Even in the supplied 14 second video you can see where the combustion process creates pressure OPPOSING the pressure necessary to move the rotor in the desired location.
I call deal killer.
Compared to this:
Maybe some should consider it further. No valves, no con rods, no combustion pressure trying to reverse the rotational direction.
It all equals a physics based dead end as far as anything approaching a better engine design.
History has proven it. Refine it all you want, you may get a little better but the basics remain the same.
Maybe we would spend our time better defining the true sources of "pumping losses". What percentage would you attribute to cam and valve train operating losses?
regards
mech