What is the connection between automatic trim and the auto-pilot?
The auto-pilot and its horizontal stabilisation have nothing to do with automatic trim, i.e. the automatic trim system is completely independent of the stabilisation system. Clearly this is frequently misunderstood. With or without the auto-pilot function, automatic trim defines the correct neutral position for aileron and elevator, and applies this exclusively to the servo positions. It is even possible to make use of the automatic trim feature when the auto-pilot is switched off, and vice versa. If you find that the aileron or elevator axis is not at neutral, i.e. you have to adjust the trims manually even though the auto-pilot is in operation, the reason is usually a mis-match between the transmitter centres and the auto-pilot. This can easily happen if you adjust the transmitter trims manually, but fail to inform the unit (learning process) using the Set button. Trimming is very simple – provided that you observe the instructions! Minor servo jitter, major servo jitter One effect o
