I just got off the phone with Paul Weston, the Sea-Era designer.
Turns out Paul knew Kasper from the late 1970's to two years before Kasper died. Paul actually first learned to fly RC models with a Kasper model that Paul built from Kasper's design. Kasper, I think, ask Paul to build a scale model for Kasper. Paul learned about vortex from Kasper and use to visit Kasper every month to talk about aero. Paul's designs uses vortex lift in part because of Kasper's influence. Paul knew about the black AL airplane that crashed and the white composite...
Paul tried to get Kasper to use scale models and said that it would have helped with the two airplanes that crashed. Paul built some other model for Kasper and it did not fly well. Paul said that Kasper had a lot of good ideas, but some of them were not totally figured out. Kasper claimed, for example, that a round wing would be lighter than a flat wing...??? Paul thought he was an interesting guy and enjoyed working with him. Paul was not so sure about using the Kasper wing for my roadable.
So, I got an inside scoop on the Kasper wing and the aerodynamics from Paul. Interesting conversation...2hrs. Small world...
Happy new year.