10. TROUBLESHOOTING GUIDE
7. SPECIAL FEATURES
Launch Control:
The LRP IPC V8.1 GEN Launch Control gives you a crucial advantage
at the start of a race. In this mode the response time of the speed-control is shortened (half-throttle
on the transmitter corresponds to full-throttle on the speed-control) and the set current limiting value
is doubled for the start of the race. The first time you reduce throttle (first turn) the LRP IPC V8.1 GE-
N speed-control automatically reverts to the normal racing program. Activating the Launch
Control:
Hold trigger of transmitter at full brake for 5sec before start. Ready and active!!!
Improved Brake Feel:
The LRP IPC V8.1 GEN speed-control features a fully propor-
tional brake which can be applied very smoothly to maintain good grip on slippery surfaces. Thanks to
the Advanced Digital technology, it was possible to improve the brake feel of the LRP IPC V8.1 GENE-
speed-control even more.
Advantages:
• Smooth, proportional braking
• Superior braking power
• Battery recharge during braking
If the braking power is too strong for your driving style and conditions, you can reduce it by adjusting
servo travel at the transmitter.
Forward/Brake:
Uncompromising and outstanding performance for top level competition was the
target! Therefore the LRP engineering team developed a pure forward/brake competition speed-control
without reverse function.
IceDrive Design
:
LRP’s secret IceDrive Design results in lower speedo temperature under all
racing conditions. Sorry, no further details to be disclosed. Simply a step ahead of the competition!
Multi-Protection System, 3-way protection:
The perfect protection against short-cir-
cuits (motor), overload and overheating. If your speed-control faces one of these problems, the motor
function will be shut-off for protection and the LED will flash. The steering function will be maintained.
Let everything cool down for a few minutes.
If the speed-control switches off frequently, either the used motor is too strong, the motor pinion is
too big or you are using full brake too often. You can improve this if you make additional cooling slots
in the body.
All products from LRP electronic GmbH (hereinafter called “LRP”) are manufactured according to the
highest quality standards. LRP guarantees this product to be free from defects in materials or work-
manship for 90 days (non-european countris only) from the original date of purchase verified 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
To eliminate all other possibilities or improper handling, first check all other components and the trouble
shooting guide, if available, 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 de-
scription of the malfunction.
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. Therefore using this product is at owner‘s risk. Our
limited warranty liability shall be limited to repairing the unit to our original specifications. In no case
shall our liability exceed the original cost of the unit. By installing or operating this product, the user
accepts all resulting liability.
The specifications 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.
With Limited Lifetime Warranty products, the warranty terms on the Limited Lifetime Warranty card
do also apply.
LRP-Distributor-Service:
• Package your product carefully and include sales receipt and detailed description of malfunc-
tion.
• 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.
Programming with chips:
Example:
Chip 65 Ampere
Power programm #3
Programming with limiter potentiometer:
(#8110)
The limiter potentiometer also
provides 4 program settings and
additionally a variable current li-
miting within the range of 0 - 100
Ampere.
Racing Class
Current
Limiter
Power
Programm
2WD
65A
2
Truck
80A
3
4WD
80A
3
Pro 10
65A
3
1/12
50A
2
Touring Car
Touring Car
80A
3
Program
Acceleration Driveability
Battery
Efficiency
1
O
0000
0000
Very gentle
Very gentle
2
OO
000
000
Gentle
3
OOO
00
00
Power+Efficiency
Power+Efficiency
4
OOOO
0
0
Max. Power
Start with the following settings:
Current Limiter Programs:
REPAIR PROCEDURES /
LIMITED WARRANTY
8. BRAKE ADJUSTEMENT
Normal brake: standard characteristics (for normal to slippery conditions):
Rotate the brake po-
tentiometer fully to the left. This produces a linear braking effect over the full stick travel, and provides
perfect vehicle control during braking.
Soft brake (for extremely slippery surfaces):
Rotate the brake potentiometer fully to the left. If you
still need a reduction in braking power, use the LOW ATV, EPA or ATL function (reduced brake travel) on
your transmitter to reduce the braking power.
Aggressive „hand-brake“:
Turn the brake potentiometer to the right. This allows you to control your
vehicle aggressively and throw it around corners. Turn the brake potentiometer to the right and the
brake becomes more aggressive; turn it to the left and it becomes more gentle.
Note that maximum braking power is unchanged regardless of the position of the brake potentiometer.
If you wish to adjust overall braking power you should reduce the travel of the brake function on your
transmitter.
Automatic brake:
As soon as you move the throttle stick to neutral, the speed-control brakes auto-
matically, which allows even tighter turns. You can adjust the power of the automatic brake at neutral
to any setting within the range of 1% (brake potentiometer fully left) and 60 % (brake potentiometer fully
right). The maximum braking power will not be affected.
Switching the brake programs:
Applies if you change from normal to automatic brake and vice versa:
Switch speed-control off -->
Press and hold SET button
--> Switch speed-control on (while
SET button is pressed!) --> Brake programm changed.
The chosen brake programm can be determined by the status of the LEDs (see „CHECKING THE FUNC-
TIONS“ in section 6).
9. DIGITAL ACTIVE CURRENT LIMITER
The LRP IPC V8.1 GEN speed-control can be adjusted to meet the exact requirements of your
model and the track. To activate current limiting you must install one of the plug-in chips (supplied in
the values of 30A, 50A, 65A, 80A and 120A) or the infinitely variable limiter potentiometer (#8110).
Without one of the chips or the limiter potentiometer fitted, maximum power is always available and
the current limiting is not active.
• The orientation of the plug-in chip determines the power program which is activated (see illustrati-
on). As soon as you open the throttle, the basic current limiting value (value on the chip) is in force, and
after a defined period of acceleration (selected with the power program) the speed-control intelligently
increases the maximum current, and repeats the process every time you resume acceleration.
• The various programs represent a method of fine-tuning the speed-control’s response. The LRP IPC
V8.1 GEN always provides a linear characteristic curve and superior battery efficiency, re-
gardless of the program you choose.
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
Motor brushes stuck
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.
Motor connected incorrectly
Connect motor correctly
Insufficient performance.
E.g. poor brake power, topspeed or
acceleration..
Motor pinion too big or gear ratio too long.
Use smaller motor pinion/shorter gear ratio
Transmitter settings changed after set-up
Repeat set-up procedure
Motor worn out
Maintain motor
Motor defective
Replace motor
Speed-control defective.
Send in product for repair
Speed-control overheats or switches
off frequently.
Motor stronger than motorlimit or input voltage
too high
Use only motors and batteries which are within
the specifications of the speed-control
Motor pinion too big or gear ratio too long.
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
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
Motor suppressors not sufficient
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
Transmitter antenna too short
Pull out antenna to full length
Speed-control looses settings
Receiver problem (especially with some 2.4GHz
systems)
Use a power capacitor on the receiver
