Yes, that's why I posted this thread. The engines in the YouTube videos are NOT radial engines. They are rotary engines. The crankshaft is affixed to the frame of the airplane and the whole engine block, pistons and all, spin around the crankshaft. It's vice versa in a radial engine.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13