Jun/Jul 2008

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Oil Field Engine News

Holtkamp Oil Field Engines

By Russell Farmer

The Oil Field Engine Society recently received correspondence from Paul "Dan" Vollman, Evansville, Ind., sharing information about his "Wind Wheel" oil field engine built in Centralia, Ill., by the Holtkamp Electric Service Co.

These were essentially Kohler engines purchased by Holtkamp and modified at their own machine shop for oil field service. The modifications included a flywheel with integrated, cast-in spoke fan (thus the name of the engine, Wind Wheel), a flywheel guard, a mounting base, a Rockford gearbox, a twin-disc clutch, an externally mounted Wico impulse magneto, a gas or gasoline carburetor, and various cylinder bore and piston modifications. Electric starters were offered as an option. Dan's engine is a 1958 4 HP K330COF, single-cylinder model, and these engines were also produced in ...

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