I don't think replaceable panels would give the required strength. I have found that the panels don't have studs, but get their strength from single sheets of aluminum permanently glued to Styrofoam.
I think the overall strength could be improved if the ends of each shell were made of a single piece of tubular aluminum. You may have to use 3 pieces (2 verticals for sides, 1 horizontal for the roof) welded together. The open sides of my upper shells are quite floppy. One shell is actually bowing out quite a bit. I'll post pictures later in a separate thread.
|
Threaded Mode
