GM-Racing GENIUS 90 Bedienungsanleitung Seite 37

#10 RPMLIMIT (RPM limitation) (only with conventional motors)
The max. RPMs can be limited. This feature has been introduced especially for the Standard classes in
order to achieve standardized RPMs at a stipulated gear reduction, and thus achieve the same terminal
velocities, or to set a limit to the RPMs of airplane propellers. RPMLIMIT is also ideal for beginners who
want to set a top speed limit for their models.
By use of the GMVIS-Commander the speed limit can be adjusted between 12.500 and 210.000 RPM in
200 steps on 2-pole motors see the formula and the graphic curve.
When you encounter motor problems on the run-up it is recommended to set the RPM limit to
125.000 RPM (8) (on a 2-pole motor) or 100.000 RPM (13) or less since in this case the controller
can provide a better run-up attitude by using a different software!
On motors with more than 2 poles the corresponding RPMs are as follows:
True RPM = indicated RPM * 2 / number of poles
Formula for the max RPMs when programmed over a GMVIS-Commander:
Max. RPM approx. = 5.000.000 / {(programmed value + 12) * number of poles of the motor)}
Programmed value (approx.) = {5.000.000 / (max. RPM * number of poles)} 12
ROAR-Sportsman = 92 = 24 000rpm
#11 AMP LIMIT (Current drain limitation)
The AMP LIMIT can be set from 50-150 A by using the push-button, or from 0-200 A with the GMVIS-
Commander. The current limitation can have an influence on the torque of the motor. AMP LIMIT should
be set so as to avoid that for instance the wheels of a car do not or only slightly grind on the ground.
recommended values: 40-200 A according to the grip of the tyres
#12 START LIMIT (Start-up current drain limitation)
START LIMIT is activated when the throttle stick is being held in position "neutral" for at least 3 sec.
It is deactivated once the position "full throttle" has been reached for the first time.
The start-up current should be chosen so as to avoid that the wheels do not or only slightly grind on the
ground, and maximum traction is guaranteed at the start.
recommended values: 40-200 A according to the grip of the tyres
#13 TURBO (0-9A)
At full throttle the turbo function increases the potential current drain by the selected value (in amps)
within 4 msec, beginning with the current which has been set in AMP LIMIT. (see graphic curve)
recommended values: 0-5 A
Example: You've set the current drain limit to 50 A, which means that you currently have at least 50A at
your disposition. At the moment you set the throttle to "full throttle" the turbo sets in, i.e. every 4ms the
current drain is increased by the selected value until the max current is reached.
This procedure increases traction especially on slippery routes, is power-saving, and increases your top
speed on straight tracks. The turbo function will engage whenever you set the throttle to "neutral" and
then to "full throttle".
#14 POWERCURVE (0-2)
This function allows you to select three different throttle curves so as to optimally adjust the controller's
behaviour to the route and your driving attitudes.
0 = linear
1 = soft (similar to exponential '-' on the transmitter)
2 = hard, for the standard classes (similar to exponential '+' on the transmitter)
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