Losi LOSB0102 User Manual

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LOSB0102 1/10th Desert Truck RTR

Not responsible for errors. All prices subject to
change without notice.
Losi, a Division of Horizon Hobby, Inc.

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Table of Contents

Introduction

Introduction .................................................................................................2

Safety Precautions: .....................................................................................3

Supplied and Required Equipment .....................................................4

Battery/Charging ........................................................................................5

Technical Overview ...............................................................................6–8

ESC Overview/Requirements .................................................................9

Transmitter Battery Installation ...........................................................10

Vehicle Battery Installation ...................................................................11

Quick Start ..................................................................................................12

Losi DSM Radio System ..........................................................................13

Driving the Desert Truck ........................................................................15

Tuning, Adjusting and Maintaining the Desert Truck .................16

Troubleshooting your Desert Truck ...................................................20

Warranty Information .............................................................................21

RC Terminology .........................................................................................22

Parts Listing ................................................................................................24

Optional parts Listing .............................................................................26

Exploded Views .........................................................................................27

Thank you for purchasing the Losi™ Desert Truck. We are
confident you will be satisfied with the performance in this
durable and resilient vehicle.

Understanding that you are anxiously wanting to get your
Desert Truck ready for the open road, it will be to your long
term benefit to make the effort and read through the entire
manual. In the following pages you will find all the information
you will need to set up as well as operate your new Desert Truck
to its full potential.

If you are an experienced RC hobbyist, or new to RC vehicles,
it will benefit you to read all enclosed information.

From everyone at Losi we would like to thank you again for
choosing the Desert Truck. Our goal is helping people have fun
and enjoy using our products.

Register your Losi Product Online

Register your Desert Truck now and be the first to find out
about the latest options parts, product updates and more.
Log on to www.LOSI.com and follow the product registration
link to stay connected.

Losi/Horizon Support

If you have any questions concerning setup or operation of
your Desert Truck RC please call Horizon Customer Support at
1-877-504-0233.

Hours:
Monday thru Friday from 8:00am CST to 5:00pm CST

You are welcome to call us with any support issue, or question
you may have about the Desert Truck.

Getting Ready

Thoroughly read all the enclosed material, precautions and
follow instructions to avoid damaging your new RC vehicle. If
you choose to not follow these steps or instructions, it will be
considered negligence.

If after review of this manual and prior to running your Desert
Truck, you determine this RC vehicle is not what you want—DO
NOT proceed and DO NOT run the Desert Truck. If the Desert
Truck has been run, your local hobby shop will not be able to
process a return or accept it for exchange.

Caution:

THIS PRODUCT IS NOT A TOY. This product is not intended for
use by children without direct adult supervision.

When driving the Desert Truck it is important that you take
measures to avoid someone being hit by the vehicle. You may
cause serious injury to another person, or to personal property
should you make contact while running the Desert Truck.

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Safety Precautions

We hope you operate this RC model in a safe, reasonable
and cautious fashion so it leads to your enjoyment and
fun with this vehicle. Should you operate this vehicle
without a cautious and reasonable approach it may result
in serious injury and/or property damage. Only you can control
and make certain that safety precautions and instructions are
followed.

General:

• The Desert Truck is not a toy. This product is not intended
for use by children without direct adult supervision.

• This RC Vehicle is not intended for use on public highways
or roads.

• Avoid an area that has many pedestrians or crowds
of people.

• Keep in mind that this vehicle is radio controlled and
can experience moments of radio loss or interference, so
provide for a margin of error at all times.

• Please be aware that the motor and batteries of this
RC vehicle will get HOT during each use. Be careful not
to burn yourself.

Electronic Speed Control (ESC):

• Read all safety precautions prior to each use.

• Never leave the vehicle/ESC unsupervised while it is
switched on, in use or connected to a power source. If
there is a short-circuit or product defect, it could result in
fire.

• If there are exposed wires, do not use the ESC until you
have installed shrink-wrap or replaced the wire.

• Disconnect the battery from the ESC after use.

• The ESC is not water proof and should not be exposed
to moisture.

• Do not attempt to use 3-cell LiPo or 7-cells NiMH; doing so
will damage the ESC and could result in fire.

• Always turn on the transmitter first then the ESC to
prevent an out-of-control vehicle.

• When setting your Electronic Speed Controller:

º Please disconnect motor or remove the pinion gear

during ESC setup or calibration functions.

º Keep loose clothing, hair, gloves and fingers away

from moving parts at all times.

º Rubber tires can cause severe injury if there is a

failure while running the vehicle while on a stand or
when being held. Ensure rubber tires are securely
mounted to the rims and if not, re-glue them and
check them often for security.

Batteries and Charging:

The Desert Truck uses rechargeable batteries such as NiMH.
These batteries all have special requirements to preserve
performance and last a long time. Read all instructions and
precautions that are provided with the batteries intended to
be used in the Desert Truck.

• Read all instructions provided by the manufacturer
of the batteries.

• Responsible adult supervision is necessary while
charging batteries.

• Always check to ensure the polarity of battery
connection is correct.

• Never leave batteries unattended while charging.

• Never charge a battery while it is installed in the Desert
Truck.

• Do not charge any battery that appears to have
any damage.

• If there are exposed wires do not charge or use the
battery until you have installed shrink-wrap or replaced
the complete wire.

When charging NiMH batteries, select a charger to meet
your requirements. Chargers can be of two primary types
for their source of power; a 100-240V wall charger, or one
which requires a 12V power supply. Follow the charger
manufacturer’s instructions and precautions during each use.

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Supplied and Required Equipment

Supplied tools:

2-Way wrench
Transmitter / Receiver BIND Plug

Four (4) Hex Wrench “L” shaped
.050, 1/16, 5/64, and 3/32

Flat Turnbuckle Wrench

Recommended Accessories:

- Hobby grade knife

- CA glue (LOSA7880 or LOSA7881)

- Needle nose pliers

- Side cutting pliers

- Double sided tape (LOSA4004)

- Safety Goggles

- Soldering iron

NiMH battery charger with automatic “peak detection”

recommended.

DYN4044 Vision Peak 2 AC/DC Charger

Using your charger:

If you do not yet have a charger a peak-detecting charger
will provide the performance required and take care of your
expensive batteries.

A popular choice for a charger would be a peak detection
charger that can be plugged into a household A/C wall socket.
The peak detection portion of the charger monitors the battery
charging and will automatically shut off upon full charge.

The other choice of peak detection charger requires a 12V
power source to charge your batteries. You would need to use
or purchase a hobby grade 12V power supply before charging.

Required Equipment:

 Four (4) AA alkaline batteries for the transmitter.

Transmitter Batteries

 A Six (6) cell NiMH battery pack. Or with proper

knowledge, LiPo battery packs.

Vehicle Battery
(6-Cell 7.2V “Stick Pack”)
LOSB9900

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If you are going to be using a charger other than a peak
detection charger it is important to have your battery fully
discharged prior to recharging. Many of these have a 15-20
minute timer that allows you to set to the amount of charge
time. If the battery was not fully discharged from prior use, you
can potentially over charge your battery pack.

Do not charge any battery unattended, and monitor for
heat build up. If the battery pack is more than warm to the
touch immediately discontinue charging.

Read all safety precautions supplied by the charger
manufacture, and also any from the battery manufacture.

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The Losi Desert Truck Overview

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Steering Trim

(ST. Trim)

Throttle Trim

(TH. Trim)

Throttle/Brake

Trigger

Auxiliary Channel

Throttle Channel

Steering Channel

Binding Port

Power On/Off

Switch

Dual Rate

Adjustment (ST. D/R)

Antenna

Steering Wheel

The Losi LSR-3000 Radio System Overview

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Motor

Bind Plug

On/ Off Switch

MSC 12RB 12T ESC

MRX3000 Receiver

Digital Servo

Male Battery

Plug

Setup Button

Desert Truck Electronics System Overview

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MSC 12RB 12T Fwd/Rev ESC

Features

• High power FET control with proportional forward and reverse.

• High frequency design delivers smooth speed transition.

• Thermal Overload Protection prevents damage due to over­ current conditions.

• Pre-wired with Tamiya battery plug and bullet-style motor connectors.

• Designed to operate with stock motors (12 turns or higher).

• Push-button programming makes setup a breeze.

Connecting the Battery

The MSC 12RB comes pre-wired with a Tamiya-style connector,
compatible with most battery packs. Use battery packs from 4-cell
(4.8-volt) to 6-cell (7.2-volt) sub-C size battery packs.

1. Be sure the on/off switch is in the “off” position.

2. Connect a fully charged battery pack to the speed control’s battery
connector.

Selecting Forward Only or

Forward/Reverse Mode

The MSC 12RB has 2 modes: Forward Only mode and Foward
and Reverse mode. The Forward Only mode can be selected for

racing purposes. When the ESC is powered on, the LED will flash

for 2 seconds: the color of the LED indicates which mode the
ESC is operating in:

Forward and Reverse Mode–The Green LED will Flash

Forward Only Mode–The Red LED will flash.

To change modes, push the set button and turn on the ESC. The

LED will flash, indicating the new mode has been selected. Note

the color of the LED to determine the mode of your ESC.

Adjusting theTransmitter

1. Set the “throttle reversing” switch to the NORMAL position.

2. Set the “throttle trim” to the CENTER position.

Speed Control Programming

NOTE: While in the programming mode, no power is

applied to the motor.

1. Turn on the transmitter’s power switch. (Be sure the transmitter
batteries are fully charged).

2. Turn the ESC switch on.

3. Press and release the setup button. The red and green LEDs
will light.

4. Move the throttle to the full throttle position and press the
programming button. The green LED will remain lit and the red
LED will go out. (If the ESC does not sense throttle movement
in 3 seconds by the transmitter, it will exit the programming
mode and you will have to begin again.)

5. Now move the throttle to full reverse and press the

programming button. The red LED will glow and the green
LED will go out.

6. Return the throttle to neutral and press the programming
button. The green LED will glow and the red LED will go out,
indicating programming is complete.

During normal operation, the green LED indicates neutral and the
red LED indicates full forward and full reverse.

Troubleshooting Guide

Symptom Solution

Steering servo operates but the motor does not run Programming is not complete. Re-program the ESC by following the programming instructions.

Speed control connected to receiver incorrectly.
Motor defective. Test motor independently, repair or replace as needed.
Low batteries. Charge as needed.
Overload Protection enabled. Check motor and connections

Steering and motor do not function

Receiver wired incorrectly. Check polarity and orientation of control plugs.
Batteries discharged. Recharge or replace.

Full speed not attainable

Transmitter adjusted improperly.
ESC programmed incorrectly. Re-program.

Motor slows but will not stop

Throttle trim may be set improperly
ESC program does not match transmitter.

Operation....................................... Proportional forward,

proportional reverse with
braking delay

Input Voltage ..................................4-cell (4.8 volts) to

6-cell (7.2 volts) DC

Peak Current .................................. 900 amperes

Continuous Current ........................ 46 amperes

Full-On Resistance ......................... 0.0014 ohms

Frequency ...................................... 2 kHz

BEC output ..................................... 4.8 VDC, 1 amp max.

Overload Protection........................ Thermal

Dimensions .................................... 1.25" x 1.02" x .888"

(38.6mm x 26.2mm x

22.5mm)

Weight ............................................ 1.2 oz (34 g)

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Installing Batteries:

Transmitter

Remove the battery cover from the bottom of the transmitter by sliding it away from the base of the handle. Install the four (4) AA size
batteries (not included) into the base, noting polarity when inserting each battery.

Transmitter with batteries

Reinstall the battery cover by sliding it back on the handle base.

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Battery Pack(s)

To install the battery pack remove the battery hold-down strap by removing the clip from the front mounting boss, and then, while
lifting the strap, pulling forward in one motion.

After you have inserted the fully-charged battery pack reinstall the battery hold-down strap.

Notice that the battery hold-down has a flat side while the other side has strengthening ribs; the rib side should be facing
down to the battery.

Insert on an angle into the rear support, and then down on the front pin and secure it with the previously removed clip.

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Quick Start

Note: Please read the entire manual to gain a full understanding of the Desert Truck
vehicle, fine-tuning the setup and performing maintenance.

 1. Read the safety precautions found on page 3. This is important for your safety and

prevention of personal injury.

 2. Charge the battery pack you have chosen (NOT INCLUDED). Refer to the

Manufacturer’s Supplied instructions for battery charging information.

 3. Install the AA batteries into the LSR-3000 Transmitter (see page 10). Use alkaline or

rechargeable batteries only (NOT INCLUDED).

 4. Install the battery pack (see previous page). This battery pack should be fully charged

before installation.

 5. Turn on the transmitter and then the vehicle. It is a good practice to

turn on the transmitter before the vehicle and turn it off after the vehicle has
been turned off.

 6. Check Steering (see page 13). Verify that the servo is functioning properly.

 7. Driving the Desert Truck (see page 15)

 8. Performing maintenance of the Desert Truck. Refer to Tuning, Adjusting, and

Maintenance of the Desert Truck on page 16.

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Steering Trim

(ST. Trim)

Throttle Trim

(TH. Trim)

Throttle/Brake

Trigger

Power On/Off

Switch

Dual Rate

Adjustment (ST. D/R)

Antenna

Steering Wheel

Losi LSR-3000 Radio System

The Losi LSR-3000 Radio System with Spektrum™ 2.4GHz DSM® Technology radio system included with the Desert Truck operates
on 2.4GHz and provides 79 unique channels, which are automatically selected when the transmitter and vehicle are turned on. The
communication between the transmitter and receiver begins in the few seconds after both are turned on.

They are bound together from the factory to uniquely operate together.

The Losi LSR-3000 DSM radio system will not interfere with radio systems operating on legacy frequencies such as
27MHz or 75MHz, neither will you experience any overlapping interference from other 2.4GHz systems.

Operation and Adjustment

Transmitter

The Losi LSR-3000 transmitter has several adjustments available to increase your enjoyment of the Desert Truck vehicle.

1. Power switch – Turns the transmitter On and Off.

2. Dual rate – (ST.D/R) Adjusts how much the wheels can turn left/right in equal proportion.

3. Steering Trim – (ST.TRIM) Adjusts the “Hands Off” direction of the Desert Truck.

4. Throttle Trim – (TH.TRIM) Fine adjustment for the throttle and brake center.

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Receiver

Steering Trim

(ST. Trim)

Throttle Trim

(TH. Trim)

Throttle/Brake

Trigger

Steering and Throttle

End-Point Adjustment Pots (4)

Auxiliary Channel

Throttle Channel

Steering Channel

Binding Port

Power On/Off

Switch

Dual Rate

Adjustment (ST. D/R)

Antenna

Steering Wheel

There is no adjustment required of the receiver. Please note the different slots for connection.

There is Bind, channel one, channel two and auxiliary slots.

The bind slot is used to bind the transmitter to the receiver. The Losi LSR-3000 DSM® radio system uses a unique GUID ID to “bind” the
transmitter to each receiver. This bind process has been performed during assembly and is described should you replace the receiver
or during a trouble shooting exercise you be requested to rebind your transmitter and receiver.

Although the transmitter and receiver are set “bound” at the factory, below are the steps required to rebind your transmitter and
receiver should the need arise.

Rebind Process

1. Ensure that the transmitter and vehicle are both turned off.

2. Using the supplied Bind plug (which looks like a standard receiver plug with a short wire loop installed), insert the Bind plug
into the receiver slot labeled BIND. When you look down on the receiver slots it is the slot furthest from the LED, and nearest
to the corner of the receiver.

Note: You do not need to remove any other plugs to rebind.

3. With the bind plug installed, turn on the vehicle. Notice the LED is now blinking.

4. You are now ready to turn on the transmitter. You should notice on the back of the transmitter a similar blinking LED
under a translucent cover.

5. Both the receiver and transmitter LEDs will stop blinking and be on solid, indicating that they have bound
themselves together.

6. Turn off the vehicle and then the transmitter.

7. Remove the bind plug from the receiver.

8. Turn on the transmitter and then the vehicle to ensure operation. If the transmitter does not control the vehicle,
please repeat steps 1-7 above. If after several attempts you are unsuccessful please call Horizon product support.

9. The bind process is complete. Your vehicle’s radio system is now ready for use.

Receiver Antenna

Using your fingers gently straighten the antenna wire to be close to vertical from the chassis for the best radio reception.

Factory Settings of Radio/ESC

The Electronic Speed Control was calibrated together with the radio system at the factory. When you turn on and run the Desert Truck
for the first time you may be required to slightly adjust the Throttle Trim. If the vehicle creeps in reverse or in forward just make a fine
adjust to the Throttle Trim knob on the transmitter. Sometimes during the bumps and bounces of transportation the settings can be
slightly altered.

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Driving the Desert Truck

Please note the following precautions before running
your Desert Truck.

• The Electronics in this vehicle are not waterproof and you
must avoid running the vehicle in or through standing
water, wet grass, mud or snow.

• This vehicle is quick:

o Do not run the vehicle if it will be out of sight for any
amount of time.
o Do not drive your vehicle near a crowd of people.

• Perform a check of the vehicle before going out to run it.

o Ensure the tires are not coming off the rims.
o Generally check the vehicle for items such as a

loose wheel nut, or anything loose on the steering
assembly. The vibrations of running off-road tend to
loosen screws and nuts.

• The Desert Truck’s gearing choice from the factory IS NOT
meant for running the vehicle in tall grass.

• Be careful driving when the battery is nearly discharged or
the car is running slowly. You could lose enough power for
the receiver to shutdown and you may lose control.

• When driving the Desert Truck be cautious and use
common sense.

• If your vehicle gets caught or stuck do not pull the throttle
in either forward or reverse. This will overload the ESC
and/or motor resulting in damage to one or possibly both
and is not covered by your warranty.

• After running a battery pack, allow the electronics several
minutes to cool, before running the next battery pack.

How you drive your Desert Truck will also affect your run
times. If you are performing runs, going from a standstill to full
speed repeatedly, you are asking a lot from your batteries and
electronics. Hard acceleration draws a lot of current from any
battery and will lead to shortened run time.

If the bearings are dirty they will cause significant drag causing
reduced run times and speed.

To improve run times consider the following:

• Keep your vehicle clean and maintained.

• Allow more airflow to the heat sink of the MSC 12RB ESC.

• Change the gearing to a lower ratio, this will make the
electronics run cooler. This can be accomplished by using
a smaller pinion gear, or a larger spur gear than those
originally supplied. (The Desert Truck comes with a 16­tooth pinion and an 88-tooth spur gear.)

• Change to battery packs of higher mAh rating.

• Is the charger you’re using the best at charging your
batteries? Check with your local hobby dealer.

Run time consideration for the Desert Truck vehicle.

The single largest factor in run time is the capacity mAh of
your battery pack. The larger the mAh rating the more run time
you will experience. On the same note, the longer you run, the
hotter the battery plugs can get. Please check the standard
plugs periodically.

For example: if you have a 4600mAh battery pack you can
expect close to twice the run time of a 2000mAh battery pack.

The condition of a battery pack is also an important factor in
both run time and speed. As batteries see more use they will
degrade in performance and capacity.

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Tuning, Adjusting & Maintaining the Desert Truck

Periodically examine your Desert Truck for the following:

• Keep your vehicle clean using a brush to remove dirt
and dust.

• Look for cracks in the suspension arms and other
molded parts.

• Check that the tires are still glued to the wheels.

• Check that all the wheel bearings are clean and lubricated.

• Using your tools, attempt to tighten all the screws and
nuts.

• Verify that the Camber Links and Steering Linkage are
not bent.

• Check that the Toe and Camber settings are as desired
and equal.

• Remove the gear cover.

o Check the Spur gear for wear.
o Check the Pinion gear.
o Check the Slipper Pads for wear.

• Take the shocks off the vehicle and check, especially if they
appear to be leaking as it is time to rebuild them.

• Look over all the wiring and connections for bare wire or
any place which could lead to a short circuit.

• Verify that the ESC is securely mounted to the chassis.

• Verify the receiver is still securely mounted to the chassis.

• Turn on the radio and if the Green LED is off or dim replace
the 4 AA batteries in the transmitter.

After you become familiar with driving your Desert Truck,
you may need to reset or make adjustments for better
driving performance.

Just as in a real car, alignment is an important factor in your
vehicle’s handling. When you are ready to make adjustments
it is a good idea to have a flat work space to place your vehicle
on. This will enable you to easily and more quickly make both
Toe-in and Chamber adjustments. These adjustments should be
set with the vehicle sitting at its normal ride height.

Tuning the Front End of the Desert Truck

Shock Location: The Desert Truck has two mounting locations
on the front shock tower. The position can be easily adjusted
by simply moving the top of the shock to another hole. The
standard location (outside hole on the tower) works best on
most surfaces. Moving the top of the shock inward a hole will
slow steering response and make the Desert Truck smoother
in bumps. The standard position on the arm is in the middle,
which offers the best balance. Running the inside shock
location will give the Desert Truck more steering into the turn
and less steering on corner exit. Running the shock location
outside on the front arm will give you less overall steering
into the turn and keep the front end flatter through the turn,
making the Desert Truck smoother and easier to drive. This can
be used on high traction surfaces.

All of the Camber and Steering Linkages have been assembled
in the following way.

Using the supplied flat metal turn buckle wrench if you need
to SHORTEN any link on the Desert Truck rotate the wrench
towards the front of the vehicle (counter-clockwise). If you need
to LENGTHEN any link then rotate the wrench towards the rear
of the vehicle (clockwise).

Static Camber: This refers to the angle of the wheels/tires
relative to the surface (viewed from either the front or back).
Negative camber means that the top of the tire leans in toward
the chassis. Positive camber means the top of the tire leans out,
away from the chassis. Camber can be precisely measured with
after-market camber gauges, sold at a local hobby shop. It can
be measured (roughly) using any square (to the ground) object
by checking the gap between the square edge and the top of
the tire. Testing has shown that 1 degree of negative camber
is best for most track conditions. Increasing negative camber
(in the range of 1-2 degrees) will generally increase steering.
Decreasing negative camber (in the range of 0-1 degree) will
generally decrease steering and the Desert Truck will feel easier
to drive as a result. This is, most often, a very critical adjustment
in tuning your Desert Truck that can be made quickly and easily.

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Inboard Camber Location: The Desert Truck has three
different inner locations with vertical adjustment for the front
camber tie rod. In general, the lower or further out the inside
position is, relative to the outside, the more camber gain (total
camber change through the total throw of the suspension) is
present. This is an adjustment that is difficult to make a generic
statement for as it can have slightly different results on various
conditions. The following is a summary of how this adjustment
will usually impact the handling of the Desert Truck. A longer
front camber link will usually make the Desert Truck feel stiffer.
This will help keep the Desert Truck flatter with less roll, but can
make the Desert Truck handle worse in bumpy conditions, it
also will make the Desert Truck easier to drive. A shorter front
camber link will result in more front end roll, which will provide
more steering on tighter turns with the loss of some stability.
You will also lose some high speed steering but might gain
some more steering response. Too short of a front link may
make the Desert Truck feel “twitchy” or “wandery” meaning that
it may be difficult to drive straight at high speed.

Inboard Camber Vertical Adjustment: Washers are often
used under the inner ball stud mounting location; this is one
of the most important adjustments on the Desert Truck. You
should get a feel for how the number of washers affects the
handling. Adding washers will make the Desert Truck more
stable and keep the front end flatter. This works well on higher
traction surfaces. Removing washers will make the steering
more aggressive, which works well on lower traction surfaces.
This can be good in some conditions, but can also make the
Desert Truck difficult to drive in others. The best all-around
adjustment is with three washers as the vehicle comes built.
The washers that are used are included in an assortment
package of washers (LOSA6350).

Outboard Camber Location: In addition to the inboard
camber location, the Desert Truck also provides three outboard
mounting options. The middle location is the most used as it
provides the best and most consistent handling on different
surfaces. The outer location also helps the Desert Truck stay
tighter in turns with a more precise steering feel. Moving the
link to the inner hole will make the steering react slightly slower
and steer smoother. The advantage to the inner hole is that it
can increase on-power steering and help the Desert Truck get
through bumps better.

Toe-In/Out: This is the parallel relationship of the front tires to
one another. Toe-in/out adjustments are made by changing
the overall length of the steering tie rods. Toe-in (the front
of the tires point inward, to a point in front of the front axle)
will make the Desert Truck react a little slower, but have more
steering from the middle of the turn, out. The opposite is true
with toe-out (the front of the tires point outward, coming to a
point behind the front axle), the Desert Truck will turn into the
corner better but with a decrease in steering from the middle of
the turn, out. Toe-in will help the Desert Truck to track better on
long, straight, high-speed runs, where toe-out has a tendency
to make the Desert Truck wander. We recommend to run
between 0-degree of toe-in/out to 1 degree of toe-in.

Bump-In/Out: Bump-out (front of the front tires toe-outward
under suspension compression) will result in more off-power
steering and less consistent handling if you have too much
bump-out. This effect is obtained by adding washers under
the steering spindle ball stud. Bump-in (front of the front tires
toe-inward under suspension compression) will result in less
off-power steering and running. Too much bump-in can make
the steering feel very inconsistent. This effect is obtained by
installing a ball stud washer on the bottom of the spindle.
Testing has shown that running a little bit of bump-in (kit
setup) in the Desert Truck offers the best overall setup.

Caster: This is the angle of the kingpin from vertical when
viewed from the side of the Desert Truck. The Desert Truck
comes equipped with 30-degree spindle carriers and a 30­degree kick-up angle. Total caster is determined by adding
the amount of kick-up (Desert Truck has 30 degrees) and the
kingpin angle of the front spindle carriers. Increasing total
caster will provide more steering entering a turn but less on
exit. Decreasing total caster will cause the steering to react
faster and increase on-power steering.

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Tuning the Rear End of the Desert Truck

Shock Location: Moving the shocks out on the arm will result

in less forward traction and let the Desert Truck make more of
an arc through the exit of the turn. In general, when changing
shock locations on the arm, it will be necessary to go down one
spring rate when moving out on the arm.

Static Camber: Having the same definition as for the front end
and measured in the same fashion, rear camber can also be a
critical tuning feature. Testing has shown that running a small
amount of negative camber (.5-1 degree) is best. Increasing
negative rear camber (in the range of 1.5-3 degrees) will
increase stability and traction in corners, but decrease high
speed stability. Decreasing rear camber (in the range of 0-1.5
degrees) will decrease stability and traction in corners, but will
increase high speed stability.

Inboard Camber Location: The Desert Truck has multiple rear
camber locations. Using a longer camber link will improve
stability and traction (grip). Using a shorter camber link will
increase steering while decreasing rear grip. Running the
camber link in the inside position on the shock tower will give
your Desert Truck more steering entering the turn as it will
let the Desert Truck set over the rear tire and give you more
forward traction exiting the turn. As you move the camber link
towards the outside of the Desert Truck, you will gain less initial
steering, however, you will gain more steering as the Desert
Truck exits the turn. The Desert Truck now has the capabilities
of a lower row of holes in the rear shock tower for the inner
camber link location. The lower hole gives the Desert Truck
more camber gain (more angle relative to arm = more camber
gain). This can be helpful when tracks get bumpy and rutted
to help the rear end of the Desert Truck go through the bumps
easier due to the increased camber gain of the tires.

Outboard Camber Location: Running the camber link in the
inside position on the hub will generate more rotation entering
a turn, but decrease steering on exit. Running the camber link
in the furthest outer position on the hub will generate more
stability entering a turn and increase steering on exit.

Toe-In: Having the same definition as for the front end, the
toe-in can be adjusted on the Desert Truck with the rear hubs.
The stock toe-in is 3 degrees of inboard per side and 0 degrees
in the hub. Increasing rear toe-in will increase forward traction
and initial steering, but reduce straightaway speed. Decreasing
rear toe-in will decrease forward traction and “free-up” the
Desert Truck. Less toe-in can be used to gain top speed.

Anti/Pro-Squat: Increasing anti-squat is generated by raising
the front of the pivot block, relative to the rear of the pivot.
This will increase initial steering and forward traction. You can
increase anti-squat in 1 degree increments by using two .030
washers between the front of the pivot plate and pivot block.
Pro-squat is generated by raising the rear of the pivot relative to
the front. This will decrease forward traction and initial steering,

but provide more on-power steering on high traction surfaces.
Pro-squat will also help the Desert Truck from pulling wheelies
on high bite surfaces. Also available is an aftermarket part that
is a 0 degree rear pivot block (LOSA2112), if pro-squat is desired
it is best to start with this option.

Tuning the Chassis of the Desert Truck

Slipper Adjustment: After fully tightening the adjustment
nut (so the coils of the spring just touch) loosen the slipper
adjustment nut 2 1/4 turns. This will be a good starting point for
your slipper settings.

Ride Height: This is the height of the chassis in relation to the
surface. It is an adjustment that affects the way your Desert
Truck jumps, turns and goes through bumps. To check the ride
height, drop one end (front or rear) of the Desert Truck from
about a 5-6 inch height onto a flat surface. Once the Desert
Truck settles into a position, check the height of that end of
the Desert Truck in relationship to the surface. To raise the ride
height, lower the shock collar on the shock evenly on the end
(front or rear) of the Desert Truck that you are working on. To
lower the ride height, raise the shock collar. Both left and right
nuts should be adjusted evenly.

Every driver likes a little different feel so you should try small
ride height adjustments to obtain the feel you like. This should
be one of the last adjustments after everything else has been
dialed in (tuned). Do not use ride height adjustment as a
substitute for a change in spring rate. If your Desert Truck needs
a softer or firmer spring, change the spring. Do not think that
simply moving the shock collars will change the stiffness of the
spring; it will not.

18

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Battery Position: This is a critical adjustment that is often

Spur Gear Size

Pinion Gear Size

X 2.43 = Final Drive Ratio

overlooked but can be very useful. Start by running the battery
spaced in the middle (standard setup with 6-cell battery pack).
Moving the battery back can improve rear traction on slippery
surfaces and steering response. Moving the battery back too
far can cause the rear end to swing through turns on some
tracks and “dump” the rear end causing instability issues. This
is a result of having the weight too far back. The Desert Truck
comes equipped with two foam battery spacers to split the
difference when adjusting the battery position, hence offering
a middle position when either extreme is inadequate.

Camber Rise Relationship: The Desert Truck setup out of the
box comes with less front camber gain than the rear camber
gain. The reason for this is that less front camber lets the front
end drive flatter and makes the Desert Truck more stable. By
having more camber gain in the rear, the Desert Truck has more
rear traction, this helps the rear tires accelerate through the
bumps and ruts.

Wheels and Tires

The tires come pre-mounted with the vehicle and should be
checked to make certain they stay glued to the wheels. The
wheel spinning speeds can pull the rubber tire away from the
rim. When a tire or tires come loose from the rim you will notice
the vehicle is hard to control.

Tip the vehicle on its side and using both hands to hold one
wheel at a time, use your thumb to press the tire away from
the rim. If you see a tire pull away for the rim use Losi Tire Glue
(LOSA7880 thick or LOSA7881 thin) to re-glue. It only takes a
small drop of glue generally. Be careful this is CA-type glue and
you do not want to glue your fingers to the wheel and tire.

Use safety goggles when gluing tires.

Check the mounting of the tire periodically to ensure proper
performance and handling.

Steering Assembly: Occasionally, check the steering assembly
and you may notice increased looseness. There are several
components which will wear out from use: tie rod ends
(part LOSA6074), the servo saver (part LOSA1610), the bell
crank bushings (part LOSA1620), and the Drag link ball ends
(LOSA6074). You can easily replace these components to restore
factory specifications.

Note: The bell crank bushings may be replaced with
ball bearings (part LOSA6912).

Adjusting Gear Mesh

Incorrect gear mesh is the most common cause of stripped spur
gears. To set the gear mesh, one method is to cut a narrow strip
of notebook paper and thread it in between the gears. Loosen
the motor screws and slide the motor and pinion gear into the
spur gear. Retighten the motor screws and then remove the
strip of paper. Or you can loosen the motor and carefully slide
the motor leaving a small amount of backlash (play) between
the spur and pinion gears. It should not be tight and if you look
up-close there should be slight movement of the spur before
contacting the teeth on the pinion gear.

Gear Ratio

Changing the gearing provides you a quick and easy way
to tune the Desert Truck. Use the temperatures of both the
motor and your battery pack as a guide to gearing to your
environment. When the Motor is above 160-170 degrees
Fahrenheit or the batteries are above 125-135 degrees
Fahrenheit, these are both strong indications that you should
drop the pinion size smaller. This would be a lower gear ratio
or larger number, for example from 11.25 to 12.40. Going up
a pinion size is called gearing higher or a small number, for
example 11.25 to 10.6, and will increase power consumption
and allow more speed.

Use the following formula to calculate the overall ratio for
combinations not listed on the gear chart:

When using higher gear ratios, it is extremely important to
monitor the temperatures of the battery and motor. If the
battery is extremely hot, and/or the motor is so hot that you
cannot touch it, most likely you are over-geared and drawing a
lot of current.

The gear combination that comes on the Desert Truck (16-tooth
pinion / 88-tooth Spur) provides high-speed running intended
for hard surfaces, and this gearing is not recommended for
off-road, running in grass or constant starting and stopping.

Storage

When you are through running the model for the day

• Blow it off with compressed air or use a soft bristled paint
brush to dust-off the vehicle.

• Always disconnect and remove the battery from the
model whenever the model is stored. If the model will
be stored for a long time, then also remove the batteries
from the transmitter.

19

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Troubleshooting your Desert Truck

Many questions are the result of simple user errors or minor
adjustments which are easily addressed. If after reading below
you cannot resolve your problem, then please call Horizon
Customer Service at 1-877-504-0233.

Vehicle runs slowly/slow acceleration:

Check the battery connectors.
Confirm that battery is charged.

Vehicle will not reverse:

Make sure the throttle trim is at neutral.

Radio system does not work properly:

If the power light on the transmitter is not turning on, first
ensure the batteries are installed correctly. You should also
check that the batteries are good and/or if rechargeable are
fully charged. Replace them if needed. If the power light is
blinking, then the transmitter batteries are weak and should
be replaced. If the transmitter light is on but the radio is still
not responding, you may need to rebind the transmitter to the
receiver. Please see page 14

Short radio range:

If the radio range appears short, make sure the batteries are all
fully charged and/or are in good condition.

Steering works but the motor will not run:

The speed control may have gotten too hot and thermally
shut down. Allow time for the speed control to cool. If this is
the problem and has happened a few times, consider using a
smaller pinion or a larger spur gear.

Check the transmission, do the rear wheels spin easily?

Check that a motor wire has not come loose.

Verify that the electronic speed control is plugged into the
throttle channel of the receiver.

Recalibrate/Setup the ESC (see page 9).

Check to see if the ESC is in Forward only mode that does not
have reverse active.

Keep stripping spur gears:

Improper gear mesh, refer to page 19.

Improperly adjusted slipper, refer to page 18.

Check using another battery. Contact Horizon support for
service instructions.

Steering servo does not work:

Check all wires, radio system, battery connectors, and the
battery pack.

Contact Horizon support for service instructions.

Motor runs backwards:

The Black wire lead from the motor should be connected to the
Black wire lead from the ESC and the same for the Red wires.
If not, please correct by swapping the wires. If you are still
experiencing problems please contact Horizon support.

Motor starts running immediately after the battery has
been connected.

There may be internal ESC damage. Contact Horizon
Customer Support.

20

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Warranty Information

Warranty Period

Exclusive Warranty- Horizon Hobby, Inc., (Horizon) warranties
that the Products purchased (the “Product”) will be free from
defects in materials and workmanship at the date of purchase
by the Purchaser.

If you as the Purchaser or user are not prepared to accept
the liability associated with the use of this Product, you are
advised to return this Product immediately in new and unused
condition to the place of purchase.

Law: These Terms are governed by Illinois law (without regard
to conflict of law principals).

Limited Warranty

(a) This warranty is limited to the original Purchaser
(“Purchaser”) and is not transferable. REPAIR OR REPLACEMENT
AS PROVIDED UNDER THIS WARRANTY IS THE EXCLUSIVE
REMEDY OF THE PURCHASER. This warranty covers only those
Products purchased from an authorized Horizon dealer. Third
party transactions are not covered by this warranty. Proof
of purchase is required for warranty claims. Further, Horizon
reserves the right to change or modify this warranty without
notice and disclaims all other warranties, express or implied.

(b) Limitations- HORIZON MAKES NO WARRANTY OR
REPRESENTATION, EXPRESS OR IMPLIED, ABOUT NON­INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE OF THE PRODUCT. THE PURCHASER
ACKNOWLEDGES THAT THEY ALONE HAVE DETERMINED THAT
THE PRODUCT WILL SUITABLY MEET THE REQUIREMENTS OF
THE PURCHASER’S INTENDED USE.

(c) Purchaser Remedy- Horizon’s sole obligation hereunder shall
be that Horizon will, at its option, (i) repair or (ii) replace, any
Product determined by Horizon to be defective. In the event of
a defect, these are the Purchaser’s exclusive remedies. Horizon
reserves the right to inspect any and all equipment involved
in a warranty claim. Repair or replacement decisions are at
the sole discretion of Horizon. This warranty does not cover
cosmetic damage or damage due to acts of God, accident,
misuse, abuse, negligence, commercial use, or modification
of or to any part of the Product. This warranty does not cover
damage due to improper installation, operation, maintenance,
or attempted repair by anyone other than Horizon. Return
of any goods by Purchaser must be approved in writing by
Horizon before shipment.

Damage Limits

HORIZON SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT
OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR
PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED
WITH THE PRODUCT, WHETHER SUCH CLAIM IS BASED IN
CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY.
Further, in no event shall the liability of Horizon exceed the
individual price of the Product on which liability is asserted.
As Horizon has no control over use, setup, final assembly,
modification or misuse, no liability shall be assumed nor
accepted for any resulting damage or injury. By the act of use,
setup or assembly, the user accepts all resulting liability.

Safety Precautions

This is a sophisticated hobby Product and not a toy. It
must be operated with caution and common sense and
requires some basic mechanical ability. Failure to operate
this Product in a safe and responsible manner could result
in injury or damage to the Product or other property. This
Product is not intended for use by children without direct adult
supervision. The Product manual contains instructions for
safety, operation and maintenance. It is essential to read and
follow all the instructions and warnings in the manual, prior to
assembly, setup or use, in order to operate correctly and avoid
damage or injury.

Questions, Assistance, and Repairs

Your local hobby store and/or place of purchase cannot provide
warranty support or repair. Once assembly, setup or use of the
Product has been started, you must contact Horizon directly.
This will enable Horizon to better answer your questions and
service you in the event that you may need any assistance.
For questions or assistance, please direct your email to
[e-mail], or call 877.504.0233 toll
free to speak to a service technician.

Inspection or Repairs

If this Product needs to be inspected or repaired, please call
for a Return Merchandise Authorization (RMA). Pack the
Product securely using a shipping carton. Please note that
original boxes may be included, but are not designed to
withstand the rigors of shipping without additional protection.
Ship via a carrier that provides tracking and insurance for
lost or damaged parcels, as Horizon is not responsible for
merchandise until it arrives and is accepted at our facility. A
Service Repair Request is available at www.horizonhobby.com
on the “Support” tab. If you do not have internet access, please
include a letter with your complete name, street address, email
address and phone number where you can be reached during
business days, your RMA number, a list of the included items,
method of payment for any non-warranty expenses and a brief
summary of the problem. Your original sales receipt must also
be included for warranty consideration. Be sure your name,
address, and RMA number are clearly written on the outside of
the shipping carton.

Warranty Inspection and Repairs

To receive warranty service, you must include your original
sales receipt verifying the proof-of-purchase date. Provided

warranty conditions have been met, your Product will be
repaired or replaced free of charge. Repair or replacement
decisions are at the sole discretion of Horizon Hobby.

21

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Non-Warranty Repairs

Should your repair not be covered by warranty the repair
will be completed and payment will be required without
notification or estimate of the expense unless the expense
exceeds 50% of the retail purchase cost. By submitting

the item for repair you are agreeing to payment of the repair
without notification. Repair estimates are available upon
request. You must include this request with your repair. Non­warranty repair estimates will be billed a minimum of ½
hour of labor. In addition you will be billed for return freight.
Please advise us of your preferred method of payment.
Horizon accepts money orders and cashiers checks, as well
as Visa, MasterCard, American Express, and Discover cards. If
you choose to pay by credit card, please include your credit
card number and expiration date. Any repair left unpaid or
unclaimed after 90 days will be considered abandoned and will
be disposed of accordingly. Please note: non-warranty repair

is only available on electronics and model engines.

Electronics requiring inspection or repair should be shipped to
the following address:

Horizon Service Center

4105 Fieldstone Road

Champaign, Illinois 61822

All other Products requiring warranty inspection or repair
should be shipped to the following address:

Horizon Product Support

4105 Fieldstone Road

Champaign, Illinois 61822

RC Terminology

BEC (Battery Elimination Circuit) – The BEC is used to eliminate
the need for a receiver pack to power the radio system. On
most electric vehicles this is located in the electronic speed
control (ESC), but can also be a stand-alone device.

BIND Process – Programming a receiver to recognize the GUID
code of only one specific transmitter or transmitter module.

Calibration – Also called ESC setup. It is the process used to
match the transmitter throttle, brake and neutral to the ESC.

Current – Refers to the power flow from the battery to the ESC
and Motor when used in the RC vehicle environment. Typically
this is measured in Ampere or Amp.

Deadband – This refers to the amount of travel (movement) on
the transmitter trigger before the vehicle is requesting the ESC
to move the vehicle forward or backwards. It is an advanced
adjustment used by experienced drivers.

DSM – (Digital Spectrum Modulation) – The 2.4GHz technology
of Spektrum radios.

ESC (Electronic Speed Control) – The ESC is what translates
the signals past from the transmitter trigger through the
receiver into commands that reach the motor to signal
forward or reverse, acceleration or braking. The Xcelorin
system is an advanced electronic speed controller that is
very efficient in passing precise requests to the brushless
motor. The BEC is also controlled by the ESC along with the
Low Voltage Protection circuit.

GUID – Globally Unique Identification Code. Each
individual module or radio is factory programmed with
its own unique serial code. In the binding process, the
receiver is programmed to only recognize the GUID code
of one specific radio or module.

Please call 877-504-0233 with any questions or concerns
regarding this product or warranty.

Instructions for Disposal
of WEEE by Users in the European Union

This product must not be disposed of with other waste.
Instead, it is the user’s responsibility to dispose of their waste
equipment by handing it over to a designated collection point
for the recycling of waste electrical and electronic equipment.
The separate collection and recycling of your waste equipment
at the time of disposal will help to conserve natural resources
and ensure that it is recycled in a manner that protects human
health and the environment. For more information about where
you can drop off your waste equipment for recycling, please
contact your local city office, your household waste disposal
service or where you purchased the product.

LiPo – A Lithium Polymer battery’s abbreviation indicating
the chemistry used in these rechargeable batteries. These
batteries require special attention by the user and are only
recommended for the most experienced of users.

mAh – The Milliampere Hour abbreviation, which represents
the capacity of a battery pack. The higher this rating the longer
the run time of each charge.

Neutral Position – Referring to the Transmitter when at rest,
meaning the throttle trigger and steering have no input. When
you turn the transmitter on, set it to the side while turning the
car on, the transmitter will be in a Neutral state.

NiMH – The abbreviation for nickel-metal hydride rechargeable
batteries. These have replaced the use of NiCd batteries as the
battery of choice in RC vehicles.

22

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Profiles – The MSC 12RB has two (2) preset profiles. Forward
Only and Forward and Reverse profile. The Forward only profile
can be selected for racing purposes. The Forward/Reverse
profile is great for running in your neighborhood.

Receiver – A device mounted into the vehicle that receives and
decodes a signal sent by a transmitter. Servos, ESC and other
devices are plugged into the receiver.

Resistance – As used here refers to the power loss from the
battery to the ESC and Motor. Typically this is measured in
Ampere or Amp. Too much resistance between the battery, ESC
and motor can result in low performance and run time.

Servo – An electronic device connected to the receiver used to
actuate steering control of the vehicle.

Spektrum – The technology brand of 2.4GHz radio system
supplied with the Desert-T. The use of this technology
eliminates the concern of conflicting frequencies found with
older legacy radio systems. It further reduces to a minimum
potential radio interference common with the legacy radio
systems of the past.

Transmitter – Is the device held in your hand that relays
steering and throttle/brake requests made to the receiver.

Trim – This is a setting used on the transmitter to make
fine adjustments to the steering or throttle/brake trigger.
For steering you would use the trim to make the adjustment
for the vehicle to drive straight without adding steering input
to the transmitter.

Thermal Shutdown – Refers to the ESC operating
temperature. The MSC 12RB ESC monitors its internal
temperature and will automatically prevent the ESC from
delivering power to the motor, preventing damage due to
overheating the ESC’s electronics.

23

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Replacement Parts List

Part Number Description Price

LOSA1022 Front Axles for XX-T Wheels (GTX, NXT, XXX-T) ..................................................................................

$6.00

LOSA1113 Front Shock Tower (Desert Truck) ........................................................................................................... $5.99

LOSA1118 Front Suspension Arms (Desert Truck) .................................................................................................

$7.99

LOSA1146 Front Outer & Kingpins 3/32” (XX, ‘CR’, XXX, XXX-T) .........................................................................$3.00

LOSA1150 Front Outer Hinge Pin (XXX-T) .................................................................................................................$3.50

LOSA1610 Steering Hardware Set ...............................................................................................................................$3.50

LOSA1615 Short Ball Cups and Threaded Rod ........................................................................................................$2.75

LOSA1620 Steering/Servo Mount Assembly (XXX, XXX-T) .................................................................................$6.00

LOSA2006 Swivel Suspension Balls .250” (8) ............................................................................................................$4.00

LOSA2007 Hinge Pin 1.42” (XXT, XXX, XXX-T) ...........................................................................................................$3.00

LOSA2105 Rear Shock Tower (Desert Truck) ............................................................................................................$5.99

LOSA2108 Rear Pivot Plate (XXX, XXX-T) ...................................................................................................................

$4.00

LOSA2143 Rear Suspension Arms (Desert Truck) ...................................................................................................$8.50

LOSA2164 1/8” Upper Bulkhead / Outer Rear Hinge Pin (2) ............................................................................... $3.00

LOSA2166 Inner Rear Hinge Pins (XXX, XXX-T) .......................................................................................................$3.00

LOSA2919 Desert Truck Transmission Case (Gear Diff only) ................................................................................ $5.99

LOSA2930 Desert Truck Complete Diff Set ............................................................................................................. $15.99

LOSA2931 Desert Truck Diff Gear Housing ................................................................................................................ $4.99

LOSA2934 Deset Truck Steel Outdrives w/Pins (2) ..................................................................................................$6.99

LOSA2942 Motor Plate and Front Pin Brace (Desert Truck) ................................................................................$8.99

LOSA2960 RCVD Set Axle, Dog Bone Hdw ............................................................................................................ $19.99

LOSA3042 Gear Cover with Access Plug (Desert Truck, XXX-T CR) ...................................................................$5.00

LOSA3060 Slipper Shaft, Spacer & Hardware ........................................................................................................... $5.50

LOSA3066 Teflon™ Assembly Lube .............................................................................................................................. $2.50

LOSA3075 Transmission Upper Gear, Idler, Shaft ...................................................................................................$6.00

LOSA3079 Idler Gear (2.19:1 and 2.43:1) ...................................................................................................................$3.50

LOSA3123 Slipper Pad ......................................................................................................................................................$3.00

LOSA3124 Slipper Spring, Cup, Spacer, Bushing, and Washer ...........................................................................$3.00

LOSA3132 Slipper Backing Plate ..................................................................................................................................$6.00

LOSA3928 88T 48-Pitch Spur Gear ............................................................................................................................... $3.50

LOSA4004 Servo Tape (6) ................................................................................................................................................$1.75

LOSA4015 Foam Battery Block .......................................................................................................................................$7.99

LOSA4060 Desert Truck Front Bumper & Skid Plate ...............................................................................................$7.99

LOSA4061 Desert Truck Roll Cage Set ...................................................................................................................... $13.99

LOS4116 48 Pitch Pinion Gear, 16T ............................................................................................................................ $5.99

LOSA4109 Main Chassis and Brace (XXX-T CR,Speed-T, Desert-T) ................................................................. $24.99

LOSA4112 Desert Truck Front & Rear Body Mount Set..........................................................................................$2.99

LOSA4122 Front Kickplate, Bulkhead, and Steering Brace(XXX,T) ...................................................................$9.00

LOSA4125 Front Spindles/Carriers, and Rear Hubs (XXX-T) ................................................................................$7.50

LOSA4126 Front and Rear Pivot Block Set (XXX, XXX-T) .......................................................................................$6.00

LOSA4132 Front Bumper, Motor Guard (Speed T, Desert -T) ..............................................................................$6.99

LOSA4136 Front and Rear Inner Pin Brace Set (XXX, XXX-T) ...............................................................................$3.00

LOSA4170 Battery Strap, Pad, and Foam Block (XXX-TCR-Desert Truck) ........................................................$4.49

LOSA4136 Front and Rear Inner Pin Brace Set (XXX, XXX-T) ...............................................................................$3.00

LOSA4170 Battery Strap, Pad, and Foam Block (XXX-TCR-Desert Truck) ........................................................$4.49

LOSA4224 Threaded Chassis Inserts - Short and Long ........................................................................................$6.50

LOSA5015 Double O-Ring Shock Cartridge .............................................................................................................$2.00

LOSA5023 Spring Clamps & Cups (2) ..........................................................................................................................$2.50

LOSA5026 Desert Truck Blue Aluminum Shock Body (2).................................................................................. $11.99

LOSA5045 Shock Pistons #56 (Red) (4) .......................................................................................................................$3.00

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Part Number Description Price

LOSA5047 Shock Pistons #55 (Orange) (4) ...............................................................................................................

$3.00

LOSA5156 2.5” Spring 3.4 Rate Rear (Silver) .............................................................................................................$2.50

LOSA5224 Team Losi Certified Shock Fluid 30 wt Front .......................................................................................$3.50

LOSA6001 Ball Studs w/Rod Ends 4-40 x 3/16” (4) .................................................................................................$3.50

LOSA6020 H.D. 30-degree Plastic Rod Ends (Sport)(12) ......................................................................................$4.50

LOSA6030 Assembly Wrench (version 2) ...................................................................................................................$1.50

LOSA6044 H.D. Rod Ends & Balls: Desert-T, Speed-T 8B, 8T .................................................................................$6.99

LOSA6074 Adjustable L/R Turnbuckle Set (6) (Speed-T, Desert-T) ....................................................................$9.99

LOSA6100 1/8” E-Clips ......................................................................................................................................................$1.25

LOSA6102 C-clips, .1875” - Large (12) .........................................................................................................................$1.75

LOSA6201 3mm x 8mm Cap-Head w/Washers (10) ..............................................................................................$3.00

LOSA6204 4-40 x 1/2” Cap-Head Screws (10) ..........................................................................................................$1.50

LOSA6206 4-40 x 3/8” Cap-Head screws (10) ........................................................................................................... $1.50

LOSA6210 4-40 x 3/8” Flat-Head Screws (10) ........................................................................................................... $1.50

LOSA6215 #4 Narrow Washers (10) .............................................................................................................................$1.25

LOSA6216 4-40 x 7/8” Cap-Head Screws (10) ..........................................................................................................$1.50

LOSA6229 4-40 x 3/8” Button-Head Screws (10) ..................................................................................................... $2.00

LOSA6230 Shim Assortment - 3/16”, 1/4”, 1/2” (20) ................................................................................................$2.50

LOSA6233 4-40 x 5/8” Flat-Head Screws (10) ........................................................................................................... $2.50

LOSA6300 4-40 Hex Nuts (10) ........................................................................................................................................$1.00

LOSA6303 10-32 Locknuts (4ea Nylon & Steel) (8) .................................................................................................$1.50

LOSA6305 4-40 Aluminum Locknuts, Low Profile (10) .........................................................................................$3.50

LOSA6306 4-40 Aluminum Mini Nuts (10) ................................................................................................................$3.50

LOSA6350 #4 and 1/8” Hardened Washers ...............................................................................................................$2.50

LOSA6401 1/16” Pins for Wheels and Gears .............................................................................................................$1.25

LOSA6903 3/16” x 3/8” Teflon™-Sealed Bearings (2) .............................................................................................. $5.50

LOSA6908 1/2” x 3/4” Ball Bearings w/Teflon Seal (2) ........................................................................................ $14.25

LOSA6909 1/8” x 3/8” Ball Bearings (‘XX’ Trans) (2) ................................................................................................. $6.00

LOSA7007 Desert Truck Chrome Front Wheels w/spacer(pr) ..............................................................................$8.99

LOSA7107 Desert Truck Chrome Rear Wheels (pr) ..................................................................................................$8.99

LOSA7679B Desert Truck A/T Tires (Blue) w/Foam ................................................................................................. $19.99

LOSA9941 Bearing Spacer/Wheel Washer ................................................................................................................$9.95

LOSA17679B Desert Truck A/T Tires (Blue) mounted on Front Wheels ............................................................. $28.99

LOSA27679B Desert Truck A/T Tires (Blue) mounted on Rear Wheels ............................................................... $28.99

LOSB8057 Desert Truck Painted Body w/Stickers (Black) .................................................................................. $38.99

LOSB8058 Desert Truck Painted Body w/Stickers (Burgundy) ........................................................................ $38.99

LOSB8059 Desert Truck Painted Body w/Stickers (White) ................................................................................ $38.99

LOSB8060 Desert Truck Painted Body w/Stickers (Blue) ................................................................................... $38.99

LOSB8061 Desert Truck Clear Body w/Stickers ..................................................................................................... $28.99

LOSB9998 Desert Truck LED Light set ...................................................................................................................... $18.99

LOSB9999 1/10th LM-32K Motor ............................................................................................................................... $19.99

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Optional Parts for the Desert Truck

Part Number Description Price

LOSA2961 CVD Rebuild Kit: Desert Truck ...................................................................................................................

$5.99

LOSA3065 Silicone Differential Compound (Optional) ......................................................................................... $2.50

LOSA3927 90-Tooth, 48-Pitch Spur Gear for Double-Disk Slipper ...................................................................$3.50

LOSA3929 86-Tooth, 48-Pitch Spur Gear for Double-Disk Slipper ...................................................................$3.50

LOSA3930 84-Tooth, 48-Pitch Spur Gear for Double-Disk Slipper ...................................................................$3.50

LOSA3932 78-Tooth, 48-Pitch Spur Gear for Double-Disk Slipper ...................................................................$3.50

LOSA3933 76-Tooth, 48-Pitch Spur Gear for Double-Disk Slipper ...................................................................$3.50

LOSA4060C Desert Truck Chrome Front Bumper & Skid Plate ........................................................................... $11.99

LOSA4061C Desert Truck Chrome Roll Cage Set ..................................................................................................... $17.99

LOS4112 48 Pitch Pinion Gear,12T .............................................................................................................................$4.00

LOS4113 48 Pitch Pinion Gear,13T .............................................................................................................................$4.00

LOS4114 48 Pitch Pinion Gear,14T .............................................................................................................................$4.00

LOS4115 48 Pitch Pinion Gear,15T .............................................................................................................................$4.00

LOS4117 48 Pitch Pinion Gear,17T .............................................................................................................................$4.00

LOS4118 48 Pitch Pinion Gear,18T .............................................................................................................................$4.00

LOS4119 48 Pitch Pinion Gear,19T .............................................................................................................................$4.00

LOS4120 48 Pitch Pinion Gear,20T .............................................................................................................................$4.00

LOS4121 48 Pitch Pinion Gear,21T .............................................................................................................................$4.00

LOSA5062 1.2” Titanium Nitride Shock Shaft ...........................................................................................................$7.00

LOSA6912 3/32” x 3/16” Bearings for Steering (XX, XXT, XXX,T) ..................................................................... $19.95

LOSA7058 320 Series Spokez Chrome Wheel, Front (2) .................................................................................... $10.99

LOSA7158 320 Series Spokez Chrome Wheel, Rear (2) ...................................................................................... $10.99

LOSA7684B 320 Series Road Weapon Tires, Fr/R Blue (2) .................................................................................... $17.99

LOSA7684V 320 Series Road Weapon Tires, Fr/R Violet (2) ................................................................................. $17.99

LOSA9713 Graphite Kickplate, Bulkhead, & Steering Brace ............................................................................ $16.00

LOSA9831 Graphite/Composite Rear Pivot Plate (XXX, XXX-T) .........................................................................$6.50

LOSA9940 Aluminum Hardcoated Suspension Balls ............................................................................................$3.95

LOSB9861 7.4V 5000mAH 2-Cell LiPo ..................................................................................................................... $129.99

LOSB9900 7.2V 3800mAH 6-Cell Stick Pack .......................................................................................................... N/A

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Use this page to record tuning information

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Use this page to record tuning information

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©2008 Losi, A division of Horizon Hobby, Inc.

Not responsible for typographical errors.

All pricing subject to change without notice.

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800-0359

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