Collimatrix Posted July 11, 2016 Report Share Posted July 11, 2016 Piston engines have been doing a good job of converting chemical energy into mechanical work for about a century and a half now, but this hasn't stopped various people from trying to seal a pressure-bearing volume that isn't cylindrical. So far only Felix Wankel and Mazda have really pulled it off, but there will always be dreamers: https://www.youtube.com/watch?v=k7R9xXPfIio And then there's this thing, which I guess has pistons but the pistons spin in a circle: Walter_Sobchak 1 Quote Link to comment Share on other sites More sharing options...
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