Bugs with hinge
Here are the problems I found with hinges, I have run several tests (on earth like) and found that:
Torque does not actually function on any of the three hinge (small grid, 3x3 small, and large grid,) I had hinge+piston+hinge+hinge+piston+drill the first Hinge is just not strong enough (both Large grid and small) to lift this combo, torque should be able to push this over the limit but it does not do anything.
3X3 small grid attaching to large Hinge joint calls clang (causes an explosion) on all my tests
3X3 small grid still sees itself as small grid for purpose of block placement after the joint (may be part of above issue)
3x3 small grid does not have the option to add a large or small head (assuming the head is meant to be either a small or large size block.