RE: Folding wing
The Frog is sold through Foam Fly and can be found on their website foamfly.com.It can be bought in a kit form or plans and is made from folding fan foam that is available at lowes or similar stores. The one I crashed was powered by a IPS A motor from GWS and it flew very nicely if a bit underpowered. I'm putting two together right now for me and a friend and am thinking of putting a more powerful engine in it. I'm not sure why the wing folded on me as it was still in really good shape. I had been doing a lot of loops with it and with that power system it took a long dive to get enough speed to do it. The last three times I flew it I did about ten loops total and each one took a strong dive before hand so maybe I just over stressed it.Either way it was a sad sight when that wing folded. The receiver was pretty junky already but at least I still can use the servos. Hope you get one as it's perfect for flying around the yard. Later!!