High ATV, EPA (throttle travel) - maximum
Low ATV, EPA, ATL (brake travel) - maximum
EXP, EXPO (exponential) - start with 0
SUB trim (neutral trim) - centre
TH trim, coast brake - centre
Throttle reverse (servo reverse) - any setting; must not be changed after
completion of set-up procedure.
TRANSMITTER SETTINGS:
Asymmetrical stick travel is possible (2/3 throttle - 1/3 brake)
If your transmitter does not feature these set-up functions, it is already in “basic set-up” mode.
CHECKING THE FUNCTIONS:
You can check the following functions by watching the reaction of the LED:
• Check that the speed control is not connected to the drive battery, and is switched off.
• Remove the motor pinion, or ensure in some other way that the wheels of the model are free to rotate.
• Switch the transmitter on.
• Set the transmitter throttle stick to neutral.
• Connect the speed control to the battery and swith the speed control on.
• Hold the set-up button pressed in for at least 3 seconds using the plastic screwdriver supplied.
In case of problems first check the trouble shooting guide or contact your hobby shop or LRP-importer. In
case of damage, repair fees are normally far below the recommended retail price of a new unit. Hobby
shops are not authorized to replace speed controls thought to be defective.
Warranty can only be accepted if it is claimed by the customer on the warranty sheet and the control sheet
and the original sales receipt are included.
For quick repair and return we definitely need your address, detailed description of the malfunction and the
original sales receipt. Repair may be refused without sales receipt.
To guarantee a proper repair, cut off or worn receiver plugs, wires and switches will be replaced and
charged in any case. Any speed control treated severely with silicone or anything similar inside, might not
be repairable.
Speed controls sent in for repair that operate perfect normally will be charged with a service fee. Therefor
first check with the trouble shooting guide.
LRP guarantees this speed control to be free from defects in materials or workmanship for 90 days from the
original date of purchase verified by sales receipt.
This warranty doesn’t cover: suitability for specific operation, incorrect installation, components worn by
use, application of reverse or improper voltage, shipping, tampering, misuse like any soldering inside the
unit, poor installation, replacing of wires on the board, connection to electrical components not mentioned
in the instructions, mechanical damage, immersion of water and cutting off the original wires, plugs,
connectors and switches.
Our warranty liability shall be limited to repairing the unit to our original specifications. Because we have no
control over the installation or use of this product, in no case shall our liability exceed the original cost of
this unit. We can't accept any liability for any damage resulting from using this product. By the act of
installing or operation this speed control, the user accepts all resulting liability.
REPAIR PROCEDURES/WARRANTY
SET-UP PROCEDURE DESCRIPTION OF FEATURES
Set the basic functions on your transmitter as follows (if present):
In set-up mode the Quantum Sport-series speed control stores every step when you press the Set-up button.
All the settings are stored in the unit even when the speed control is subsequently disconnected from the
battery.
Start with the transmitter set-up procedure:
• The set-up LED flashes green and indicates that you are in set-up mode.
• Leave the throttle stick at neutral and press the set-up button.
• The neutral setting is now stored.
• Move the transmitter stick to full-throttle and press the set-up button with the stick still in this position.
• The full-throttle setting is now stored.
• Move the transmitter stick to full brake and press the set-up button with the stick still in this position.
• The set-up LED now glows green constantly.
• Your Quantum Sport series speed control is now completely set-up and ready to run.
• If you make a mistake during the set-up procedure, don’t worry: disconnect the battery for
about 10 seconds and start again from the first step.
• At the end of each run switch the speed control off, disconnect the battery, and only then
switch off the transmitter. At the start of each run switch on the transmitter first, then
connect the drive battery, and finally switch the speed control on.
TROUBLE-SHOOTING GUIDE
FUNCTION STATE LED GLOWS
Neutral dull green
Forward part-load bright green
Forward full-throttle off
Brake part-load bright green
Brake full brake off
Temperature protection active flashes bright green
WHAT SHALL I DO?
• Send parcel to your national distributor.
• Distributor repairs/replaces the Speed Control.
• Shipment back to you usually by COD /cash on delivery), but is suject to your distributers
general policy.
• Package your Speed-Control carefully.
Ultra High Performance using the latest SMD-MOS FETs
The internal resistance of these new FET transistors is about 2/3 lower.
Extended run-time
The lower internal resistance extends running times.
Ultra-powerful braking effect
The Quantum Sport series features an ultra-powerful fully proportional EMF brake which is nevertheless easy to
control on slippery surfaces. Energy is charged back into the drive battery every time you apply the brake.
Variable traction aid (APC)
Cars fitted with powerful “tuning” motors can easily run out of control when accelerating on slippery tracks. LRP’s
unique APC variable traction aid effectively prevents unwanted skidding and improves the car’s control on every
surface.
SETTINGS:
Maximum power >Rotate control pot to right-hand stop (plus). At the maximum APC setting the
unit’s overload protection may be triggered, depending on the motor in use,
and in this case your speed control will switch off prematurely. If this should
happen, turn the control pot to the left by about 1/3 turn.
Slippery surfaces >If your car spins, turn the control pot to the left (minus) until you have full
control of your car when accelerating.
Maximum APC setting >If you select this setting to cope with an extremely slippery surface,
remember to turn the control pot back to the right-hand stop at the end of the
session, so that you can start with maximum power on the next track.
The APC settings have no effect on the car’s maximum speed.
Short protection and safety of full warranty
The Quantum speed control’s integral Multi-Protection software provides a unique level of protection against short
circuit (motor), overload and overheating. If any of these overload situations occurs, the motor function is
switched off to protect the circuit, although the steering function is maintained. The bright red / green LED
flashes to indicate an overload situation.
Allow the speed control to cool down, and the throttle function will be switched on again automatically.
Check for the cause of the overload: is the motor too powerful? Is the motor pinion too large? Is the power train
stiff? Are you constantly switching from full power forward to full power in brake?
Small in size, fits anywhere + Plug-in and drive
The small size of Quantum speed controls allows them to be installed anywhere in the model. The factory-fitted
standard connectors provide an easy means of connecting it to battery and motor.
Super-light for improved chassis handling
The light weight of the Quantum speed control allows you to lower your model’s Centre of Gravity for improved
roadholding.
