I am flying a World Models P-51 Mustang, with an OS 46FX. Using an APC 10-6 prop, I can turn 13,500 RPM, on the ground. Changing to a 10-7 APC, I can turn 12,500 on the ground. I cannot see any great difference between them, but I suspect that the more horsepower (and speed) will be in the upper RPMs, although I really have no idea what the power curve looks like. What direction should I take with props in order to achieve higer speed. Please offer other comments as well if it helps to achieve greater speed. Also, the canopy is not tightly sealed onto the fuse. Will the gaps cause any problems in high speed flight?
thanks for your insight and assistance.