RE: Katana V2 70 - 2 Piece Wing
The entire fuselage of the Katana V2 70 has main full beams running down it's entirety, top, middle and bottom. Also bear to mind that the entire fuse is fully sheeted which will add extra strength when tying the back of the fuse to the middle of the fuse to the front of the fuse. When you take sheeting and run it on the fuse with the grain against the point of stress, you have increased a major amount of strength. Especially when you add beams and cross bracing underneath it to tie it all in.
I'll see of the factory can get me a photo of the fuse without balsa.
Either way it will be very strong and will be fully capable of high speed blenders or anything you want to throw at it. We'll be shooting videos next week and putting it through a Forrest Pilkenton stress test.