Usage of RPM Governor (optional)

Please note that the RPM Governor function is an optional feature and may not be accessible on all MICROBEAST PLUS devices.

In general the RPM Governor can only be switched on when MICROBEAST PLUS is ready for operation. During the initialization phase the signal from the throttle channel is passed directly to the throttle servo. Therefore (especially with electric models) make sure that during the initialization the throttle channel is set to „motor off“ position at the transmitter (not „Autorotation“!).

Note that if your receiver does not send a valid control signal to MICROBEAST PLUS within two seconds after power up, the throttle channel will be locked for security reasons. In this case [CH5] output will be set to motor failsafe position (set at Receiver menu point N). Only when MICROBEAST PLUS gets a valid signal from the receiver and the throttle stick is moved to the programmed failsafe position (or below) the throttle channel will be unlocked.

With nitro helicopters always ensure that the RPM Governor is disabled when you start the model. Otherwise the RPM Governor would drive the throttle servo up to the full throttle position and stay there as it tries to reach the demanded head speed. So always check the throttle servo position before starting the engine very carefully!

As described above at Governor menu point D set your throttle curves or the auxiliary channel in the various flight modes as high as necessary, so that the desired head speed will be approached and observed. Keep in mind that the head speed should not be higher than 80% of the maximum head speed that is possible with this motor and this gear ratio. If the chosen head speed is too high, the RPM Governor will constantly give full throttle input and no effective govering will be possible because there is not enough room left to open the throttle for compensating the rotor head load.

Some transmitters offer a special setting that allows to automatically switch the auxiliary governor channel together with the flight mode switch. So the motor can be started in the first flight mode, you can spool up the rotor by applying throttle manually and hover the helicopter. With the second flight mode the throttle curve is switched to a „V“-shaped curve and simultaneously the RPM Governor is turned by the auxiliary channel. In this case pay special attention that the two throttle curves overlap as good as possible in the point at which the transfer between the two flight modes takes place. Otherwise the throttle servo would make a jump before the RPM Governor will take over control as you still may be in manual mode for a short amount of time. So in this type of operation it is not possible to activate the RPM governor from the get go and let the rotor spool up autonomously. If you want this, you must activate the RPM Governor before switching to your second flight mode!