I really wanted to put a gas engine in mine but after reading all the above it sounds like the Saito 120 will be the engine of choice. I have 2 new Quadras sitting on the shelf and I wish I could have used the smaller one (it's a 35) in the GP Gee Bee - or at least a smaller gasser, something like a Zenoah 23, but even that sounds like it's too heavy.

On another note, has anyone considered using mixing to use the ailerons as flaperons to improve low speed performance on landing? Since the tips extend well past the ailerons I wouldn't think tip stalling would be an issue. Thoughts?