This is the foam fuse Sukhoi I am working on. I have about 9 hours labor in it right now. The weight as it sets is 1lb 13oz. I still need to cap the LE and TE of the wing and cut out the foam for the radio gear and I'll add some lightning holes to the wing. It should be slightly lighter when I start to cover it. About half the time I have spent on it is framing up the stick control surfaces. I was originally planning on using Corogated plastic but felt there would be flexing issues with such large and wide surfaces. I was to cheap to buy some CF tubes to strengthen the Coro. I will give up a little durability using balsa but it aint meant to crash.....allthough it is inevidable. It has been a pretty quick build and I have about 12 bucks in the airframe. I am incredibly cheap. I weighed all my gear and engine etc. the all up weight should be about 4 1/2lbs dry. I think this will be a good weight for a ST 45. I'm hoping for a balistic missle.