Seems the motor plateaus at about 6,000 rpm. I'm using an 18x6 prop for just testing on the bench. Maybe a smaller prop would bring the rpms up some.

I just want a nice easy flying "Sunday" airplane I only do sport flying anyways. I thought it would be rewarding to take a thrown out weekwacker and use the
motor on an airplane.

I'm asking about the ignition system because I was wondering if the timing on these motors limits the rpm's.