I actually did that on a 40 size but had all kind of problems. I couldnt find anyway too push the wings in the up position without adding way too much weight. The second problem was to lock the wings in the down position and then to raise them with out going over and releasing them manually. I didnt have much problem designing the wing to fold but the flaps had to have 4 servos because the split in the middle of them and the othere problem was the alieron servo that was mouted in the middle of the wing couldnt be used I had to go to 2 servos now im sporting way too much weight in the wings. I decided that the tubes, pushrods, servos and extra weight was just not practical. (there goes 2 months of my life
) Good luck tho and please let us know how that works out for ya!