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®

®

The Losi MTX Pro DSM

®

 radio system included with the Speed-T 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 MTX Pro 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

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

Transmitter

The Losi Pro transmitter has several adjustments available to increase your enjoyment of the Speed-T 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 Speed-T.

4. 

Throttle Trim

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

5. 

End Point Adjustment Pots

 – Adjusts the amount of servo movement for steering and throttle/brake (which should be set at 

4:00 for proper ESC function).

From Left to Right they adjust the following:

• 

Right Steering

• 

Left Steering

• 

Throttle

• 

Brake

Using the End Point

Adjustments

: All the adjust pots increase throw if turned clockwise and decrease throw turned counter-clockwise.

Steering

: First set the steering trim so the Speed-T goes straight without touching the steering wheel. Lift the vehicle off the ground 

and turn the steering wheel to the right. Using the enclosed mini screw driver to adjust the pot marked “right” back and forth stopping 

when the wheels can turn to the right no further.
Repeat this process for the pot marked “left.”

Note: If you feel the vehicle turning more in one direction than the other you can use these pots to reduce the movement of 

the side turning more.

The Throttle and Brake pots should be set just short of the full movement of each pot. Turn each to full and then back off slightly. If you 

should be required to adjust throttle and brake endpoints, it is required to reset (calibrate) the transmitter and ESC. (See Page 18 for 

more details.)

Receiver 

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

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 Bind, channel one, channel two and auxiliary slots.
The bind slot is used to bind the transmitter to the receiver. The Losi MTX Pro 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 re-bind your transmitter and 

receiver should the need arise.

Losi MTX Pro Radio System

Summary of Contents for Speed T

Page 1: ...1 Not responsible for errors All prices subject to change without notice Losi a Division of Horizon Hobby Inc...

Page 2: ...ting 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 consid...

Page 3: ...instructions and safety precautions supplied by the battery manufacturer This applies to the selected LiPo charger as well Supplied tools 2 Way wrench Radio Adjusting Screw Driver Transmitter Receive...

Page 4: ...2 4GHz DSM Receiver Rear Body Mount Xcelorin Brushless Motor Wheelie Bar Gear Slipper Cover Steering Trim ST Trim Throttle Trim TH Trim Throttle Brake Trigger Steering and Throttle End Point Adjustmen...

Page 5: ...The less expensive batteries will generally lose their performance after continuous use in this high drain application We do not recommend the use of batteries referred to as Stick Packs they are comm...

Page 6: ...ion of your Speed T LOSB9613 Losi EC3 Charge Adaptor with Banana Plugs Installing Batteries Transmitter Remove the battery cover from the bottom of the transmitter by sliding it away from the base of...

Page 7: ...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 INCLUDE...

Page 8: ...and decrease throw turned counter clockwise Steering First set the steering trim so the Speed T goes straight without touching the steering wheel Lift the vehicle off the ground and turn the steering...

Page 9: ...ust 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 Overview The Losi Xcelorin electronic...

Page 10: ...Green LED flash Profile 3 Yellow Blue Green and Red Flash default setting 6 To make a change quickly press the setup button which will advance you to the next profile 7 When you are finished press and...

Page 11: ...loose wheel nut or anything loose on the steering assembly The vibrations of running at high speeds tend to loosen screws and nuts The Speed T s gearing choice from the factory IS NOT meant for runni...

Page 12: ...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 mak...

Page 13: ...onally you may want to raise the front ride height to get a little quicker steering reaction but be careful as this can also make the Speed T easily flip over Every driver likes a little different fee...

Page 14: ...on and allow more speed Use the following formula to calculate the overall ratio for combinations not listed on the gear chart Spur Gear Size Pinion Gear Size X 2 43 Final Drive Ratio When using highe...

Page 15: ...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 manu...

Page 16: ...cles Profiles The Xcelorin ESC has three 3 preset profiles Each profile contains the individual ESC settings that are collectively called a profile There is a beginner profile an expert profile and a...

Page 17: ...XXX XXX T 6 00 LOSA4132 Front Bumper Motor Guard Speed T 6 99 LOSA4133 Front Rear Body Mounts Set Speed T 4 99 LOSA4134 Wheelie Bar Set Speed T 9 99 Part Number Description Price LOSA4136 Front and R...

Page 18: ...T 19 95 LOSA6951 3 32 Carbide Diff Balls 12 10 95 LOSA9713 Graphite Kickplate Bulkhead Steering Brace 16 00 LOSA9831 Graphite Composite Rear Pivot Plate XXX XXX T 6 50 LOSA9940 Aluminum Hardcoated Su...

Page 19: ...LOSA6903 LOSA9941 LOSA6401 LOSA2960 LOSA4015 LOSA4170 LOSA4170 LOSA6206 LOSA4122 LOSA6210 LOSA6204 LOSA6074 LOSA6100 LOSA1620 LOSA6350 LOSA6229 LOSA4224 LOSA1620 LOSA2164 LOSA4125 LOSA6306 LOSA1022 LO...

Page 20: ...38 39 Use this page to record tuning information Use this page to record tuning information...

Page 21: ...40 2008 Losi A division of Horizon Hobby Inc Not responsible for typographical errors All pricing subject to change without notice 800 0349 12660 1 Revised 08 09...

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