Originally Posted by
Checkboard
The rudder bars operate the rudder PCU via cables, through the Rudder Feel and Centering Unit, which uses a set of inner and outer springs to produce feel in the rudder pedals. The tension on the springs is adjusted by aircraft speed, so the rudder pedals are thus harder to push at speed, with the stiffness increasing with the amount of deflection.
It sounds like there is no actual stop in flight. Or at least in high speed flight as you cannot deflect the rudder pedal as much at this point. But, can a stronger legged person deflect the pedal further than a weaker person. And if so, is there a point where the rudder itself will not deflect any further due to airflow over it and therefore, you are just compressing the spring in the feel and centering unit with no actual increased rudder deflection?
I have never seen a diagram of how the rudder feel and centering unit works. If anyone has a link, it would be appreciated.