RE: Great Planes Seawind
Bob, correct me if I am wrong, but I get a pitch speed of 95 Mph (not Kph) from the 8 cell 8 pitch setup you describe. It seems to me that a 6 cell, with a pitch speed of 71 Mph might work OK in the Seawind. I flew mine on a glow .61 with a pitch speed of 66 to 72 Mph and it flew very well.
Jim