1906 Adams-Farwell 5-cylinder rotary engine

[Jon]

This video is from the 2011 Pebble Beach Concours D'Elegance. It's the only remaining Adams-Farwell car, a 6A Convertible Roundabout from 1906.

The car is powered by an extremely unusual rotary engine in which the crank is mounted to the frame, and the engine crankcase spins around it. The spinning crankcase and cylinders act as their own flywheel, and the air-cooled design meant that a radiator is not necessary. See it run at 3:55.