I've got a H9 T34. Great flyer! I've got an RCV .60SP in it, and it hauls it around nicely.

The only snag with this engine, is that it requires a large diameter prop, and I've got about 1/2" ground clearance with the 13.4x13.5, 3 blade prop, and it mows a lot of grass on takeoff.

If I had it to do over, I would have used the old Enya .60X 2 stroke I have lying around. I could use a shorter 11" prop.

Although it is nice to fit the entire thing into the cowl with the RCV.

A Saito .82 will hover this thing, IMHO.