O.S. 46 FX on a pipe
I recently got a Mach racer wit a O.S. 46FX with a tuned pipe. Fixed up the plane a little and did away with the gear. Looks like it shoul;d be pretty quick but I am not sure what prop to start with. I also don't know the first thing about tuning a pipe. I hope it is pretty much set byu the person I got it from so I have left it like it was set.It came with a 10-6 APC prop. The only thing I have changed is the prop. I went to a 10-6 Master Airscrew narrow blade. What size prop would you guys go with? And a short how to on tuned pipes would be great.