Was just gonna post about this subject. Wow, lot of info there to soak up. Im working on a PT-40 trainer, which have only one servo for the ailerons. Just gotten hold of an non-computer 4c radio (Hitec Laser 4). It does have ATV on channel 1 and 2 (ail./rud.), and im guessing i should set up differential on my ailerons too. Would love to have some automated rudder-input (similar to auto-rudder in MS Flight Sim i guess ) too, but i guess thats not good learning.

Anyways, i get how you can set like 1/2 up and just 1/4 down on a computerradio and when the ailerons are operated by two seperate servos, but how do you (if you can) do this on a single-servo aileron wing?