I have built and flown a couple of these great bipes. Both have had a .61 Magnum 2 cycle and fly great. I have seen many with .92 4 cycles on them and even one with a 1.20!

Here is my latest one, round cowl, re-shaped tail feathers, and a rounded fuse.

You only have too much engine when the landing gear is too short to let the prop clear the ground! :stupid: