jrf

My Feedback: (551)

Thanks for the clarification. A 10x8 is too much prop for a 46, but the 10x7 "should" turn about the same rpm as the 11x5, and the higher pitch at the same rpm "should" make the airplane 20 mph faster. Running the numbers, a 5 pitch prop on that engine pencils out at about 60 mph in level flight. But a 7 pitch should run about 85 mph. Of course that depends on the individual airplane configuration. And if you using Master Airscrew props, all bets are off.

Jim