ORIGINAL: bahamadude
Hello i have a kanagaroo II with each wing having 2 control surfaces, totaling 4 servos for the wings.
I understand this is a redundancy setup.
I would like to know how do they work? Are they both elevons or the outer ones are ailerns and the inner are elevators ?
Because of the redundancy what servos should i use ?
I also have a Roo II, and per the advise of a few of the Roo pro's on here (thanks Todd), I bonded each set of elevons together. I've installed the new JR 8611's in the outer servo bay. The new 8611 produces 260 oz/in of torque, and can definitely handle any stress you can throw at them.
The reason there were 4 servos designed into the wing was due to the load placed on the elevons during flight maneuvers; older technology servos could not handle the high stress. If you go with four servos, you'll need a matchbox or other devise, with just two there's no need.
My 2 cents.......
Good luck with yours!