XTM Racing Baja Bullet User manual

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For more cool and exciting XTM Racing products, visit our website at http://xtm.globalhobby.com
ThankyouforpurchasingtheXTMRacingBajaBulletRTR2WDelectrictruck. TheseOperatingInstructionsareprovided
tohelpyou enjoyyournew BajaBulletwithout anyofthe hasslesyoumight expect. Pleasereadthrough allofthe literature
that is provided with your truck. Doing so will help you become familiar with how your truck and radio system operate.
IMPORTANT
Before running your new truck, please read and understand the warnings listed on the next page. Failure to do so could lead to bodily
harm and/or injury. The XTM Racing Baja Bullet RTR 2WD electric truck is not intended for those under 12 years of age, unless
closely supervised by an adult.
XTM Racing products aredistributed exclusively by Global Hobby Distributors 18480 Bandilier Circle, Fountain Valley, CA 92728
All contents copyright © 2002, Global Hobby Distributors Version V2.0 March 2002
Baja Bullet Truck Features:
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●Built and Ready-to-Run
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●Electronic Speed Control
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●Full Ball Bearing Set
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●Painted Body with Decals
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●Powerful 21 Turn Motor
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●2 Channel Radio System Preinstalled
OPERATING INSTRUCTIONS
OPERATING INSTRUCTIONS
Baja Bullet ESC Features:
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●Forward, Brake & Reverse
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●Micro Processor Control
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●Input Voltage: 6V - 12V
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●Frequency: 3Khz
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●Continuous Current: 20Amps
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●BEC Cutoff: 5V/2Amps
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●Temperature Cutoff: 80º Celsius
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●Weight: 2.4 Ounces

2Need help or have any questions? Call us at 1-714-963-0329 or send us an email at [e-mail]
FOR YOUR SAFETY - PLEASE READ THESE WARNINGS!
GENERAL TRUCK WARNINGS
●Under no circumstances should you operate your model in
crowds of people. Serious injury could result.
●Never operate your model on busy streets or if there are cars
around. Never drive your model at night, either.
●Do not use your model to chase pets or other animals.
●The radio system included in your model is not waterproof.
Therefore, do not drive through water, wet grass, mud or snow.
●Because your model is operated by radio control, it is impor-
tanttomakesureyouarealwaysusingfreshand/orfullycharged
batteries. Never allow the batteries to run low or you could
lose control of the model.
●If your model becomes stuck, release the trigger to turn the
motor off, then retrieve your model by hand.
●Topreventexcessiver.p.m.'sfromdamagingthemotorand/or
drive-train components we suggest reducing throttle while in
the air during jumps.
●If you are testing the motor, be careful not to touch the drive
shafts, wheels or any other moving parts. Serious injury could
result.
●R/C models produce vibration when they are running. It is
important to periodically check the chassis mounting screws
andfasteners. Operatingthetruckwithloosescrewsorfasteners
can lead to severe motor and/or chassis damage.
●Because the chassis is assembled from molded nylon and
plasticparts,useofchemicalspraycleanersisnotrecommended.
These cleaners may damage the parts.
If you should have any trouble with any of the steps listed in these Operating Instructions, we have provided a Troubleshooting Guide
beginning on page # 13. The troubleshooting guide is provided to help you find a quick and immediate resolution to any number of
problems that might occur. If you cannot solve a problem using the troubleshooter, or if you have any other questions or concerns,
please contact us below:
XTM Racing Customer Service
18480 Bandilier Circle
Fountain Valley CA 92728
Phone [phone]
Fax [phone]
Email: [e-mail]
http://xtm.globalhobby.com
For Your Information
BATTERY WARNINGS
●Always follow the directions provided with your battery
charger to charge the motor battery.
●Periodicallycheckthemotorbatteryforexcessive heatbuild-
up during charging. If the battery is hot to the touch, remove it
from the charger and let it cool. Never leave the motor battery
unattended while charging.
●Topreventthemotorbattery fromoverheatingduringcharge,
always allow the battery to completely cool before recharging.
●Never over-charge the motor battery or serious damage to
the battery and/or user could result
RADIO SYSTEM WARNINGS
●When turning on the truck, always turn on the radio
transmitter before turning on the truck.
●When turning off the truck, always turn off the truck before
turning off the radio transmitter.
●Always unplug the motor battery when not using the truck.
●Never cut the receiver antenna shorter or you could lose
control of the truck.
●When operating the truck, make sure the transmitter antenna
is completely extended.
●Do not use a motor battery that has more than 7 cells or the
ESC will be damaged.
Replacement Parts
Eventually you may need to purchase replacement parts for your truck. For your convenience, we have listed beginning on page # 14 the
replacement parts that are available for purchase. When you need to purchase any parts, please call us at the phone number listed above.

3
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Section 1: Our Recommendations
Thissectionliststheitemsyou will need to runandmaintainyournewXTMBaja Bullet RTR electric truck. Asyoucansee,there'snot
much to it!
●Trinity Amp Max II 1500Mah Battery Pack - Part # 842006
●Promax Black Widow AC/DC Peak Charger - Part # 350360
●Trinity "8 Pack" AA Alkaline batteries for the transmitter - Part # 837801
●Emerald Performance Plus 3 to clean the motor - Part # 340186
●Adjustable wrench and # 2 phillips head screwdriver to make chassis adjustments
●7mm socket wrench to make slipper-clutch adjustments
Section 2: Becoming Familiar with Your Baja Bullet RTR Electric Truck
Each radio system comes with crystals and stickers on the back of the transmitter and on the receiver showing which frequency the
radio operates on (either in the 27Mhz or 75Mhz band). No two radio systems can operate nearby each other if they are on the same
frequency. You canpurchasetransmitterand receiver crystalsseparatelyandchange them ifyouplanon running yourtruckwithother
people. Listed below are the frequencies available for your radio system.
Channel # Frequency Hitec Part # (tx/rx)
67427xx/66427xx
01 16.995
02 27.045
03 27.095
04 27.145
05 27.195
06 27.255
61 75.410
90 75.990
Through 67475xx/66475xx
Notethat"xx"istheactualchannelnumberyouwant
to purchase.
27Mhz
75Mhz
Battery Cover: This cover houses the 8 AAAlkaline batteries that power the transmitter.
Crystal: This is the frequency crystal of the transmitter. You can change crystals in both the transmitter and the receiver (in the truck)
so that you and your friends can drive at the same time. No two radio systems nearby can be on the same frequency.
On/Off Switch: Turns the transmitter on and off. Two L.E.D.s show the power of the batteries.
Servo Reversing Switches: Allow you to quickly and easily switch the direction the servos rotate by just flipping the switches on
the top of the transmitter.
Steering Wheel: Controls the trucks steering. Turn the wheel to the right and the truck turns right. Turn the wheel to the left and the
truck turns left.
Throttle/Reverse Trigger: Controls the forward and reverse speed of your truck. Pull the trigger to accelerate forward, release the
trigger to decelerate and push the trigger to go into reverse.
Trim Levers: Theselevers,onefor steeringandonefor throttle/reversecontrol,allow youtofinetune theservo'scenter byslidingthe
levers on the transmitter.

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Antenna: Athin wire connected to the receiver. The antenna receives the signal from the transmitter.
Battery Holder: The battery holder holds the motor battery securely in place.
Body Post: The body is held to the chassis using three body posts. The front two body posts are adjustable so you can adjust the
height of the body on the chassis.
Bumper: The bumper is molded from high-impact plastic to provide excellent dampening in case of a front-end crash.
Chassis Tub: The basic structure of the truck. All of the sub-assemblies are bolted to the chassis.
Electronic Speed Control: Commonly referred to as the ESC, it is a solid state device that takes power from the battery pack and
the signal from the receiver and converts them into proportional power for the motor.
Motor: The Baja Bullet uses a powerful 21 turn electric motor for good speed and torque "out of the box."
Receiver: The receiver picks up the signals from the transmitter and sends those signals to the ESC and the steering servo.
Shock: The shocks used on the Baja Bullet are oil-filled and use a spring that is well-suited for most off-road conditions. The shocks
can be easily tuned for different driving conditions.
Steering Servo: This servo controls the truck's steering. A "servo saver" is installed to help prevent the servo gears from being
stripped out.
Tie-Rod: The tie-rod connects between the steering linkage and the castor block. The tie-rods are adjustable so you can make toe
angle adjustments.
Transmission: An assembly of gears and other parts that supply power from the motor to the drive axles and wheels.
Wheel/TireAssembly: The Baja Bullet includes molded rubber tires with a tread pattern that is good for most off-road applications.
The wheels are molded from high-impact plastic for strength.

5
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Section 3: Preparing to Run Your Baja Bullet Electric Truck
Now that you are familiar with the major component parts of your truck, and with the functions of the Hitec Lynx Sport transmitter, it's
time to prepare your model for its first run.
Let's Get Started:
❑Push the antenna down into the molded hole in the top of the
transmitter.
❑Thread the antenna (clockwise) into place and tighten it gently
until is stops.
❑Remove the plastic battery cover.
❑Install 8 AA Alkaline batteries into the battery tray, making
sure that the polarity is correct.
❑Reinstall the battery cover.
❑Carefully insert the end of the antenna wire into one end of the
plastic antenna tube.
❑Slide the antenna through the tube and out the other end.
Note: If you find it hard to slide the antenna through the tube,
apply a light coat of Windex®to the antenna to make it slide easier.

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❑Push the end of the plastic tube firmly into the molded hole in
the chassis.
Note: Leavetheexcessantennahangingfromthetop of the tube.
Under no circumstances should you cut or shorten the antenna.
❑Remove the two clips from the battery mounting posts, then
remove the mount itself.
❑Slide the battery into the molded slot in the chassis.
WARNING
Do not plug the battery into the ESC yet.
❑Charge the motor battery using yourAC/DC peak charger.
Note: When you buy new battery packs, they do not come fully charged. They must be charged before they're first used.
❑Slide the battery back as far as it will go in the slot, then push
the front of the battery down completely.
❑Reinstall the battery mount and clips to hold the battery firmly
in place.
IMPORTANT
Makesurethetab on thefrontofthe battery mountistowardthe top
of the battery as shown.

7
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❑Slide the transmitter's on/off switch to turn on the transmitter.
The green LED should glow brightly.
Note: Ifthegreen LEDdoesnot gloworif theredLED isglowing,
check the batteries and replace them if necessary.
IMPORTANT
To prevent a runaway vehicle, always turn on the transmitter before
plugging the battery pack into the ESC.
Note: Before plugging the battery into the ESC, double-check that
the truck's switch is in the "off" position.
❑Plug the connector on the battery into the matching connector
on the ESC.
❑Slide the truck's on/off switch to turn on the truck. The red and
greenLEDson theESCwillflashthenonlythe greenLEDwill stay
lit. The ESC is now ready to use.
IMPORTANT
Whenyou'redonedriving, alwaysunplugthebattery fromtheESC.
Section 4: Checking the Controls
Topreventanychance of arunawaymodel,theradiosystem should be rangecheckedbeforethefirst run of thedayand/oraftera crash.
To range check the radio system, do the following:
❑Plug in the battery pack into the ESC, turn on the transmitter, then turn on the truck.
❑Extend the transmitter antenna completely.
❑With the truck on the ground walk away from the truck about 150 feet. Move the steering wheel while looking at the truck's
wheels. The wheels should pivot smoothly back and forth as you rotate the steering wheel back and forth.
☞If the radio system does not operate properly, please refer to the troubleshooting guide on page # 13 before going further.
WARNING
Neverattemptto operateyourmodelif theradiocontrolsystem isnotfunctioningproperly. Doing socouldbe harmfultoothersaround
you and/or to your model.
Range Checking the Radio System

8Need help or have any questions? Call us at 1-714-963-0329 or send us an email at [e-mail]
❑With the both the transmitter and the truck turned on, rotate the
transmitter'ssteeringwheel forward (totheright). Thefront wheels
on the truck should turn right.
☞If they don't, flip the steering servo reversing switch on the
top of the transmitter to change the direction.
❑Rotatethetransmitter'ssteeringwheelbackward(totheleft). The
front wheels on the truck should turn left. Let go of the steering
wheel. The truck's wheels should return to center.
☞If the wheels do not point straight ahead (center) after you
return the steering wheel to center, move the steering trim lever on
thetransmitterto adjust thewheelssothat theypointstraightahead.
❑Whileholdingthechassisofftheground,pullbackonthethrottle
trigger. The rear wheels should spin counter-clockwise as shown.
☞Ifthewheels don'tspincounter-clockwisewhenyou pullback
on the trigger, flip the throttle servo reversing switch on the top of
the transmitter to change the direction.
❑Release the trigger and the wheels should stop spinning.
Checking the Steering Controls
Checking the Throttle Controls

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❑While holding the chassis off the ground, push forward on the
throttle trigger. The rear wheels should spin clockwise as shown.
❑Release the trigger and the wheels should stop spinning.
Section 5: Electronic Speed Control
The ESC included in your Baja Bullet truck does not require any programming or setup. This is done for you automatically when you
turn on the transmitter and the truck. Listed below is some information you may find useful about the ESC:
●The ESC includes a brake and reverse function. When you let go of the throttle trigger, the truck will coast. When you push the
throttletrigger, thetruckwillbrake. Whenyou push thethrottletriggerall the wayforward,thetruckwill gointoreverse. Notethatthe
truck will not instantly go into reverse if it's moving forward. It will brake first, then go into reverse. This saves wear on the motor and
drivetrain.
●The ESC includes signal and temperature protection circuitry. The ESC will not work if there is a problem with the signal or a low
battery. In this case the red and green LEDs will flash. To reset the ESC, turn the ESC off and on again - you may need to recharge the
battery first. If the ESC has overheated, it will stop and the red and green LEDs will light continuously. The ESC will resume use
automatically after the ESC's temperature has dropped lower than 80º - 90º Celsius.
❑Using a pair of scissors cut out each decal along its outer edges.
❑Carefully adhere the decals to the body using the photos on the box cover to position them.
Section 6: Installing the Body
❑Doublecheckthatnopartsofthebody
touch the tires or suspension arms. If any
parts are touching, remove the body and
use a pair of scissors to trim the body to
clear any obstructions.
Note: There is a predrilled hole in the
topofthebodyfortheantennatubetoexit.
❑The body height can be adjusted by
removing the screws holding the body
posts in place, readjusting the height of
the posts, then reinstalling the screws.
☞Make sure to leave enough clearance
for shock travel.
❑Place the body onto the chassis, mak-
ing sure the three predrilled holes in the
body slide over the three body posts.
❑Secure the body in place using three
metal body clips.

10 Need help or have any questions? Call us at 1-714-963-0329 or send us an email at [e-mail]
Chassis alignment and geometry are important if you want your truck to perform well. A good performing truck means a truck that is
easier to drive, too. Follow our guidelines in this section to get the most out of your truck.
☞It's very important when making changes to the settings of your truck that you make the settings the same for each side. For
example, if you change the camber angle on the right front tire, you must change the camber angle of the left front tire the same
amount. If you change the spring tension on the left front shock, you must change the spring tension on the right front shock the
same amount, and so on.
☞Do not make any changes that are more than 3 degrees from the initial settings listed or the handling characteristics of your truck
will become very poor.
Adjusting the Camber
Camber changes the amount of the tire's surface that contacts the ground. Tires that are exactly perpendicular to ground have 0 degrees
ofcamber. If the tops of thetiresleantowardeachother,thetireshavenegativecamber. If thetopsofthetiresleanoutawayfrom each
other, the tires have positive camber.
Recommended Initial Settings:
For driving on smooth surfaces set both the front and back wheels at 0 degrees.
For driving on rough surfaces set the front wheels at -1 degrees and the back wheels at -2 degrees.
☞Camber settings should be measured with the truck at its normal ride height.
☞For more precise camber adjustments, use the R.P.M. Precision Camber Gauge (P/N 708099).
Negative Camber Positive Camber
☞Adjust the camber by turning the upper
turnbuckles using an adjustable wrench.
(Camber angles exaggerated for photo clarity)
Section 7: Making Chassis Adjustments
Adjusting the Toe Angle
Thetoeangle istheangleofboth fronttirestoeach other-whenviewed fromabove. Toe-in(both tirespointingtowardeachother)will
make your truck more stable and it will track straighter. Toe-out (both tires pointing away from each other) will make your truck turn
quicker, but it will be less stable.
Recommended Initial Settings:
1 - 2 degrees toe-in to add stability.
☞Adding3degreesormoreoftoe-in will result in excessive lossofspeedanddifficulty
steering the truck. Adjust the toe-in by turning the tie-rods with an adjustable wrench.
☞For more precise toe-in adjustments, use the R.P.M. Toe-in Gauge (P/N 708049).