LRP S8 BXe, Instruction Manual, Page: 54 / 60

8. MODE PROGRAMMING 9. SPECIAL FEATURES
REPAIR PROCEDURES / LIMITED WARRANTY
10. TROUBLESHOOTING GUIDE
The SPX8 features 4 modes which enable you to adjust it 100% to YOUR special requirements. The factory settings
are shown in grey colour.
MODE.1 (AutoCell System):
we recommend using value #2 if you are using NiMH cells, which disengages
the LiPo protection.
MODE LED #1 #2
Yellow LiPo NiMH
MODE.2 (Drive Selection):
the SPX8 can be adjusted for all applications, no matter if you want reverse,
electronic brakes or neither you can set it up accordingly!
MODE.3 (Power Profiles):
allows you to adjust the SPX8 to your likes. Either you run on slippery or high-
traction surfaces, we have incorporated a profile for you!
Higher value means more overall power and more aggressive throttle response.
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.
For brushless motors you achieve the same natural slowdown as a brushed motor with no autobrake when you
set value 1.
• How to get into „programming the modes“

Press MODE button for 3 or more seconds.
• How to check the stored values

Count the number of flashes of the blue SET-LED
(* = value 1 | ** = 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.
• How to leave the programming mode

If you are in MODE.4, press the MODE button one more
time, which will also store the settings!
Important: do not turn the switch off before leaving Mode 4 (by one more press of MODE button) as otherwise your
recent changes won‘t be stored in the memory of the SPX8 .
Table of settings, values and modes: see below (grey-shaded values show „works default settings“)
MODE LED #0 #1 #2 #3 #4
Yellow/Red
(same time)
none
Going from lowest to highest automatic brake setting
(value 1 = minimum / value 4 = maximum)
Power Profiles:
our worlds-winning profiles have been altered for the special requirements of 1:8 brushless
buggies and truggies now! Depending on the status of the car (start, acceleration, full speed) the software calcu-
lates the perfect motor management by adjusting current limiter, throttle curve and more! Higher value means more
overall power and aggressive response.
AutoCell System:
Ready for the next battery technology – LiPo batteries! LRP’s exclusive and smart AutoCell
System ensures that LiPo batteries can be used safely without accidentially deep-discharging of the cells. The
motor function will be shut-off and the SET LED will flash if the system recognises very low battery voltage.
The factory default is #1, which is „LiPo mode“!
Pure Brushless Competition Design:
uncompromising and outstanding performance for top level compe-
tition was the target for the SPX8 ! Therefore the LRP engineering team developed a pure brushless competition
speed-control. There is no brushed motor operation possibility
Internal-Temp-Check System 2:
allows you to read-out the maximum internal temperature that the speedo
reached. You can convienently read-out the temperature back in the pits since it remains stored until you turn it
on the next time regularly (which will reset the memory). This new feature allows you to accurately check if all is
running well or if you‘re close to shutdown already.
How to read-out the temperature:
 Switch at „OFF“ position.

Keep MODE button pressed while you turn switch to „ON“ (then release button)
 SET LED will start to flash blue (MODE LED‘s are off), now count the number of flashes.
 The higher the number of flashes, the hotter the speedo ran, shutdown will occur at 10 flashes.

Every flash below 10 equals to 5°C temperature decrease.
Drive Selection (Brake- & Reverse-Function):
as another Worlds first the SPX8 includes fully adjustable
drive selection. The requirements and preferences for 1:8 buggy and truggy-brushless setups can be rather diffe-
rent and therefore we allow maximum flexibility!
You can disable reverse, if you plan on using forward/brake only as you‘re used to from your nitro vehicle. But
addtionaly you can also disable the speed-controls brake function in case you prefer using your standard nitro cars
brake system with a brake servo, for that operation you need a separete „Y-wire“ which allows you to connect both
the speed-control and the brake servo to the receivers channel 2.
X-Brake:
the best got perfected further! A superlinear feeling with an even stronger pushbrake and fine autobrake
steps for precise adjustment!
Team advise: A good starting point for the brake setting on your radio is 80%. Make sure you do the radio-setup
with all settings on the radio on 100%!
Changing Mode settings without the transmitter:
At race events you usually do not have access to your
transmitter, but never mind since you can simply disconnect the receiver lead from the receiver and change the
MODE settings as described in section 7 „Mode Programming“.
Works-Default-Settings:
All LRP speed-controls come factory-adjusted (defaults are grey-shaded above).
If you loose track of the modes, you can restore the works default settings. With the transmitter switched on,
hold the SET button pressed while you switch on the speed-control. This returns the unit to the LRP works default
settings.
Power Capacitor:
Never disconnect the power-capacitor! It offers increased punch and additional protection.
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!
Sensored Brushless Technology:
Advanced Digital allows the perfect knowledge of the brushless motor’s
magnet position. This results in perfect motor control at high and low RPM‘s, as well as perfect brake control.
Multi-Protection System, 3-way protection:
The perfect protection against short-circuits (motor), over-
load and overheating. If your speed-control faces overload, the motor function will be shut-off for protection and the
SET LED will flash, although the steering function is maintained. Let the speed-control cool down for a few minutes.
If you experience frequent shutdowns, check for the following:
• Setting for AutoCell System (by mistake in LiPo mode when using NiMH batteries?)
• Correct gear ratio (refer to motor manual for gearing recommendations)
• Power Profile setting too high (higher value will heat up motor and speed-control excessively)
• Motor is too strong or motor is damaged.
MODE LED #1 #2 #3 #4
Yellow/Red
(alternate)
Smooth Linear Progressive Aggressive
All products from LRP electronic GmbH (hereinafter called “LRP”) are manufactured according to the highest qua-
lity standards. LRP guarantees this product to be free from defects in materials or workmanship 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 misuse, improper maintenance, outside interference or mechanical damage.
„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 in your model and the
trouble shooting guide, if available, before you send in this product for repair. If products are sent in for repair, which
do operate perfectly, we have to charge a service fee according to our pricelist.
With sending in this product, the customer has to advise LRP if the product should be repaired in either case. If
there is neither a warranty nor guarantee claim, the inspection of the product and the repairs, if necessary, in either
case will be charged with a fee at the customers expense according to our price list. A proof of purchase 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.
If LRP no longer manufactures a returned defective product and we are unable to service it, we shall provide you
with a product that has at least the same value from one of the successor series.
The specifications like weight, size and others should be seen as guide values. Due to ongoing technical impro-
vements, 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.
To eliminate all other possibilities or improper handling, first check all other components in your model and the
trouble shooting guide before you send in this product for repair. If products are sent in for repair, which do operate
perfectly, we have to charge a service fee according to our pricelist.
The crossed-out wheeled bin means that within the European Union the product must be taken
to seperate collection at the product end-of-life. Do not dispose of these products as unsorted
municipal waste.
MODE LED Remark #1 #2 #3
Red
Electronic Brake yes yes none
Reverse Function none yes none
#1 #2 #3 #4 #5 #6 #7 #8 #9 #10
> -45°C
> -81°F
-40°C
-72°F
-35°C
-63°F
-30°C
-54°F
-25°C
-45°F
-20°C
-36°F
-15°C
-27°F
-10°C
-18°F
-5°C
-9°F
Shut-
down
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 connectors
Sensor Wire missing/defective Install/replace sensor wire
Motor defective Replace motor
Speed-control defective Send in product for repair
No servo and no motor function. Speedo connected to receiver with wrong
polarity
Connect speedo with correct polarity
Wiring problem Check wires and connectors
Battery defective Replace with different battery pack
Crystal defective Replace components one by one.
Receiver defective
Transmitter defective
Speed-control defective
Send in product for repair
Motor stutters while acce-
lerating
Sensor Wire defective Replace Sensor Wire
Wrong motor timing Test with different mechanical motor timing
Motor or Sensor Board in motor defective Replace sensor board or motor
Radio interference Change location of components
Power Capacitor damaged Replace Power Capacitor
Speed-control defective Send in product for repair
Motor runs in reverse when
accelerating forward on the
transmitter.
Model with reversed gearbox! Can not use a sensored brushless system!
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
Power Capacitor damaged Replace Power Capacitor
Motor or sensor-board in motor defective Replace sensor-board or motor
Speed-control defective. Send in product for repair
Speed-control switches off
frequently.
Running in LiPo mode when using NiMH
battery!
Change value of Autocell System to #2
Fan not connected or damaged Check/attach fan
Model used too often without cool-down
periods
Let speed-control cool down after every run
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 (e.g. gear ratio too long) Use smaller motor pinion/shorter gear ratio
Stuck drivetrain or ball-bearing Maintain model
Motor defective Replace motor
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
Motor or Sensor Board in motor defective Replace sensor board or motor
Radio interference 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
S. 54 S. 54
1/8 HIGH-PERFORMANCE ELECTRIC 1/8 HIGH-PERFORMANCE ELECTRIC
4WD R/C COMPETITION BUGGY 4WD R/C COMPETITION BUGGY