Wiggy, my Rossi .45 won't run any faster than my OS .32 either.

The faster you go, the greater effect some stuff like sharp trailing edges, big radius fillets, cowls, etc. has. It might not be measurable at 100 mph compared with blunt, ugly] trailing edges. We've got a local guy who is an aerodynamicist for Boeing, his C/L combat planes have all the drag eliminating tricks. They go about 120-125 with a Nelson .36. Now there are all these ARF combat planes with blunt TEs, fat airfoils, exposed leadouts...., but they are just as fast and manueverable as Howard's planes. Howard flys ARFs now.