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In setup mode, the SPHERE stores every step when you press the SET button. All the settings will be stored in 

the speed-controls memory even if the speed-control will be disconnected from the battery.

SET-UP PROCEDURE 

Throttle travel

High ATV, EPA

High ATV, EPA

maximum

Brake travel

Low ATV, EPA, ATL

maximum

Throttle exponential

Throttle exponential

EXP, EXPO

start with 0

Neutral trim

SUB Trim

centre

Throttle trim

centre

Serve reverse

Throttle reverse

any setting, don‘t change after set-up procedure!

any setting, don‘t change after set-up procedure!

TRANSMITTER SETTINGS

Setup the following basic functions on your transmitter (if available):

If your transmitter doesn‘t offer any of above functions, it‘s already in „basic setup“ mode.

• Ensure, that the speed-control is not connected to the drive battery and is switched off.

• Remove motor pinion or ensure that the wheels of the model are free to rotate.

• Switch the transmitter on and set the transmitter throttle stick to neutral.

• Connect the speed-control to the battery and switch the unit on.

• Press the SET button for at least 3sec, using the supplied plastic screwdriver.

• The SET LED fl ashes red and indicates that you entered setup mode (it continues fl ashing red until the 

setup is completed).

• Leave the throttle stick at neutral and press the SET button once.

  -> neutral setting is now stored. The MODE LED fl ashes green and the motor beeps.
• Hold the transmitter stick at full throttle and press the SET button once.

  -> the full-throttle setting is now stored and the MODE LED fl ashes red.
• Hold the transmitter stick at full brake and press the SET button once.

  -> the brake setting is now stored. The MODE- and SET-LED glow red.

• This completes the setup procedure and your SPHERE is ready to use.

• If you make a mistake during the setup procedure, don‘t worry: disconnect the battery for about 10sec and 

start again from the fi rst step.

• At the end of each run disconnect the drive battery and switch off the transmitter afterwards.

• At the start of each run switch on the transmitter fi rst, then connect the drive battery.

FUNCTION

STATUS

MODE LED

SET LED

Neutral and normal brake

off

red

Neutral and automatic brake

red

off

Forward

partial throttle

partial throttle

green

green

off

Forward

full throttle

green

green

red

Brake/Reverse

partial brake/reverse

partial brake/reverse

red

off

Brake/Reverse

full brake/reverse

red

red

CHECKING THE FUNCTIONS:

If you run through the following functions with the throttle stick, you can check on the LED‘s that everything 

is setup correctly.

REPAIR PROCEDURES / LIMITED WARRANTY

All products from LRP electronic (hereinafter called “LRP”) are manufactured according to the highest quality standards. LRP gua-

rantees this product to be free from defects in materials or workmanship for 90 days from the original date of purchase verifi ed by 

sales receipt. This limited warranty doesn’t cover defects, which are a result of normal wear, misuse or improper maintenance. This 

applies among other things on:

  • 

Cut off original power plug or not using reverse polarity protected plugs

  • 

Receiver wire and/or switch wire damaged

  • 

Mechanical damage of the case

  • 

Humidity/Water inside the speed control

  • 

Mechanical damage of electronical components/PCB

  • 

Soldered on the PCB (except on external solder-tabs)

  • 

Connected speed-control with reversed polarity

With Limited Lifetime Warranty products, the warranty terms on the Limited Lifetime Warranty card do also apply.

To eliminate all other possibilities or improper handling, fi rst check all other components and the trouble shooting guide before you 

send in this product for repair or warranty. Products sent in for repair, that operate perfect have to be charged with a service fee.

By sending in this product, you assign LRP to repair the product, if it is no warranty or Limited Lifetime Warranty case. The original 

sales receipt including date of purchase needs to be included. Otherwise, no warranty can be granted. For quick repair- and return 

service, add your address and detailed description of the malfunction.

Our limited warranty liability shall be limited to repairing the unit to our original specifi cations. In no case shall our liability exceed the 

original cost of this unit. Because we don’t have control over the installation or use of this product, we can‘t accept any liability for any 

damages resulting from using this product. By installing or operating this product, the user accepts all resulting liability.

The specifi cations like weight, size and others should be seen as guide values. Due to ongoing technical improvements, which are 

done in the interest of the product, LRP does not take any responsibility for the accuracy of these specs.

LRP-DISTRIBUTOR-SERVICE:

  • 

Package your product carefully and include sales receipt and detailed description of malfunction.

  • 

Send parcel to your national LRP distributor.

  • 

Distributor repairs or exchanges the product.

  • 

Shipment back to you usually by COD (cash on delivery), but this is subject to your national LRP distributor‘s general policy.

SYMPTOM

CAUSE 

REMEDY

Servo is working, no motor function.

Speed-control plugged in incorrectly

Plug speed-control in Ch 2

Overload protection activated

Allow speed-control to cool down

Wiring problem

Check wires and plugs

Motor defective

Replace motor

BM

 - Motor brushes stuck

BM

BM

Check that brushes are moving freely

Speed-control defective

Send in product for repair

No servo and no motor function.

Speed-control plugged in incorrectly

Plug speed-control in with correct polarity

Crystal defective

Replace components one by one.

Receiver defective

Transmitter defective

Speed-control defective

Send in product for repair

Motor runs in reverse when accelera-

ting forward on the transmitter.

Throttle stick polarity at transmitter changed 

while driving

Repeat set-up procedure

BM

 - Motor connected incorrectly

BM

BM

Connect motor correctly

Insuffi cient performance. 

E.g. poor brake power, reverse power, 

topspeed or acceleration..

Motor pinion or gear ratio too long.

Use smaller motor pinion/shorter gear ratio

Transmitter settings changed after set-up

Repeat set-up procedure

BM

 - Motor worn out

BM

BM

Maintain motor

Motor defective

Replace motor

Speed-control defective.

Send in product for repair

Speed-control overheats or switches 

off frequently.

No heatsink installed

Install heatsink

Motor stronger than motorlimit or input voltage 

higher too high

Use only motors within motolimit and use 

batteries according to the specifi cations of the 

speed-control

Motor pinion or gear ratio too big

Use smaller motor pinion/shorter gear ratio

Drive train or bearing problems.

Check or replace components.

Model used too often without cool-down periods

Let speed-control cool down after every run

Extreme conditions

Use additional cooling fan

Motor never stops, runs at constant 

slow speed

Transmitter settings changed after set-up

Repeat set-up procedure

Humidity/water in speed-control

Immediately unplug and dry speed-control

Speed-control defective

Send in product for repair

Radio interference

BM

 - Motor suppressors not suffi cient

BM

BM

Solder capacitors to motor

Receiver or antenna too close to power wires, 

motor, battery or speed-control.

Receiver aerial too short or coiled up

See „Installation Tips“ and „Installation“

Receiver defective, too sensitive; transmitter 

defective, transmitter output power too low, 

servo problem

Replace components one by one

Only use original manufacturers crystals

Poor battery connection

Check plugs and connecting wires

Transmitter batteries empty

Replace / recharge transmitter batteries at 

regular intervals

Transmitter antenna too short

Pull out antenna to full length

EXPLANATION: 

If there´s no remark, the cause can be either with brushless and/or brushed motors. If „BM“ 

is indicated, the cause only occurs when brushed motors are used.

TROUBLESHOOTING GUIDE 

AVAILABLE MODES and PROGRAMMING THE MODES:

The SPHERE features 4 different modes, which enable you to adjust motor type and application, motor power/

driving feel, initial-brake and automatic brake to match YOUR special requirements precisely.

MODE.1 (speed-control type selection): 

The SPHERE contains 4 speed-controls in 1 and „Mode.1“ allows you 

Mode.1“ allows you 

to select between the different „types“ of speed-controls, which are built into the SPHERE.

MODE 2 (drive-/punch-control): 

Allows you to adjust the SPHERE to your likes. Either you run on slippery or 

PHERE to your likes. Either you run on slippery or 

high-traction surfaces, the SPHERE has a profi le for you! Contains „Sportsman“ profi le with limited maximum 

profi le with limited maximum 

RPM of 24‘000 RPM, „Low Grip“ profi le with great driveability and „Modifi ed“ for unlimited power.

MODE.3 (initial brake): 

Allows you to set a certain level of “hand-brake effect“, i.e. you can vary the minmum 

brake effect when you apply the brake.

MODE.4 (automatic brake): 

Allows you to set a slight braking action, which is applied in the neutral range. 

This enables you to simulate the feel of a brushed motor and also hold the throttle on longer when entering a 

turn. Your car also has more front traction with this setting.

Tip: 

With Value 1, a brushless motor will have the 

same „natural“ slowdown as a brushed motor without automatic brake.

SPECIAL FEATURES 

 Motor Type

 Motor Type

MODE LED

Value 0

Value 1

Value 2

Value 3

  brushless

fl ashes green/red (same time)

None

SOFT

Medium

Hard

  brushed

not available

Fixed

--

--

--

 Motor Type

 Motor Type

MODE LED

Value 0

Value 1

Value 2

Value 3

  brushless

fl ashes green/red (alternate)

Linear

SMOOTH

Medium

Aggressive

  brushed

not available

--

Fixed

--

--

 Motor Type

 Motor Type

MODE LED

Value 1

Value 2

Value 3

  brushless

fl ashes red

Sportsman

Low Grip

MODIFIED

  brushed

fl ashes red

--

Low Grip

Modifi ed

 Motor Type

 Motor Type

MODE LED

Value 1

Value 2

Value 3

Value 4

  brushless

fl ashes green

FWD/RVS

Fwd/Brk

--

--

  brushed

fl ashes green

--

--

Fwd/Rvs

Fwd/Brk

• How to get into „PROGARAMMING THE MODES“: -> Press MODE button for at least 3sec.

• How to check the stored values: Count the number of fl ashes of the red SET LED 

  (one fl ash equals value 1, two fl ashes value 2, etc.).
• How to change the value: Press SET button to increase value by one step.

• How to get to the next Mode: Press MODE button once.

• Table of settings, values and modes: See below (grey-shaded/bold areas show „works default settings“).

INITIAL-/AUTOMATIC-BRAKE DEPENDENCY:

Only this unique feature will give you perfect brake-control. By not allowing lower initial-brake values then auto-

matic-brake values, it ensures that the brake doesn‘t become less when you manually brake on the transmitter. 

This means, for example, if you have set automatic-brake on value 2 that you can not adjust value 0 or 1 on 

initial-brake (the set automatic-brake value becomes the minimum initial-brake value!).

WORKS DEFAULT SETTINGS:

LRP speed-controls are supplied factory-adjusted. The defaults are the grey-shaded/bold areas in the Value 

columns above. If you loose track of the modes during the set-up procedure, you can reset the speed-control 

to the LRP works default settings. With the transmitter switched on, hold the SET button pressed while you 

switch on the speed-control. This action returns the unit to the LRP works default settings.

CHANGING MODE SETTINGS WITHOUT THE TRANSMITTER:

At race events you usually do not have access to your transmitter. In this situation it is possible to adjust the 

MODE settings without the transmitter signal. All you have to do is disconnect the receiver lead from the recei-

ver and connect the drive battery. You can now change the MODE settings as described in this chapter.

SENSORED BRUSHLESS TECHNOLOGY:

The SPHERE speed-control uses the sensored brushless technology to communicate with the brushless motor. 

This allows the SPHERE to obtain perfect knowledge of the brushless motor’s magnet position. This means 

perfect motor control at high and low RPM‘s, as well as perfect brake control. The sensored brushless motor 

feels just as smooth to drive as the brushed motor!

MULTI-PROTECTION SYSTEM, 4-way Protection

This unique monitoring software is the perfect protection for the SPHERE speed-control against short-circuits 

(motor),  overload  and  overheating.  If  your  speed-control  is  ever  faced  with  overload,  the  motor  function  is 

switched off for protection and the SET LED will fl ash to indicate the overload, although the steering function is 

maintained. Wait a few minutes to allow the speed-control to cool down. 

Should you accidentally select one of the brushless motor modes while a brushed motor is connected to the 

speed-control, or vice versa, the SPHERE will warn you of this error by turning on the red SET LED and alterna-

tively fl ashing red/green on the MODE LED. If the speed-control switches off frequently, either the motor used 

is too strong, the motor pinion is too big or you are using full brake too often. You can improve this by using the 

supplied heatsink or by obtaining the optional LRP fan (#82500).

POWER CAPACITORS:

We recommend the use of a power capacitor (as included in LRP‘s brushless cooling set #82500), when using 

the SPHERE speed-control. Power Capacitors improve punch and offer additional protection for the speed-cont-

rol. Simply connect the power capacitors at BAT+ (Red) and BAT- (Black) on the SPHERE‘s soldering tabs.

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