I don't mean to butt in on your thread, but I have a Evolution .61 that is running the factory 3-blade prop. I would like to change to a 2-bladed prop.
I thought about 11 x 7 or 11 x 8. The engine is on my Alpha 60 trainer. I not particularly looking for speed. I am learning so I would like power in
case I get in a tight spot. Would the 11 x 8 be better for power?

Thanks