No rudder control

Hi fellow pilots,

I have a strange issue with my rudder servo. When I move the yaw stick the rudder servo is not moving. The swash servos do move when I move the yaw stick.

All other controls are correct. When I move throttle and cyclic controls the correct servos move. Also the swash is corrected in the expected direction when I tilt the helicopter. When I turn the helicopter the APM should correct this by giving yaw control but it is not doing that.

In MP all controls are correct at the radio calibration screen I.E. when I move the yaw stick the rudder input bar is moving in the correct way. However, the rudder servo is not moving.

There is no mixing done by the radio.

What could the issue be?

Regards.

Can you post your parameters?

This thread is also on DIYD. Maybe it is more sensible to just link to that thread: diydrones.com/forum/topics/rudde … n-servo-is