All these Tube and Gusset discussions got my gears turning. I want to see how the more successful tube and gusset airplanes are built, and as a rough starting point for a potential future project. YES I will have an actual engineer do the math if I decide to do something new, but I want to start with the knowledge of what's out there now and working. I have some interesting jun... I mean... treasures to trade. Or, I can fork over an amoeba-sized chunk of cash, but I'm bargain hunting here, not retail shopping. What do you have, and what do you need?