I was just wondering 2000-17000 is what OS list as the pratical rpm I know these engine have been pipe to run more then that
9500 just seems way to slow for top end I can't see the engine being very happy lugging that low much less have good throttle response
I've always found that 2 strokes like to spin granted if they're way under propped there just beating the air
I've settled on the apc 10x6 for my 46 size planes I don't know if that prop gives the best numbers on paper but it gives me the shortest takeoff rolls and pulls the best for my style of flying