I like your design so much so that I am starting to get a few bits and pieces together to start building a frame on those lines. Can you tell me what size is the angle iron? If you were going to build another frame, would you go any lighter in the steel you used? Does the frame flex at all or is it nice and stiff? Is there any chance of you taking some close-up photos of the bottom bracket and swing arm area to see how you built it?