Engine Ambition: Air-Cooled Engines Capture Collector's Interest

Rudy Adrian shows off his air-cooled engine collection.

1914 1-1/2 HP De Laval Alpha Type F engine
The head of Rudy Adrian's 1914 1-1/2 HP De Laval Alpha Type F engine, with the igniter on the right above the pushrod.
Photo by Bill Vossler