Between 1928 and 1929, Al Menasco began developing the first of a series of inverted, inline air-cooled engines that became his design hallmark. The advantages of this design included improved pilot visibility, a high propeller centerline, and streamlined, low-drag installation. High performance 4- and 6-cylinder Menasco engines powered many small racing aircraft to victory in the 1930s.
The 200-horsepower, supercharged Model B6S was type certificated in 1934. A B6S powered the Howard DGA-4 "Mike" aircraft, which was raced successfully in the Thompson and Greve Trophy competitions. The engine displayed here powered a British Miles Mohawk owned by Charles Lindbergh and used by him on flights in Europe, India, and Asia in 1937 and 1938.
Type: Reciprocating engine, 4 cylinders, inline, air cooled
Power rating: 200 hp at 2,250 rpm
Displacement: 8 l (489 cu in)
Weight (dry): 192 kg (423 lb)
Manufacturer: Menasco Manufacturing Co., Los Angeles, Calif.
Gift of John Nessen.
Country of Origin: United States of America
Overall: 3ft 2 1/2in. x 2ft 6in. x 5ft 10 1/2in., 398lb. (97.79 x 76.2 x 179.07cm, 180.5kg)
Aluminum, Steel, Copper, Rubber, Preservative coating, Paint, Textile, Phenolic
6 cylinders; 200 hp/2,250 rpm; air cooled; manufactured circa 1934; has data plate, supercharger; missing generator, exhaust manifold; on stand.