Grussti Philipp,

the only thing I can come up with is in effect a joy stick mechanism, wereby the joy stick is the rotor shaft. The potentiometers would be replaced by servos. But this leads to a problem, either you use very strong, heavy, servos or a gear-box to up the torque. If gear-boxes are used then this will slow down the reaction time. I may well be wrong, but as far as I can see if you use any other form of control then you will run into non-linear movement.

Why don't you use a heli swashplate? Simpler, also lighter servos and less weight.

I'll be watching this theme as I also have an interest in this matter.

If you need drawings, large scale, of the original aircraft just PM me or send an email.

Servus.

Karl.