent to the rear wheels to prevent tire spin. When it
slips, the slipper clutch makes a high-pitch, whining noise.

To adjust the slipper clutch, remove the receiver box cover.
The slipper clutch is integrated into the main spur gear on the
transmission. The slipper clutch is adjusted using the spring-loaded
locknut on the slipper shaft. Use the supplied universal wrench.
To tighten or loosen the slipper nut, insert the 1.5mm hex wrench
into the hole in the end of the slipper shaft. This locks the shaft for
adjustments. Turn the adjustment nut clockwise to tighten (less
slippage) and counter-clockwise to loosen (more slippage)

Tuning The Sealed Gear Differentials

The Slash VXL 4WD and E-Revo VXL’s front and rear gear differentials
allow the left and right wheels to spin at different speeds while turning
so that the tires do not scuff or skid. This decreases the turning radius
and increases steering performance.

The performance of the differentials can be tuned for different driving
conditions and performance requirements. The differentials are filled
with silicone differential fluid, and 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 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. Your model

22 • TR A X X AS

will generally benefit from higher viscosity oil when climbing, rock
crawling, 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.

From the factory, both the differentials are filled with SAE 30,000W
viscosity silicone oil. Only use silicone oil in the differentials. Traxxas
sells SAE 10,000W and SAE 50,000W viscosity oil (see your parts list).
The differentials have to be removed from the vehicle and disassembled
to change/replace oil.

MOTOR AND GEARING

Extensive testing has been done to determine the best gear ratios
for the Slash VXL 4WD and E-Revo VXL models. The stock gearing
balances power, speed, and efciency to optimize the performance
of the models. However, you may wish to try different gear ratios
in order to customize the performance of your model. The gearing
chart on this page shows appropriate gearing for both models.

By installing a pinion with fewer teeth, or a spur gear with more
teeth, the transmission’s nal drive ratio is increased. This means
greater rpm is required to achieve a given speed. Using a numerically
higher gear ratio will increase torque, but reduce top speed.
Installing a pinion with more teeth, or a spur gear with fewer teeth,
will decrease the nal drive ratio, which will generally increase top
speed but reduce torque. However, installing too large a pinion will
“overgear” the car, which will reduce performance and may overheat
the motor and speed control. Use the following formula to calculate
the overall ratio for combinations not listed on the gear chart:

# Spur Gear Teeth

# Pinion Gear Teeth

Gearing for 50+mph

The included “High Speed” pinion gear will allow your model to
reach 50+mph when used with an additional Power Cell Series 1
battery (Part #2925) and (Part #3063) series connector (battery and
series connector sold separately).

x 5.04 = Final Gear Ratio

45 50 55

11

12

13

14

15

16

17

18

19

20

21

10.80 12.00 13.20

22

10.31 11.45 12.60

Pinion Gear

23

9.86 10.96 12.05

24

9.45 10.50 11.55

25

9.07 10.08 11.09

26

8.72 9.69 10.66

27

8.40 9.33 10.27

28

8.10 9.00 9.90

29

7.82 8.69 9.56

30

7.56 8.40 9.24

31

7.32 8.13 8.94

32

7.09 7.88 -

33

6.87 7.64 -

Spur Gear

- - 25.20

- - 23.10

- - 21.32

- - 19.80

- - 18.48

- 15.75 17.33

- 14.82 16.31

- 14.00 15.40

- 13.26 14.59

- 12.60 13.86

TUNING ADJUSTMENTS

Gearing Compatibility Chart

The chart on the left shows a full
range of gear combinations. The
stock ratio for E-Revo VXL is shown in
blue. The stock ratio for Slash VXL is
shown in red.

The gear combinations in gray are
not suitable for either model when
using the included 6-cell battery,
speed control and motor. These gear
combinations have been included in
this chart as they may be used with
certain other aftermarket equipment
combinations.

Stock 7108 E-Revo VXL

Stock 7008 Slash VXL 4WD

Acceptable range 7008 & 7108

Acceptable range 7008 only

50+mph 7108 E-Revo VXL

50+mph 7008 Slash VXL 4WD

Not suitable for stock models

50+mph

Pinion Installation Instructions

1. Remove the motor as described on page 24.

2. Use the supplied 1.5mm wrench to loosen the pinion’s set screw.
Remove the stock pinion.

TRAXX AS • 23

TUNING ADJUSTMENTS

24 • TR A X X AS

3. Place the high speed pinion gear onto
the motor shaft. Align the set screw hole
with the at side of the shaft.

4. Thread the supplied 1.5mm set screw
into the high speed pinion gear but do
not tighten it yet.

5. Slide the pinion gear down the motor
shaft so the wrench shaft ts into the
notch in the motor mount, as shown.
Tighten the set screw.

To complete the installation, reinstall the motor and set the gear
mesh as described to the right. Make certain the pinion does not
contact the motor mount or motor plate.

50+mph Battery Installation Instructions

1. Install the supplied battery as described on page 13.

2. Install an identical Power Cell Series 1 battery (#2925) sold
separately) in the opposite battery compartment.

3. Plug both batteries into the Y-harness (sold separately). The harness
connects the two packs in series. The two 7.2-volt 6-cell battery
packs will operate as one 14.4-volt 12-cell battery pack.

4. Plug the Y-harness into the speed control.

Precautions

• Make certain both batteries are fully charged before
installing them in your model. Installing a fully charged pack
and a partially discharged pack may lead to overdischarging
and damage to the partially discharged battery.

• Do not mix batteries of different brands, chemistries or
capacities. Only genuine Traxxas batteries are approved for
dual-battery use in this model.

• The high speed dual-battery and gearing conguration
is for high-speed running on smooth surfaces only. Avoid
repetitive hard acceleration to prevent overstressing the
motor, speed control and batteries. Stop running your
model and allow it to cool if the speed control’s thermal
overload protection activates or if the motor temperature
exceeds 200° F. Failure to install the appropriate gearing can
cause failure of the motor, speed control and batteries when
running the model on 12 NiMH cells.

Motor Installation

To access the motor,
remove the gear
cover by removing
the single screw on
the top of the gear
cover. The motor
uses an aluminum
mount for quick,
easy motor access and gearing adjustment.

Motor Mount Positions

To remove the motor, rst open the right
battery door and slide out the ESC. Next,
remove the single large hex screw using
the supplied 2.5mm wrench. Then rotate
the motor and mount to the side of the
model, and slide backward off the post.

The motor mount was carefully
engineered to provide additional
features and adjustability. Two sets of
holes are provided for use with brushed

Brushed Motors

Brushless Motors

and brushless motors. The holes for brushed motors are spaced
16mm apart and accept 2.5mm screws. The holes for brushless
motors are spaced 19mm apart and accept 3mm screws.

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 top gear cover.

To set the gear mesh, cut a narrow strip of
notebook paper and run it into the gear mesh
of the motor. The motor is mounted to an
aluminum motor mount. Loosen the single
motor mount screw with the provided 2.5mm
wrench to slide the motor mount. Slide the
motor and pinion gear into the spur gear.

Motor Mount

Screw

Retighten the motor mount screw and then
remove the strip of paper. You should be able
to run a fresh strip of paper through the gears

Do Not Loosen

without binding them.

WHEELS AND TIRES

The Slash VXL 4WD and E-Revo VXL use 12mm axle hexes which
allow many types of aftermarket tires and wheels to be adapted
for use on your model. Most will affect the overall width and the
suspension geometry of the model. The offsets and dimensions
designed into the model’s wheels are intentional; therefore,
Traxxas cannot recommend the use of other non-Traxxas wheels
with different specications. Experimentation with different types
of tires is recommended to see which ones work the best on the
terrain where the model is run. Soft compound tires with many
short spikes generally work better on hard, dry surfaces. In loose
dirt, a tire with large spikes should perform better. Foam tires can
be tted for use on pavement or indoor carpet tracks. See your
parts list for accessory wheels and tires.

When selecting tires, consider the overall diameter of the tire.
If the overall diameter is signicantly larger than the stock tire’s
diameter, you will need to use a smaller pinion gear to compensate
for the larger tire. If you wish to install tires with a diameter greater
than 4 inches or 100mm, Traxxas suggests you congure the
transmission for ‘underdrive’ gearing. Details on making this simple
modication are available at Traxxas.com.

TRAXX AS • 25

MAINTAINING YOUR MODEL

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

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

very seriously.

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

10. Check the tightness of the slipper clutch.

11. Check the tightness of the front pivot balls.

Other periodic maintenance:

Slipper clutch pad (friction material):

Under normal use, the
friction material in the
slipper clutch should
wear very slowly. If
the slipper clutch fails
to provide consistent
performance or slips even
when the adjustment nut is fully
tightened, disassemble the slipper
clutch and replace the slipper pad. Inspect
the spur gear and pressure plate for wear or
damage and replace if necessary.

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 #5462.

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.

Driveline: Inspect the driveline for signs of wear such as worn

drive yokes, dirty axle half shafts, and any unusual noise or
binding. Remove the gear cover and Inspect the spur gear for
wear and check the tightness of 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.

Keep this manual and the other documents included with your
model for future reference. If you misplace your manual or any of
the documents, they may be downloaded at Traxxas.com.

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.

26 • TR A X X AS

11

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

Periodically inspect the chassis for damage.

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

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

NOTES

TRAXX AS • 27

BRUSHLESS

090401 KC1181

MODEL 7008

MODEL 7108

owner’s manual

1100 Klein Road, Plano Texas 75074

1-888-TRAXXAS