The .40 Great planes Cap is my next project after I finish my Carden Cap.(March 01) I am of the opinion that a light engine should be used. I plan on an OS 50sx. This will keep the weight down so the plane will do other things other than hover/tork.
I had a 50sx on a 5 1/2 lb big stick arf and it would pull it out of a tork roll with authority. How much is needed?

Mike, and others that built this airplane, do you think less than 5 lb is achievable? What about moving the hinge line on the ailerons?

Thanks,

Jess