Adjustment at the device
98.3 Reset adjustment
You can delete all trimming by pushing and holding the button on the device for at least
10 seconds, then release. This will reset all trims back to factory state but will NOT affect
the single servo trimmings of SETUP MENU! So you can change the trimming on the
flying field if necessary and if it was wrong or too much, you can easily clear it out without
affecting the other settings.
98.4 Trimming the artificial horizon (optional)
If the helicopter is not aligned horizontally as desired with active AttitudeControl, i.e
drifts to one side in hovering, the artificial horizon can be readjusted. To do so activate
AttitudeControl at PARAMETER MENU point A with the transmitter‘s AttitudeControl
channel and make sure the tail gyro is in Heading Lock mode. By moving the aileron or
elevator stick the roll and pitch tilt of the horizon can be increased/decreased. Briefly
touching the appropriate stick will trim the horizon stepwise by 0.5 degrees to the specific
direction. Touching the stick repeatedly or holding it for longer time will trim the horizon
by several steps. The color of the Status-LED gives you an approximate indication of how
much you did trim and when the trim has changed the Status LED will flash for a moment.
When you place the helicopter in horizontal position and you should be able to see the
effect of trimming. When the swashplate is perpendicular to the main shaft this will by
the approximate position of the helicopter in flight. Note that the helicopter usually is
slightly tilted to the side in hovering flight due to the drag of the tail rotor. Therefore as a
starting point by default the system has a trim of 4 degrees to the right to make the heli
tilt against the rotor torque (using a helicopter with clockwise turning rotor). Also note
that AttitudeControl can not recognize the absolute position of the helicopter. Depending
on wind and environmental conditions it may happen that the helicopter stays level but
drifts into a certain direction during hovering flight. You may use the trim to compensate
this an hang the helicopter more into the wind, but when turning the heli by 180 degrees
it will drift even more! So ideally you trim the horizon on a calm day when there is no wind.
As a last note please be aware that this is not a professional autopilot system. The system
can be influenced badly by long-lasting vibrations or fluctuations in temperature. As a
result it can't be guaranteed that the helicopter does always comply exactly the same
attitude. The performance highly depends on many environmental conditions. So keep
the system as far away as possible from rotating parts on the heli. Make sure the heli
is running smooth and free of vibrations and make sure the MICROBEAST PLUS unit
is perfectly aligned to the rotation axis of the helicopter (otherwise the axis will be cross
connected together and the calculation of the artificial horizon will not match the real
movement of the heli).
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