Kjell,

On the subject of feedback potentiometers, you may be interested in this earlier thread - http://www.rcuniverse.com/forum/m_36...tm.htm#3665984

I had also thought of using a small damper attached between the adjacent arm of the servo and a fixed hardpoint nearby. If the spring was removed from the damper, it would act as a "first order system" and provide lag without any overshoot. By experimenting with the viscosity of the damper oil and the size of the holes in the damper piston, it should be possible to provide sufficient damping to reduce the wear on the feedback pot without causing any significant increase in the servo response time. There may be a small penalty in terms of weight, but that ought to be acceptable.

If you do get round to trying a damper, let me know how you get on. In the meantime I'll probably keep changing my aileron and elevator feedback pots ever 100 flights or so.

Bob

PS to Electric Flight enthusiasts:
I know that wear on feedback pots is less of a problem with electrics. However just think of all the fun you would be missing with a YS. No substitute for oily hands and the throb of a highly tuned 4-stroke!