Traxxas E-Maxx 3906 Owner's Manual

E-Maxx

Owner’s

Manual

Model

3906

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

Traxxas U.K.
P. O. Box 1128
Winterbourne, Bristol BS17-2SH
England
Phone: [phone]

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

Entire contents ©2002 Traxxas. Traxxas, E-Maxx,
TQ-3, and ProGraphix are trademarks or registered trademarks
of Traxxas Corporation. 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.

020823

2

Introduction

Thank you for purchasing the Traxxas E-Maxx, and congrat­ulations on owning what we believe is the most advanced,most
powerful electric monster truck available.This sophisticated
truck incorporates many special features including 4 wheel
drive, shift on the fly two-speed transmission, twin Titan 550
motors, and the powerful EVX electronic speed control.This
manual contains the instructions you will need to operate, and
maintain your E-Maxx so that you can enjoy it for years to come.

Please read all of the Operating Instructions and Precautions
before attempting to drive the E-Maxx. Even if you are an
experienced R/C enthusiast, continue reading to learn about the
best ways to use E-Maxx’s unique features. Also, please pay
special attention to the mechanical and safety precautions
outlined in the manual to avoid any chance of injury to you or
damage to the truck.

4 Before You Proceed

5 Safety Precautions

6 Tools, Supplies

and Required
Equipment

7 Anatomy of the

E-Maxx

8 Quick Start: Getting

Up to Speed

9 Gluing the Tires

10 Decorating

Your E-Maxx

11 The Traxxas TQ-3

Radio System

21 Driving the E-Maxx

22 Adjusting

Your E-Maxx

28 Maintaining

and Storing
Your E-Maxx

29 Trouble Shooting

Your E-Maxx

30 Index

3

Before You Proceed

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

Before running your E-Maxx, look over this entire manual, and
examine the truck carefully.If for some reason you decide the
E-Maxx is not what you wanted, then do not continue any
further. Your hobby dealer absolutely cannot accept an

E-Maxx for return or exchange after it has been run.

Warnings, helpful hints, and 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 E-Maxx 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 E-Maxx 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 8:30
am to 9:00pm central time. Technical assistance is also available
at www.Traxxas.com.You may also e-mail customer support
with your question at [e-mail] thousands of
Traxxas R/C enthusiasts in our online community at
www.ReadyToRun.org

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, or you can save
shipping and handling costs by purchasing them from your
local hobby dealer.

4

All of us at Traxxas want you to safely enjoy your new E-Maxx.
Operate your E-Maxx sensibly and with care, and it will be
exciting, safe, and fun for you and those around you. Failure to
operate your E-Maxx 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

The truck 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 truck in crowds
of people.The truck is very fast and could cause injury if
allowed to collide with anyone.

Because the truck 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 E-Maxx 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.

▼▼▼ ▼ ▼ ▼

All instructions
and precautions

outlined in this
manual should be strictly
followed to ensure safe
operation of your E-Maxx.

The E-Maxx is not

intended for use

by those under 16
years of age without the
supervision of a
responsible and
knowledgeable adult.

5

Safety Precautions

Tools, Supplies, and Required Equipment

Your E-Maxx 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.

For more info on
batteries, see Use

the Right Batteries

on page 13.

A peak-detecting
charger is

recommended for
best performance and
longest battery life. For
more information, see
Use the Right Charger on
page 14.

7-Cell Operation:

Your E-Maxx can use

(2) 8.4-Volt 7-cell
battery packs. Using 7-cell
batteries will allow the
E-Maxx to achieve 30+ MPH
speeds. The packs must be
specially made to fit the
E-Maxx chassis. Go to
www.Traxxas.com/7cell to
learn how to make 7-cell
battery packs for the
E-Maxx.

8 AA alkaline batteries for the radio system

Two 7.2-volt NiCad battery packs

NiCad battery charger

TR

AXX

AS

1.5mm hex wrench

2.0mm hex wrench

Universal (glow plug) wrench

Turnbuckle wrenches

Batteries

Supplied Tools

Your E-Maxx comes with these specialty metric tools:

Other Required Tools and Supplies

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

Safety glasses

#2 Phillips screwdriver

#1 Phillips screwdriver

Small flat-blade screwdriver (1/8 inch blade)

Hobby knife

6

U-Joint wrench

4-way wrench

Anatomy of the E-Maxx

Receiver

Steering

Servo

Suspension

Arm (upper)

Bumper

(Front)

Bumper

Mount

Skid Plate

(rear)

Cross-brace

Shock

(Oil Damper)

Turnbuckle

Transmission

Bulkhead

Shock
Tow e r

Body

Mount

Spur
Gear

Cover

Chassis

7

Slipper

Clutch

Half Shaft

On/Off
Switch

Antenna

Mount

Shifting

Servo

Battery

Compartment

Battery

Hold-Down

Electronic Speed

Contro l(EVX)

Motor

(Titan)

Differential

The following guide is an overview of the

procedures for getting your E-Maxx running.
Refer to the pages indicated for details on each step.Look for the
Quick Start logo on the bottom corners of Quick Start pages.

1. Charge the battery packs • See sidebar, page 14

The E-Maxx requires two fully charged 7.2-volt
battery packs (not included).

2. Glue the tires • See page 9

Glue the tires to the rims to prevent the rims
from spinning inside the tires.

3. Install the antenna • See page 15

Install the antenna mast in the E-Maxx.

4. Install batteries in the transmitter • See page 13

The TQ-3 transmitter requires 8 AA alkaline batteries.

5. Install battery packs in the model • See page 14

6. Turn on the radio system • See page 18

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

7. Check servo operation • See page 19

Make sure the throttle, steering, and shifting servos are
working correctly.

8. Range test the radio system • See page 20

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

9. Decal and Install the body • See page 10

10. Drive your E-Maxx • See page 21

Driving tips and adjustments for your E-Maxx

11. Maintaining your E-Maxx • See page 28

Follow these critical steps to maintain the performance
of your E-Maxx 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 E-Maxx.

Quick Start: Getting up to Speed

8

The tires on your E-Maxx must be glued to the rims using CA
tire glue to prevent the rims from spinning inside the tires.You
can glue the tires without removing the wheels from the truck.
For clarity,these instructions show the process with the wheels
removed.

1. Remove a wheel from the
E-Maxx using the larger
(8mm) end of the glow plug
(universal) wrench.

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

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

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

Always wear safety
glasses to prevent
glue from splattering

into your eyes.

The acetone in
fingernail polish

remover will
remove excess glue from
your fingers.

Gluing The Tires

9

Hub

Axle Pin

Decorating Your E-Maxx

Applying The Decals

The ProGraphix painted
body is covered with a
protective film for shipping.
You must remove this film
before applying any decals.

To remove the film, lift a
corner of the film and
carefully pull it off the body
in one continuous piece.

Your E-Maxx decals are die­cut for easy removal. Use a
hobby knife to lift the
corner of a decal and lift it
from the backing.

Carefully position the decal
over the desired location
and press one side on the
body.Pull the decal tight
and use a finger to gradually
smooth out any air bubbles
as you apply the decal.

Look at the photos on the box for typical decal placement.

10

11

The Traxxas TQ-3 Radio System

C

H

.3

C

H

.2

C

H

.1

Antenna

Throttle Neutral Adjust

Steering Wheel

Throttle Trim

Steering Trim

Low/High
Gear Selector
Switch

Power Switch

Power Indicator

Battery Compartment

Servo
Reversing
Switches

Throttle Trigger

Your E-Maxx (model 3906) is equipped with the TQ-3 Radio
System.The TQ-3 is a 3-channel system that provides high-power
output up to a quarter mile and control for up to three servos.
The E-Maxx uses two servos and an electronic speed control.

E-Maxx Wiring
Diagram

TQ-3 Transmitter

Antenna

Receiver

Channel 1

Steering

Servo

Channel 3

Shifting

Servo

On/Off
Switch

7.2v

Battery

Connections

Channel2
EVX Electronic
Speed Control

Channel 3
Channel 2
Channel 1

Radio System Terminology

Please take a moment to familiarize yourself with these radio­system terms.They will be used throughout this manual.

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 flag 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. An ESC uses
MOSFET power transistors to provide precise,digital
proportional throttle and braking 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 E-Maxx. All Traxxas RTR models operate
on a 27 MHz frequency band.

Neutral position - The standing position that the servos seek

when the transmitter controls are at the neutral setting.

NiCad - Refers to rechargeable, nickel-cadmium batteries. The

most economical choice, since they may be recharged up to
500 times.

Receiver - The radio unit inside your E-Maxx that receives

signals from the transmitter and relays them to the servos.

Servos - Small motor units in your E-Maxx that operate the

shifting and steering mechanisms.

Three-channel radio system - The TQ-3 radio system,

consisting of the receiver, the transmitter,and the servos. The
system uses three channels: one to operate the steering, one
to operate the ESC (throttle/brakes) and a third channel to
control shifting.

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

steering instructions to your E-Maxx.

Tri m - The fine-tuning adjustment of the neutral position of the

servos, made by turning the throttle and steering trim knobs
on the face of the transmitter.

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.

Smart Braking

™

- Trademark name for technology developed

by Novak Electronics that allows the same throttle trigger
motion to control both braking and reverse functions.The EVX
speed control senses how fast the model is running and
applies the brakes to slow the model. Once stopped, reverse is
applied.

Channel Frequency Band Flag Color Traxxas Part No.

1 26.995 Brown 2031

2 27.045 Red 2032

3 27.095 Orange 2033

4 27.145 Yellow 2034

5 27.195 Green 2035

6 27.255 Blue 2036

The Traxxas TQ-3 Radio System

12

13

The Traxxas TQ-3 Radio System

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

Use the Right Batteries

Your transmitter uses AA
batteries. Use new alkaline
batteries, or rechargeable
batteries such as NiCad or
Ni-MH (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 much more quickly than
regular alkaline batteries.

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

If the power indicator
doesn’t light red, check

the polarity of the
batteries. Check rechargeable
batteries for a full charge.

CH.3

CH.2

CH.1

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.

One-Touch Setup™- Novak Electronics trademark name for

circuitry inside the EVX electronic speed control that allows it
to adjust to the transmitter settings by pressing a button on
the speed control and operating the transmitter controls (see
page 26 for instructions).

Polar Drive Circuitry™- Trademark name for technology

developed by Novak Electronics that allows the EVX speed
control to operate more efficiently at part throttle, and
recharge the batteries during braking (regenerative braking).
This results in cooler running, increased power handling, and
longer run times.

Installing Transmitter Batteries

Your TQ-3 transmitter uses 8 AA batteries.The battery
compartment is located at the base of the transmitter.

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

Installing Battery Packs

The E-Maxx requires two fully charged 7.2 volt NiCd or NiMH
battery packs. Do not run the E-Maxx with just one battery.
These batteries are not included with the model.You can use
either side-by-side racing style packs or the more common stick
packs.The battery compartments on the E-Maxx are designed to
handle both. The E-Maxx’s run time is greatly affected by the
milliamp hour (mAh) rating of the batteries. A 3000 mAh battery
pack will theoretically run twice as long as a 1500 mAh sport
pack. Follow the charger manufacturer’s directions for charging
and caring for your battery packs.

The battery compartments are configured for stick packs from
the factory. If you are using side-by-side racing packs, then you
will need to reconfigure the battery hold downs as shown:

Stick packs

1. Remove the body clip securing the battery hold down. Lift
the end of the hold down and swing it out.

2. Slide the battery pack in place.Swing the hold down back in
and over the post.

3. Secure it with the body clip.Use the upper hole in the post.
Repeat for the other pack.

Side-by-side packs

When using side-by-side packs, the battery retainer must be
completely removed and flipped over.

1. Remove the shoulder screw which acts as the hinge for the
battery retainer. Replace the shoulder screw with the
supplied metal post (found in your instruction manual
packet).

2. Install the batteries in the compartment and then place the
battery hold down over the posts with the flat side facing up.

3. Secure the battery hold down with body clips in the lower
holes in the posts.

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.

If the radio system

doesn’t appear to

work when the
transmitter and model
switches are turned on,
check for correct battery
installation.

The Traxxas TQ-3 Radio System

14

Using stick packs

Using side-by-side packs

See page 25 for information about installing 7-cell (8.4 volt)
battery packs in the E-Maxx.

The Traxxas TQ-3 Radio System

15

Spray a little window
cleaner on the

antenna wire to
make it easier to push
through the antenna tube.

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.

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.

Setting Up the Antenna

You must install the antenna mast (tube) before you operate
your E-Maxx.You’ll find the plastic antenna tube and tip in the
bag with your manuals and documentation.

1. Locate the black antenna wire that exits the receiver.The
E-Maxx receiver is mounted in the front of the chassis.

2. Pull the wire straight with your fingers and then insert the
end of the wire into one end of the antenna tube. Push the
wire all the way through the antenna tube.

3. Pull the remaining wire through the antenna tube,and then
insert the base of the antenna tube into the molded post on
the chassis.

4. Fold the remaining antenna wire over the top of the tube
and secure it with the antenna tip.

5. On the transmitter,always fully extend the telescoping
antenna when running your E-Maxx. Make a habit
of holding the transmitter so that the antenna points
straight up.

Antenna Tip

Antenna Tube

The Traxxas TQ-3 Radio System

CH.3

CH.2

CH.1

ACCELERATE

BRAKE/REVERSE

L

E

F

T

NEUTRAL

R

I

G

H

T

TQ-3 Radio System Controls

16

Shifting

When the shift button on the handle is in the up position the
E-Maxx is in low gear. Normal operation is to start off in low gear
and when maximum motor RPM is reached, push the button
down to select high gear and continue accelerating. In order for
the transmission to shift, the throttle must be released
momentarily to take the load off of the transmission.This is
necessary since the transmission does not use a clutch.You may
downshift from high to low gear at any time. Often
downshifting serves as effective braking. The throttle must
momentarily be released to allow the transmission to downshift
as well.

Use common sense to protect the inner workings of your
transmission. Don’t try to shift from high to low while at the
same time switching from forward to reverse.Performing only
one operation at a time will reduce the chance of damaging
your transmission.
When changing from reverse to forward,there is no delay.Avoid
doing reverse to forward "slams." Continuous abuse of this type
could result in damage to your speed control or transmission.

LOW

GEAR

HIGH

GEAR

The Traxxas TQ-3 Radio System

17

TQ-3 Radio System Adjustments

In addition to the electronic throttle and steering trim controls,
your radio system features throttle neutral adjustment and
servo reversing switches.

Throttle Neutral Adjustment

The throttle neutral adjustment is located on the transmitter
face and controls the forward/brake 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 braking.
70/30: Allows more throttle travel (70%) and less

brake travel (30%).

50/50 is the recommended setting for the E-Maxx.

Electronic Throttle Trim

The electronic throttle trim located on the face of the
transmitter adjusts the neutral (center) point of the throttle
trigger signal to the electronic speed control.This control has
been preset for you at the factory.If the motors run when the
truck (EVX) is switched on, then turn the throttle trim control on
the transmitter until the wheels stop.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 pages 25 and 26.

Electronic Steering Trim

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

Servo Reversing Switches

On the front of the transmitter there are three switches,one for
throttle, one for steering, and one for shifting. Moving the
switches reverses the direction of the servo. For example, if you
turn your steering wheel right and the model moves left, then
switch the steering servo reversing switch to correct the servo
direction. The electronic trim may need readjustment after
moving the switches.

▼▼

CH.3

CH.2

CH.1

Channel Servo

1Steering
2Throttle
3Shifting

TQ-3 Radio System Rules

Each time you prepare to run your
E-Maxx, 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 truck is assigned to.

Always turn your TQ-3 transmitter on first and off last. This
procedure will help to prevent your E-Maxx from receiving
stray signals from another transmitter, or other source, and
running out of control.

Always have the transmitter turned on before you plug in
the battery packs in the model.

Always use new or freshly charged batteries for the radio
system. Weak batteries will limit the range of the radio signal
between the receiver and the transmitter. Loss of the radio
signal can cause you to lose control of your E-Maxx.

▼

▼▼ ▼

Channel 1

Brown

Channel 2

Red

Channel 3

Orange

Channel 4

Yellow

Channel 5

Green

Channel 6

Blue

C

H

.3

C

H

.2

C

H

.1

12

Remember, always
turn the TQ-3

transmitter on first
and off last to avoid
damage to your E-Maxx.

Your EVX
electronic speed

control was set up
with 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 motors
run when the truck (EVX)
is switched on, then turn
the throttle trim control
on the transmitter until
the wheels stop. 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
pages 25 and 26.

18

The Traxxas TQ-3 Radio System

3

The Traxxas TQ-3 Radio System

Using the TQ-3 Radio System

The TQ-3 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 flashing).

2. Plug the NiCd batteries in the model into the electronic

speed control.

3. Elevate the E-Maxx so that all four tires are off the ground.If

you are holding the E-Maxx, grip it firmly. Make sure your
hands are are clear of the moving parts of the E-Maxx.

4. Move the switch in the E-Maxx to the “ON” position.The servo
and speed control should jump and move to their idle
(neutral) position.The motors may run momentarily,causing
the E-Maxx to lurch.

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. Operate the throttle trigger to ensure that you have full
forward and reverse operation,and that the motor stops
when the throttle trigger is at neutral.

8. Operate the shift button on the transmitter and check for
rapid operation of the shifting servo. Push the shift button up
for first gear; the servo will pull the shift rod out of the
transmission. Push the shift button down for second gear; the
servo will push the shift rod into the transmission.

9. Once adjustments are made, turn off the switch on your
E-Maxx, followed by the handheld transmitter.

Shifting

Servo

Steering

Servo

1°

1°

E-Maxx Servo
Operation

When NiCd
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.

Because your
E-Maxx features

zero-scrub-radius
suspension and wide tires,
the steering servo will not
fully turn the front wheels
when the vehicle is not
moving.

19

The Traxxas TQ-3 Radio System

Range-Testing the TQ-3 Radio System

Before each running session with your E-Maxx, 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 (Using Your Radio System, pages 18-19).

2. Have a friend hold the model. Make sure hands and clothing are
clear of the wheels and other moving parts on the E-Maxx.

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.

Don’t attempt to
operate your

E-Maxx if there are
any problems with your
radio system or radio
interference at your
location.

20

Driving the E-Maxx

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

Allow the E-Maxx to
cool for a few minutes
between runs.
The radio system is not waterproof. Avoid driving through
puddles or mud. If water gets into the electronics it could
damage them.
Do not continue to operate the truck 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 truck at night, on public streets, or in large
crowds of people.
If the truck becomes stuck against an object, do not
continue to run the motors. Remove the obstruction before
continuing. Do not push or pull objects with the E-Maxx.
Because the E-Maxx 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 truck in order to prevent collisions.
Use good, common sense whenever you are driving your
truck. Intentionally driving in an abusive and rough manner
will only result in poor performance and broken parts. Take
care of your E-Maxx so that you can enjoy it for a long time
to come.

Driving Tips

Monster trucks by design have a high center of gravity that
requires a different driving technique.To prevent rollovers,
slow down as you approach turns and then apply strong

throttle through the turns.This technique will help the
E-Maxx grab the surface and turn sharper.
When jumping the E-Maxx, make sure to release the throttle
just before the wheels contact the ground. Holding the
throttle wide open as the truck lands could damage
transmission and driveline components. Do not shift the
transmission while the truck is in the air.
Drive over large obstacles (such as curbs and rocks) at an
angle, instead of head on. This will allow the suspension to
articulate and absorb the impact much easier.

About Run Time

The E-Maxx is able to achieve long run times due to the greater
efficiency of the high voltage electrical system. 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 for us to give you exact run times for the E-Maxx.
Another major factor which affects run time is how the E-Maxx
is driven. Our experience has shown that the run times are
shorter when the truck is driven continuously,in high gear,at
top speeds. In off-road situations with lower speeds and mostly
low gear usage, expect much longer run times.

Tips for Increasing Run Time

Use batteries with the highest mAh rating you can purchase.
Use a high-quality peak-detecting charger.
Discharge the batteries completely after each run.
Vary your speed.Continuous high-speed, high-gear running
shortens the run time on the E-Maxx.
Maintain your E-Maxx. Do not allow dirt or damaged parts to
cause binding in the drivetrain. Keep the motors clean and
the motor bushings lightly lubricated.

▼ ▼▼▼▼ ▼ ▼

▼▼▼▼▼▼▼▼

21

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

Adjusting the Slipper Clutch

The E-Maxx is equipped with an adjustable slipper clutch to
protect the drivetrain from sudden shock loads (such as landing
off of jumps with the motors at full throttle). Under normal
conditions, the slipper clutch should not slip. Before adjusting

the slipper clutch, turn the radio system off and unplug the
batteries in the E-Maxx. If the motors turned while the
adjustment wrench is inserted, you could be injured. Do not
touch the 3 metal heatsinks on the electronic speed control
together with any metal object or tool when the speed control
is turned on! This could damage

the speed control.

Use the
supplied universal wrench to tighten the slipper nut (clockwise)
until it stops and then back the adjustment out 1/4 of a turn.You
can make this adjustment without removing the gear cover,
instead removing only the rubber plug in the center of the gear
cover. If you notice any decrease in the E-Maxx’s performance
while making changes to the slipper clutch adjustment, then it
may be too loose.The slipper must not be allowed to slip during
normal acceleration or the slipper could be damaged.

Adjusting the Toe-in

Your E-Maxx comes from
the factory with zero
degrees of toe-in in the
front, and one degree of
toe-in in the rear.You can
adjust the toe-in on the
front and rear of the truck.
Set the steering trim on
your transmitter to neutral.
Now,adjust your steering
turnbuckles so that both
front wheels are pointing

straight ahead and are
parallel to each other (0 degrees toe-in).This will ensure the
same amount of steering in both directions. Adjust the rear toe
control links so that the rear wheels have 1˚ of toe-in.

Adjusting the Camber

Two pivot balls are accessible through the
spokes of each of the wheels on your
E-Maxx. From the factory, the pivot balls are
completely tightened into the suspension
arms, which give each of the wheels –1˚ of
camber.Unscrewing the bottom camber
pivot ball with a 2.5mm hex wrench will increase the wheel’s
negative camber.You should not adjust the top pivot ball;
unscrewing it will increase positive camber and will also change
the wheel’s toe-in.

Adjusting the suspension

The E-Maxx has adjustable suspension so
that it may be optimized for different
kinds of terrain and driving styles.

Fine Tuning the Shocks

The eight shocks (oil dampers) on your
E-Maxx have tremendous influence on its
handling.Whenever you rebuild your
shocks, or make any changes to the
pistons, springs or oil, always do it
carefully and in sets (front or rear). Piston
head selection depends on the range of
oil viscosities that you have available.For
example, using a two-hole piston with
lightweight oil will give you the same
damping as a three-hole piston with
heavier oil.We recommend using two-hole pistons with a range
of oil viscosities from 10W to 40W (available from your hobby
shop).The thinner viscosity oils (30W or less) flow with less
resistance and provide less damping,while thicker oils provide
more dampening. Use only 100% pure silicone shock oil to
prolong seal life. From the factory, the E-Maxx uses 30W oil.

22

Adjusting Your E-Maxx

0°0°

1°

1°

-1°

-1°

Factory toe-in
settings can be

achieved by
installing the rod ends on
the turnbuckles until they
bottom out against the
shoulder. If you desire
more toe-out, the tips of
the rod ends must be
trimmed to allow them to
screw down further onto
the turnbuckle threads.

23

The ride height for the E-Maxx can be adjusted by adding or
removing the clip-on spring pre-load spacers. Note that changes
in ride height will occur when changes in shock angle or spring
rates are made.You can compensate for ride height changes by
changing the pre-load spacers on the shocks

Motors and Gearing

The Titan™550 Motors on your E-Maxx have been carefully
designed to match the needs of the E-Maxx.The Titans are made
to run efficiently at high voltage to provide more torque and

longer run times. We do not recommend converting the
E-Maxx to a typical low voltage setup using traditional 540
size motors. While these components will physically fit into the

E-Maxx, 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. If you are considering replacement motors, look
for 550 motors capable of 12 or more volts.

The E-Maxx is equipped from the factory with a 66-tooth spur
gear and 18-tooth pinion gears. E-Maxx 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). For more top speed, use a larger pinion gear
(lower 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 motors, do not use a

pinion gear larger than 20-tooth with the stock 66-tooth spur
gear or, do not go lower numerically than 16.1 to 1 gear ratio
in high gear.

Caster Adjustment

The E-Maxx offers the ability to adjust the caster angle of the
front suspension. Caster adjustment may be used to influence
the understeer/ oversteer handling characteristics of the E-Maxx.
Increasing the caster angle will increase the tendency of the
truck to oversteer (less traction on the rear tires,more traction on
the front tires), while decreasing the caster angle will cause the
truck to have a tendency to understeer (push in the turns).This
effect becomes more pronounced at higher steering angles and

higher spring rates. Caster is adjusted by repositioning the shims
on the pivot point of the upper suspension arms.
The stock caster setting is 7-degrees with one shim at each end
of the arm. Reduce the caster angle to 4-degrees by removing
the rear shim and inserting it next to the front shim. The caster
angle can be increased to 10-degrees by removing the front
shim and inserting it next to the rear shim.

Shock Mounting Positions

Big bumps and rough terrain require a softer suspension with
the maximum possible suspension travel and ride height. Racing
on a prepared track or on-road use requires a lower ride height
and firmer,more progressive suspension settings.The more
progressive suspension settings help reduce body roll (increased
roll stiffness), dive during braking, and squat during acceleration.
Upper shock mounting position (A) should generally be used
with lower shock mounting
positions 1 and 2. Upper shock
mounting position (B) should be
generally be used with lower
shock mounting positions 3 and

4.The innermost upper shock
mounting position (0) can be
used for tuning with the inner
pair of lower shock mounting
positions on the arm (1,2). It is
not compatible with lower
shock mounting positions 3 and

4. Other combinations may be
used to achieve individualized
suspension settings.

Adjusting Your E-Maxx

7°

Caster adjustment shims (1 Front, 1 Rear)

Vertical

Ground plane

Vertical

4°

Caster adjustment shims (2 Front)

Ground plane

Vertical

Caster adjustment shims (2 Rear)

Ground plane

10°

12

13

14

15

16

17

18

19

20

21

22

Pinon Teeth

Overall Reduction

Spur Gear

64 70 7266

1st
2nd

1st
2nd

1st
2nd

1st
2nd

1st
2nd

1st
2nd

1st
2nd

1st
2nd

1st
2nd

1st
2nd

1st
2nd

36.04

22.38

33.64

20.89

31.54

19.58

29.68

18.43

28.03

17.41

26.56

16.49

25.23

15.67

24.03

14.92

22.93

14.24

45.99

28.56

42.45

26.36

39.42

24.48

36.79

22.85

34.49

21.42

32.46

20.16

30.66

19.04

29.05

18.04

47.30

29.37

43.66

27.11

40.55

25.18

37.84

23.50

35.48

22.03

33.39

20.73

43.36

26.92

40.03

24.85

37.17

23.08

34.69

21.54

32.52

20.19

30.61

19.01

28.91

17.95

27.39

17.01

26.02

16.15

24.78

15.39

23.65

14.69

Do not

use with

Titan

motors.

Adjusting Your E-Maxx

Lower Shock Mounting Positions

In the out-of-the-box configuration, the shocks are installed in
position (A) on the shock tower and position (2) on the lower
suspension arm.This setting allows for moderate suspension
travel and ride height.The more vertical position of the shocks
allows for lower shock progression and the soft, plush feel that’s
characteristic of a Traxxas Maxx Truck.

The outer pair of holes on the lower suspension arm should be
used to lower the ride height of the E-Maxx, and increase the
spring force (at the wheel).This setting will improve high-speed
cornering on smoother terrain by lowering the center of gravity
and providing a firmer suspension feel. Body roll, brake dive,and
squat will be reduced.

Spring rate (at the wheel) increases as the lower shock mounting
position is moved from position (1) to position (4).This is
equivalent to using stiffer springs.Use higher spring rate settings
for flatter terrain with smaller and fewer bumps,and lower spring
rate settings for bigger bumps.

Ride height decreases as the lower shock mounting position is
moved from position (1) to position (4). Each pair of lower shock
mounting holes (1,2 and 3,4) has equal ride height. Use lower ride
height for high-speed cornering and flat terrain, and when racing
on relatively smooth tracks. Increase the ride height for rougher
terrain and tracks.

Upper Shock Mounting Positions

The upper shock mounting positions will have suspension effects
opposite from the lower shock mounting positions.

Spring rate (at the wheel), increases as the upper shock
mounting position is moved from position (A) to position (B).

Ride height is not affected by changes in the upper shock
mounting position.

Use the chart below to see the effect of the various shock
mounting positions. The horizontal length of the lines indicates
the amount of suspension travel. The angle or slope of the lines
indicates the spring rate (at the wheel).

24

For easier access to
the rear-most shock
mounting screw,

remove the one end of the
rear turnbuckle. In the front,
remove the suspension pin
from the lower front
suspension arm to gain
easier access to the lower
shock mounting screws.

2.5

2

1.5

1

0.5

0

010203040 6070809010

0

50

Wheel Force (lb)

Wheel Travel (mm)

Wheel Force vs. Wheel Travel

Lower Mount 1, Upper Mount 0
Lower Mount 2, Upper Mount 0
Lower Mount 1, Upper Mount A
Lower Mount 2, Upper Mount A
Lower Mount 3, Upper Mount A
Lower Mount 4, Upper Mount A
Lower Mount 1, Upper Mount B
Lower Mount 2, Upper Mount B
Lower Mount 3, Upper Mount B
Lower Mount 4, Upper Mount B

Less Firm

More Firm

Lower Mount 4

Lower Mount 3

Lower Mount 2

Lower Mount 1

25

Adjusting the Speed Control

The EVX electronic speed control installed in your E-Maxx has
been factory set and should not require any adjustments. The
EVX is a reliable and rugged reversible speed control for use with
two 6 or 7-cell battery packs and the stock Traxxas E-Maxx
motors.

The EVX has three user-selectable throttle profiles:
Profile #1: Forward with brakes and reverse: Novak’s Smart

Braking™Circuitry brings the model to a slow speed before
engaging reverse to save your vehicle’s gearbox and reduce
speed control heating. Forward and reverse are proportional.
Profile #2: Forward-only with brakes: Novak’s Reverse Disable
Circuitry locks-out reverse for forward-only or racing use. Brakes
are enabled.
Profile #3: Forward with 25% reverse: For applications where
reduced speed in the reverse direction is desirable.

Precautions

Follow these extra safety precautions for your protection and to
ensure long life for the EVX speed control.

Water and electronics don’t mix! Do not operate model in or
around water.Never allow water, moisture, or other foreign
materials to get inside the speed control.
Disconnect the batteries. Always disconnect the battery
pack from the speed control when not in use.
Transmitter on first. Turn on your transmitter before the
speed control so you will have control of the radio
equipment.
Don’t get burned! The transistor tabs and the heat sinks can

get extremely hot, so be careful not to touch them until they
cool. Supply adequate airflow for cooling.
Always use heat sinks. Three heat sinks are factory-installed
on the speed control and must be used for maximum cooling
and performance.

These additional precautions apply if the stock E-Maxx is
modified in the future. Please be aware that damage to the
speed control caused by modification of the E-Maxx or EVX will
not be covered by the warranty.This includes changing the
connectors.

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 accidentally mis-wiring
the speed control. If the EVX is not wired exactly as shown in
the diagram, it can be damaged!
Use neutrally timed motors. The motors installed in the
E-Maxx are neutrally timed. If you replace the motors, the
motors must have 0° timing.Modified motors (with adjustable
end bells) timed to 0° or Johnson/ Mabuchi (closed end bell)
motors are recommended.Using motors with other than 0°
timing will draw excess current in reverse,causing the speed
control to overheat and premature motor wear.
Motor capacitors required! If the factory installed stock
motors are replaced,three 0.1µF (50V) ceramic capacitors
should be properly installed on every motor to prevent radio
interference.These capacitors are available from your hobby
dealer (Novak Kit #5620).
No reverse voltage! The speed control is not protected
against reverse polarity voltage. If changing the battery
and/or motor,be sure to install the same type of connectors
to avoid 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.
Don’t 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.
Insulate the wires. Always insulate exposed wiring with heat
shrink tubing to prevent short circuits.

▼▼ ▼ ▼ ▼▼ ▼

▼▼▼▼

Adjusting Your E-Maxx

EVX Wiring Diagram - Follow this diagram exactly! The pos(+) and neg(-) battery
and motor inputs are not reversible.

BATTERY

BATTERY

Operating Your
E-Maxx on 14 Cells

The EVX electronic
speed control is capable of
handling 14 cells to power
the twin Titan motors. Only
use the 14 cell configuration
with the EVX and stock
Titan motors. For more
information on operating
the E-Maxx with 14 cells,
and complete 7 cell pack
assembly instructions, go to
www.Traxxas.com/7cell

26

Transmitter Adjustments for the EVX (TQ-3)

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

The Traxxas TQ-3 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 1/2 throttle
and 1/2 brake/reverse.

2. Set the Throttle Trim to the middle “0” setting.This adjusts the
neutral position of the throttle servo.

3. Set the Channel 1 Servo Reversing Switch to the left position.

4. Set the Channel 2 Servo Reversing Switch to the right position.

5. Set the Channel 3 Servo Reversing Switch to the right position.

6. Do not change the position of any of the servo reversing

switches after programming the EVX.

Speed Control Programming

To program the speed control, it should be connected to the
receiver,and the transmitter should be adjusted as described in
the previous section.

1. Disconnect the motors from the speed control.

2. Connect two fully charged battery packs to the speed control.

Connect one JST plug (RED & BLACK wires) to one battery
pack. Connect the other JST plug to the other battery pack.

3. Turn on the transmitter.

4. Turn on the speed control.

5. With the transmitter throttle at neutral,press and hold the

ESC SET button until the status LED turns solid red, and then
release the button.You are now in programming mode.

6. Pull the transmitter throttle trigger to the full throttle
position. Hold it there until the status LED turns solid green.
Note: The motors will not run during programming even if
they are connected to the speed control.

7. Push the transmitter throttle trigger to full reverse. Hold it
there until the status LED blinks green.

8. Release the transmitter throttle trigger allowing it to return to
neutral.The status LED will turn solid red, indicating that the
throttle is at neutral and the programming has been
completed.

9. Connect the motors to the speed control.Connect the red
speed control wires to motor’s red positive (+) leads. Connect
the black speed control wires to motor’s negative (-) leads.
Make sure the bullet connectors snap together securely.Refer
to the wiring diagram on page 25 for assistance.

The EVX speed control is now programmed & ready to go!

If the transmitter settings are changed, it will be necessary to
complete the programming sequence again.
If the SET button is released before the LED turns solid red in
step 5, the LED will blink 7 times and then return to the
normal operation mode.
If you experience any problems during programming,turn
off the speed control and repeat the programming steps.

Speed Control Throttle Profile Selection

The speed control is factory set to Profile #1
(forward/reverse/brake operation).To disable the reverse (Profile
#2), or reduce the reverse speed to 25% (Profile #3), follow these
steps.The speed control should be connected to the receiver
and the transmitter adjusted as described above.

1. Connect two fully charged battery packs to the speed control.
Connect one JST plug (RED & BLACK wires) to one battery
pack. Connect the other JST plug to the other battery pack.

▼▼▼

Adjusting Your E-Maxx

Using an Aftermarket
Transmitter with the EVX.

The following instructions are
provided as reference only for
those who are using an
aftermarket transmitter in place
of their factory TQ-3.

1. Set the High ATV or EPA to
the maximum setting. This is
the amount of servo throw at
full throttle.

2. Set the Low ATV, EPA, or ATL
to the maximum setting. This
is the amount of servo throw
at full brakes.

3. Set the Exponential to the
zero setting. This adjusts the
throttle channel linearity.

4. Set the Throttle Channel Trim
to the middle setting. This
adjusts the neutral position
and increases or decreases
the amount of coast braking.

5. Set the Throttle Channel
Reversing Switch to either
position. Do not change the
switch position after
programming.

6. Set the Electronic Trigger
Throw Adjustment to 50%
throttle and 50% brake throw
(or 5:5). This adjusts the
transmitter’s throttle trigger
throw on electronic/digital
transmitters.

7. Set the Mechanical Trigger
Throw Adjustment to a
position with 1/2 throttle and
1/2 brake throw. This adjusts
the transmitter’s throttle
trigger throw on mechanical/
analog transmitters.

27

2. Turn on the transmitter.

3. Turn on the speed control.

4. Press and hold the ESC SET button until the status LED turns

from solid red to solid green. Immediately release the ESC SET
button when it changes to green.

5. The LED will now flash red.The number of red flashes
indicates the active throttle profile.

Profile # Description Flashes

1 (Default) ........Forward/Reverse/Brakes..................1

2 ........................Forward only/Brakes ........................2

3 ........................Forward/25% Reverse/Brakes ........3

6. Press the ESC SET button to select the throttle profile.Each
press will advance the setting to the next profile. Note: To
change the profile you must press the ESC SET button
immediately after the LED flashes the current setting.
Once the LED flashes the desired setting number, wait and
the LED will turn green and the EVX will exit the
programming mode.

Adjusting Your E-Maxx

Denatured alcohol
(available from

home centers and
paint supply stores) in a
spray bottle is an extremely
effective cleaner. Be sure to
wear safety glasses and
gloves when working with
denatured alcohol. Remove
the radio system and ESC
before cleaning with
denatured alcohol or other
cleaners.

Always wear eye
protection when

using compressed air
or spray cleaners and
lubricants.

Your E-Maxx 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 tightness of the front pivot balls.

6. Check the mounting of the receiver and servo and electronic

speed control.

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

8. Check the operation of the radio system,especially the

condition of the batteries.

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

10. The steering servo saver will wear out over time. If the
steering becomes loose, the servo saver should be replaced.

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

12. Check the tightness of the slipper clutch.

Other periodic maintenance:

Slipper clutch pegs (friction
material):The slipper clutch
pegs will wear over time and
require replacement.The life
of the pegs depends on how
the slipper clutch was
adjusted and how the
E-Maxx was used. If the slipper will not tighten or you are
seeing signs of wear on the face of the gear,then the pegs
should be replaced.
Chassis: Keep the chassis clean of accumulated dirt and
grime. Periodically inspect the chassis for damage
Steering: Over time, you may notice increased looseness in
the steering system.There are several components which will
wear out from use: the servo saver (Traxxas part#3744), the
bellcrank bushings (Traxxas part #4943), and the tie rod ends
(Traxxas part #2742). Replace these components as needed

to restore factory tolerances. The bellcrank bushings may be
replaced with 5x8mm ball bearings (Traxxas part #2728).
Motors: Every 10-15 runs, remove,clean, and lubricate the
motors. Use a product such as electric motor cleaning spray
to flush dirt out of the motors. After cleaning,lubricate the
bushings at each end of the motor with a drop of light­weight electric motor oil.
Shocks: Keep the oil level in the shocks full. Use only 100%
pure silicon 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#2362.
Suspension: Periodically inspect the truck 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. If a U-joint pops apart then it is time to
replace the part. Remove the gear cover and Inspect the
spur gear for wear and check the tightness of grub screws in
the pinion gears.Tighten, clean,or replace components as
needed.

Storage

When you are through running the E-Maxx for the day, blow it
off with compressed air or use a product such as denatured
alcohol to remove dirt and grime from the truck.When using
denatured alcohol, unplug and remove the batteries. Be careful
not to spray it directly on the electronic components or into the
motors. Allow the E-Maxx to dry completely before recon­necting the batteries. Denatured alcohol is flammable and

should not be used where a spark may occur (such as in the
motors or battery connectors).

Always disconnect and remove the batteries from the E-maxx
whenever the E-Maxx is stored. If the E-Maxx will be stored for a
long time, then also remove the batteries from the transmitter.
The following section addresses some very basic ESC and radio

▼▼ ▼ ▼

▼▼ ▼

Maintaining and Storing Your E-Maxx

28

questions you may have about your E-Maxx.Most questions arise
from simple user errors or minor adjustments that are easy to
correct. If you can’t find a solution for your E-Maxx here,then visit
our Web site at www.Traxxas.com and click on the Customer
Support menu. There you will find a much more extensive and
detailed online troubleshooting area. In addition, you may call
Traxxas Customer Service at 1-888-TRAXXAS (outside the US call
972-265-8000).

Radio system does not work properly:

If the power light on the transmitter does not come on, check
for proper battery installation and that the batteries are new
and/or fully charged. If the power light is blinking, then the
transmitter batteries are weak and should be replaced.See
page 13 for more details.
If the transmitter light is on but the radio is still not
responding, check for proper installation of batteries in the
model and that the batteries are new and/or fully charged.
Check to make sure the on/off switch on the model is in the
on position. Check for damaged wires, a loose crystal, or loose
connections. See page 14 for more details.

Short radio range:

If the radio range appears short, then first check to make sure
the transmitter antenna is fully extended and that the
antenna in the E- is in place and has not been cut or
damaged. Next, make sure the batteries are all fully charged.
Finally, if you are still experiencing short range, try a different
location. Sometimes there can be interference from various
sources that can cause your radio to malfunction.

Steering channel works but the motors will not run

The speed control has thermally shut down. Allow the speed
control to cool down. Use a milder motor or a smaller pinion
gear.Check the drive train for restrictions. Check the motor
connections. Check the motors.
One motor is wired backwards. Check the wiring and correct.
Make sure the speed control is plugged into the throttle
channel of the receiver.Check operation of the throttle
channel with a servo.
Possible internal damage.Return the EVX to Traxxas
for service.

EVX will not go into programming mode

Make sure the EVX is plugged into channel 2 (the throttle
channel) on the receiver.If it is plugged into channel 3 or the
battery terminal, it will not go into programming mode.

Receiver glitches/throttle stutters during acceleration

Motor capacitors broken or missing - Check & replace
capacitors.
The receiver or antenna is too close to power wires or the
batteries.
Bad connections - Check the wiring and connectors.
Motor(s) worn - Replace the motors.
Excessive current to motor - Use a milder motor or a smaller
pinion gear.

Motor and steering servo do not work

Check the wires, radio system, crystals, battery and motor
connectors, and the battery packs.
Possible internal damage.Return the EVX to Traxxas for
service.

Model runs slowly / slow acceleration

Check the motor and battery connectors.
Bad battery or motor(s). Check the operation with known
good batteries and motors.
Incorrect transmitter or speed control adjustment. Refer
to the “Transmitter Adjustment” and “Speed Control
Programming”sections.

Motor runs backwards

Both motors wired backwards - Check the wiring and correct.

ESC is melted or burned/ESC runs with the switch off

Internal damage. Return the EVX to Traxxas for service.

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29

Troubleshooting Your E-Maxx

Antenna (receiver) 15

tip 15
tube 15

Antenna (transmitter) 11, 15
Antenna Mount 7
Axle pins 9
Batteries 6, 12, 13, 14, 23

alkaline 13, 19
low 21
mAh 14, 21
Ni-MH (nickel-metal hydride) 13
NiCad (nickel-cadmium) 6,12, 13,
19
receiver 13
rechargeable 13
side-by-side packs 14
stick packs 14
transmitter 13

Battery compartment (Chassis) 7
Battery compartment (Transmitter)
11, 13
Battery Connectors 11
Battery Hold-Down 7, 14
Body mount 7
Bulkhead 7
Bumper 7
Bumper mount 7
CA glue 9
Camber 22
Caster 23
Channel 11, 12, 18
Channel number 12
Charger 6, 14

peak-detecting 14
timed 14

Chassis 7, 28
Clearing your frequency 12
Compressed air 28
Cross-brace 7
Crystal 12, 18
Curbs 21
Customer service 4
Decals 10

Denatured alcohol 28
Differential 7
Driveline 28
Driving Tips 21
E-mail 4
Electronic Speed Control (EVX) 7,
11, 18, 29

adjusting 25
heat sinks 25
modification 25
precautions 25
profile #1 25
profile #2 25
profile #3 25
programming 26, 29
throttle profile selection 26
transmitter adjustments 26

Flag color 12
Frequency band 12, 15
Gearing 23
Half shaft 7
Hex hubs 9
Jumping 21
Maintenance 28
Motors (Titan) 7, 23, 28, 29
Neutral position 12
On/Off switch 7, 11
Pinion gear 23
Pivot balls 22
Power Switch 11
ProGraphix 10
Quick Start 8, 9, 10, 13, 14, 15, 18,
19, 20
Radio interference 20
Radio System 12, 19, 21, 29

adjustments 17
controls 16
interference 21
range-testing 20
rules 18
terminology 12
terms 12

Range 15, 18, 20, 29

Receiver 7, 11, 12, 15, 29
Required equipment 6
Ride height 23, 24
Rollovers 21
Run Time 21, 23
Safety 5
Servo reversing switches 11, 17
Servos 7, 12, 29

shifting 11
sluggish 21
steering 7, 11,19

Shifting 16-17, 21

high gear 16-17
low gear 16-17
shifting switch 11, 19

Shipping 4
Shock Mounting Positions 23, 24

Lower 24
Upper 24

Shock progression 24
Shock Tower 7
Shocks 7, 22, 28

Fine Tuning 22

Skid Plate 7
Slipper Clutch 7, 22, 28

pegs 28

Spring rate 24
Spur Gear 7, 23
Steering 28, 29
Steering mechanism 19
Steering Trim, Electronic 11, 12, 17,
19
Steering Wheel 11, 19
Storage 28
Supplies 6
Support 4
Suspension 28

adjusting 23, 24,25, 26, 27

Suspension Arms 7
Throttle Neutral Adjustment 11, 17
Throttle Trigger 11, 17, 19
Throttle Trim, Electronic 17, 18
Toe-in 22

Tools 6
Torque 23
Transmission 7
Transmitter 12, 18

aftermarket 26
indicator light 19
power indicator 11, 13

Trim, see also Throttle Trim and
Steering Trim 12
Troubleshooting 29
Turnbuckle 7
Turns 21, 23
Understeer 23
Wheels 9
Wiring diagram 11
X-tal see also Crystal 12
Zero-scrub-radius 19

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Index

Index

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