Happy New Year everyone and especially to you Howard!
Patrick and Dirk are obviously the same opinion about the hinge. I thought
about the front folding into the back and had the idea to use a middle part
with a hirth locking which is clamped between the tubes coming from the
side. The middle part then offers the stump axles for your pivot. But this
idea still lacks a proper solution for your front part has to be twisted.
And on top it's maybe to heavy. So that's all for now.
Cheers,
Steffen