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Mode Programming
The Flow features 7 modes which enable you to finetune it in detail to YOUR special requirements. The factory
settings are shown in grey colour.
• How to get into „Mode Programming"
• How to check the stored values
• How to change the value
• How to get to the next Mode
• How to leave the programming mode
Important: do not turn the switch off before leaving Mode 7 (by one more press of the MODE button) as otherwise
your recent changes won't be stored in the memory of the Flow!
Take your time to understand the different mode's and it's parameters, profiles and functions. Otherwise you will
not fully benefit from the latest achievements built into this speed-control.
Special Features (further explanations)
Boost0 Racing:
the blue LED will flash in neutral trigger position, to indicate that entire timing advancement is
disabled for „true stock racing", as required by certain federations.
Boost0 is enabled when Mode3+4 are set to #0 value (then Mode5+6 will not be visible).
Linear BEC:
a powerful linear 6V/3A output has been integrated, which offers bulletproof + stable voltage to
the receiver + servo.
Keep in mind that even the strongest BEC may suffer from a faulty servo or cooling fans, so if you run into trouble
with unstable voltage supply or unexpected receiver problems make sure that you also check the servo and fan(s)
as it is known that certain digital servos draw excessive currents and cooling fans can get damaged.
1S LiPo Usage:
the Flow can operate with lower input voltage then 7.4V but be aware that you need to run
a receiver battery or „RX-booster" when you're using a 1S LiPo or 4cell NiMH battery pack as it doesn't have a
built-in booster.
Connect a suitable receiver pack directly to the receiver and leave the switch in off position. Make sure the receiver
packs voltage is within your receivers & servo's limitations.
On/Off Switch:
unique design, please read! The switch operates as „active low", this means if you cut-off the
switch the speed-control will always be turned on and not off! The reason is, that in case the switch gets damaged
in a crash and fails, you'll still be able to complete your run with no switch!
In case you'd prefer running without the On/Off switch and want the speed-control to be turned on instantly once
you connect it to a battery, you must remove the switch and not connect the two wires which go to the switch!
On the other hand if you use 1S batteries and a receiver battery pack or BEC-booster you should bridge the switch
wires to leave the speed-control in Off position.
Adaptive Brake Response:
newly revised X-Brake Pro with sharper response and super-linear feeling!
A good starting point for the brake setting on your radio is 80% for all classes. Make sure you do the radio-setup
with all settings on the radio on 100%!
Changing Mode Settings without the Transmitter:
lead from the receiver and change the MODE settings on the speed-control as described under „Mode Program-
ming". With 2.4GHz radios you don't even need to unplug the receiver lead!
Works-Default-Settings:
All LRP speed-controls come factory-adjusted (defaults are grey-shaded). If you
loose track of the modes, you can restore the works default settings easily. With your radio switched on, hold the
SET button pressed while you switch on the speed-control. This returns the unit to our works default settings.
Lower Motor Temperatures:
our further sophisticated software with improved commutation algorithm and
the improved hardware result in further reduced motor operating temperatures.
Fading Compensation:
a special algorithm compensates the feeling that the car may act slightly different with
fully charged batteries vs. semi-full batteries. This algorithm takes that into account and compensates for that
offset, so the feeling should remain closely the same for the entire run.
Power Capacitor:
Never run without a power-capacitor! It is needed for protection and increases punch, it
must be connected to BAT+ and BAT- solderpads with shortest possible wires.
Troubleshooting Guide
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.
Always check error by checking LED error code first, this gives you a good indication were to search!
SymPTom
CaUSE
Motor overheats
False settings in timing modes
Too high mechanical motor timing
Too little motor cooling
Insufficient performance.
Wrong Gear ratio
E.g. poor power, topspeed
False settings in timing modes
or brake
Transmitter settings changed after set-up
Power Capacitor damaged
Motor or sensor-board in motor defective
Speed-control defective
Servo is working, no motor
Speedo plugged in incorrectly
function
Multiprotection System activated
Wiring problem
Sensor wire missing/defective
Motor defective
Speedo defective
No servo and no motor
Speedo connected to receiver with wrong polarity
function
Wiring problem
Battery defective
Crystal, receiver or transmitter defective
Speedo defective
Motor stutters while
Sensor wire defective
accelerating
Motor or sensor board in motor defective
Radio interference
Power capacitor damaged
Speedo defective
Motor runs in reverse when
Model with reversed gearbox!
accelerating forward on radio
Speed-control switches off
Wrong cut-off voltage setting (Mode.7)!
frequently
Model used too often without cool-down periods
Motor stronger than motorlimit or input voltage
too high
Stuck drivetrain or ball-bearing
Motor defective
Motor never stops, runs at
Transmitter settings changed after set-up
constant slow speed
Humidity/water in speedo
Motor or sensor board in motor defective
Radio interference
Receiver or antenna too close to power wires,
motor, battery or speedo. Receiver aerial too short
or coiled up
Receiver defective, too sensitive;
Transmitter defective, transmitter output power
too low, servo problem
Poor battery connection
Transmitter batteries empty
Press MODE button for 3 or more seconds.
Count the number of flashes of the green SET-LED
(* = value 1 | ** = value 2 | etc.).
Press SET button to increase value by one step.
Press MODE button once.
If you are in MODE.7, press the MODE button one more time,
which will also store the settings!
with FM radio's you simply disconnect the receiver
REmEdy
Adjust settings of timing modes
Decrease mechanical motor timing
Add cooling fan and/or heatsink
Adjust gear ratio
Adjust settings of timing modes
Repeat set-up procedure
Replace Power Capacitor
Replace sensor-board or motor
Send in product for repair
Plug speedo to receiver as Ch.2
Check settings for your application
Check wires and connectors
Install/replace sensor wire
Replace motor
Send in product for repair
Connect speedo with correct polarity
Check wires and connectors
Replace with different battery pack
Replace components one by one
Send in product for repair
Replace sensor wire
Replace sensor board or motor
Change location of components
Replace power capacitor
Send in product for repair
Can not use a sensored brushless system!
Change cut-off voltage setting accordingly
Let cool down after every run
Use only motors and batteries which are within
the specifications of the speed-control
Maintain model
Replace motor
Repeat set-up procedure
Immediately unplug and dry speedo
Replace sensor board or motor
See „Installation Tips" and „Installation"
Replace components one by one
Only use original manufacturers crystals
Check plugs and connecting wires
Replace / recharge transmitter batteries
*** Mode.1 Automatic Brake
Remark
Units
#0
#1
#2
Autobrake strength
[%]
0
3
6
allows you to set a slight braking action when your trigger is in neutral range.
*** Mode.2 Feel / Initial Drive
Remark
Units
#1
#2
Initial Drive
[%]
3
5
also called minimum drive, this is the level in % where the speed-controls initial throttle power will start in relation
to your radios trigger position. A higher value means more aggressive initial response.
*** Mode.3 Torque Timing
Remark
Units
#0
#1
#2
Torque Timing
[°]
5
10
disabled
this function should only be enabled (= use of 5-25° of torque timing) for X12/X20 motors, all other motors should
be used with #0 in this mode.
In combination with X12/X20 motors the „Torque Timing" will increase the motors torque and efficiency, play with
the values to find the best setting for your usage as it also affects drive feeling slightly.
Important: enabled „Torque Timing" is not complying with Boost0 rules and blue LED will not flash in neutral!
*** Mode.4 Boost Timing
Remark
Units
#0
#1
#2
Boost Timing
[°]
disabled
5
10
adjusts the speed-controls dynamic boost timing in degrees (5° increase for each step), which is applied linearly to
the motor based on it's RPM. A higher number results in more overall power & RPM, but also higher temperature.
Important: enabled „Boost Timing" is not complying with Boost0 rules and blue LED will not flash in neutral!
*** Mode.5 Boost Angle & Activation
Important: this mode is only visible if you select values 1-10 in Mode.4, if you selected 0 it will hop straight to Mode.7.
Remark
Units
#1
#2
Boost Angle
[°/k]
0.2
0.4
Boost Trigger
[RPM]
use for
Boost Angle: this number is given in degrees per 1000RPM, so for each RPM increase of your motor the Flow will
increase it's dynamic boost timing linearly until the set „Boost Timing" level has been reached. Higher number
means more aggressive timing engagement as more timing is applied at lower RPM already, a higher number will
also increase the motor temperatures.
Boost Trigger: RPM at which the Boost Timing becomes active, below this RPM there is 0° boost timing.
*** Mode.6 Turbo Timing
Important: this mode is only visible if you select values 1-10 in Mode.4, if you selected 0 it will hop straight to Mode.7.
Remark
Units
#0
#1
#2
Turbo Timing
[°]
disabled
5
7
applies an adjustable extra turbo timing, on top of the „Boost Timing", when the set „Boost Timing" level has been
reached (e.g. ramp section has ended) + you apply 100% throttle on your radio.
Be aware that turbo timing will not engage if your motors RPM, your gearing, and the selected „boost timing" and
„boost angle" do not match well. So if your motor is too low RPM, the selected „boost angle to shallow, the „boost
timing" high the timing will never reach it's „destination" and the turbo timing will never activate!
*** Mode.7 Cut-Off Voltage
Remark
Units
#0
#1
#2
Cut-Off Voltage
[V]
3.2
4.0
use for
disabled
1S LiPo 2S LiFe 2S LiPo
Motor Temp Cut-Off
110°C (230°F)
when the battery voltage reaches the selected cut-off voltage, the motor function will be disabled and the LED's
will indicate that the shutdown has occured due to undervoltage of your batteries.
Important: Default setting is 2S LiPo, so if you use other batteries you need to adjust this mode before first use!
Using value #0 in this mode will also disable the motor temperature cut-off function entirely!
Repair Procedures / Limited Warranty
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 solderpads)
• 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.
#3
#4
#5
#6
#7
#8
9
12
15
20
25
30
#3
#4
#5
7
9
12
#3
#4
#5
15
20
25
#3
#4
#5
#6
#7
#8
15
20
25
30
35
40
#3
#4
#5
#6
#7
#8
0.6
0.8
1.0
2.5
3.0
3.5
7600
5100
modified racing
stock racing
#3
10
#3
6.4
#9
#10
35
40
#9
#10
45
50
#9
#10
4.0
4.5
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