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

Rudy Adrian shows off his air-cooled engine collection.

Brass tag for the 1914 1-1/2 HP De Laval Alpha Type F engine
This brass tag for Rudy's 1914 1-1/2 HP De Laval Alpha Type F gas engine shows serial number 21449 and a rated speed of 475 RPM.
Photo by Bill Vossler