Re: Running Hot
I think the incentive was low parts count and weight compared to a reciprocating engine of similar smoothness. It takes a lot of cylinders and balance weights to make a smooth piston engine. With Wankel you get a six cylinder engine with 2 or 3 moving parts, effectively eliminating con rods, valves, camshafts, valve gear. So yes, I can see why effort was put into it. If fuel consumption wasn't a Big Thing, it would have been more keenly adopted. It still makes my mind boggle to think of the thrust on the rotor and what the poor tip seals suffer. I watched, and heard, the Mazda win Le-Mans a few years ago but still have diffculty believing it!
Doesn't say that in the manual