What is this resistor strip on my helicopter circuit?
That will be a linear resistive track for servo feedback.
Measure track resistance end to end. Then ...

You may be able to drive a standard linear mechanical pot instead using the mechanism. 

Looks doable. Gear on end of existing linear resistor needs to be fitted to multiturn end of a linear pot.



You can get linear posts with screw thread drive. Or you could add a simple thread and nut drive to something like this linear pot from Mouser