RE: Sig ultimate biplane
I had the FF Ultimate you are refering to several (10) yrs. ago and it was a lot of fun. I have always wanted another just for something different. It is not a "real" 3D plane but it will provide lots of fun as a sport flyer. The fuse is the weak link in the build-trust me!! Building the fuse from sticks and then sheeting it would be the optimal way now along with a carbon tube down the fuse center line.