I have a 31% Aeroworks Edge with a 3W 75cc engine currently running a 24x10 two blade Menz 'S' wooden prop.
The plane flies very well on this prop but is too noisey for the U.K. regulations, although I have a 3W tuned canister exhaust.
I have tried a 26x10 prop but this kills the engine above 1/2 throttle.
Does anyone know what size 3 blade prop to use, I have been told to go 1 inch smaller in diameter and same pitch but other people have told me different. Also will a 3 blade prop make it quieter?.

Cheers.....Stuart