Actually im not using velcro anymore, simply because i couldn't find a way of attachment that i was happy with. I found some small door latches i am going to be using. But velcro would work just fine. There is a lot of friction in the connection between parts. Its aluminum spars sliding inside of an aluminum tube. Its kind of a pain to get apart actually. I dont think the forces are very strong at all that are trying to pull the wings apart. Most of the wind is hitting them straight on and if anything is increasing the pressure against the parts.
For the inner ailerons i am going to first have them all work together like large ailerons. No mix or anything. We have a 950' runway at our club so i have the room to do a long and fast landing/takeoff. If i want to make them flaps i just need to flip one of the servo horns 180 and they will both move in the same direction. I have run the numbers (2000 square inches and 30lbs) and think that it will be fine. Guessing stall is around 30-35mph. Assuming maiden goes well i will add in some mixes for standard flaps or maybe even put all 4 servos in their own channels to add some flaperons.
