Hello,

I am working with a converted weedeater engine but my question only pertains to the prop. I am spinning a 15x8 up tp 12000 RPMs on the ground, much to high. I would like to switch to a 3 blade to save some ground clearance. I know you drop an inch when you switch to 3 blade to stay the same RPM, but what about lowering the RPMs is there any kind of guideline there? I think I should drop the RPM down atleast to 9500 on the ground if not lower. What prop would you suggest trying? I dont want to buy an entire handful of props at $15 a prop.

Thanks, Erik