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" You&amp;#039;re looking at one very clever piece of engineering. It&amp;#039;s an Adams-Farwell air-cooled,\u00A0piston-driven, rotary engine. The crankshaft stays put, connected to the frame of the car, while the crankcase rotates around it to drive the vehicle. In this case, that&amp;#039;s a 1906 Adams-Farwell 6A Convertible Roundabout. The buggy originally came with a three-cylinder of the same design, but Mr. Farwell himself yanked that engine and plopped in the 50-horsepower five-cylinder unit you see here. Watching it in operation is both terrifying and charming. Check it out in the video below.      Via BangShift "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.roadandtrack.com/car-culture/classic-cars/news/a25195/this-stationary-crankshaft-engine-is-a-thing-of-sorcery/>