Hey guys somebody engineers a good thing then everybody steals the design look at the russian space shuttle looks alot like ours because it is ours they had spys steal the design only difference is we can afford to fly ours,they flew theres once and it was auto pilot circled the earth a coulple of times and landed now it's sitting in a museum.you know something is good when everybody whats to steal the design.i'm going to buy a cp belt from k9planes n kopters for 189,i here that alot of parts for most 400 size birds will work with this bird.