Originally Posted by
noooby
The lever has three attachment points. The far end is where the control rod from the pedals connects. In the middle is the linkage that operates the pilot valve that then moves the servo. The end that is being inspected is connected to the servo itself. When this moves it resets the pilot valve to stop servo movement.
Standard method of controlling servos.
Thanks, that is roughly what I guessed from the diagram, works by balancing the control input and servo output to a "zero'' at the pilot valve, in electronics same as an op-amp.
So Is this roughly correct?
If the control path disconnects the system could be rigged to settle on the 'aerodynamic neutral' mentioned above.
If the feedback path fails then the servo will likely continue to be driven to a stop since there is no (or at least incorrect) input at the pilot valve.