I just went and checked and I am running a 12x6 on my saito .65 and 11x7.5 on the saito .56.

12x6 does seem a little on the small size for the .65 if I can run a 11x7.5 on my .56's. I run a 12x4 on the saito .50's.

13x7 might be a very good prop for the .65.

I may bump the prop size up on the saito .65, and do a thrust check on it before I fly it. I just hook up a cheap fish scale on the tail of the plane and tie the other end to something and get a pound reading of the scale. It just give me a idea if one prop is pulling better than another at full 10K RPMs

sorry about the mix up on prop sizes

just thought about looking at the book on it.

The book for the saito .65 says "sport 12x6 12x8 13x8"
"scale 13x8 14x5 14x6"
"aerobatics 11x9 12x8 13x6"


sitcks