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 rst-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 condent that you own one of the bestperforming models in the market and that it is backed by a team
of professionals who aim to provide the highest level of factory
support possible. Traxxas models are about experiencing total
performance and satisfaction, not just with your model, but also
with the company that stands behind it.
We know you’re excited about getting your new model on
the road, but it’s very important that you take some time to
read through the Owner’s Manual. This manual contains all the
necessary setup and operating procedures that allow you to unlock
the performance and potential that Traxxas engineers designed
into your model. Even if you are an experienced R/C enthusiast,
it’s important to read and follow the procedures in this manual.
Thank you again for going with Traxxas. We work hard every day
to assure you the highest level of customer satisfaction possible.
We truly want you to enjoy your new model!
Traxxas Support
Traxxas support is with you every step of the
way. Refer to the next page to nd out how to
contact us and what your support options are.
Quick Start
This manual is designed with a Quick
Start path that outlines the necessary
procedures to get your model up
and running in the shortest time possible. If you are an
experienced R/C enthusiast you will nd it helpful and fast.
Be sure and read through the rest of the manual to learn
about important safety, maintenance, and adjustment
procedures. Turn to page 7 to begin.
2 • Summit
Page 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
identied 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 support@Traxxas.com. 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 satised with your new model!
Traxxas
1100 Klein Road
Plano, Texas 75074
Phone: 972-265-8000
Toll-free 1-888-TRAXXAS
*Toll-free support is available to U.S. residents only.
Summit • 3
Page 4
Safety Precautions
bluehighway font
Choose the Model That is Right For You.For individual Models
No previous experience with radio controlled models is required.Models require a minimum of setup, maintenance, or support equipment.
Previous experience with radio controlled models is recommended.Models require a higher level of setup, maintenance, or support equipment.
No previous experience with radio controlled models is required.Model requires a minimum of setup, maintenance, or support equipment.
Previous experience with radio controlled models is recommended.Model requires a higher level of setup, maintenance, or support equipment.
BELOW TEXT HAS BEEN UPDATED on 3-14-07Kent wants maintenance text to be at the END of the paragraph.-- KB
All instructions and
precautions outlined in this
manual should be strictly
followed to ensure safe
operation of your model.
This model is not intended
for use by children under
8 years of age without the
supervision of a responsible
and knowledgeable adult.
Previous experience with
radio controlled models
is recommended. Models
require a higher level of
setup, maintenance, or
support equipment.
1
4 • Summit
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 in
congested areas where its operation can conict with or disrupt
pedestrian or vehicular trafc.
Never, under any circumstances, operate the model in crowds of
people. Your model is very fast and could cause injury if allowed
to collide with anyone.
Because your model is controlled by radio, it is subject to radio
interference from many sources that are beyond your control.
Since radio interference can cause momentary losses of radio
control, always allow a safety margin in all directions around the
model in order to prevent collisions.
The motor, batteries, and speed control can become hot during
use. Be careful to avoid getting burned.
Do not operate your Summit in conditions that limit your line
of sight or impair your ability to see the model. Do not rely on
Summit’s LED lighting system as the only source of illumination
for your driving area if you choose to drive after dark.
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 backs 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).
Do not use battery packs that have been damaged in any way.
Do not use battery packs that have damaged wiring, exposed
wiring, or a damaged connector.
Children should have responsible adult supervision when
charging and handling batteries.
Speed Control
Disconnect the Batteries: Always disconnect the batteries from the
speed control when not in use.
Transmitter on First: Switch on your transmitter rst before
switching on the speed control to prevent runaways and
erratic performance.
Don’t Get Burned: The heat sink can get extremely hot, so be
careful not to touch it until it is cool. Supply adequate airow
for cooling.
Use Stock Connectors: If you decide to change the battery
or motor connectors, only change one battery or motor connector
at a time. This will prevent damage from accidentally mis-wiring
the speed control. Please note that modied 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.
Page 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.
SUPPLIED TOOLS AND EQUIPMENT
Shock wrench5mm turnbuckle wrench
Suspension multi-tool4-way wrench
Antenna nut wrench
For more information on
batteries, see Use the Right Batteries on page 10.
A peak-detecting charger
is recommended for best
performance and longest
battery life. For more
information, see Use the Right Charger on page 12.
Glow plug
wrench
Body clipsBattery Retainers
17mm wheel
wrench
2.0mm “T” wrench2.5mm “T” wrench
3.0mm “L” wrench
Required Tools and Equipment (sold separately)
8 AA alkaline
batteries
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.
Two NiMH battery packs (7.2V 6-cell
or 8.4V 7-cell [recommended])
(peak detecting type recommended - see sidebar)
NiMH battery charger
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
Summit • 5
Page 6
Anatomy of the Summit
Rear Half
Shaft
Toe Link
(Turnbuckle)
Traxxas
High-Current
Connector
Rear Body
Mount
Rear
Bumper
Oil Shock
(Damper)
Rocker
Battery Door Release Tab
Electronic Speed
Control (EVX-2)
Motor (Titan 775)
Front T-Lock Servo
Slipper Clutch
Transmission
Hex Hub
Pivot Ball
Axle Carrier
Toe Link
(Turnbuckle)
Steering Servo
Front
Suspension Arm
Rocker
Skid Plate
Front Bumper
Push Rod
Rear Suspension
Arm
Battery
Compartment
Vent
6 • Traxxas
Chassis
Battery Compartment
Door
Receiver Box
Differential Locking Controller
(inside box)
Antenna Mount
Transmission Shifting Servo
Steering Servo
Front Body
Mount
Push Rod
Spring Pre-load
Adjuster
Rear T-Lock
Servo
Page 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 9. Detail your model • See page 9
For your own safety, understand where carelessness and misuse
could lead to personal injury.
2. Charge the battery packs • See sidebar, page 12 10. Drive your model • See page 18
Fully charge two 7.2 or 8.4-volt battery packs (not included). Charge the batteries now so they will be ready when you finish the other setup procedures.
3. Install the antenna • See page 11 11. Maintaining your model • See page 27
Install the antenna mast in the model.Follow these critical steps to maintain the performance
4. Install batteries in the transmitter • See page 11
The transmitter requires 8 AA alkaline or rechargeable batteries.
5. Install battery packs in the model • See page 12
Your model requires two fully charged 7.2 or 8.4-volt battery packs
(not included).
Apply other decals if desired.
Driving tips and adjustments for your model.
of your model and keep it in excellent running condition.
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.
6. Turn on the radio system • See page 15
Make a habit of turning the transmitter on rst, and off last.
7. Check servo operation • See page 15
Make sure the steering servos are working correctly.
8. Range test the radio system • See page 15
Follow this procedure to make sure your radio system works properly
at a distance and that there is no interference from outside sources.
Look for the Quick Start
logo at the bottom of
Quick Start pages.
Summit • 7
Page 8
The Traxxas TQ-4 Radio System
16.8V ESC
WATERPROOF
Your model is equipped with the Traxxas TQ-4 Radio System. The Traxxas TQ-4 Radio System is a 4-channel system that provides high-power
output up to a quarter mile. As installed in the Summit, the TQ-4 transmitter operates dual steering servos (channel 1), the electronic speed
control (channel 2), transmission shift servo (channel 3) and T-Lock actuator servos (channel 4).
TQ-4 Transmitter
Antenna
Throttle Trim
Steering Trim
High/Low Gear
Transmission Shift
Throttle
Trigger
Throttle Neutral Adjust
Steering Wheel
T-Lock
Switch
Servo
Reversing
Switch
EVX-2 Electronic Speed Control
To Motor
High-Current
Battery Connector
Heat Sinks
LED
EZ-Set Button
EVX-2 Wiring Diagram
8 • Summit
Power Switch
Battery Compartment
Power Indicator
Page 9
16.8V ESC
WATERPROOF
Summit Wiring
Channel 4
Differential Locking
Controller (DLC)
to
LED Lights
Front T-Lock Servo
(DLC output A)
Rear T-Lock Servo
(DLC output B)
Channel 1
Steering Servos
Channel 3
Shift Servo
The Traxxas TQ-4 Radio System
Motor
®
(Titan
775)
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.
Antenna
Receiver
Crystal
Channel 2
EVX-2 Electronic
Speed Control
High-Current
Connector
To apply the decals, place one
end down, hold the other end
up, and gradually smooth the
decal down with your nger
as you go. This will prevent air
bubbles. Placing both ends
of the decal down and then
trying to smooth it out will
result in air pockets.
Look at the photos on the box
for typical decal placement.
9
Summit • 9
Page 10
The Traxxas TQ-4 Radio System
Channel
Frequency
Band
Flag
Color
Traxxas
Part No.
126.995Brown2031
227.045Red2032
327.095Orange2033
427.145Yellow2034
527.195Green2035
627.255Blue2036
Use the Right Batteries
Your transmitter uses AA
batteries. Use new alkaline
batteries, or rechargeable
batteries such as NiCad
or NiMH (Nickel Metal
Hydride) batteries in your
transmitter. Make sure
rechargeable batteries are
fully charged according
to the manufacturer’s
instructions.
If you use rechargeable
batteries in your
transmitter, be aware
that when they begin
to lose their charge, they
lose power more quickly
than regular alkaline
batteries.
Caution: Discontinue
running your model at the
rst sign of weak batteries
(ashing red light) to avoid
losing control.
10 • Summit
Radio System Terminology
Please take a moment to familiarize yourself with these radiosystem terms. They will be used throughout this manual.
BEC (Battery Eliminator Circuit) - The BEC can either be in the
receiver or in the ESC. This circuit allows the receiver and servos
to be powered by the main battery pack in an electric model. This
eliminates the need to carry a separate pack of 4 AA batteries to
power the radio equipment.
Channel - The 27 MHz frequency band is divided into 6 channels
so that up to six models can be operated simultaneously. Each
channel is referred to by its ag color and channel number, as
shown below.
Clearing your frequency - A routine, verbal check to make sure
nobody else in your area is operating on the same channel.
Always clear your frequency by calling out your channel number
before operating your model. Wait or move to another area if
your channel is already being used.
Crystal (X-tal) - The plug-in device that determines which channel
the radio system will operate on. For each channel, there are two
crystals, one for the receiver and one for the transmitter. Of those
two crystals, the one marked with the lower number (.455 MHz
lower) must be inserted into the receiver.
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
efciently 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. All Traxxas RTR models operate on a
27 MHz frequency band.
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.
Servo - Small motor unit in your model that operates the steering
mechanism.
Transmitter - The hand-held radio unit that sends throttle and
steering instructions to your model.
Trim - The ne-tuning adjustment of the neutral position of the
servos, made by adjusting the throttle and steering trim sliders
on the face of the transmitter.
Thermal Shutdown Protection - Temperature sensing electronics
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.
4-channel radio system - The TQ-4 radio system, consisting of the
transmitter, receiver and servos.
775 motor – A motor’s number refers to its size; for example, a 550
is larger than a 540. Summit’s 775 motor is the largest offered in
an electric monster truck.
DLC – Differential Locking Controller. This electronic component
operates the T-Lock system’s servos as commanded by the
T-Lock switch on the transmitter.
Page 11
The Traxxas TQ-4 Radio System
Installing Transmitter Batteries
Your TQ-4 transmitter uses 8 AA batteries (see sidebar, page 10).
The battery compartment is located in the base of the transmitter.
1. Remove the battery compartment door by pressing the tab and
lifting the door up.
2. Install the batteries in the correct orientation as indicated in the
battery compartment.
3. Reinstall the battery door and snap it closed.
4. Turn on the transmitter and check the power indicator for a solid
red light.
If the power indicator light ashes, then the transmitter batteries
areweak,dischargedorpossibly installed incorrectly. Replace with
neworfreshlychargedbatteries. The power indicator light does not
indicate the charge level of the battery pack installed in the model.
Setting up the Antenna
1. Locatetheblackantennawirethat
exits the receiver box.
2. Pull thewirestraightwithyour
ngersandtheninserttheendof
the wireintooneendoftheantenna
tube (theantennatube,tip,crimp
nut andsleevearelocatedinthe
documentsbag).Pushthewireallthe
way through the antenna tube.
3. Insert thebaseofthetubeintothe
antennapost.Takecarenottocrimp
the antenna wire.
4. Slide thecrimpnutovertheantenna
tube andscrewitontotheantenna
post. Usethe supplied tool to tighten
the crimpnutonthepostjustuntil
the antenna tube is securely in place.
Do not over tighten or crush the
antenna wire against the chassis.
5. Fold the topoftheantennawireover
the top of theantennatube.Slide
the antennatipontothetopofthe
antenna tube.Nevercutorshorten
the antennawire.
6. On the transmitter,alwaysfully
extend the telescopingantenna
when runningyourmodel.Makea
habit of holdingthetransmitterso
the antenna points straight up.
Antenna
Tip
Antenna
Tube
Antenna
Wrench
Antenna
Crimp Nut
Antenna
Post
If the power indicator
doesn’t light red, check the
polarity of the batteries.
Check rechargeable
batteries for a full charge.
Spray a little window cleaner
on the antenna wire to make
it easier to push through the
antenna tube.
If there are any kinks in the
black antenna wire, it will
be more difcult to push
through the antenna tube.
Pull the wire straight by
sandwiching it between your
thumb and index nger and
running your ngers along
the length of the wire (with
medium pressure).
Don’t shorten the length of
the antenna wire. Its length
is tuned to the frequency
band; cutting it could
severely shorten the radio
system’s range.
See page 20 for more
information about the
receiver box and maintaining
a watertight seal.
3& 4
Summit • 11
Page 12
The Traxxas TQ-4 Radio System
Use the Right Charger
The most convenient type of charger is an AC peak-detecting charger that plugs directly into an AC wall outlet. It contains special peak-detection circuitry that automatically shuts the charger off when the battery is fully charged.
If you’re using a 15-minute timed charger, always fully discharge the battery pack before each charge. Some high mAh battery packs (1500 mAh or higher) require more than the standard 15 minutes of charge time. If the battery pack is cold after 15 minutes of charging, add another 5 minutes of charge time. Closely monitor the battery pack and stop charging it when it begins to feel warm to the touch. Never leave a battery charging unattended. Always follow charger manufacturer’s instructions.
12 • Summit
2& 5
Installing Battery Packs
TheSummitrequirestwofullycharged7.2or8.4-volt (stick style)
NiMH battery packs. These batteries are not included with the model.For the best performance, use 8.4-volt (7-cell) NiMH battery packs.
Using Different Battery Congurations
ThebatterycompartmentsintheSummitareadjustableto accommodatealargevarietyofbatterypacks.Fromthefactory, the batterycompartmentsareconguredtoacceptmostcommon 7-cell NiMH stick packs.
TheSummitbatterycompartmentshavethreekeyfeaturesfor 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 t a variety of battery sizes.
Foam
Cushion
We recommend using this combination for all NiMH batteries. Makesure to adjust the battery retainer tab to keep your battery pack snugagainstthefoamrubbercushion.Thisdoesnotneedtobevery tight.Itonlyneedstopreventthebatteryfrommovingexcessively during use.
Battery Installation
1.Openthebattery compartment doorby pressing on therelease tabs.
2. Install the batterypack with the battery wires facing the rear of the model.
3.Makesurethebatteryissnuginthecompartment.Ifnot,remove battery and makeadjustment to thebattery retainer tab.
4. Route the batterywirethroughtheslot near the vent.
Spring
Clip
Retainer
Tab
Battery Wire Slot
7-cell Battery Orientation
5.Closethebatterydoor,makingsurenottopinchthebatterywires.Be sure both release tabs are fully engaged with the door. Do notconnect 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:Swapthebattery retainer tabs from theleft and right batterycompartments.This willprovideadditional adjustment needed to
6-cell Battery Orientation
keep the 6-cell battery packs snug against the foam rubber cushions.
Adjusting Battery Position
Thebesthandlingandperformanceisachievedwhenthebatteries arepositionedtothefrontofthebatterycompartment(againstthe foamrubbercushion).However,youcanrepositionthebatteriesto changetheweightdistributionandhandlingifdesired.TheSummit includesanextraset of battery retainer tabs
Retainer Tabs
thatcanbeusedinthe front of the batterycompartmenttomove the batteries toward therear of the truck.
Do not usethebatteryretainertabsinthefrontofthe battery
compartments when using LiPo batteries that are not in a hard
plastic case (The EVX-2isnotcompatiblewith 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.
Page 13
The Traxxas TQ-4 Radio System
The battery compartments can be recongured to accept many sizesofLiPobatteries.Ifyouareusingbatteriesthatareverythick,the spring clip may need to be removed from the battery compartment.
Spring Clip Removal
1.Pulldownontheinside of the clip.
2.Pushtheclipintoward thecenterofthemodel to release.
Spring Clip Installation
1.Insertthetwotabson the spring clip into therectangular tab slots inthe chassis.
2. Rotate the springclip upward.
3. Snap the tabs into place.
ManyLiPobatteriesdonotuseahardplasticcase.IfusingLiPo batteries that do not have a hard case, always be sure to use the
foamrubbercushioninthefrontofthebatterycompartment.
Do notusethebatteryretainertabsinthefrontofthe battery
compartments when using LiPo batteries that are not in a hard
plastic case. A hardfrontimpactorcrashwhen driving can damage
the LiPo batteries.
with Traxxas connectors installed or Traxxas connectors can be
purchased to install on battery packs you already own. See sidebar
for packages available from your hobby dealer.
The typical Molex style connector is inadequate for
use in your model. It creates resistance that becomes
a bottleneck to current ow. If your battery pack
is equipped with a Molex connector, it must be
replaced with a Traxxas High-Current Connector to
mate with the EVX-2 electronic speed control.
Molex
connector
The following Traxxas High
Current Connector packages
are available from your
hobby dealer. When using
adapters, be careful not to
exceed the current rating of
the Molex connector.
Part #3060
Single Male/Female
Part #3061
Male Charge Adapter
Part #3062
Female Charge Adapter
Part #3080
2-Pack Female
Part #3070
2-Pack Male
The Traxxas High Current Connector
Your model is equipped with the Traxxas
High-Current Connector. Standard
connectors restrict current ow and
are not capable of delivering the
power needed to maximize the output
of the EVX-2. The Traxxas connector’s gold-plated terminalswith
a large contact surfaces ensure positive current ow with the
least amount of resistance. Secure, long-lasting, and easy to grip,
the Traxxas connector is engineered to extract all the power your
battery has to give.
To run this model, your batteries must be equipped with Traxxas
High-Current Connectors. Batteries can either be purchased new
Summit • 13
Page 14
The Traxxas TQ-4 Radio System
Don’t push the transmitter
antenna down from the
top. Pull it down from the
bottom, one segment at a
time, to prevent binding and
kinking the antenna mast.
14 • Summit
TQ-4 Radio System Controls
TQ-4 Radio System Adjustments
In addition to the electronic throttle and steering trim controls,
your radio system features throttle neutral adjustment and servo
reversing switches. These are preset at the factory and should
not require further adjustment.
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 equaltravel for both
acceleration and reverse.
70/30: Allows more throttle travel (70%)
and less reversetravel (30%).
Note: If you change throttle travel, you
will need to reprogram the electronic
speed control.
Electronic Throttle Trim
The electronic throttle trim located on the face of the transmitter
adjusts the neutral (center) point of the electronic speed control.
This control has been preset for you at the factory.
Electronic Steering Trim
The electronic steering trim located on the face of the transmitter
adjusts the neutral (center) point of the steering servos when the
servos are at rest. Adjust this control to make the model drive
straight with no steering input at the wheel.
T-Lock switch
This switch controls the T-Lock system. When in the “up” position,
both differentials are unlocked. Move the switch to the middle
position to lock the front differential. To lock both differentials,
move the switch to the “down” position.
High-Low Ratio Selector
The red rocker switch shifts the transmission from Low to High.
Push in the top of the switch to engage Low. Push in the bottom
of the switch to engage High.
Servo Reversing Switches
The servo reversing switches
are located on the front of the
transmitter, next to the on/off
switch. Moving a switch reverses the
direction of the corresponding servo.
Each switch corresponds to a
channel, as shown below. For
example, if you turn the steering
wheel to the right and your wheels
turn left, you would move the
Channel 1 switch to correct the
servo direction. It may be necessary
to adjust the corresponding trim
control after moving a switch.
Channel
Default Setting
1
2
3
4
Diff Locking
Servo
Steering
Throttle
Shifting
Page 15
Channel 1
Brown
Channel 2
Red
Channel 3
Orange
Channel 4
Yellow
Channel 5
Green
Channel 6
Blue
The Traxxas TQ-4 Radio System
TQ-4 Radio System Rules
Each time you prepare to run your model, you
must clear your frequency to be sure no one
else in the area is using the same channel as
you. There are six possible channels, numbered
1 through 6. Each is represented by a color.
Look at the crystal plugged into the back of
your transmitter to determine which channel
your model is assigned to.
Always turn your TQ-4 transmitter on rst and
off last. This procedure will help to prevent your model
from receiving stray signals from another transmitter,
or other source, and running out of control.
Always have the transmitter turned on before plugging in
the batteries.
Always use new or freshly charged batteries for the radio
system. Weak batteries will limit the range of the radio signal
between the receiver andthe transmitter. Loss of the radio
signal can cause you to lose control of your model.
1
Always turn your
transmitter on rst.
2
Plug in the battery.
see TQ Radio System Setup, step 4.
3
Turn on the model.
TQ-4 Radio System Setup
The TQ-4 Radio System was pre-adjusted at the factory. The
adjustment should be checked, before running the model,
in case of movement during shipping. Here’s how:
1. Fully extend the chrome antenna mast on the transmitter and
turn the switch on. The red indicator light on the transmitter
should be solid red (not ashing).
2. Elevate the model so that all four tires are off the ground.
If you are holding the model, grip it rmly by the front and rear
bumpers. Make sure hands and clothing are clear of the wheels
and other moving parts on the model.
3. Plug the battery packs 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 servos. Also, check that
the steering mechanism is not loose or binding. If the steering
operates slowly, check for weak batteries.
6. When looking down at model, the
front wheels should be pointing
straight ahead. If the wheels are
turned slightly to the left or right,
slowly adjust the steering trim
control on the transmitter until
they are pointing straight ahead.
7. Gently apply the throttle trigger to ensure that you have full
forward and reverse operation, and that the motor stop when
the throttle trigger is at neutral.
8. Once adjustments are made, turn off your model, followed by
the hand held transmitter.
Range-Testing the TQ-4 Radio System
Before each running session with your model, you should rangetest your radio system to ensure that it operates properly.
1. Turn on the radio system and check its operation as described
in the previous section.
2. Have a friend hold the model securely by the front and rear
bumpers. Make sure hands and clothing are clear of the wheels
and other moving parts on the model.
3. Make sure your transmitter antenna is fully extended, and then
walk away from the model with the transmitter until you reach
the farthest distance you plan to operate the model.
4. Operate the controls on the transmitter once again to be sure
that the model responds correctly.
5. Do not attempt to operate the model if there is any problem
with the radio system or any external interference with your
radio signal at your location.
Remember, always turn the
TQ-4 transmitter on rst and
off last to avoid damage to
your model.
Your speed control was
adjusted to the radio from
the factory. It is possible
for the throttle trim control
on the transmitter to have
moved during transit
or while handling the
transmitter. If the motor
runs when the model is
switched on, then move the
throttle trim control on the
transmitter until the motor
stops. If anything more
than a slight adjustment of
the throttle trim control is
required, then you should
readjust your speed control.
Refer to the adjustments
section on page 16.
When rechargeable batteries
begin to lose their charge,
they will fade much faster
than alkaline dry cells. Stop
immediately at the rst sign
of weak batteries. Never turn
the transmitter off when the
battery pack is plugged
in. The model could run out
of control.
6-7-8
Summit • 15
Page 16
Adjusting the Electronic Speed Control
EVX-2 Specications
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
16 • Summit
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 TQ-4 transmitter is properly adjusted (set back to the factory
defaults). Otherwise, you may not get the best performance from your
speed control.
The transmitter should be adjusted as follows:
1. Set the throttle neutral switch to the 50/50 setting. This adjusts
the transmitter’s throttle trigger throw to 50% for throttle and
50% for braking and reverse.
2. Set the throttle trim control to the middle “0” setting.
3. Set the Channel 2 servo reversing switch to the left position. Do
not change the position of any of the servo reversing switches
after programming the EVX-2.
4. You are now ready to program your speedcontrol.
Setup Programming (Calibrating your ESC and transmitter)
Read through all of the following programming steps before you
begin. If you get lost during programming or receive unexpected
results, simply unplug the battery, wait a few seconds, plug the battery
back in, and start over.
1. Disconnect each of the motor wires between
A
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.
B
Green then Red
3. Turn on the transmitter (with
the throttle atneutral).
4. Press and holdthe EZ-Set
button (A). The LED will rst
turn green and then red.
Release the EZ-Set button.
Once Red
C
5. When the LEDblinks RED ONCE.
Pull the throttle trigger to the
full throttle position and hold it
there (B).
Twice Red
6. When the LED blinks RED TWICE. Push the
D
throttle trigger to the full reverse and hold it
there (C).
7. When the LED turns solid GREEN, programmingis
complete. The LED will continuously shine green
Solid 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
ngers are clear of the wheels.
1. With the transmitter on, press the EZ-Set button for ½ second,
until the LED shines GREEN, then immediately release the button.
This turns on the 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
(Prole #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.
Page 17
Adjusting the Electronic Speed Control
Thermal Shutdown Protection
The EVX-2 is equipped with thermal shutdown protection to guard
against overheating caused by excessive current ow. If the operating
temperature exceeds safe limits, the EVX-2 will automatically shut
down and the EVX-2 LED will ash red. The LED on the face of the EVX2 will continuously ash 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 Prole Selection
The speed control is factory set to Prole #1. To change the prole,
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 proles are selected by entering
the programming mode.
1. Connect two fully charged battery
packs to the EVX-2 and turn on your
A
B
transmitter.
2. With the EVX-2 off, press and hold
the EZ-Set button until the light
turns solid green, then solid red and
Green to Red to Off
C
One blink Red
D
then begins blinkingred (indicating
the Prole numbers).
3. When the light blinks red once,
release the EZ-Set button.
Release
Solid Green
4. The light will then turn green and the model isready to drive.
Selecting Race Mode (Prole #2)
1. Connect two fully charged battery
packs to the EVX-2 and turn on your
A
B
transmitter.
2. With the EVX-2 off, press and hold
the EZ-Set button until the light
turns solid green, then solid red and
Green to Red to Off
C
Two blinks Red
D
then begins blinkingred (indicating
the Prole numbers).
3. When the light blinks red twice,
release the EZ-Set button.
Release
Solid Green
4. The light will then turngreen and the model is ready to drive.
Selecting Training Mode* (Prole #3)
1. Connect two fully charged battery
packs to the EVX-2 and turn on your
A
B
transmitter.
2. With the EVX-2 off, press and hold
the EZ-Set button until the light
turns solid green, then solid red and
Green to Red to Off
C
Three blinks Red
D
then begins blinkingred (indicating
the Prole numbers).
3. When the light blinks red three
times, release the EZ-Set button.
Release
Solid Green
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.
Patent Pending Training
Mode (Prole #3) reduces
forward and reverse throttle
by 50%. Training Mode
is provided to reduce the
power output allowing
beginning drivers to better
control the model. As driving
skills improve, simply change
to Sport or Race Mode for
full-power operation.
Tip For Fast Mode Changes
The EVX-2 is set to Prole 1
(Sport Mode) as the default.
To quickly change to Prole 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 Prole 1 (Sport
Mode) by pressing and
holding the SET button until
the light blinks red one time
and then releasing.
*Patent-pending
Summit • 17
Page 18
Driving your Model
18 • Summit
10
Now it’s time to have some fun! This section contains instructions on
driving and making adjustments to your model. Before you go on, here
are some important precautions to keep in mind.
Allow the model to cool for a few minutes between runs. This is
particularly important when using high capacity battery packs that
allow extended periods of running. Monitoring temperatures will
extend the lives of the 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 rst sign of weak batteries. When the batteries in
the transmitter become weak, the red power light will begin to ash.
Stop immediately and install new batteries.
Do not drive the model at night, on public streets, or in large crowds
of people.
If the model becomes stuck against an object, do not continue to run
the motor. Remove the obstruction before continuing. Do not push or
pull objects with the model.
Because the model is controlled by radio, it is subject to radio interference
from many sources beyond your control. Since radio interference can
cause momentary losses of control, allow a safety margin of space in all
directions around the model in order to prevent collisions.
Use good, common sense whenever you are driving your model.
Intentionally driving in an abusive and rough manner will only result
in poor performance and broken parts. Take care of your model so
that you can enjoy it for a long time to come.
High performance vehicles produce small vibrations which may loosen
hardware over time. Frequently check wheel nuts and other screws on
your vehicle to ensure that all hardware remains properly tightened.
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 rst 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
difcult 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.
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.
Get plenty of airow across the ESC heat sinks.
Page 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 Traxxas TQ-4 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).
Driving Your Model
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.
Conrm that the RX box o-ring and cover are installed correctly and
secure. Make sure the screws are tight and the blue o-ring is not
visible protruding from the edge of the cover.
4.
Conrm 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 rst 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 at surface. Apply full throttle so the tires spin and
throw the excess water out of the holes you cut into the tires.
2. Remove the 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.
Summit • 19
Page 20
Driving Your Model
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. Toremove the cover, remove the two 3x10mm button-headcap screws.
2. To remove the receiver from the box simply lift it out and set to theside. The antenna wire is still inside the clamp area and cannot beremoved 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 RX box before installing the receiver.
2. Install the antenna wire andthe servo cables into thereceiver box.
3. Arrange the wires neatly usingthewireguidesinthereceiver box. The excess wire will bebundled inside the receiverbox. 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 thewires into receiver. Refer to page 9 for the wiring diagram.
7. Make sure the o-ring isproperly seated into thegroove in the receiver box sothat the cover will not pinch itor damage it in any way.
8. Install the cover and tightenthe two 3x10mm button-headcap screws securely.
9. Inspect the cover to make sure that the o-ring seal is not visible.
20 • Summit
Page 21
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
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.
120mm Travel
Dot ColorSpring Rate
Silver
(Standard Rear)
Pink
(Standard Front)
Blue
Purple
28.0 lb/in (4.9 N/mm)
30.8 lb/in (5.4 N/mm)
33.7 lb/in (5.9 N/mm)
36.5 lb/in (6.4 N/mm)
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.
Rocker ArmTotal TravelProgressive Rate
Progressive 1
Progressive 2
Progressive 3
Long Travel
(stock)
(60mm up / 30mm down)
(60mm up / 30mm down)
(60mm up / 30mm down)
(80mm up / 40mm down)
90mm
90mm
90mm
120mm
Low
Medium
High
Low
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
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
Summit • 21
Page 22
Tuning Adjustments
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 camber gauge (available
at your local hobby shop)
can be a useful tool for
alignment setting.
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.
22 • Summit
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 SAE-50W 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
Multi-tool Shock Functions
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
A. Tighten/Loosen Upper Cap
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
B. Tighten/Loosen Lower Cap
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.
C. Remove/Install Rod End
Page 23
Tuning Adjustments
2
2
2
1
1
1
3
3
3
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
Piston Installation/Removal
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
Right Hand
(Normal) Threads
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.
Left Hand
Threads
Decrease
Length
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
Increase
Length
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.
Summit • 23
Page 24
Tuning Adjustments
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.
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.
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
Positive camber
Negative camber
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
Loosen
rear wheels to prevent tire spin.
When it slips, the slipper clutch makes
a high-pitch, whining noise.
To adjust the slipper clutch, remove the
rubber slipper clutch plug on the transmission cover. The slipper
clutch is integrated into the main spur gear on the transmission.
The slipper clutch is adjusted using the spring-loaded locknut on
the slipper shaft. Use the supplied universal wrench. To tighten or
loosen the slipper nut, insert the 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 counterclockwise to loosen (more slippage).
Tighten
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 specications. 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
Page 25
Tuning Adjustments
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 signicantly 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 efciently
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 t into the Summit, the system will not run as
efciently, 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:
To nd High Gear :
# Spur Gear Teeth
# Pinion Gear Teeth
To nd Low Gear :
# Spur Gear Teeth
# Pinion Gear Teeth
x 5.22 =
x 14.45 =
Final
Gear Ratio
Final
Gear Ratio
Adjusting Gear Mesh
Incorrect gearmesh 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 gearmesh,cutanarrowstripof
notebook paperandrunitintothegear
mesh of the motor.Themotorismounted
to an aluminummotormount.Loosen
the single motormountscrewwiththe
provided 3mmwrenchtoslidethemotor
mount. Slide themotorandpiniongear
into the spur gear.Retightenthemotor
mount screw andthen remove the strip of
Motor Mount
Screw
paper. You shouldbeabletorunafresh
strip of paper through the gears without
Do Not Loosen
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 andgearing adjustment.
To remove the motor, remove the single
large hex screw usingthe 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 usedto 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)
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.
High Gear
Spur Gear
626568
12
26.9628.2629.57
13
24.8926.0927.29
14
23.1124.2325.34
15
Pinion Gear
21.5722.6123.65
16
20.2221.2022.18
17
19.0319.9520.87
18
17.9718.8419.71
Low Gear
Spur Gear
626568
12
74.6678.2781.88
13
68.9172.2575.58
14
63.9967.0970.18
15
Pinion Gear
59.7362.6265.51
16
55.9958.7061.41
17
52.7055.2557.80
18
49.7752.1854.59
Stock factory gearing
For two 6-or 7-cell
NiMH batteries
Not recommended
Summit • 25
Page 26
Tuning Adjustments
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
drainit 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 linksto be the exact same length(31.7mm - use “Steering Link Length Template” toset 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.
Steering Link Length Template
31.7mm
26 • Summit
Page 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.
Motor: Every 10-15 runs, remove, clean, and lubricate the motor.
Use a product such as electric motor cleaning spray to ush 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.
Chassis: Keep the chassis clean of accumulated dirt and grime.
Periodically inspect the chassis for damage.
11
Summit • 27
Page 28
081207 KC1162
owner’s manual
MODEL 5610
1100 Klein Road, Plano Texas 75074
1-888-TRAXXAS
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