RE: Aerobird Swift problems.
tam popo wrote, "The elevators were extended by adding broken elevators with tape to give twice the area."
He is not alone in what seems to be a problem with the Swift. From my experience hand launching the Challenger is a breeze compared to hand launching the Swift. I built-in some additional lift with that portion of the aileron(50%) that is now a permanent part of the main wing. I ran a strip of 2" celephane tape between the former aileron section and the main wing on both underside and topside with opposing force. It is fixed very, very tight/firm in place as if it were welded to the main wing. Yet it has some flex if enough force is applied, but returns to its intended position. This new section is fixed slightly upward for some additional lauching lift. I made sure that each newly attached wing section has the same degree of upward lift on both the left and right side.
Now I won't need to tinker around with the V-tail screws, V-tail shim spacers, or increasing the surface area of the elevator/rudder. Now I can always trim the ailerons and elevator/rudder as should be once the proper lift angle is determined for the newly fixed wing section that was formerly 50% of the aileron.