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Old 12-12-2014, 04:29 PM   #13 (permalink)
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A Theoretically Ideal engine would likely be a expandable spherical chamber but I am not sure how that would work. Circles are easier to seal with a back up compression ring, but this engine doesn't seem to have the traditional problems of a wankel seal because the sides of the apex seal can butt up against the side walls of the housing.

Old Mechanic: Could you tell me which frame (or second) in the 14sec video you see the pressure opposing rotation? I'm pretty sure regular piston engines also ignite the mixture before TDC by about 30 of crank rotation which also tries to oppose the crank.

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