Traxxas 5304 User Manual

2008 Platinum Edition

MODEL 5304

2 • REVO PLATINUM EDITION

INTRODUCTION

CONTENTS

INTRODUCTION ............................................................... 2

SAFETY PRECAUTIONS .................................................. 3

TOOLS, SUPPLIES AND REQUIRED EQUIPMENT ........ 3

RADIO INSTALLATION AND BATTERY CARE ................ 4

TIRE GLUING AND BODY DETAILING ............................ 5

THE TRX 3.3 RACING ENGINE ....................................... 6

TUNING ADJUSTMENTS ...............................................11

INDEX .............................................................................18

INTRODUCTION

Thank you for choosing the Traxxas Revo 2008 Platinum Edition. We
believe you have purchased the most technologically advanced, track­ready R/C monster truck available. Revo proudly demonstrates Traxxas’
passionate commitment to innovation, ultimate performance, and
unmatched engineering. Revo’s radically advanced suspension, chassis,
and transmission design takes performance to a higher level. Now with
over 50 proven championship features, Revo pushes the performance
envelope even further with track proven accessories. We’ve engineered
Revo to allow you to experience power, control, and responsiveness
that surpasses anything else you’ve driven.

To complete the Revo Platinum Edition for operation you will need;
two-channel transmitter with mini receiver, starter box, glow igniter,
charger for the receiver battery pack (3030X recommended), paint, and
Traxxas Top Fuel.

We know you’re excited about getting your new Revo on the track,
but it’s very important that you take some time to read through
the Owners Manual. This manual contains all the necessary set-up,
break-in, tuning, and operating procedures that allow you to unlock
the incredible performance and adjustment potential that Traxxas
engineers designed into Revo. Even if you are an experienced R/C

enthusiast, it’s important to read and follow the procedures in this
manual. Revo contains new technologies in the engine, suspension,
and transmission operation that you may not be familiar with. Pay
particular attention to the fuel and break-in requirements for the
engine. The advanced design of the TRX 3.3 Racing Engine has a

special break-in procedure that has been developed and proven
to produce the best-performing engine possible. Using traditional
or old-fashioned procedures could reduce engine performance
and longevity.

We want you to feel condent that you own the best performing truck
in the market and that it is backed by a team of professionals who aim
to provide the highest level of factory support possible. Revo is about
experiencing total performance and satisfaction, not just with your
truck, but also with the company that stands behind it. We truly want
you to enjoy your new Revo!

Thank you again for going with Traxxas.

BEFORE YOU PROCEED

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

Before running your Revo, look over this entire manual and examine the
truck carefully. If for some reason you decide the Revo is not what you
wanted, then do not continue any further. Your hobby dealer absolutely
cannot accept a Revo for return or exchange after it has been run.

Warnings, Helpful Hints, & Cross-References

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

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

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

Refers you to a page with a related topic.

TRAXXAS SUPPORT

Traxxas support is with you every step of the way. Read
below to nd out how to contact us and what your
support options are. If you have any questions about your
Revo 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 9:00 pm central time. Technical assistance is also available at www.
Traxxas.com. You may also e-mail customer support with your question
at [e-mail]. Join hundreds of Traxxas R/C enthusiasts in
our online community at www.Traxxas.com.

Traxxas offers a full-service, on-site repair facility to handle any of
your Traxxas service needs. Maintenance, replacement parts, and
accessories may be purchased directly from Traxxas by phone or online
at www.BuyTraxxas.com. You can save time, along with shipping and
handling costs, by purchasing replacement parts from your local dealer.
Do not hesitate to contact us with any of your product support needs.
We want you to be thoroughly satised with your new Revo!

REVO PLATINUM EDITION • 3

INTRODUCTION

SAFETY PRECAUTIONS

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

• Revo is very fast! The Revo is intended for experienced users with a
high level of skill. The TRX 3.3 Racing Engine is extremely powerful and
may require skilled driving to maintain control.

• The engine, brakes, and exhaust system may become extremely hot
during use. Be careful not to touch the parts, especially when refueling
or stopping the engine.

• Model engine fuel is dangerous and highly poisonous. Always follow
all directions and precautions printed on the fuel container. Model
engine fuel is poisonous to humans and animals. Drinking the fuel can
cause blindness and death. Handle with care and respect.

• Model engine fuel, especially when in a fuel dispensing bottle, may
look like a cool drink to a child. Keep all fuel out of the reach of

children at all times. Do not place fuel containers on the ground
where children can reach them. Pay close attention to where you
place your fuel and fuel bottle while you are driving.

• Model engine fuel is ammable. Never allow smoking, sparks, heat

or ame in the presence of fuel or fuel vapors.

• Prolonged exposure to the engine exhaust can be harmful. Avoid
breathing the engine exhaust. Always run your Revo outdoors, in a
well-ventilated area. Never run the engine indoors.

• Do not operate your Revo at night, or anytime your line of sight to the
model may be obstructed or impaired in any way.

• Never operate your Revo in crowds of people or busy pedestrian
areas. Revo is very fast and could cause injury to those unaware of
its presence. Keep small children at a safe distance away from the
operating area.

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

• The engine can be loud. If the noise makes you uncomfortable, wear
ear protection. Be considerate of your neighbors by not running your
model early in the morning or late in the evening.

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

Children under 16 years of age and inexperienced drivers
should not operate the Revo without the supervision
of a responsible and knowledgeable (experienced) adult.

TOOLS, SUPPLIES, AND REQUIRED EQUIPMENT

Revo 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 wrench

• 8mm slipper clutch wrench

• 7mm turnbuckle wrench

• 17mm wheel wrench

• Antenna nut tool

• Suspension multi-tool

• 4-way wrench

• Glow plug and wheel nut wrench

• 1.5mm “L” wrench

• 2.0mm “T” wrench

• 2.5mm “L” wrench

• 2.5mm “T” wrench

• 5-cell NiMH RX Power Pack battery

• Suspension tuning shims and hollow balls

• Servo cable “Y” harness

• Front and rear black swaybars (stiffer)

• Spring pairs - Green, White, and Tan

• Shock oil - 40W and 60W

• Clutch bell - 16T

• Spur gears - 36T and 40T

Required Tools and Equipment

• Traxxas Top Fuel

10% quart - #5010
20% quart - #5020
33% quart - #5030

10% gallon - #5060
20% gallon - #5070
33% gallon - #5080

• Fuel dispensing bottle

• Flywheel starter box

• Glow igniter

• After-run oil

• Small at-blade screwdriver
for tuning (1/8 inch blade)

• Safety glasses

• Paint for the body

• 2-channel radio system with mini receiver

• Charger for RX Power Pack battery (such as

the Traxxas TRX Power Charger, part #3030X)

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:

• Hobby knife

• Side cutters and/or needle nose pliers

• Philips screwdriver

• Soldering iron

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

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

E-mail: [e-mail]

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

Internet: www.Traxxas.com

Entire contents ©2008 Traxxas. Traxxas, Maxx, Revo, TRX 3.3 Racing Engine, Top
Fuel, Ready-To-Race, Ready-To-Win, and ProGraphix are trademarks or registered
trademarks of Traxxas. Other brand names and marks are the property of their
respective holders and are used only for purposes of identication. No part of this
manual may be reproduced or distributed in print or electronic media without the
express written permission of Traxxas.

4 • REVO PLATINUM EDITION

RADIO INSTALLATION AND BATTERY CARE

This model requires the installation of a radio system. The receiver box
is designed to fit most standard size “mini” or “micro” receivers (actual
dimensions of box are 32mm wide x 45mm long x 26mm tall [1.26" x 1.77"
x 1.02"]). A rechargeable 5-cell nickel metal hydride (NiMH) battery pack is
include to power your radio system.

1.

Remove the lid from the radio box.

2.

Plug each steering servo into each of the channel 1 ports on the

receiver (for receivers with only one channel 1 port, use the included
Y-harness to plug both steering servos into the channel 1 port on
the receiver).

3.

Plug the throttle servo into the channel 2 port on the receiver.

4.

Plug the red battery plug from the on/off switch into the battery

port on the receiver.

5.

Leave the extra male

plug (black) from the
on/off switch loose
inside the receiver box.
This is the charge plug
and will need to be
used for charging the
receiver battery pack.

6.

Make sure the battery

Charging Jack

pack is plugged into the female plug (red) of the on/off switch.

7.

For receivers using crystals, make sure that the transmitter and

receiver crystals are on matching frequencies.

8.

Route the receiver antenna through the radio box lid and then slide

the antenna wire through the antenna tube.

9.

Use the supplied self-adhesive

A B

foam (located in your owner’s
manual package) to cushion
the receiver. Remove the
adhesive backing strip and
attach the foam to either the
bottom of the receiver or to the
shelf inside the radio box (A).

10.

Secure the lid to the radio box

with a body clip and then slide
an antenna cap over the end of
the antenna tube while leaving
the antenna wire exposed.

11.

Insert the antenna tube into

the mounting post. Slide the
crimp nut over the antenna
tube and screw it onto the
antenna post. Use the supplied
tool to tighten the crimp nut on
the post just until the antenna
tube is securely in place (B). Do not over tighten.

12

. Refer to your radio/receiver owner’s manual for proper radio set up

and operation.

CHARGING THE RECEIVER BATTERY

Your Revo is equipped with the RX Power Pack, a rechargeable 5-cell
nickel metal hydride (NiMH) battery pack. The RX Power Pack must be
fully charged before running the truck. Revo has a charging jack located
inside the receiver box so you do not have to remove the battery pack
from the model. To charge the battery, remove the receiver box cover
and plug the charger output cord into the charging jack. The on/off
switch must be in the off position to charge the receiver pack. Caution!

Never charge batteries in an enclosed car interior or while driving. Never
leave charging batteries unattended. Monitor them closely.

Typical Radio System Wiring

Charging

Jack

On/Off

Antenna

Receiver

(not included)

Switch

Battery

Channel 2
Channel 1
Channel 1*

Throttle

Servo

* Traxxas receiver #2216 shown has two Channel 1

RX Power Pack

5-cell NiMH

Battery

Steering

Servos

“Y” harness

outputs. Use the included “Y” harness for

receivers with one Channel 1 output.

BATTERY CARE

Some precautions should be taken to maintain the performance of the
rechargeable NiMH receiver pack in your model. Improper use of the
battery pack could result in personal injury or damage to your truck.

Only use approved chargers for NiMH battery packs (such as the Traxxas

•
TRX Power Charger, part #3030X). Do not exceed the maximum charge

rate of 1 amp.

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

•
damage to the battery pack.

Do not burn or puncture the batteries. Toxic materials could be released. If

•
eye or skin contact occurs, flush with water.

Store the battery pack in a dry location, away from heat sources

•
and direct sunlight.

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

•
Do not completely discharge the RX Power Pack or you could damage

•
it. Do not use dischargers on the pack. Store the battery with at

least 25% charge. Stop running and recharge at the first indication
of reduced voltage.

The optional Traxxas TRX Power Charger can
be purchased separately to charge the RX

Power Pack. The TRX Power Charger (Part
#3030X) is a peak-detecting unit that will charge
the RX Power Pack in about one hour. The
peak detection circuitry automatically shuts off
the charger when the maximum charge has been
achieved. The TRX Power Charger can operate on
either AC or DC power.

The optional DC car adapter (Part #3032) features a tangle-free,
extra long wire and integrated fuse. The long charging cord
allows the model to remain outside the car while charging.

Sold

Separately

Sold

Separately

REVO PLATINUM EDITION • 5

TIRE GLUING AND BODY DETAILING

TIRE GLUING

The tires on your Revo are pre-glued and ready for the track. Revo
rims are equipped with a special bead design that helps retain the
tires and reduces the stress places on the glue joint. Following are
instructions for how to glue your wheels and tires in future. You can
glue the tires without removing the wheels from the truck. For clarity,
these instructions show the process with the wheels removed.

wear safety glasses to prevent glue from splattering in your eyes.

1. Remove a wheel from Revo using the

included 17mm wheel nut 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.

Always

PAINTING THE BODY

Note: Please read this entire section and plan your paint job
before beginning.

Buying Paint

The body supplied with your model is molded from lightweight
and durable clear polycarbonate. It should be painted on the
underside so that the color will not be scratched off while running.
The best way to paint the body is by using thinned paints sprayed
through an airbrush or spray gun. If you do not have these tools, the
next best way is using spray can paints. Whatever paint you use, be
sure that it is made for painting Lexan
of paints and solvents can attack the body material and cause it to
appear foggy.

Preparing the Body

The body must be washed thoroughly with dish soap and water
to remove any grease or oil (i.e. ngerprints) which may keep the
paint from adhering to it. Dry the body completely with a soft, lint­free cloth.

Use the supplied masks to mask the windows. Mask off any stripes
or custom effects with either masking tape or special tape made for
striping. This special tape is available from automotive paint supply
stores and will provide sharper edges than masking tape. For easy,
custom-colored striping, automotive pin-striping tape can be applied
to the inside of the body and painted over. Be sure that all of your
tape and masks are fully pressed down (burnished) so that the paint
will not run or bleed underneath.

Usually, the darker colors are painted rst, followed by the lighter
colors. If your paint scheme would be easier to mask by covering
the dark areas and spraying them last, be sure the lighter colors are
opaque enough to prevent the darker color from showing through.
Lighter colors can be backed with silver to help make them opaque.

Spraying the Body

Read the directions on your bottle or can of paint and shake, mix, or
thin the paint, as required. It is very important to avoid breathing the
paint vapors, as they are extremely harmful. Spray the paint outdoors
in well-ventilated areas only. Apply the paint to the body sparingly

®

or polycarbonate. Other types

and in light coats. Be patient! Let the paint dry fully in between
coats. This will prevent accidentally smearing wet paint. Take extra
care when masks are being removed. After the body is completely
painted, remove the peel coat from the outside of the body.

DECALS

You are now ready to apply the decals. The decals have been die-cut
for your convenience. Test the position of the decals before applying
them to the body. Once the decals have been applied, they cannot
be removed without damaging them. You can spray the body with
window cleaner before applying the decals. This will allow you to
re-position them. Once positioned, squeegee the cleaner from under
the decal. The decal will adhere when it dries. If you have air bubbles
in the decals, puncture the center of each bubble with a sharp pin
and push the air out. If you have creases along the outer edges of a
decal (especially when applied to curved surfaces), use a hobby knife
to cut along the top of the crease and overlap the edges.

THE TRX 3.3 RACING ENGINE

INTRODUCTION

The TRX® 3.3 Racing Engine is the next generation
of TRX nitro power. The large displacement
and advanced porting generate class-leading
horsepower while still maintaining the
TRX Racing Engine characteristics of broad,
linear power delivery and ease of tuning.
Focused engineering and rigorous testing
have yielded unprecedented power and
uncompromising performance.

The TRX 3.3 Racing Engine takes a
total-system approach. Each part of
the engine, from the air filter to the
exhaust tip, is carefully engineered to
work in harmony with other engine components. Each part complements
the next, to extract maximum power. The TRX 3.3 Racing Engine is
designed to be tolerant of variations in tuning, and to run successfully
through a wide range of variable atmospheric conditions such as changes
in temperature, humidity, and altitude.

In order to get the longest engine life and keep the TRX 3.3 Racing
Engine in top running condition, it is very important to perform regular
routine maintenance. The number one cause of premature engine wear

and failure is lack of care and maintenance!

STARTER BOX AND GLOW IGNITER

The TRX 3.3 Racing engine in your Revo is equipped with a backplate the
pull start or EZ-Start system. A starter box is required for running. Starter
boxes designed to accommodate the Revo are available from your local
hobby dealer. You will also need a glow plug igniter (glow driver) to light
the glow plug. Use a high-high quality rechargeable glow igniter. Make
sure it is fully charged per the manufacturer’s instructions.

BREAK-IN

The TRX 3.3 Racing Engine is manufactured to exacting tolerances and
requires a specially-designed break-in procedure to accomplish the final
precision fitting of the internal engine components. It is very important
that you follow the new break-in procedure as closely as possible to
achieve the best performance and longest life from your TRX 3.3 Racing
Engine. Engine break-in will take between one and two hours. Old style
break-in procedures, such as idling the engine on the bench for several
tanks of fuel or simply running the engine with a very rich fuel mixture
for the first 4 tanks of fuel, will not achieve the best results. Follow the
easy steps in this manual.

AIR FILTER MAINTENANCE

A clean air filter is critical for long engine life. Due to the high­performance nature of the TRX 3.3 Racing Engine, a tremendous amount
of vacuum is created to move a large volume of high-velocity air through
the carburetor. Dirt is the worst enemy to your engine. Clean the air filter
after each hour of running to prevent sucking dirt into the engine.

AFTER-RUN MAINTENANCE

Perform after-run maintenance on the engine to prevent corrosion
from building up on the internal engine components. The fuel naturally
attracts moisture and corrosion can build up very quickly inside the
engine if it is not prevented.

A few minutes spent before and after each time you run your model will
allow you to enjoy it for a long time to come. Read on for more exciting
details about your new engine.

THE FUEL

Use the Right Fuel

It’s imperative that you use the correct fuel in your
TRX 3.3 Racing Engine for maximum performance
and engine life. Traxxas Top Fuel™ should be used to
ensure correct engine lubrication, performance, and
ease of tuning. Traxxas Top Fuel has been proven in
thousands of engines, so you can count on it every
day for great performance.

• Top Fuel is the only fuel which is 100% certified for
use in Traxxas engines.

• Traxxas Top Fuel is made with just the right balance of the highest
grade natural and synthetic lubricants to allow excellent throttle
response and the best top-end performance, without sacrificing long­term durability.

• All of the components in the fuel are carefully selected from the
best materials available and then custom blended to match the
metallurgy and temperature characteristics of Traxxas engines.

You may use 10%, 20% or 33% nitro-content fuel. Try to use the same
percentage all the time and avoid switching back and forth between
fuels. We recommend that if you break in your engine on 20% fuel that
you continue to use that percentage. If you do move to a higher or lower
percentage, make sure you readjust your fuel mixture to compensate.

What about Other Fuels?

Can other brands of fuel be used besides Top Fuel? There are other fuels
that can provide satisfactory performance; however there could be long­term costs in the form of decreased engine performance, loss of tuning
ease, and shorter engine life. Only use fuels that contain both castor and
synthetic oil.

Everyone has an opinion or a claim to make about fuel. The engineering
team at Traxxas has spent years developing TRX Racing Engines.
No one knows more about the specific fuel requirements of Traxxas
engines than Traxxas engineers. We strongly urge you not to take
chances with your engine investment and use the Traxxas fuel made for
the TRX 3.3 Racing Engine.

Choosing a Nitro Percentage

A commonly asked question is “what is the difference between 10%,
20%, and 33% fuels?” Increasing the nitro in the fuel is almost like adding
extra oxygen to the combustion process. It burns more efficiently,
improves combustion, and delivers more power. When increased nitro
is used, more of the other fuel components are then required inside the
combustion chamber to maintain the perfect air/fuel ratio. Therefore,
overall fuel mixtures need to be richened slightly (on the high speed
needle, about 3/4 of a turn counterclockwise when changing from 20%
to 33%, about 1/2 of a turn counterclockwise when changing from 10%
to 20%). This allows greater fuel flow through the engine and promotes
cooler running, even at the maximum lean settings.

Traxxas strongly discourages changing or modifying any part

of the TRX 3.3 Racing Engine. Old tech tips and tricks that may
have boosted the power of other engines could seriously diminish the
performance of the TRX 3.3 Racing Engine.

6 • REVO PLATINUM EDITION

There’s more advanced thinking, development and testing in the
stock parts of your TRX 3.3 Racing Engine than in many aftermarket
manufacturer’s performance parts. The TRX 3.3 Racing Engine is already
the most powerful engine in its class and may not benefit from average,
low-tech, aftermarket bolt on performance items.

THE TRX 3.3 RACING ENGINE

If 33% improves power, then it seems that the highest nitro content
available (beyond 33%) should always be used in the engine. In reality,
there are practical limitations. Engines are designed to run best within
a range of nitro percentages. How the engine is ported, the size of the
combustion chamber and other factors determine how much nitro can
be efficiently used in the engine. The TRX 3.3 Racing Engine responds
exceptionally well to a maximum of 33% nitro, returning cooler temps,
more power, and a smoother throttle response. For those who want to
run higher nitro, 33% Top Fuel is the optimum nitro percentage for the
TRX 3.3 Racing Engine. Increasing the nitro beyond 33% can introduce
the need for engine modifications (ports, head shimming, etc.) to avoid
starting and tuning difficulties. There are limits to how much nitro an
engine can effectively use to make more power. Lower nitro percentages
have their own advantages. Nitro is an expensive component in the
fuel so 10% nitro blend is more economical for the sport user. 10% also
provides greater latitude with the needle settings for easier tuning.

When using Traxxas Top Fuel, using higher nitro percentages does not
cause the engine to wear out faster. 33% Top Fuel contains the same
quality lubrication package as 10 and 20% Top Fuel. Some non-Traxxas
high-percentage nitro racing fuels do sacrifice some lubrication in
attempts to increase performance. We urge you to not take chances with
your engine investment and use Top Fuel for consistent performance and
long engine life.

Handling the Fuel

• Follow all directions and warnings on the fuel can.

• Keep the fuel tightly capped at all times. Some components in the fuel
can evaporate very quickly and upset the balance of the fuel.

• Do not store unused fuel in the fuel dispenser. Immediately return fresh
unused fuel back into the fuel can.

• Do not mix old and new fuel. Never mix different fuel brands together.

• Store the fuel in a cool dry location, away from any source of heat,
ignition, flame or combustion.

• Read and follow the safety precautions on page 3 in this manual.

DANGER! Model engine fuel is poisonous to humans and animals.
Drinking the fuel can cause blindness and death. Handle with care
and respect. Keep it out of reach of small children at all times! While
driving, do not leave your fuel dispensing bottle on the ground
where a child could have access to it. Follow fuel label warnings.

BREAKING IN YOUR TRX 3.3 RACING ENGINE

The TRX 3.3 Racing Engine uses a ringless, aluminum-brass-chrome (ABC)
piston/sleeve construction. This type of engine design relies on a very precise
running fit between the piston and sleeve for cylinder sealing. Engine break-

in is necessary to allow the piston and sleeve to develop an extremely
precise fit and optimum cylinder sealing. Therefore, proper engine break­in is critical to achieving the fastest, most reliable engine performance.

1

Allow yourself about 1 to 1
engine break-in period will take 5 tanks of fuel in a Revo. The break-in time
is not the time to impress your friends with your new Revo. You must wait

until the engine is fully broken in before attempting sustained high speed
running. Patience and careful attention during break-in will reward you with

the best-performing TRX 3.3 Racing Engine possible.

During break-in, your engine may appear to malfunction with symptoms
like stalling, inconsistent performance, and fouled glow plugs. These are
simply the normal “break-in pains” engines sometimes go through. They
will disappear once your engine is fully broken in. Many owners report
not experiencing any of these symptoms with TRX Racing Engines. We

recommend to go ahead and replace the glow plug with a new one after
the engine break in procedure.

/2 hours to complete the break-in procedure. The

People have differing opinions on what is the proper procedure
to break-in a model engine. Only use the Traxxas break-in

procedure. Other break-in procedures could result in a weak,

damaged, or otherwise poor performing engine. The procedure

outlined here was extensively tested and proven to yield better
performing engines than other “common” break-in methods.
Even if you have years of experience using model engines, please
do not ignore this caution!

Engine Break-in Procedure

The focus during break-in is to vary and limit the engine speed. This will
be accomplished by accelerating and stopping at different rates for the first
5 tanks of fuel. As the engine begins to break-in, the duration and intensity
of the acceleration will gradually increase. Sustained high-speed running
is not permitted until the 6th tank of fuel. Perform the initial break-in
on a large, flat, paved surface. Revo is very fast and by tanks 4 and 5 you

will need plenty of room for the truck to run in. Apply all throttle and
braking actions gently. Abrupt acceleration or braking could cause the
engine to stall unnecessarily.

• Special break-in fuels are not recommended. Use the same fuel you plan
to use everyday.

• If possible, avoid breaking-in the engine on extremely hot or cold days
(see page 9).

• Pay careful attention to the fuel level. Do not allow the fuel tank to run
completely empty. An extremely low fuel level causes the mixture to
run too lean. This could result in a burned glow plug or extremely high
engine temperatures.

• Do not attempt to break in the TRX 3.3 Racing Engine by idling it on a

stand. This will produce poor results.

• Keep extra Traxxas glow plugs handy. The break-in process can cause
deposits to form on the plug leading to plug failure.

• Change or clean your air filter after break-in.

• Follow the instructions exactly for each of the first 5 tanks of fuel.

• Never run your Revo indoors. Since the TRX 3.3 Racing Engine
exhaust fumes are harmful, always run your model outdoors, in a
well-ventilated area.

• Read and follow the safety precautions on page 3 in this manual.

Starting Your TRX 3.3 Racing Engine for the First Time

Before you start your TRX 3.3 Racing Engine for the first time, make sure
you have read all instructions and precautions in this manual. Pay close

attention to the tank-by-tank break-in instructions in the next section,
and make sure you have read and understood them before you run
your engine.

Your TRX 3.3 Racing Engine doesn’t usually require priming. If you
do need to prime your engine, watch the fuel line carefully to avoid
ooding your engine.

Your engine must be at room temperature (70°F or 21° C) or above the
first time you start it. If it’s cooler than room temperature outside, remove

all fuel and keep your Revo indoors until you’re ready to start it and then
take it outside. If it’s colder than 45 degrees, special considerations should
be made. See cold weather break-in on page 9. We do not recommend
running the model in temperatures below 35 degrees.

Note: The initial startup fuel mixture settings have been pre-set at the
factory. Do not change the settings.

1. Turn on the radio system.

2. Make sure the throttle trigger on the transmitter is in the idle

(neutral) position.

REVO PLATINUM EDITION • 7

8 • REVO PLATINUM EDITION

THE TRX 3.3 RACING ENGINE

3. Connect the glow igniter to the engine.

4. Place the model on a starter box and engage

the starter. Watch for fuel moving through
the fuel line up to the carburetor. Watch
closely! The fuel moves very fast. If the fuel
doesn’t move through the line within 5
seconds, prime the engine by briefly (one
or two seconds) covering the exhaust outlet
with your finger until the fuel is just visible in
the carburetor fuel line. Watch carefully! If

the engine is primed too long, it will flood with fuel and stop turning.

5. Once fuel reaches the carburetor, the engine should quickly start and idle.

6. Disconnect the glow igniter from the model.

7. Proceed with the engine break-in.

8. Do not rev your engine with no load (wheels off the ground).

If your engine doesn’t start, refer to the troubleshooting tips on www.
traxxas.com/support. If you still have problems, contact Traxxas Customer
Support at 1-888-TRAXXAS or [e-mail].

Factory Needle Settings

If your factory preset carburetor adjustments
have been tampered with, use the following settings:

• Set the high-speed needle to 4 turns out

Fig. A

from closed.

• Set the low-speed needle so the screw
head (red in Fig. A) is flush (even) with the
end of the slide (yellow in Fig. A).

Always use the factory settings for initial

Low Speed

Needle Adjustment

starting. Only use these settings when the
factory settings have been lost.

Break-in Checklist

Tank 1

1. Drive the model with the body off.

2. Driving procedure: Gently pull the throttle trigger to 1/4 throttle
over a 2-second count. Then gently apply the brake to stop. Count

the two seconds out while accelerating: one thousand one, one
thousand two, and then stop. Operate the throttle trigger as smoothly
as you can. Repeat this starting and stopping procedure until the

first tank of fuel is nearly empty.

3. Look for thick blue smoke exiting the exhaust outlet. If there is

no smoke, richen the high-speed needle 1/4 turn, by turning the
needle counterclockwise.

4. When the fuel tank is nearly empty, shut off the engine by pinching
the fuel line connected to the carburetor (use the installed clamp).

5. Let the engine cool for 15 minutes.

Note: If at any point the engine cuts out or stalls during gentle

acceleration, richen the high-speed needle 1/4 turn by turning the
needle counterclockwise.

Tank 2

1. From tank 2 forward, Revo should be driven with the body on.

2. Driving procedure: Gently pull the throttle trigger to 1/2 throttle
over a 2-second count. Then gently apply the brake to stop. Count

the two seconds out while accelerating: one thousand one, one
thousand two, and then stop. Repeat this starting and stopping

procedure until the second tank of fuel is nearly empty.

3. When the fuel tank is nearly empty, shut off the engine and let it cool

for 15 minutes.

Tank 3

1. Driving procedure: Gently pull the throttle trigger to 1/2 throttle
over a 3-second count. Then gently apply the brake to stop. Count

the three seconds out while accelerating: one thousand one, one
thousand two, one thousand three, and then stop. Repeat this

starting and stopping procedure until the third tank of fuel is nearly
empty.

2. As the engine loosens, the idle speed may increase and cause

the model to try to creep forward when stopped. Reduce the
idle speed by turning the idle adjustment on the carburetor
counterclockwise.

3. When the fuel tank is nearly empty, shut off the engine and refuel.
From here on, you do not need to let the engine cool between tanks.

Tank 4

1. Driving procedure: Gently pull the throttle trigger to full throttle
over a 3-second count. Then gently apply the brake to stop. Count

the three seconds out while accelerating: one thousand one, one
thousand two, one thousand three, and then stop. Repeat this

starting and stopping procedure until the fourth tank of fuel is
nearly empty.

2. Apply the throttle gradually! Your finger should not reach full throttle

until the end of the three-second count. Revo may try to shift into
second gear. If it does, reduce the throttle input. Do not let Revo shift
out of first gear.

3. Keep your driving smooth and consistent.

4. When the fuel tank is nearly empty, shut off the engine and refuel.

Tank 5

1. Driving procedure: Gently pull the throttle trigger to full throttle
over a 3-second count, hold for 2 more seconds, and then
gently apply the brake to stop. Count the five seconds out while
accelerating. Repeat this starting and stopping procedure until the
fifth tank of fuel is nearly empty.

2. The model should now be shifting into second gear. If it is not, try

turning the high-speed needle clockwise 1/8 turn to lean the fuel
mixture slightly and test for shifting.

3. When the fuel tank is nearly empty, shut off the engine and refuel.

Tank 6

STOP! Clean your air filter before you proceed. During the sixth tank of

fuel, the engine can be tuned for general performance use.

TANK THROTTLE TIME COOL BODY NOTES

1 1/4 2 seconds 15 minutes Off Apply throttle gradually.

2 1/2 2 seconds 15 minutes On Apply throttle gradually.

3 1/2 3 seconds - On Reduce idle speed if necessary.

4 Full 3 seconds - On Do not allow shifting to high gear.

5 Full 5 seconds - On Accelerate over 3 second count, hold for 2 seconds.

REVO PLATINUM EDITION • 9

THE TRX 3.3 RACING ENGINE

Winter Break-in Tips

During the break-in process, the piston
and sleeve wear into each other to form a
precise fit. The engine needs to heat up to a
temperature around 200 to 215 degrees to
allow the piston and sleeve to achieve this
fit properly. A precise fit between these two
components is critical for proper compression,
and optimum performance. If the engine
runs too cold during break-in, the piston and
sleeve will not expand to their appropriate sizes for break-in, and this can
lead to premature wear of these components. This wear may not become
apparent until after winter has past, and the engine is operated under
warmer running conditions.

• Warm the engine to approximately room temperature by removing
all fuel and storing the vehicle inside at room temperature until just
before starting the engine. An extremely cold engine can become
difficult to start.

• After the engine is running, it is important to keep the temperature of
the engine up around 200 to 215 degrees during break-in. In weather
below 45 degrees, the TRX 3.3 Racing Engine will tend to run at lower
temperatures between 160 to 180 degrees (when tuned at proper
break-in mixture settings). This is too cool for break-in. Do not lean the
fuel mixture to increase engine temperature! This will also decrease
lubrication and cause your piston/sleeve to wear prematurely.

• Wrap the cooling head with a paper towel, clean rag or sock to help
keep the engine running around the recommended 200 to 215 break­in temp. If too much heat is contained, the engine can actually run too
hot. Make sure that you monitor the engine’s temp closely for the first
couple of tanks until you get the right amount of cover for the cooling
head. This will, of course, depend on your current weather conditions.
Adjusting the cover up and down, exposing more or fewer cooling fins,
is a convenient way to regulate engine temps.

• For owners that do not have access to a temperature probe, a drop of
water on the cooling head (around the glow plug area) should slowly
sizzle for approximately 6 to 8 seconds around 200 to 210 degrees. If the
water sizzles for only a few seconds, then it is likely that it is over 220
degrees, and needs to cool down. If the water takes a long time or does
not evaporate at all, then the engine is too cool.

• We do not recommend that you operate your engine below 35 degrees
Fahrenheit. If you insist on running your vehicle below 35 degrees,
be aware that nitro engines may be very difficult to start and tune at
extremely cold temperatures. Also, at temperatures below freezing, nitro
fuel can actually begin to gel, and this can be harmful to the engine.

Follow the remaining break-in procedures as outlined in this Owners
Manual. This, along with the steps listed above, will ensure a good break­in for your new nitro engine, and provide many hours of enjoyment.

High Altitude Operation: If you live in a high altitude region (5000
or more feet above sea level), the lower air density may require
you to lean your high-speed fuel mixture slightly from the factory
break in settings. Try this if you are experiencing difcult starting
or extremely sluggish engine performance at high altitude.

TUNING YOUR TRX 3.3 RACING ENGINE

The engine’s performance
depends on the fuel
mixture. Turn the mixture
needles clockwise to
lean the fuel mixture
and counterclockwise
to richen it. Leaning the
fuel mixture will increase
engine power up to the
engine’s mechanical limits.

Never run the engine
too lean (not enough
fuel flow). Never lean the engine
until it begins to cut-out or stall.

Leaning the engine beyond the safe
allowable limits will result in poor
performance and almost certain
engine damage. Indications of an

overly lean mixture include:

• Cutting out or sudden loss of power during acceleration.

• Overheating (temperature beyond 270° F at the glow plug).

• Little or no blue smoke coming from the exhaust.

If any of these conditions are present, stop immediately and richen the
high speed mixture 1/4 turn. The engine will probably be slightly rich at
that setting and you can then retune for performance. Always tune for
performance by starting rich and moving leaner toward the ideal setting.
Never try to tune from the lean side. There should always be a light
stream of blue smoke coming from the exhaust.

Before you begin tuning, the engine should be warmed up to its normal
operating temperature and running slightly rich. All final tuning adjustments
must be made to the engine at its normal operating temperature. You can
tell the engine is running rich by noting any of the following:

• Sluggish acceleration with blue smoke coming from the exhaust.

• Revo may not shift into second gear.

• There is unburned fuel spraying from the exhaust tip.

• Leaning the high-speed fuel mixture increases performance.

High-Speed Fuel Mixture Adjustment

With the engine warm and running at a rich setting, gradually lean
the high-speed fuel mixture in 1/16 turn increments. Make several
high-speed passes after each adjustment to clear out the engine and
note any change in performance. The TRX 3.3 is extremely powerful.
Remember to apply the throttle gradually to prevent wheelies or loss of
control. Continue this procedure until there is no longer any performance

improvement. If any one of the following conditions occurs, the fuel
mixture is already past the maximum safe lean setting:

There is no longer any performance improvement.

1.

2. The engine begins to cut out at high speed (Danger!).

3. There is a sudden loss of power during acceleration (Danger!).

4. The engine begins to overheat. Symptoms of overheating include:

• Steam or smoke coming from the engine (not exhaust).

• Hesitation or stalling during acceleration.

• Popping or clattering sound when decelerating (detonation).

• Fluctuating idle speed.

• Temperature measurement above 270° F at the glow plug (A
temperature reading above 270° alone does not necessarily indicate
overheating. Look for other symptoms of overheating combined with
temperature for a more accurate warning).

10 • REVO PLATINUM EDITION

THE TRX 3.3 RACING ENGINE

Richen the fuel mixture to the optimum setting by richening the high­speed needle at least 1/8 turn counterclockwise and retest. This setting
will extend engine component life.

Low-Speed Fuel Mixture Adjustment

The low-speed mixture is always set after the high-speed needle is correctly
adjusted. The low-speed mixture is set using the pinch test.

Once the engine is warm, do several high-speed runs to confirm

1.

that the high-speed needle is set correctly.

2. Bring the vehicle in and pinch closed the fuel line going into the carburetor
(use the engine shut-off clamp). The engine should run for 2-3 seconds,
speed up, and then shut off.

3. If the engine runs longer than 3 seconds, then lean the low-speed needle
1/16 turn, make several more high-speed runs, and retest.

4. If the engine shuts off immediately without speeding up, then richen the
low-speed needle 1/8 turn, make several more high-speed runs, and retest.

When the low-speed needle is set correctly, the engine’s throttle response
should be very quick, even to the point of making it difficult to keep Revo
from doing a wheelie when you accelerate!

Idle Speed Adjustment

Once the high and low-speed mixtures have been set, reduce the idle speed
to the minimum reliable idle speed. Remember, this adjustment should be
made while the engine is running at normal operating temperature.

Turn the throttle trim on the transmitter so the brakes are

1.

applied (note its original position). This ensures that the throttle
slide is resting against the idle adjustment screw.

2. Turn the screw counterclockwise to reduce the idle speed, or clockwise

to increase it. The idle speed should be set as low as possible while still
maintaining reliable running characteristics.

3. Reset the throttle trim on the transmitter to its original position.

Fine-Tuning the Carburetor

After fine-tuning your TRX 3.3 Racing Engine at the end of the break-in
procedure, no major adjustments to the fuel mixture are usually necessary.
Make note of the temperature, humidity, and barometric pressure at the time
you finished fine tuning your carburetor. Current weather conditions can be
found online from national websites, local TV news websites, and television.
This information will be considered your baseline setting.

You may need to adjust your carburetor needles to compensate for changes
in temperature and barometric pressure (air density) from day to day.
Generally, you’ll need to richen the fuel mixture when the weather is colder
than your baseline temperature and the air density is higher. Lean the fuel
mixture when weather is warmer than your baseline temperature and the
air density is lower. The chart below provides general guidelines on how
weather conditions affect air density when they move higher or lower than
your baseline setting.

Tuning the Engine by Temperature

The following procedures require an optional
infrared temperature probe or on-board
temperature gauge (Traxxas on-board digital
temperature gauge, part #4091). Engine
temperature can be used as an effective tuning
aid when you understand the relationship between engine temperature
and ambient temperature. The engine operating temperature, when
tuned for maximum performance, will vary according to atmospheric
conditions, engine load, gauge accuracy, and many other factors. The
atmospheric condition that has the most influence on engine temperature
is air temperature. Expect the engine temperature to vary almost in direct
proportion to air temperature. Assuming you tuned the engine for the same
maximum performance each day, the engine will run about twenty degrees
hotter when it’s ninety degrees outside than it would in seventy-degree
weather. For this reason, we cannot give you a definitive temperature range
that indicates the best possible engine tuning.

There is NO optimal temperature that can be used as a target to deliver
the best engine tuning. Do not rely on a temp gauge alone to tune your
engine. Tune the engine by paying very close attention to how it responds
to changes in fuel mixture (more smoke/less smoke, fast/sluggish, reliable/
stalling, smooth sound/ muffled sound, etc). Once the engine is tuned, then

observe the temperature.

The temperature gauge can aid you in tuning by giving you a relative
indication of how your adjustments are affecting the engine and to help
prevent you from reaching excessive engine temperatures. For example,
as you lean the fuel mixture, the engine performance will increase along
with the temperature. If you continue to lean the fuel mixture and the
temperature increases but the engine performance does not change, then
you have exceeded the maximum safe lean setting. Make note of the engine
temperature. Generally, try to keep your engine from exceeding 270°F when
measured at the glow plug. If necessary, increase airflow to the engine by
cutting out the rear of the body, windshield, and front valance. In some
situations, the engine may perform very well with no stalling, lagging, or
hesitation at temperatures above 270°F, particularly in very hot climates.
If richening the fuel mixture to bring the temperature down to 270°F results
in poor, sluggish performance (engine never cleans out) then return the
engine back to a satisfactory state of tune based on how it sounds and
performs (always with a visible stream of blue smoke coming from the
exhaust) . If engine temperature is exceeding 270°F with proper cooling
and no signs of abnormal running, then avoid running the engine at its
maximum lean setting. Watch closely for any signs of overheating.
Richen the fuel mixture slightly to provide a safety margin of additional
cooling lubrication.

Symptoms of overheating include:

• Steam or smoke coming from the engine (not exhaust).

• Hesitation or stalling during acceleration.

• Popping or clattering sound when decelerating (detonation).

• Fluctuating idle speed.

Fuel Mixture Adjustment Chart

If the... is... then the air density is...

humidity lower slightly more dense slightly richer

pressure (barometer) lower less dense leaner

temperature lower more dense richer

altitude lower more dense richer

nitro % lower - leaner

adjust (correct) the
fuel mixture to be...

higher slightly less dense slightly leaner

higher more dense richer

higher less dense leaner

higher less dense leaner

higher - richer

REVO PLATINUM EDITION • 11

TUNING ADJUSTMENTS

SUSPENSION AND ALIGNMENT SETTINGS

Roll Center

There are two holes on the bulkheads
to mount each upper suspension arm.
The roll center of the vehicle can be
raised by mounting the upper control
arm in the lower of the two holes. This
will effectively increase the roll stiffness
of the vehicle (similar to installing
swaybars). Adding roll resistance to
one end of the vehicle will tend to
add traction to the opposite end.
For example, increasing roll resistance in the rear by installing the upper
arms in the lower holes will provide more traction for the front wheels and
potentially more steering. Installing the upper arms in the lower holes on
the front and rear will increase overall roll resistance without changing the
handling balance. From the factory, the arms are installed in the upper
position in the front and the lower position in the rear for track tuning. Note:
When the suspension arms are moved to the either mounting holes, the
front outer toe link ends and the rear toe control links should be repositioned
to eliminate bump steer. Refer to the Bump Steer Elimination chart on this
page, and look up your suspension combination (caster angle and roll center
position) to find the correct position for the front outer toe links and the rear
toe control links. Adjustment is achieved using the shims and hollow balls
provided with the vehicle.

Caster Adjustment

Caster adjustment shims (4 front, 0 rear)

The caster angle of the front
suspension may be used to adjust
the understeer (push)/oversteer
handling characteristics of the model.
Generally, increasing the caster
angle will move the truck towards an
oversteer condition (more traction
on the front tires, less on the rear
tires). Decreasing the caster angle will
create a tendency towards understeer
(pushing in the turns). From the
factory, the front suspension is set
to a caster angle of 15-degrees. The
rear caster angle is not adjustable.

Ground plane

Number & Position of Caster Adjustment

The caster angle of the front
suspension can be adjusted from
5° to 15°. Adjust the caster by
positioning the caster adjustment
shims on the upper control arms
of the front suspension as shown
in the table to the right.

Caster

5.0° None Four

7.5° One Three

10.0° Two Two

12.5° Three One

15.0° Four None

Caster Angle, and Bump Steer

Bump steer is unwanted change in the steering angle of the wheels as the
suspension travels up and down. It can result in unstable and unpredictable
handling. Bump steer is affected by the position of the outer toe link end
on the axle carrier. From the factory, the toe links are positioned so that
bump steer is virtually eliminated (about 3/100 of a degree through the
entire range of travel). When the caster angle is changed, the outer toe link
end should be repositioned on the axle carrier to maintain zero bump steer
geometry. Adjustment is achieved using the shims and hollow balls provided
with the vehicle. Refer to the Bump Steer Elimination chart and look up
your caster angle setting to find the correct position for the outer toe links.
Positioning the toe-links correctly will maintain the original factory geometry
and eliminate the unwanted steering angle changes caused by bump steer.

Upper Control Arm

Upper Control Arm

Upper Mounting Holes

Upper Mounting Holes

Upper Control Arm

Upper Control Arm

Lower Mounting Holes

Lower Mounting Holes

Vertical

15°

Shims (Front Upper Control Arm)

In Front of

Hinge Pin Boss

Behind Hinge

Pin Boss

Bump Steer Elimination Chart

The illustrations and the following table detail the position of the outer
toe link end for various caster and roll center settings to eliminate bump
steer. The shims and the hollow balls used to adjust bump steer are
provided with your vehicle.

FRONT

Outer Toe Link End Setup

Standard
Hollow Ball

Thin Shim
Thick Shim

Thin Shim
Standard

Hollow Ball
Thick Shim

Tall Center

Hollow Ball

Thick Shim
Standard

Hollow Ball
Thin Shim

Thick Shim
Thin Shim
Standard

Hollow Ball

REAR

When the rear upper control

5° 7.5° 10° 12.5° 15°

Caster

Outer Toe Link

End Setup

Tall Lower
Hollow Ball

Control Arm

Mounting Hole on

Front Bulkhead

Upper

Lower

Upper

Lower

Upper

Lower

Upper

Lower

Upper

Control Arm

Mounting Hole on

Rear Bulkhead

Upper

arms are mounted in the upper
of its two mounting holes in
the bulkhead (roll center), the
tall lower hollow ball should
be used.

Tall Center
Hollow Ball
(stock)

Lower

Rockers (Progressive Rate/ Suspension Travel)

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

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

A total of four different rocker arm sets are available for Revo. All rocker arms
except the Long Travel rocker arms will allow the wheel to travel a total of

12 • REVO PLATINUM EDITION

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TUNING ADJUSTMENTS

Rocker Arm Total Travel Progressive Rate

Progressive 1

Progressive 2

Progressive 3

Long Travel

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). The Long Travel rocker arm increases
total travel to 120mm. The progressive rate can be increased or 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 through the whole range of
suspension travel. These are best for extremely rough terrain that requires
maximum suspension articulation. Progressive 3 rockers use high progressive
rate that will improve high-speed cornering on smooth surfaces by providing
a firmer feel. 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.

Using rockers with lower progressive rate may require the use of stiffer
springs to maintain proper spring pre-load and ride height. The spring
pre-load adjuster on each shock is designed for minor adjustments. If the
adjuster needs to be turned all the way down (compressing the spring) in
order to maintain proper ride height, then the next stiffer spring should
be used.

The chart 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.

Ride Height Adjustment

The rocker arm suspension uses push rods on each suspension arm.
Changing the length and/or position of the push rod adjusts the
ride height without affecting or compromising other suspension
parameters. For example, you can raise and lower the ride height without
changing up/down travel distribution, changing springs, or affecting
your progressive rate. This feature is unique to Revo and is extremely
beneficial in a racing environment where you can achieve a low center
of gravity (by lowering the ride height) without losing any suspension
capability. Increasing the ride height will increase ground clearance for
rough terrain.

The ride height of the model can be
changed by mounting the push rod in
a different hole in the lower suspension
arm. From the factory, the push rod
comes installed in the center hole of
the lower suspension arm’s push rod
mount. If the push rod is mounted in the inner hole, the ride height of the
vehicle increases. If mounted in the outer hole, the ride height decreases.

The ride height can be finely tuned by adjusting the sag of the
suspension. Do not attempt to make large changes to the ride height
by adjusting the spring pre-load on the shock bodies. If suspension
sag is severe and requires a large increase of the spring pre-load to
compensate, then a firmer spring should be used. The lowest ride height

90mm

90mm

90mm

120mm

(60mm up / 30mm down)

(60mm up / 30mm down)

(60mm up / 30mm down)

(80mm up / 40mm down)

Increases

Ride Height

Low

Medium

High

Low

Decreases

Ride Height

can be achieved by installing the optional adjustable push rod in the
outermost hole of the lower suspension arm’s push rod mount. Turn the
rod ends all the way in until they stop (shortening the length).

The optional Long Travel rocker arms are designed to be used only with
the standard non-adjustable push rods installed in the hole labeled “LT”
(the middle hole of the lower suspension arm’s push rod mount). Any
minor adjustments to the ride height are accomplished by adjusting the
spring pre-load.

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.

Toe Adjustment

The wheels can be adjusted to point
straight ahead or have a toe-in or toe­out setting. To help you remember, look
down at your feet. For toe-in, your feet
point towards each other. For toe-out,
your feet point away from each other.

The toe angle of the front wheels can be
adjusted by varying the length of the toe
links that connect the steering linkage to
the front axle carriers. The toe angle of
the rear wheels can be adjusted by
varying the length of the metal toe links
that connect the rear bulkheads to the

Right Hand

(Normal) Threads

Increase

Length

rear axle carriers. The front toe links
and rear toe links are equipped with
turnbuckles. The lengths of the toe links
can be adjusted by turning them with the
included 7mm Traxxas wrench.

Left Hand

Threads

Decrease

Length

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

Under certain conditions, toe-in can be increased to a maximum of 3
degrees. To avoid potential interference of suspension components with
the long travel rockers installed, see the maximum alignment limits table
on page 13.

All of the toe links were
originally installed on the
truck so that the left hand
thread indicators point in the
same direction. This makes it
easier to remember which way
to turn the wrench to increase or decrease toe link length. Note that
a groove indicates the side of the Tube with the left-hand threads.

Groove indicates left-hand threads

Static Camber Adjustment

The wheels can be set to have either positive
or negative camber (see illustration, page 13).
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

REVO PLATINUM EDITION • 13

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TUNING ADJUSTMENTS

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 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

Maximum Alignment Limits (using stock push rod length)

Revo’s maximum toe and camber alignment settings can be limited
by the ride height setting. Do not exceed the maximum limits or you
could experience interference between suspension components. The
ride height is controlled by where the push rod is installed in the lower
suspension arm. First determine which of the following configurations
you are using:

a. Stock Configuration – When the pushrod is in the middle position of the

lower control arm.

b. Raised Configuration - When the pushrod is in the raised position to

increase the vehicle’s ride height (innermost hole in lower control arm).

c. Lowered Configuration - When the pushrod is in the lowered

position to decrease the vehicle’s ride height (outermost hole in
lower control arm).

d. Long Travel Configuration – When the pushrod is in the middle

position of the lower control arm with the Long Travel rockers installed.

Front Suspension

The following are suggested maximum settings for the front suspension
in order to avoid interference between suspension components:

Configuration

Available

Camber

(degrees)

Available Toe

(degrees)

Toe In Toe Out

Stock +3 to -5 3 3

Raised +3 to -1 1 1

Lowered +3 to -5 3 3

Long travel +3 to -1 1 1

Rear Suspension

The following are suggested maximum settings for the rear suspension
for all configurations. Toe out is not normally used on the rear of Revo.

Configuration

Available

Camber

(degrees)

Available Toe

(degrees)

Toe In Toe Out

All +3 to -5 3 2

Springs

The front and rear springs on Revo have different spring rates. The rear
springs are about 20% stiffer than the front springs. The spring’s pre­load tension can be adjusted by turning the spring pre-load adjuster.
Adjusting the pre-load changes the suspension sag. Suspension sag
basically defines how much the suspension compresses when the truck
is at rest. Adjust the pre-load so that the suspension compresses about
one third of its full suspension travel (see illustration). If suspension
sag is severe and requires a large increase of the spring pre-load to
compensate, then a firmer spring should be used. Firmer springs
(supplied) must be used when the Long Travel rocker arms are installed.

Use a stiffer spring to reduce
sag, reduce body lean, control
brake dive, and provide a firmer,
more responsive overall feel. If
Revo is lightened significantly,
softer springs will be necessary
to allow the suspension to sag
properly. Heavier configurations
will require stiffer springs.
Ride height is adjusted by
changing the length or position
of the push rods in the lower
suspension arms. See Ride Height
Adjustments on page 12. The suspension sag and spring pre-load should
be readjusted anytime the springs are removed and/or replaced.

Optional springs available from Traxxas are listed below. 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.

90mm Travel

Dot Color Spring Rate

Yellow
White
Orange

(Standard Front)

Green
Gold

(Standard Rear)

Tan
Black

14.8 lb/in (2.6 N/mm)

16.6 lb/in (2.9 N/mm)

18.3 lb/in (3.2 N/mm)

20.0 lb/in (3.5 N/mm)

21.7 lb/in (3.8 N/mm)

23.4 lb/in (4.1 N/mm)

25.1 lb/in (4.4 N/mm)

120mm Travel

Dot Color Spring Rate

Silver

(Standard Front)

Pink
Blue

(Standard Rear)

Purple

Note: 90mm Travel springs are

not recommended for use with
the Long Travel Rockers.

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)

SHOCK TUNING

Shock Pistons

The shock pistons are Variable Damping Pistons. The piston design greatly
enhances the tuning ability of the suspension. The key to the shock’s unique
operation is the flexible plate which seals two of the piston holes. When the
shock is compressed, full damping rate is delivered. While rebounding, this
new valve action allows additional bypass of shock fluid, speeding shock
response. The direction at which the shock responds faster depends on the
orientation of the piston and valve assembly. This is selectable by flipping
the piston assembly into the desired position as shown in the diagrams. For
off-road use, it is generally desirable for the shock to rebound faster than
compress, requiring the valve plate to be on the top of the piston (stock
position). The opposite is generally true for on-road use.

Stock

(Valve on top)

• Best for Off-Road

On Compression:

• Valve Closed

• Max Rate of
Compression

On Rebound:

• Valve Open

• Faster Response

Compression CompressionRebound Rebound

Flipped

(Valve on bottom)

• Best for On-Road

On Compression:

• Valve Open

• Faster
Compression

On Rebound:

• Valve Closed

• Slower Rebound

14 • REVO PLATINUM EDITION

TUNING ADJUSTMENTS

2

2

2

1

1

1

3

3

3

To further alter the characteristics of the variable

Shock piston hole sizes

rate, the diameter of the bypass holes may be fine
tuned by enlarging them - speeding even further
the rebound rate. Optional pistons with bypass

Piston 1:

1.10 mm

holes that are larger or smaller (1, 2, or 3) than
the factory installed stock pistons can be used to
decrease or increase damping respectively.

Piston 2:

1.00 mm

From the factory, the shocks are filled with
SAE-50W silicone oil. Only use 100% silicone oil
in the shock. The stock Revo is equipped with #2

Piston 3:

0.95 mm

pistons front and rear.

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.

Multi-tool Shock Functions

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

A. Tighten/Loosen Upper Cap

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

B. Tighten/Loosen Lower Cap

1. Replace the stock piston with desired

optional piston. Be careful not to lose
the thin steel valve or 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

C. Remove/Install Rod End

nut with the 4-way wrench to secure the
assembly. Only tighten the nut enough to

remove vertical “play” of the piston. Over
tightening the nut will deform the steel
valve and cause the shock to malfunction.
The piston should be free to rotate on the
shaft when tightened.

3. Insert the shock shaft assembly through the

Piston Installation/Removal

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.

87mm

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.

Stock shock center-

to-center distance

TRANSMISSION AND DIFFERENTIAL TUNING

Adjusting the Slipper Clutch

Your Revo is equipped with an adjustable
Torque-Control™ slipper clutch. The
slipper clutch is integrated into the
main spur gear on the transmission. The
slipper clutch is adjusted by loosening
the spring-loaded locknut on the slipper
shaft. Use the supplied 8mm open-end
metric wrench. To tighten or loosen the
slipper nut, insert the 2.0mm hex wrench
into the hole in the end of the slipper shaft. This locks the shaft for
adjustments. Turn the adjustment nut clockwise to tighten (less slippage)
and counter-clockwise to loosen (more slippage). The slipper clutch has
two functions:

1. Limiting the engine’s torque output to the wheels to prevent

wheelspin on low traction surfaces and help to prevent damage
to the gears in the transmission during on-throttle landings.

2. Protecting the drivetrain from sudden impact or shock loads (such as

landing from a jump with the engine at full throttle).

From the factory the slipper clutch is set for minimal slippage, just
enough to protect the drivetrain from shock loads. On slippery, low
traction surfaces such as a hard-packed, dry racetrack you may benefit
from loosening the slipper adjustment nut to allow for more clutch
slippage. This will make the truck easier and more forgiving to drive
by helping to reduce the amount of wheel spin. Loosening the slipper
adjustment can also improve performance on extreme high traction
surfaces by preventing the front end from lifting off of the ground when
accelerating. Make slipper adjustments in small 1/8 turn increments.

The maximum tight setting for the slipper is just at the point where
there is little or no tire slippage on a high traction surface such as carpet
or a prepared racetrack. The slipper should not be tightened to the point
that clutch slippage is completely eliminated. Do not overtighten the
slipper nut or you could damage the slipper bearings, pressure plates, or
other components.

REVO PLATINUM EDITION • 15

TUNING ADJUSTMENTS

Adjusting the Two-Speed Transmission

Revo comes equipped with an adjustable two-speed transmission. When
the shift point on the transmission is adjusted correctly, it will maximize
acceleration and improve driveability. Use a 2mm hex wrench to adjust the
shift point. To make the adjustment, the engine must be off (not running).

1. Remove the rubber access plug from
the top of the transmission housing.

2. While looking through the opening,
rotate the spur gear to align the cutout
(notch) on the internal two-speed clutch
drum with the opening.

3. Hold the spur gear and slowly roll the
truck forward until the hex on the black
adjustment set screw becomes visible in
the opening. Note: the truck will only roll
forward (not backwards) when the spur gear
is held stationary.

4. Insert the 2.0mm hex wrench through the
clutch drum and into the adjustment screw.

5. Turn the adjustment screw 1/8 turn
counter clockwise to lower the shift point
(shifts sooner). Be careful not to loosen the
adjustment screw too much or you may cause
the screw and spring to fall out (requiring
major disassembly and repair). Turn the
adjustment screw clockwise for later shifts.

6. Reinstall the rubber access plug to prevent
dirt from entering the transmission. Do

Shift

Sooner

not put oil or other lubricants into the
transmission through the two-speed
adjustment access.

7. Check performance by running a test lap after each adjustment. On a
small race track with many tight turns, try setting the shift point later
so that the truck only shifts into second gear on the main straightaway.
This will prevent an unexpected shift in the middle of a turn. On larger
tracks it may be necessary to allow earlier shifts for increased speed.

Adjusting the Spur Gear/Clutch Bell Gear Mesh

The ideal spur gear/clutch bell gear mesh for
Revo is 0.1mm. To set the gear mesh, place
a strip of standard letter/A4 size copy or
printer paper (about 0.1mm thick) between
the mating teeth. Loosen the two horizontal
engine mount screws and slide the engine
mount up to push the clutch bell gear against
the spur gear so that the that the paper is not
too tight to pull out or too loose that it will fall
out. Tighten the two horizontal engine mount
screws securely. When the paper is removed,
you should feel only the slightest amount of
play between the gears (almost none) and
there should be no binding or friction.

Changing the Spur Gear

1. Remove the four cap head screws that
secure the engine to the engine mount.

2. Remove the button head screw that
secures the pipe hanger to the rear body
mount (see inset).

3. Carefully remove the engine and exhaust
system from the spur gear area to allow
enough room to remove the spur gear.

4. Remove the three screws on the slipper clutch
assembly using a 2.5mm hex wrench. Slide the
spur gear off of the slipper shaft. If the spur gear
is too tight on the shaft, gently pry on the back
of the gear with a flat screw driver to loosen it.

Repeat the above steps in reverse order to install

the new spur gear.

Adjusting the Gear Ratio

The gear ratio on Revo can be adjusted for different conditions that may
require either increased acceleration or increased top speed. Adjusting the
gear ratio is accomplished by changing the clutch bell on the engine and/
or the spur gear (slipper clutch gear) on the transmission. From the factory,
Revo is equipped with a 15-tooth clutch bell and a 38-tooth spur gear. This
combination will provide a good balance of acceleration and top speed.
Optional spur gears and clutch bell gears are listed on your parts list. Refer
to the gear ratio chart for possible gearing combinations.

Adjusting the Two-Speed Ratios

Revo is equipped to allow adjustment to the two-speed by installing
optional standard and wide-ratio gearsets. This requires transmission
removal and disassembly (see www.Traxxas.com for detailed instructions).
The standard ratio gearsets will increase top speed slightly. The optional
wide-ratio gear set can also be installed in the Revo. The additional
horsepower and torque output of the TRX 3.3 engine provides seamless
shifting even with the larger gap between first and second gears. The gear
ratio chart shows the available combinations with optional spur gears,
clutch bells, and two-speed gear sets.

Gear Ratio Chart

With 14T Clutch Bell

2nd gear sets Gear 36 38 40

17T/39T 1st 24.21 25.55 26.90

(Standard)

16T/40T 1st 24.21 25.55 26.90

(Close)

18T/38T 1st 24.21 25.55 26.90

(Wide)

With 15T Clutch Bell (standard)

2nd gear sets Gear 36 38 40

17T/39T 1st 22.59 23.85 25.10

(Standard)

16T/40T 1st 22.59 23.85

(Close)

18T/38T 1st 22.59 23.85 25.10

(Wide)

With 16T Clutch Bell

2nd gear sets Gear 36 38 40

17T/39T 1st 21.18 22.36 23.54

(Standard)

16T/40T 1st 21.18 22.36 23.54

(Close)

18T/38T 1st 21.18 22.36 23.54

(Wide)

With 17T Clutch Bell

2nd gear sets Gear 36 38 40

17T/39T 1st 19.94 21.04 22.15

(Standard)

16T/40T 1st 19.94 21.04 22.15

(Close)

18T/38T 1st 19.94 21.04 22.15

(Wide)

*stock configuration out of the box

# of Spur Gear Teeth

2nd 16.79 17.72 18.66

2nd 18.30 19.31 20.33

2nd 15.45 16.31 17.17

# of Spur Gear Teeth

2nd 15.67 16.54 17.41

2nd 17.08 18.03

2nd 14.42 15.22 16.02

# of Spur Gear Teeth

2nd 14.69 15.51 16.32

2nd 16.01 16.90 17.79

2nd 13.52 14.27 15.02

# of Spur Gear Teeth

2nd 13.83 14.60 15.36

2nd 15.07 15.90 16.74

2nd 12.72 13.43 14.14

*

*

25.10

18.97

16 • REVO PLATINUM EDITION

TUNING ADJUSTMENTS

Tuning The Sealed Gear Differentials

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

The performance of the front and rear differentials can be tuned
for different driving conditions and performance requirements. The
differentials are filled with silicone differential fluid (oil) and are sealed
to maintain consistent long-term performance. Changing the oil in
the differentials 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. Revo 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, the front differential is filled with SAE 50,000W oil and
the rear differential is filled with 10,000W oil. The center differential is filled
with SAE 500,000W oil. For the best center differential performance, only
use the 500,000W diff fluid. This viscosity provides the best balance for
acceleration and handling. Power will be more equally distributed to the
front and rear differentials. Lighter viscosity center diff fluid may increase
the tendency for the front tires to be over-driven (spin faster than the rear
tires). Over-driving the front tires will reduce handling and acceleration
authority. Only use silicone differential fluid (oil) in the differentials. Traxxas
sells a range of oil viscosities (see your parts list). The differentials have to
be removed from the vehicle and disassembled to change/replace oil.

DUAL SERVO STEERING SYSTEM

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

Adjusting The Steering System

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

2. Adjust both the steering links to be the exact same length (41.8mm -
use “Steering Servo Horn Link Length Template” below to set length).

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

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

5. Connect one end of a steering link to the steering servo saver arm and

the other end to the servo horn

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

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

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

If necessary, fine-tune the length of the second steering link to eliminate
any load on the steering system in the neutral position.

41.8 mm

Steering Link Length Template

If you are using aftermarket servos, it is important to use servo horns
designed for Revo. Optional steering servo horns are sold separately for use
with non-Traxxas servos.

Servo Saver Tuning

An optional stiffer spring is available for the servo saver when using servos
with metal gear sets (see parts list for details). Do not use this spring with
standard Traxxas high-torque servos.

BRAKE SETUP & ADJUSTMENT

Revo is equipped with front and rear disc brakes. The brakes are preset at
the factory and should not require attention. As the brake material wears,
future adjustments may be necessary.

Brake Shoulder Screw Adjustment

The two shoulder bolts that are
used to secure the brake pads to the
transmission housing may need to
be adjusted periodically as the brake
material wears down. They should be
tightened so a 0.50mm (.020”) gap
exists between the disk and the brake pad (on the transmission side).
Adjust in one of the following ways:

1. Use a .50mm feeler gauge between the brake pad insert and brake disk.

2. Push the outer brake pad firmly against the inner pad with your finger,

sandwiching the brake disk between the brake calipers. Tighten the
brake shoulder bolts until they just barely touch the brake pads. Do not
over tighten these fasteners or you could damage the brake calipers.
Loosen each of the shoulder bolts by 1 turn.

Brake Linkage Adjustment

When correctly adjusted, the brake linkage
spring should barely touch the rod guide
when the servo is in neutral position (closed
throttle). This will ensure no brake drag
during operation of the vehicle. The brake
adjustment knob can be threaded away
from the spring for less braking power
if desired. Do not adjust knob to apply
pressure against the spring while the
servo is in the neutral position. This will
induce brake drag and cause undesirable
handling.

The position of the z-bend from the
factory is the middle position of the servo
horn for the front brakes and in the rear
position for the rear brakes. Changing this
position will affect the way the brake force
is applied. The brake adjustment knob will need to be readjusted if this
position is changed.

Brake

Linkage

Spring

Front of Truck

0.5mm
gap

Less Brake

REVO PLATINUM EDITION • 17

TUNING ADJUSTMENTS

Brake Set-up Tips

• All four wheels should lock at the same time. This is the base setting
for the brake system. If the brakes do not engage simultaneously, then
thread the adjustment wheels in toward the brake levers until they
actuate the brakes when pushing the transmitter trigger forward.

• Front brake bias - Setting the front brakes to engage before the rear
brakes will create a slight push while entering a corner.

• Rear brake bias - Setting the rear brakes to engage before the front
brakes will cause the truck to oversteer when entering a corner.

• Use different brake bias settings to tailor the handling characteristics of
the truck to suit your driving style in different conditions.

• The dual rear brake is intended for off-road use. It is not intended for
repeated brake application on concrete or pavement.

Brake Pad Wear and Replacement

During normal use the brake pads should wear at a relatively slow rate.
However, if the brake pads wear down close to the metal pad holders, they
should be replaced. Any more wear than this could cause damage to the
brake parts and improper operation of the brake system.

SWAY BAR SETTINGS AND ADJUSTMENTS

• The sway bar set includes two different front and
rear sway bars. The thicker of the two (black) is
stiffer and will further reduce body roll in cornering.

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

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

For smooth surfaces with high traction:

• Use black front and rear sway bars. Adjust linkage placement for stiffer
response (lower on sway bar).

For rough surfaces with low traction:

• Use silver front and rear sway bars. Adjust linkage placement for softer
response (higher on sway bar).

To reduce understeer (pushing in corners):

• Use silver front sway bar. Adjust front linkage placement for softer
response (higher on sway bar).

• Use black rear sway bars. Adjust linkage placement for stiffer response
(lower on sway bar).

To reduce oversteer (loose in corners):

• Use black front sway bars. Adjust linkage placement for stiffer response
(lower on sway bar).

• Use silver rear sway bar. Adjust front linkage placement for softer
response (higher on sway bar).

Softer

Stiffer

WING ADJUSTMENT

The wing mount can be adjusted for both height and deflection angle.

• The two top holes set the wing height. Using the
upper hole will lower the level of the wing by
approximately 3/8 inches.

• The lower three holes adjust the angle of wing
incidence. By using the rear hole, wing down
force will be maximized by adding negative wing
deflection. For less deflection, the front holes can
be used to fine tune the amount of down force
needed for your track conditions.

18 • REVO PLATINUM EDITION

INDEX

Address 3
Air lter 6
Alignment; See Suspension and Alignment

maximum limits 13

Antenna crimp nut 4
Antenna tube 4
Brake 16

linkage adjustment 16
pads 17
set-up 17
shoulder screw adjustment 16

Charging jack 4
Clutch bell 15
Decals 5
Differentials 16–17
Engine (TRX 3.3 Racing Engine) 6

break-in 7–9

cold weather 9

tuning 9–10

by temperature 10
fine-tuning the carburetor 10

Equipment 3
Factory needle settings 8
Fuel 6

handling 7
nitro percentage 6

Glow plug 7

igniter (glow driver) 6

High-Speed Fuel Mixture Adjustment 9
Idle Speed Adjustment 10
Low-Speed Fuel Mixture Adjustment 10
Painting 5
Receiver 3, 4

antenna 4
battery; See RX Power Pack

RX Power Pack 4

care 4

Safety 3
Servos

steering 4, 16
throttle 4

Shocks 13

assembly 14
disassembly 14
pistons 13

Slipper clutch 14

Springs 13
Spur gear

changing 15
mesh 15

Starter box 3, 6, 8
Steering 16
Supplies 3
Support 2
Suspension and Alignment 11–12

bump steer 11

elimination 11

camber 12

base factory settings 13
negative 13
positive 13

caster adjustment 11
caster angle 11
pivot ball caps 12
ride height 12
rockers 11
roll center 11
toe 12

base factory settings 12

Sway bar 17
Tire gluing 5
Tools 3
Transmission 14–15

adjusting the two-speed 15
gear ratio 15
two-speed ratio 15

Tuning adjustments 11
Wing adjustment 17

REVO PLATINUM EDITION • 19

NOTES

080312 KC1126

1100 Klein Road, Plano Texas 75074

1-888-TRAXXAS