RE: GP minnow/OS91 surpass..what prop
by the way i went from a tad over 10k with a 14X6 to about 10,400rpm with the 13X8. I figure the engine is plenty safe at 10,500 on the ground. It still is a lil rich as it isnt that old. Think 10,500 is a good ground rpm for say a 13X10 prop? The engine should safely pull over 11 in the air.