The engine mount is home made from 1/4" G-10 material, but it is really the same type as sold by AI.

I did adjust F!, but did not want to chance screwing up and going too far, so I used a compromise, and it worked out fine.

I don't have any rpm numbers for you, but yes it will turn a 26 X 10 and the power is fantastic.

I plan on (someday) using a 3 blade 22 X 12, I haven't tried it yet but a guy I know flies them on his 75 and likes it.