Traxxas Summit 5607 Owner's Manual

MODEL 5607

owner’s manual

2 • SUMMIT

3 BEFORE YOU

PROCEED

4 SAFETY

PRECAUTIONS

5 TOOLS, SUPPLIES,

AND REQUIRED

EQUIPMENT

6 ANATOMY OF

THE SUMMIT

7 QUICK START:

GETTING UP

TO SPEED

8 TRAXXAS TQ 2.4GHz

RADIO SYSTEM

16 ADJUSTING THE

ELECTRONIC SPEED

CONTROL

18 DRIVING YOUR MODEL

21 TUNING

ADJUSTMENTS

27 MAINTAINING

YOUR MODEL

28 TQ 2.4GHz ADVANCED

TUNING GUIDE

introduction

Thank you for purchasing the new Traxxas Summit electric monster
truck. The Summit is the most advanced electric monster truck
ever created, with multi-terrain capabilities that far exceed those of
any other monster truck. Designed from the start to optimize the
advantages of electric power, Summit builds on the success and
innovation of the E-Revo racing monster truck with the first-ever
remote-locking differentials and transmitter-operated high-low
transmission for total mastery of any terrain without compromising
speed or handling.

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 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 find 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 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 7 to begin.

SUMMIT • 3

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.

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 Standard Time. Technical assistance is also
available at Traxxas.com. You may also e-mail customer support
with your questions at [email protected]. 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
1100 Klein Road
Plano, Texas 75074
Phone: [phone]
Toll-free 1-888-TRAXXAS

Internet
Traxxas.com
E-mail: [email protected]

Entire contents ©2011 Traxxas.
Traxxas, Ready-To-Race, TQ, Titan,
Summit and EVX-2 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.

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

4 • SUMMIT

This model is not intended
for use by children under
14 years of age without the
supervision of a responsible
and knowledgeable adult.

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

safety precautions

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

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

1

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 motors, 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 your battery packs and your
charger. It is your responsibility to
charge and care for your battery
packs properly. In addition to your
battery and charger instructions,
here are some more tips to keep
in mind.

• Never leave batteries
to charge unattended.

• Remove the batteries from the model while charging.

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

• Allow the battery packs 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.

• Only use approved chargers for NiMH battery packs (such as the Traxxas
EZ-Peak

™

Charger, Part #2930). Do not exceed the maximum charge rate

of 4 amps.

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

• 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 battery when it
has reached the end of its useful life. Do not throw your battery in the trash.
All Power Cell 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.

SPEED CONTROL

• Disconnect the Batteries: Always disconnect the batteries 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.

• 6 to 14-cells Only: Always adhere to the minimum and maximum
limitations of the EVX-2 as stated in the specifications table. Do not mix
battery types and capacities. Use the same voltage and capacity for both
batteries. Using mismatched battery packs could damage the batteries
and electronic speed control.

• 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 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

• Always Use Heat Sinks: Three heat sinks are factory-installed on the speed
control and must be used for maximum cooling and performance.

• 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.

• Do Not Let the Transistor Tabs Touch: Never allow the three separate
transistor banks to touch each other or any exposed metal. This will create
a short circuit and damage the speed control. (For example, laying a metal
tool across the heat sinks can damage the speed control.)

• No Schottky Diodes: External Schottky diodes are not compatible with
reversing speed controls. Using a Schottky diode with the EVX-2 will
damage the ESC and void the 30-day warranty.

1500

3600

Do not mix battery
capacities. Use two

batteries with the

same capacity.

1500

3600

Do not use a 6-cell

7.2V battery in

combination with

a 7-cell battery

8.4V pack.

SUMMIT • 5

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.

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

For more information on
batteries, see Use the Right
Batteries on page 11.

SUPPLIED TOOLS AND EQUIPMENT

Universal

wrench

2.0mm “T” wrench 2.5mm “T” wrench

Shock wrench 5mm turnbuckle wrench

Suspension multi-tool

3.0mm “L” wrench

Antenna nut wrench

Body clips Battery Retainers

17mm wheel

wrench

4-way wrench

Warning: Lithium Polymer (LiPo) batteries should not be used with the EVX-2. The EVX-2 electronic speed control is not equipped with low-voltage detection.

4 AA alkaline

batteries

Required Equipment

(sold separately)

NiMH battery charger

(TRX EZ-Peak™ shown, Part #2930)

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

Two 7-cell NiMH battery packs with

Traxxas High-Current Connectors*

Toe Link
(Turnbuckle)

6 • SUMMIT

anatomy of the summit

Rear Half
Shaft

Transmission

Chassis

Transmission Shifting Servo

Rear T-Lock

Servo

Front T-Lock Servo

Antenna Mount

Light Pipe

Front

Suspension

Arm

Front

Bumper

Rear
Bumper

Oil Shock
(Damper)

Rear Body
Mount

Hex Hub

Rear Suspension
Arm

Axle Carrier

Pivot Ball

Toe Link

(Turnbuckle)

Receiver Box

Skid Plate

Steering Servo

Steering Servo

Front Body

Mount

Battery Compartment

Door

Battery
Compartment
Vent

Electronic Speed

Control (EVX-2)

Motor (Titan 775)

Battery Door Release Tab

Slipper Clutch

Rocker

Rocker

Push Rod

Push Rod

Spring Pre-load

Adjuster

Traxxas
High-Current
Connector

SUMMIT • 7

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 8. Detail your model • See page 8

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

Apply other decals if desired.

2. Charge the battery packs • See sidebar, page 12 9. Drive your model • See page 18

Fully charge the two included battery packs. Charge your batteries
now so it will be ready when you finish the other setup procedures.

Driving tips and adjustments for your model.

3. Install batteries in the transmitter • See page 11 10. Maintaining your model • See page 27

The transmitter requires 4 AA alkaline or rechargeable batteries. Follow these critical steps to maintain the performance

of your model and keep it in excellent running condition.

4. Install battery packs in the model • See page 11

Your model requires two fully charged battery packs (included).

5. Turn on the radio system • See page 13

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

6. Check servo operation • See page 14

Make sure the steering servos are working correctly.

7. Range test the radio system • See page 14

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

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.

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

8 • SUMMIT

TRAXXAS TQ 2.4GHz RADIO SYSTEM

Applying the Decals

The main decals for your
model have been applied at
the factory. The 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.

INTRODUCTION

Your model includes the latest Traxxas TQ 2.4GHz transmitter.
The transmitter’s easy-to-use design provides instant driving fun
for new R/C enthusiasts, and also offers a full compliment of pro­level 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 28) and Menu Tree (page 30) included
in this manual will help you understand and operate the advanced
functions of the new TQ 2.4GHz 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 28.

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.

Current - Current is a measure of power flow through the

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.

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

the electronic motor control inside the model. The EVX-2 uses
MOSFET power transistors 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.

Frequency band - The radio frequency used by the transmitter to

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

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.

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 flow of current through it. When
flow is constricted, energy is converted to heat and is lost.

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

mechanism.

8

SUMMIT • 9

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

are used in the ESC to 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.

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 TQ 2.4GHz system
automatically selects and locks onto an open frequency, and offers
superior resistance to interference and “glitching.”

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.

550 and 540 - These numbers refer to the size of the motor. 550

motors have armatures that are 30% longer than 540 motors.

IMPORTANT RADIO SYSTEM PRECAUTIONS

For maximum range, always hold the

transmitter so the antenna is in a vertical
position (pointing straight up). The
transmitter’s antenna can be swiveled
and angled to allow for a vertical position
if necessary.

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.

TRAXXAS TQ 2.4GHz RADIO 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

100100

62mm

Minimum

THROTTLE TRIM

100100

00

10 • SUMMIT

16.8V ESC

WATERPROOF

Antenna

to

LED Lights

Motor
(Titan® 775)

Channel 2
EVX-2 Electronic
Speed Control

Channel 1
Steering Servos

Channel 3
Shift Servo

Channel 4 Front
T-Lock Servo

Channel 5
Rear T-Lock
Servo

TRAXXAS TQ 2.4GHz RADIO SYSTEM

Your model is equipped with the newest Traxxas 2.4 GHz
transmitter. The transmitter has four channels for controlling
your throttle, steering, shift and differential locking. The receiver
inside the model has 5 output channels. Your model is equipped
with five servos and an electronic speed control.

MODEL WIRING DIAGRAM

TQ 2.4GHZ TRANSMITTER

Antenna

Steering
Trim

Multi-Function Knob

Throttle
Trigger

Throttle Neutral

Adjust

Steering Wheel

Power
Switch

Battery
Compartment

Set Button

Menu Button

Red/Green Status LED

see page 29 for more info

16.8V ES C

WATERPROOF

To Motor

LED

EZ-Set Button

Heat Sinks

EVX-2 ELECTRONIC SPEED CONTROL

High-Current

Battery Connector

EVX-2 Wiring Diagram

High/Low Gear
Transmission Shift

T-Lock
Switch

SUMMIT • 11

TRAXXAS TQ 2.4GHz RADIO SYSTEM

INSTALLING TRANSMITTER BATTERIES

Your TQ 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 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 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 or freshly charged 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 29 for more
information on the transmitter Status LED codes.

INSTALLING BATTERY PACKS

The Summit requires two fully charged NiMH battery packs. These
batteries are included with the model.

Using Different Battery Configurations

The battery compartments in the Summit are adjustable to
accommodate a large variety of battery packs. From the factory, the
battery compartments are configured to accept the included 7-cell
NiMH stick packs.

The Summit battery compartments have three key features for
keeping your batteries secure:

1. A foam rubber cushion

2. A spring clip. This is removable for use with taller batteries.

3. A battery retainer tab. This is adjustable to fit a variety of battery sizes.

We recommend using this combination for all NiMH batteries. Make
sure to adjust the battery retainer tab to keep your battery pack snug
against the foam rubber cushion. This does not need to be very
tight. It only needs to prevent the battery from moving excessively
during use.

Battery Installation

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

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

3. Make sure the battery is snug in the compartment. If not, remove
battery and make
adjustment to the
battery retainer tab.

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

THROTTLE TRIM

100100

00

If the power indicator doesn’t
light green, check the polarity
of the batteries. Check
rechargeable batteries for
a full charge. If you see any
other flashing signal from the
LED, refer to the chart on page
29 to identify the code.

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 first sign of
weak batteries (flashing red
light) to avoid losing control.

3, 4

Foam

Cushion

Retainer

Tab

Spring

Clip

Battery Wire Slot

7-cell Battery Orientation

*Always keep your Quick Reference Guide in your transmitter.

12 • SUMMIT

TRAXXAS TQ 2.4GHz RADIO SYSTEM

5. 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 packs to the EVX-2 at this time. Note: always
unplug the batteries and remove from the model after use.

6-cell battery packs:
Swap the battery
retainer tabs from the
left and right battery
compartments. This
will provide additional
adjustment needed to
keep the 6-cell battery packs snug against the foam rubber cushions.

Adjusting Battery Position

The best handling and performance is achieved when the batteries
are positioned to the front of the battery compartment (against the
foam rubber cushion). However, you can reposition the batteries to
change the weight distribution and handling if desired. The Summit
includes an extra set
of battery retainer tabs
that can be used in the
front of the battery
compartment to move
the batteries toward the
rear of the truck.

When using the battery
retainer tabs in the front of the battery compartment, use two
3x10 countersunk cap screws to retain each battery retainer tab.

Do not use the battery retainer tabs in the front of the battery
compartments when using LiPo batteries that are not in a hard
plastic case (The EVX-2 is not compatible with LiPo batteries, see

information below about using LiPo batteries).

Using LiPo Battery Packs in your Summit

Warning: The EVX-2 electronic speed control is not directly

compatible with LiPo batteries. The EVX-2 electronic speed control
is not equipped with low-voltage detection.

For LiPo use, the

EVX-2 power system requires an external low voltage detector for
each battery pack (sold separately, consult your hobby dealer). If
you are using an aftermarket electronic speed control, consult the
manufacturer’s instructions for information about LiPo compatibility.

The battery compartments can be reconfigured to accept many sizes
of LiPo batteries. If you are using batteries that are very thick, the
spring clip may need to be removed from the battery compartment.

Spring Clip Removal

1. Pull down on the inside
of the clip.

2. Push the clip in toward
the center of the model
to release.

Spring Clip Installation

1. Insert the two tabs on
the spring clip into the
rectangular tab slots in
the chassis.

2. Rotate the spring
clip upward.

3. Snap the tabs into place.

Many LiPo batteries do not use a hard plastic case. If using LiPo
batteries that do not have a hard case, always be sure to use the
foam rubber cushion in the front of the battery compartment.

Do not use the battery retainer tabs in the front of the battery
compartments when using LiPo batteries that are not in a hard
plastic case. A hard front impact or crash when driving can damage

the LiPo batteries.

THE TRAXXAS HIGH CURRENT CONNECTOR

Your model is equipped with the Traxxas

High-Current Connector. Standard connectors
restrict current flow and are not capable of
delivering the power needed to maximize the
output of the EVX-2. The Traxxas connector’s
gold-plated terminals with a large contact surfaces ensure positive
current flow with the least amount of resistance. Secure, long­lasting, and easy to grip, the Traxxas connector is engineered to
extract all the power your battery has to give.

Using the Right Charger

The most convenient type
of charger for charging
the included battery packs
is an AC peak-detecting
charger that plugs directly
into an AC wall outlet, such
as the TRX EZ-Peak™ (Part
#2930). It contains special
peak-detection circuitry
that automatically shuts the
charger off when the battery
is fully charged.

For faster charging, the
included battery may be
charged at 4 amps. The TRX
EZ-Peak is a 4 amp charger
and will charge the included
battery in about 45 minutes!

Caution: Never use a
15-minute timed charger
to recharge your model’s
battery packs. Overcharging
may result, causing damage
to the battery packs.

6-cell Battery Orientation

Alternate Rear Position

6-cell Battery Orientation

Retainer Tabs

2

When rechargeable batteries
begin to lose their charge,
they will fade much faster
than alkaline dry cells. 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.

SUMMIT • 13

Always turn your TQ 2.4GHz 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.

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.

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.

TQ 2.4GHz 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.

To change the throttle neutral adjust
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 EVX-2 Setup Programming on
page 16 for instructions.

Steering Trim

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

THROTTLE TRIM

100100

00

THROTTLE TRIM

100100

00

Always turn your

transmitter on first.

Turn on the model.

1

2

Plug in the battery.

3

THROTTLE TRIM

100100

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

TRAXXAS TQ 2.4GHz RADIO SYSTEM

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 #3080
2-Pack Female

Part #3070
2-Pack Male

Part #3061
Male Charge Adapter

Part #3062
Female Charge Adapter

5

THROTTLE TRIM

100100

00

TQ 2.4GHz RADIO SYSTEM CONTROLS

TQ RADIO SYSTEM RULES

14 • SUMMIT

Multi-Function Knob

The Multi-Function knob can be programmed to control
a variety of functions. From the factory, the Multi­Function 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 15.

USING THE TQ 2.4GHz RADIO SYSTEM

The TQ 2.4GHz 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).

2.

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

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 the EVX-2 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 EVX-2 setup and
operation). To turn the EVX-2 off, press the set button until the
green LED turns off. Always disconnect your batteries 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 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 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.

Make sure your transmitter antenna is straight up, 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.

• Higher Speeds Require Greater Distance

The faster you drive your model, 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 model 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.

Your model’s radio system is designed to operate reliably up to

the approximate distance that it is no longer easy or comfortable
to see and control the model. Most drivers will struggle to see
and drive their model at distances farther than a football field
(300+ feet). At greater distances, you could lose sight of your
model and you may also exceed the radio system’s operating
range which will cause the failsafe system to activate. For best
visibility and control of your model keep your model within 200
feet regardless of the maximum range available.

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

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.

TRAXXAS TQ 2.4GHz RADIO SYSTEM

Automatic Fail-Safe

The TQ 2.4GHz transmitter
and receiver are equipped
with an automatic fail­safe 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
failsafe activates while you
are operating your model,
determine the reason for
signal loss and resolve the
problem before operating
your model again.

In order to re-acquire the
signal after the failsafe has
activated, you will need
to walk a longer distance
closer to the model than the
distance the model travelled
out of range. Simply keep
walking towards the model
until you re-acquire the signal.

6, 7

THROTTLE TRIM

100100

00

SUMMIT • 15

TQ 2.4GHz 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 another
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
transmitter on. The transmitter’s LED will flash red slowly.
Release the SET button

2. Press and hold the receiver’s LINK button as you switch on
the speed control (by pressing the EZ-Set button). Release the
LINK 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 TQ 2.4GHz 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
the left 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.

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.

When reinstalling the antenna, first slide
the antenna wire into bottom of antenna
tube until white tip of antenna is at top of
tube under the black cap. Insert the base
of the tube into the antenna post. Take
care not to crimp the antenna wire. Slide
the crimp nut over the antenna tube and
screw it onto the antenna post. Use the
supplied tool to tighten the crimp nut
on the post just until the antenna tube
is securely in place. Do not over tighten
or crush the antenna wire against the
chassis.

Do not bend or kink the antenna
wire! See the side bar for more information.
Do not shorten the antenna tube. The
minimum height is 62mm.

Turning Range
at Transmitter

Effective Turning
Range on Model

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

TRAXXAS TQ 2.4GHz RADIO SYSTEM

Antenna

Tip

Antenna

Tube

Antenna

Wrench

Antenna

Crimp Nut

Antenna

Post

16 • SUMMIT

EVX-2 Specifications

Input voltage:

6 to 14-cells
(7.2 to 16.8 volts DC)

Motor limit:

12-turns (550)

Continuous current:

30A

Peak current :

180A

BEC voltage:

6.0V DC

Transistor type:
MOSFET

Motor/Battery Wiring:

14-gauge

Protection:

Thermal shutdown

EVX-2 Wiring Diagram

The EVX-2 electronic speed control is factory set and should not require
any adjustments. These instructions are provided for your reference.

Transmitter Adjustments for the EVX-2 ESC

Before attempting to program your EVX-2, it is important to make sure
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 for the model type that the transmitter was originally sold with.

1. Turn transmitter off.

2. Hold both MENU and SET.

3. Turn 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.

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 batteries, wait a few seconds, plug the
battery packs in, and start over.

1. Disconnect each of the motor wires between
the EVX-2 and the motor. This is a precaution
to prevent runaway when the speed control is
turned on before it is programmed.

2. Connect two fully charged battery packs to the
EVX-2.

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

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

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

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

7. When the LED turns solid GREEN, programming is
complete. The LED will continuously shine green
indicating the EVX-2 is on and at neutral (D).

EVX-2 Operation

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
fingers 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 EVX-2. If you press and release too quickly, you
may hear the steering servos jump but the LED may not stay
on. (Note: If the throttle is not at neutral or if the throttle trim
has been altered, the LED will turn off after one second and the
wheels may begin to drive.)

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

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 GREEN.

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

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 shine GREEN.

6. To stop, return the throttle trigger to neutral. Note that there is
no programmed delay when changing from reverse to forward.
Use caution to avoid slamming the speed control from reverse
to forward. On high-traction surfaces, this could result in
transmission or driveline damage.

7. To turn the EVX-2 off, press the EZ-Set button until the green LED
turns off.

ADJUSTING THE ELECTRONIC SPEED CONTROL

A

Green then Red

B

Once Red

C

Twice Red

D

Solid Green

SUMMIT • 17

Patent Pending 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.

Thermal Shutdown Protection

The EVX-2 is equipped with thermal shutdown protection to guard
against overheating caused by excessive current flow. If the operating
temperature exceeds safe limits, the EVX-2 will automatically shut
down and the EVX-2 LED will flash red. The LED on the face of the EVX­2 will continuously flash red, even if the throttle trigger is moved back
and forth. After the speed control cools down to a safe level,
the LED will continuously shine green. The EVX-2 will once again
function normally.

EVX-2 Profile Selection

The speed control is factory set to Profile #1. To change the profile,
follow the steps on described 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.

EVX-2 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)

1. Connect two fully charged battery

packs to the EVX-2 and turn on your
transmitter.

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

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

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

Selecting Race Mode (Profile #2)

1. Connect two fully charged battery

packs to the EVX-2 and turn on your
transmitter.

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

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

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

Selecting Training Mode* (Profile #3)

1. Connect two fully charged battery

packs to the EVX-2 and turn on your
transmitter.

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

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

4. The light will then turn green 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.

B

One blink Red

A

Green to Red to Off

D

Solid Green

C

Release

ADJUSTING THE ELECTRONIC SPEED CONTROL

Tip For Fast Mode Changes

The EVX-2 is set to Profile 1
(Sport Mode) as the default.
To quickly change to Profile 3
(Training Mode), with the
transmitter on and the EVX-2
turned off, press and hold
the SET button until the light
blinks red three times and then
release. For full power, turn off
the EVX-2 then 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.

B

Two blinks Red

A

Green to Red to Off

D

Solid Green

C

Release

B

Three blinks Red

A

Green to Red to Off

D

Solid Green

C

Release

*Patent-pending

18 • SUMMIT

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 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 first sign of weak batteries. When the batteries in
the transmitter become weak, the red power light will begin to flash.
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.

Operating the High-Low Transmission

Summit’s High-Low transmission is operated via the red
rocker switch above the transmitter grip; depressing
the upper part of the switch engages Low, depressing
the lower part of the switch engages High. Summit
may be shifted from Low to High while the truck is
moving. However, it is recommended to slow to a
speed appropriate for Low gear (about 5mph) before
shifting from High to Low. This will reduce strain on the
transmission gears. Although Summit’s 775 motor has
ample torque for climbing and crawling in second gear,

using first gear in situations that require low speed will extend motor life.
Limit second-gear use to high-speed running.

Operating the T-Lock Differentials

For most driving, the Summit will perform best with both
differentials unlocked or “open” (T-Lock switch up). This
will give Summit maximum steering performance and
the tightest possible turning radius, and will also reduce
strain on the drive components. If open differentials cause
you to lose traction over loose terrain or when traversing
an obstacle, you can use the T-lock switch to lock the
front differential, or both differentials. To lock the front
differential only, bring the truck and all four wheels to a
complete stop, then move the T-Lock switch to the middle
position. Apply throttle slowly until the T-Lock engages
(it will take just a moment), then use the throttle as needed.
To lock both differentials, come to a complete stop and move the T-Lock
switch to the down position. As with a full-size 4WD vehicle, Summit’s
high-speed handling and steering precision are reduced when one or
both differentials are locked. Locked differentials should only be used for
difficult obstacles that require minimum speed and maximum traction.
High-speed driving with locked differentials is not recommended.

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 3000 mAh battery pack will theoretically
run twice as long as a 1500 mAh 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 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 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 EVX-2 cool.

Get plenty of airflow across the ESC heat sinks.

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

9

SUMMIT • 19

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.

RUNNING IN WET CONDITIONS

Your new Traxxas Summit 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
Summit through puddles, wet grass, snow, and through other wet
conditions. Though highly water resistant, the Summit 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 (note: the
EVX-2 is not LiPo compatible).

The 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 saltwater (ocean
water), brackish water (between fresh water and ocean water), or
other contaminated water. Saltwater 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 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.

Confirm 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.

Confirm that your batteries can be used in wet conditions.

5.

Use Low gear when running in mud, deep puddles, snow or similar
situations that will restrict the tires and put much higher loads on the
motor. Although the Summit’s 775 motor has ample torque in second
gear, using first gear in situations that require low speed will extend
motor life. Limit second-gear use to high-speed running on dry ground.

Motor Precautions

Titan 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 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.

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 flat 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 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, transmission,
differentials, etc.

DRIVING YOUR MODEL

20 • SUMMIT

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 re-grease
the differentials. Refer to your
exploded view diagrams for help with
disassembly and reassembly.

• Transmission: Remove, disassemble,
clean, and re-grease the transmission
components. Use a light coating of
wheel bearing grease (from an auto
parts store) on the metal gear teeth.
No grease is required for the nylon gears. Refer to your exploded
view diagrams for help with disassembly and reassembly.

• Titan motor: Remove the motor, clean with aerosol motor cleaner,
and re-oil the bushings 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. To remove the cover, remove the two 3x10mm button-head cap screws.

2. To remove the receiver from the box simply lift it out and set to the side.
The antenna wire is still inside the clamp area and cannot be removed yet.

3. Remove the wire clamp by removing the two 2.8x8mm cap screws.

4. Unplug the servo cables from the receiver and remove the receiver.

Receiver Installation

1. Always install the wires into the box before installing the receiver.

2. Install the antenna wire and the

servo cables into the receiver box.

3. Arrange the wires neatly using the

wire guides in the receiver box. The
excess wire will be bundled inside
the receiver box. Label which wire is
for which channel.

4. Apply small bead of silicone grease

(Traxxas part #1647) to the wire clamp.

5. Install the wire clamp and tighten the two

2.5x8mm cap screws securely.

6. Install the receiver into the box and plug

the wires into receiver. Refer to page 10
for the wiring diagram.

7. Make sure the clear plastic light pipe in

the receiver box is aligned above the
LED on the receiver.

8. 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 in any way.

9. Install the cover and tighten the two 3x10mm button-head cap

screws securely.

10. Inspect the cover to make sure that the o-ring seal is not visible.

DRIVING YOUR MODEL

SUMMIT • 21

Summit does not require any specialized knowledge or understanding
of its unique suspension and drivetrain to perform typical, everyday
setup and tuning adjustments. Adjustment procedures for alignment,
spring rate, damping, steering and ride height are covered here.

SUSPENSION TUNING

Springs

Summit’s springs have
been carefully selected
to provide the best
combination of roll
stiffness and bump­absorbing ability. If you
wish to install softer or
stiffer springs, Traxxas
offers optional tuning
springs. Higher rate
springs are stiffer, and
can be used to reduce
sag, body lean, and brake
dive for a more responsive handling feel. Lower rate springs are softer,
and will increase traction and suspension articulation when traversing
difficult terrain. Refer to your parts list for a complete part number
listing. Springs are identified by dots of color on their ends.

Optional springs available from
Traxxas are listed to the right.
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.

Ride Height Adjustment

Summit’s ride height can be finely tuned by adjusting suspension sag
via the pre-load adjusters on the shock bodies. Thread the pre-load
adjuster down the shock body to raise Summit’s ride height, or thread
the adjuster up the shock body to lower ride height. If threading the
pre-load adjusters to the maximum ride height position still allows more
suspension sag than you prefer, stiffer springs should be installed.

Adjusting the Pivot Ball Caps

The pivot ball caps should be adjusted so
that the pivot balls operate freely in the
axle carriers with no excess play. Use the
provided four-way suspension multi-tool to
tighten or loosen the pivot ball cap.

Rockers
(Progressive Rate/ Suspension Travel)

One of the most exciting aspects of Summit’s suspension is the inboard
shock (damper) arrangement that uses pivoting rockers to translate
vertical wheel travel into linear shock motion. The rockers can be
changed to increase or decrease the maximum wheel travel and also to
change the progressive rate of the suspension.

The progressive rate determines how much the force at the wheel
produced by the springs being compressed (wheel force) will vary with
suspension travel (or vertical travel of the wheel). On a progressive
suspension arrangement, the wheel force will increase at a faster and
faster rate as the suspension is compressed. It feels as though the shock
spring gets progressively stiffer the more you compress the suspension.
On a linear suspension arrangement, the wheel force increases linearly as
the suspension is compressed. The spring does not feel any stiffer, even
when the suspension is fully compressed. This provides a very “plush”
feeling suspension with seemingly bottomless suspension travel.

A total of three different rocker arm sets are available for Summit. All
will allow the wheel to travel a total of 90mm in the vertical direction.
From the ride height position, the wheel will be able to travel 60mm in
the upward direction (bump), and 30mm in the downward direction
(droop). Summit is equipped with the long-travel rocker arms for
120mm of total travel. The progressive rate can be increased or

120mm Travel

Dot Color Spring Rate

Double Yellow 28.0 lb/in (4.9 N/mm)

(Standard Rear)

Double Orange 30.8 lb/in (5.4 N/mm)

(Standard Front)

Blue 33.7 lb/in (5.9 N/mm)
Purple 36.5 lb/in (6.4 N/mm)

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

Important: The shocks are
assembled at the factory
with a center-to-center
distance (between the rod
end balls) of 87mm. Any time
the shocks are removed and
disassembled, this distance
should be checked to ensure
proper operation of the
suspension.

87mm

Rocker Arm Total Travel Progressive Rate

Progressive 1

90mm

(60mm up / 30mm down)

Low

Progressive 2

90mm

(60mm up / 30mm down)

Medium

Progressive 3

90mm

(60mm up / 30mm down)

High

Long Travel

(stock)

120mm

(80mm up / 40mm down)

Low

22 • SUMMIT

TUNING ADJUSTMENTS

All of the toe links are installed
on the truck so that 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.

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

decreased by installing different rocker arm sets. The rockers are labeled
Progressive 1 to Progressive 3. Progressive 1 rockers will provide a low
progressive rate that maintains consistent damping force across the
whole range of suspension travel. Progressive 2 rockers provide a larger
degree of rate change, and Progressive 3 rockers have the greatest rate
difference. Progressive 3 rockers will improve high-speed cornering on
smooth surfaces by providing a firmer feel. Remember that Progressive
1, 2 and 3 rockers all provide 90mm of travel, 30mm less than the
Summit’s stock 120mm long-travel rockers. This may improve road
handling, but will reduce suspension articulation in rough terrain. Body
roll, brake dive and rear squat will also be reduced. Always change all
four rockers as a complete set. Do not mix rates and travel.

When using the Progressive 1, 2 or 3 rockers, Traxxas #5439 springs
(3.8 rate gold) provide a good starting point for suspension tuning.

The chart below demonstrates the effect of the various rocker arms on
wheel force as the suspension is compressed. On the progressive rate,
wheel force is light at first and increases as the suspension is compressed.

SHOCK TUNING

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 SAE­50W silicone 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 using
the shock wrench and the suspension
multi tool

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.

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

Shock Pistons

The shock pistons can be replaced with the available optional pistons to
vary the amount of damping. Optional pistons with bypass holes that
are larger or smaller (1, 2, or 3) than the factory installed stock pistons
can be used to decrease or increase damping respectively. Change the
pistons if you only have one weight of shock oil available to you. From
the factory, Summit is equipped with #2 pistons in the front and #2
pistons in the rear.

Constant Rate Travel

Wheel Travel

Wheel Force

0

2

4

6

8

10

12

14

16

18

20

10 20 30 40 50 60 70 80 90

Progressive Rate Travel

A. Tighten/Loosen Upper Cap

C. Remove/Install Rod End

B. Tighten/Loosen Lower Cap

Multi-tool Shock Functions

SUMMIT • 23

Shock disassembly

The shocks must be removed from the vehicle and disassembled to
change the 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 (A) and empty the shock body of shock oil.

3. Remove the lower cap (B) and the X-ring from the shock body.

4. Use side cutters to grip the shock shaft just above the rod end (C).

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.

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.

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

piston bottoms out.

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

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. Slide the bump stop onto the shaft.

8. Grip the shaft close to the threads with needle nose pliers or side

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

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

shock body. 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.

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

the shock body with the suspension multi tool (A). 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
shock body while tightening.

11. Reinstall the spring and lower retainer.

ALIGNMENT SETTINGS

The alignment settings are critical for
optimizing the performance of Summit.
Adjust your alignment as carefully and
precisely as you possibly can.

Toe Adjustment

The wheels can be adjusted to point
straight ahead or have a toe-in or toe­out setting. To help you remember,
look down at your feet. For toe-in, your
feet point towards each other. For
toe-out, your feet point away from
each other. The toe angle of the
front wheels can be adjusted by
varying the length of the toe links
that connect the steering linkage to
the front axle carriers. The toe angle
of the rear wheels can be adjusted
by varying the length of the metal
toe links that connect the rear
bulkheads to the rear axle carriers.
The front toe links and rear toe
links are equipped with turnbuckles. The lengths of the toe links can be
adjusted by turning them with the included 5mm Traxxas wrench.

Toe Base Factory Settings
Front: 0-degrees
Rear: 1-degree toe-in each side

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. The pivot balls are protected by blue dust plugs. To adjust your
static camber, insert the supplied 2.5 mm hex wrench through the slit
in the dust plug and engage the end of the pivot ball (compressing the
suspension until the arms are parallel to the ground will allow for easier

TUNING ADJUSTMENTS

Left Hand

Threads

Right Hand

(Normal) Threads

Decrease

Length

Increase

Length

2

2

2

1

1

1

3

3

3

Shock Piston Hole Sizes

Piston 1: 1.10 mm

Piston 2: 1.00 mm

Piston 3: 0.95 mm

Never slide the threads on
the shock rod past the X-ring
seal when it is installed and
compressed by the bottom
cap of the shock. Doing so will
damage the seal and cause
shock oil to leak.

Piston Installation/Removal

24 • SUMMIT

hex wrench engagement). The upper pivot ball is normally screwed
all the way in. Negative camber is achieved by screwing the pivot ball
of the lower control arm out. Note: When camber is changed, the toe
angle of the wheel has to be reset.

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

Transmission Tuning

Adjusting the Slipper Clutch

The Summit is equipped with
an adjustable Torque Control
slipper clutch which is built
into the large spur gear. The
purpose of the slipper clutch
is 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.

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 2.0mm 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

When T-Lock is activated, the Summit’s differentials are locked for
maximum traction when climbing or traversing loose terrain. When
T-Lock is deactivated, the Summit’s differentials are “open,” allowing
the left and right wheels to spin at different speeds while turning so the
tires do not scuff or skid. This decreases the truck’s 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 engine 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.
Summit 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 of Summit’s differentials are filled with SAE
100,000W viscosity silicone oil. Only use silicone oil in the differentials.
Traxxas offers SAE 10,000W, 30,000W and 50,000W viscosity oil to tune
the action of the differentials. Lower-viscosity oil allows the differential
to operate more freely. If most of your driving is done at high speed or
on high-traction surfaces, filling the differentials with lower-viscosity
fluid may improve handling. The differentials must be removed from
the vehicle and disassembled to change/replace oil.

WHEELS AND TIRES

Many types of aftermarket tires and wheels can 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 specifications. The diameter of the wheels is an
innovative design, and there is a variety of different tires available
for you to experiment with in addition to the tires included on the

Tighten

Loosen

TUNING ADJUSTMENTS

Use higher viscosity
(thicker) diff oil for:

•

More power to the wheels
with the most traction.

•

Racing on low-traction
smooth surfaces .

•

Better performance for
climbing on uneven terrain.

Using lower viscosity
(thinner) diff oil for:

• More power to the wheels
with least traction.

• Racing on low-traction
rough surfaces.

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 ¼ to ½ turn.

Positive camber

Negative camber

SUMMIT • 25

model (listed in your parts list). Experimentation with different
types of tires is recommended to see which ones work the best on
the terrain where the model is run. When selecting tires, consider
the overall diameter and the rubber compound (hard or soft). If
the overall diameter of the tire is significantly increased, you will
need to use a smaller pinion gear to compensate for the larger tire.
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. See your parts list for accessory wheels and tires.

MOTORS AND GEARING

The Summit’s Titan™ 775 Motor has been carefully designed to
match the needs of the Summit. The Titan is made to run efficiently
at high voltage to provide more torque and longer run times. We
do not recommend converting the Summit to a typical low voltage
setup using traditional 540 size motors. While these components
will physically fit into the Summit, the system will not run as
efficiently, losing power in the form of motor and battery heating.
The result will be shorter run times, high current draw, and extreme
battery and motor temperatures.

The Summit is equipped from the factory with a 68-tooth spur gear
and 14-tooth pinion gear. Summit has a large range of gearing
making it suitable for many different types of applications and
environments. If you want more acceleration and less top speed,
use a smaller pinion gear (fewer teeth, higher numerical ratio). The
overall reduction is the number of turns the motor makes for one
revolution of the tire. Higher numerical ratios provide more torque,
lower numerical ratios provide more top speed. With the Titan 775

motor, do not use a pinion gear larger than 14-tooth with the
stock 68-tooth spur gear. Use the following formula to calculate

the overall ratio for combinations not listed on the gear chart:

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 3mm wrench to slide the motor
mount. Slide the motor and pinion gear
into the spur gear. 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 without
binding them.

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.
To remove the motor, remove the single
large hex screw using the supplied 3mm
wrench. Then rotate the motor and
mount to the side of the model, and slide backward off the post.

In addition to the 4mm holes used to mount the Summit’s Titan
775 motor, the motor plate has additional holes that accept
standard 540 motors (or other motors that use 3mm screws
and 25mm mounting hole spacing). There are two sets of holes
provided for 540 motors. They are:

1. Low CG (center of gravity) installation (mounts the motor low to the
chassis for best handling performance)

2. High CG installation (mounts motor higher for more clearance for
larger motors or aftermarket heat sinks)

TUNING ADJUSTMENTS

To find High Gear :

# Spur Gear Teeth

x 5.22 =

Final

Gear Ratio

# Pinion Gear Teeth

To find Low Gear :

# Spur Gear Teeth

x 14.45 =

Final

Gear Ratio

# Pinion Gear Teeth

Gearing Compatibility Chart:

The chart below shows a full range
of gear combinations. This does NOT
imply that these gear combinations
should be used. Over-gearing
(bigger pinions, smaller spurs) can
overheat and damage the motor
and/or speed control.

Stock factory gearing

For two 6-or 7-cell
NiMH batteries

Not recommended

Spur Gear

Pinion Gear

62 65 68

12

26.96 28.26 29.57

13

24.89 26.09 27.29

14

23.11 24.23 25.34

15

21.57 22.61 23.65

16

20.22 21.20 22.18

17

19.03 19.95 20.87

18

17.97 18.84 19.71

Spur Gear

Pinion Gear

62 65 68

12

74.66 78.27 81.88

13

68.91 72.25 75.58

14

63.99 67.09 70.18

15

59.73 62.62 65.51

16

55.99 58.70 61.41

17

52.70 55.25 57.80

18

49.77 52.18 54.59

Motor Mount

Screw

Do Not Loosen

High Gear

Low Gear

26 • SUMMIT

DUAL SERVO STEERING SYSTEM

Summit uses dual-servo steering and a single heavy-duty servo saver for
powerful, responsive steering. To prevent unnecessary receiver battery
drain it is important to make sure that the servos are “at rest” when the
steering is at neutral. If one servo is out of adjustment, then both servos
will work against each other, fighting to find center.

Adjusting The Steering System

1. Remove the servo horns and steering links from the servos.

Disconnect the steering links from the servo saver.

2. Adjust both the steering links
to be the exact same length
(31.7mm - use “Steering Link
Length Template” to
set length).

3. Switch on the power to the
receiver and the transmitter.

4. Adjust the steering trim on the transmitter to the neutral “0” position.

5. Connect one end of a steering link to the steering

servo saver arm and the other end to the servo horn.

6. Position the steering servo saver arm
perpendicular to the centerline of the vehicle.

7. While holding the steering servo saver
arm in the position mentioned in step
6, install the servo horn onto the servo
such that the steering link is parallel
with the centerline of the vehicle. This
will automatically set the servo horn at
the 7-degree offset shown in
the illustration.

8. Install the second servo horn on the other
side following the same procedure.

If necessary, fine-tune the length of the second steering link to
eliminate any load on the steering system in the neutral position. If you
are using aftermarket servos, it is important to use servo horns designed
for Summit. Optional steering servo horns are sold separately for use
with non-Traxxas servos.

T-LOCK SERVO INSTALLATION

The Summit’s T-Lock differential control servos are installed and pre­set at the factory. If you need to remove the servos or the servo horns
for maintenance or cleaning, carefully note their orientation when you
reinstall them to make certain the T-Lock system operates properly.

Before reinstalling the spring-loaded servo horns, reset the servos’
output shafts to the “diffs open” position.

1. Switch the transmitter and receiver on and plug the T-Lock servos
into their correct positions on the receiver unit (see page 10).

2. Operate the transmitter’s T-Lock switch to make certain both servos
operate properly, then place the switch in the full-up position for
unlocked front and rear diffs (see page 18).

3. Install the servo horns as shown below. Switch the transmitter and
on-board electronics off before completing the installation.

Front Differential T-Lock Servo
Differential Open: Install the spring-loaded

servo horn so the spring slot is parallel to the
linkage and the bellcrank is pushed away from
the servo, as viewed in the photo.

Differential Locked: Switch the transmitter
and receiver on. Move the T-Lock switch to the
middle position to lock the front differential.
Confirm that the servo’s output shaft turns
counter-clockwise to rotate the servo horn
to the position shown, with the spring slot
perpendicular to the linkage and the bellcrank pulled toward the servo.

Rear Differential T-Lock Servo
Differential Open: Install the spring-loaded servo

horn so the spring slot is parallel to the linkage
and the bellcrank is pulled toward the servo, as
viewed in the photo.

Differential Locked: Switch the transmitter and
receiver on. Move the T-Lock switch to the bottom
position to lock the rear differential. Confirm that
the servo’s output shaft turns counter-clockwise
to rotate the servo horn to the position shown,
with the spring slot perpendicular to the linkage
and the bellcrank pushed away from the servo.

Steering Link Length Template

31.7mm

TUNING ADJUSTMENTS

Front of

Truck

Open

Open

Locked

Locked

Front of

Truck

Front of

Truck

Front of

Truck

SUMMIT • 27

MAINTAINING YOUR MODEL

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 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.

Motor: Every 10-15 runs, remove, clean, and lubricate the motor.

Use a product such as electric motor cleaning spray to flush dirt
out of the motor. After cleaning, lubricate the bushings at each
end of the motor with a drop of light-weight electric motor oil.

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 #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 screw in the pinion gear.
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 batteries 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.

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

10

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

1-888-TRAXXAS

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

28 • SUMMIT

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 15). Accessing the programming

menu is done by using the menu and set buttons on the transmitter and
observing signals from the LED. An explanation of the menu structure
follows on page 30. Experiment with the settings and features to see if
they can improve your driving experience.

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 15, 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 Percentage (Dual Rate)

The Multi-Function knob can be set to control the amount (percentage)
of servo travel applied to steering. Turning the Multi-Function knob
fully clockwise will deliver maximum steering throw; turning the knob
counter-clockwise reduces steering throw (note: turning the dial
counter-clockwise 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 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.

Braking Percentage

The Multi-Function knob may also be set to control the amount of brake
travel applied by the servo in a nitro-powered model. Electric models do
not have a servo-operated 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
counter-clockwise 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 for more information.

Steering and Throttle End Points

The TQ 2.4GHz 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 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.

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.

Multiple Settings and the Multi-Function Knob

It is important to note that settings made with the Multi-Function
knob are “overlaid” on top of each other. For example, if you assign the
Multi-Function 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.

Starting Over:

Restoring Factory Defaults

When programming your

2.4GHz transmitter, you may
feel the need to start over
with a clean slate. Follow
these simple steps to restore
the factory settings:

1. Turn transmitter off.

2. Hold both MENU and SET.

3. Turn 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.

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 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 (Multi­Function 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.

TQ 2.4GHz ADVANCED TUNING GUIDE

SUMMIT • 29

TQ 2.4GHz ADVANCED TUNING GUIDE

Failsafe

Your Traxxas radio system is
equipped with a built-in failsafe
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.

In order to re-acquire the signal
after the failsafe has activated,
you will need to walk a longer
distance closer to the model than
the distance the model travelled
out of range. Simply keep walking
towards the model until you re­acquire the signal.

LED Color / Pattern Name Notes

Solid green Normal Driving Mode See page 13 for information on how to use your transmitter controls.

Slow red (0.5 sec on / 0.5 sec off) Binding See page 14 for more information on binding.

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

Turn the Multi-Function knob right or left until the LED stops flashing.
See page 28 for more information.

Flashing medium red (0.25 sec on / 0.25 sec off) Low Battery Alarm Put new batteries in the transmitter. See page 11 for more information.

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

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 (ie out of
range, low batteries, damaged antenna).

Programming Patterns

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

Fast green 8 times Menu setting accepted (on SET)

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

LED Color / Pattern Name Notes

Solid green Normal Driving Mode See page 13 for information on how to use your transmitter controls.

Slow red (0.5 sec on / 0.5 sec off) Binding See page 14 for more information on binding.

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

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

x

8

x

8

or

TRANSMITTER LED CODES

RECEIVER LED CODES

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

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

Press SET to select an option.

Enter Programming

Press and hold
MENU for 3 seconds

Steering Sensitivity (Expo)

One Blink Red

1

Electric

One Blink Red

1

Servo Reversing

One Blink Red

1

Multi-Function Knob

One Blink Green

1

Channel Setup

Two Blinks Green

2

Mode Selection

Three Blinks Green

3

Steering (Channel 1)

One Blink Green

1

Throttle (Channel 2)

Two Blinks Green

2

Shift (Channel 3)

Three Blinks Green

3

Front T-Lock (Channel 4)

Four Blinks Green

4

Rear T-Lock (Channel 5)

Five Blinks Green

5

Throttle Sensitivity (Expo)

Two Blinks Red

2

Nitro

Two Blinks Red

2

Sub Trim

Two Blinks Red

2

Steering % (Dual Rate)

Three Blinks Red

3

End Points

Three Blinks Red

3

Braking %

Four Blinks Red

4

Reset End Points

Four Blinks Red

4

Throttle Trim

Five Blinks Red

5

Knob Disabled

Six Blinks Red

6

Press

MENU

Press

MENU

Press

MENU

Press

MENU

Press

SET

Press

SET

Press

SET

Press

SET

Press

SET

Press

SET

Press SET to reverse
servo direction.

Servo Reversing

One Blink Red

1

Press SET to reverse
servo direction.

Servo Reversing

One Blink Red

1

Press SET to reverse
servo direction.

Press SET to restore
factory default endpoints.

Reset End Points

Four Blinks Red

4

Press SET to restore
factory default endpoints.

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

Sub Trim

Two Blinks Red

2

Use knob to adjust sub­trim. Press SET to save.

Use steering wheel to
adjust. Turn right to desired

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

30 • SUMMIT

TQ 2.4GHz ADVANCED TUNING GUIDE

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

End Points

Three Blinks Red

3

Use trigger to adjust. Pull

back to desired end point,

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

The menu tree below shows how to navigate through
the TQ 2.4GHz 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.

MENU TREE

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

SUMMIT • 31

Set Multi-Function
knob for STEERING
SENSITIVITY (Expo)

Press/hold MENU

green LED blinks

Press SET

red LED blinks

x

8

Press SET to confirm

green LED blinks (x8)

Press/hold MENU

returns to driving mode

Set Multi-Function
knob for THROTTLE
SENSITIVITY (Expo)

Press/hold MENU

green LED blinks

Press SET

red LED blinks

x

2

Press MENU to confirm

red LED blinks (x2)

x

8

Press SET to select

green LED blinks (x8)

Press/hold MENU

returns to driving mode

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

Press/hold MENU

green LED blinks

Press SET

red LED blinks

x

3

Press MENU twice

red LED blinks (x3)

x

8

Press SET to select

green LED blinks (x8)

Press/hold MENU

returns to driving mode

Set Multi-Function
knob for BRAKING
PERCENTAGE (%)

Press/hold MENU

green LED blinks

Press SET

red LED blinks

x

4

Press MENU 3 times

red LED blinks (x4)

x

8

Press SET to select

green LED blinks (x8)

Press/hold MENU

returns to driving mode

Set Multi-Function
knob for
THROTTLE TRIM

Press/hold MENU

green LED blinks

Press SET

red LED blinks

x

5

Press MENU 4 times

red LED blinks (x5)

x

8

Press SET to select

green LED blinks (x8)

Press/hold MENU

returns to driving mode

Adjust the Multi-

Function knob until the

LED turns solid green.

To LOCK the
Multi-Function knob

Press/hold MENU

green LED blinks

Press SET

red LED blinks

x

6

Press MENU 5 times

red LED blinks (x6)

x

8

Press SET to lock

green LED blinks (x8)

Press/hold MENU

returns to driving mode

To REVERSE
the direction of
STEERING servo

Press/hold MENU

green LED blinks

x

2

Press MENU

green LED blinks (x2)

Press SET

green LED blinks

Press SET

red LED blinks

x

8

Press SET to reverse

servo direction

Press/hold MENU

returns to driving mode

To set the SUB TRIM
of the STEERING
servo

Press/hold MENU

green LED blinks

x

2

Press MENU

green LED blinks (x2)

Press SET

green LED blinks

Press SET

red LED blinks

x

2

Press MENU

red LED blinks (x2)

THROTTLE TRIM

100100

00

Use Multi-Function
knob to set neutral

x

8

Press SET

to save position

Press/hold MENU

returns to driving mode

To set the END
POINTS of the
STEERING servo

Press/hold MENU

green LED blinks

x

2

Press MENU

green LED blinks (x2)

Press SET

green LED blinks

Press SET

red LED blinks

x

3

Press MENU twice

red LED blinks (x3)

THROTTLE TRIM

100100

Turn steering

wheel to desired max

left and right travel

x

8

Press SET

to save each position

THROTTLE TRIM

100100

Turn steering wheel

to test settings

IF END POINTS

ARE OK:

Press/hold MENU

returns to driving mode

IF END POINTS

NEED TO BE
CHANGED:

Press SET

and repeat steps 6-8

To reset the END
POINTS of STEERING
servo to defaults

Press/hold MENU

green LED blinks

x

2

Press MENU

green LED blinks (x2)

Press SET

green LED blinks

Press SET

red LED blinks

x

4

Press MENU 3 times

red LED blinks (x4)

x

8

Press SET

to reset end points

Press/hold MENU

returns to driving mode

To REVERSE
the direction of
THROTTLE servo

Press/hold MENU

green LED blinks

x

2

Press MENU

green LED blinks (x2)

Press SET

green LED blinks

x

2

Press MENU

green LED blinks (x2)

Press SET

red LED blinks

x

8

Press SET to reverse

servo direction

Press/hold MENU

returns to driving mode

To set the SUB TRIM
of the THROTTLE
servo

Press/hold MENU

green LED blinks

x

2

Press MENU

green LED blinks (x2)

Press SET

green LED blinks

x

2

Press MENU

green LED blinks (x2)

Press SET

red LED blinks

x

2

Press MENU

red LED blinks (x2)

THROTTLE TRIM

100100

00

Use Multi-Function

knob to set neutral

x

8

Press SET

to save position

Press/hold MENU

returns to driving mode

To set the END
POINTS of the
THROTTLE servo

Press/hold MENU

green LED blinks

x

2

Press MENU

green LED blinks (x2)

Press SET

green LED blinks

x

2

Press MENU

green LED blinks (x2)

Press SET

red LED blinks

x

3

Press MENU twice

red LED blinks (x3)

Use throttle

trigger to set desired

max throttle or brake

Press SET to save

Use trigger to test

IF END POINTS

ARE OK:

Press/hold MENU

returns to driving mode

IF END POINTS

NEED TO BE
CHANGED:

Press SET

and repeat steps 7-9

To reset the END
POINTS of THROTTLE
servo to defaults

Press/hold MENU

green LED blinks

x

2

Press MENU

green LED blinks (x2)

Press SET

green LED blinks

x

2

Press MENU

green LED blinks (x2)

Press SET

red LED blinks

x

4

Press MENU 3 times

red LED blinks (x4)

x

8

Press SET

green LED blinks (x8)

Press/hold MENU

returns to driving mode

To REVERSE the
direction of SHIFT
servo

Press/hold MENU

green LED blinks

x

2

Press MENU

green LED blinks (x2)

Press SET

green LED blinks

x

3

Press MENU twice

green LED blinks (x3)

Press SET

red LED blinks

x

8

Press SET to reverse

servo direction

Press/hold MENU

returns to driving mode

MENU TREE FORMULAS

To select functions and make adjustments to the TQ 2.4GHz 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.

THROTTLE TRIM

100100

00

Always turn your

transmitter on first.

1

1100 Klein Road, Plano Texas 75074

1-888-TRAXXAS

110829 KC1254-R02

MODEL 5607

owner’s manual