There really is no way to make the flaps work off one servo, this is a 2 piece wing. You will want flaps on this plane as it just doesn't slow down. Plus it look very scale on final with flaps down and putting on a 4 stroke. I have 2 of these planes one with a saito 56 and the other with a saito 62 and they pull this plane very well, that 80 is going to make it fly like a rocket :-)