Originally Posted by
wiedehopf
As far as i understand moving the trim wheel moves a drum with steel cable on it. That steel cable runs all the way back to the tail and turns the jackscrew.
So when the electric trim is used the trim wheel is backdriven via the steel cable.
The electric trim motor is located at the jackscrew.
Correct, except that there is also a gearbox in the loop, which takes the mechanical inputs from the cable drum and the electric actuator and produces rotation of the jackscrew:
