Originally Posted by richp
What's the strategy here?
Laziness... The 16" gap between the 2 frames is technically the "hinge".The perpendicular tube is called a crush tube which as it's name implies, keeps folks from getting crushed in the gap between the frames.
I picked up a crusty military roller tube, found an old leaky aircell, patched the aircell, threw zippers on the crush tube to facilitate the aircell install and that was about all the energy I had left. I figure it's length will work for now and if too many passengers complain, I'll consider cutting it down a little... Later.