I'm thinking of building an ARF Aero-Works Edge 540T 60". Any suggestions on Servo's?

What about for a 60 - 90 Yak 54 from Aero-Works? Any suggestions on Servo's?

I have a bunch of DS821's - will those work for both airplanes?

http://www.rcuniverse.com/forum/m_97...tm.htm#9775406

If you want to knife edge you will need more torque on the rudder servo. Other surfaces should manage OK

There is a formula and table that helps you get in the ball park!!

Here you have an on-line calculator:

http://www.geistware.com/rcmodeling/calculators.htm

THAT is a cool program!!! It would be better if it were in inches, but I use boyh Metric and English so not a problem. THANKS!!!