[dcb]

Thanks for sharing, it is curious, could be made to turn probably, lots of details remain though. Just general observations here, I'm sure you are aware. If I understand it right, it looks like where the pistons meet is a busy place.

That bearing has to function as both crank and piston port. So it is hollow with intake and exhaust portings, yet strong enough to be a crank pin, and be articulated (which will change the port timing slightly) .

Also note that model will be out of balance when in engine mode.

The cooling fins on the model are not part of the final design I assume.

How efficient is a CVT for a high torque flywheel?