How or where can I find out how much torque is needed for each surface (ailerons,elevators, rudder) for various size airplanes (25%,30%,33%)?
Hello Y2K
Look at that thread:
http://www.rcuniverse.com/forum/m_53.../tm.htm#538442
Attachment.zip
There is an attachment where you can download an Excell software. That software will calculate the torque required depending of your surface. I am using it for my Extra300.
Scou.