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Beginning around 1922, J.F. Irwin’s Irwin Aircraft Company of Watsonville, California designed and provided blueprints for small, single seat sport aircraft which were supposedly simple enough for enthusiastic amateurs to build. In 1925, it introduced its Meteormotor. In 1926, it was improved by using copper instead of iron for cylinder cooling fins. Although classified as a radial, it was actually two opposed twins at ninety degrees to each other. This engine powered the Irwin M-T-2 and C-C-1 aircraft.

 Display Status

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Object Details
Date ca. 1926 Country of Origin United States of America Type PROPULSION-Reciprocating & Rotary Manufacturer Irwin Aircraft Company (Watsonville, California)
 Physical Description Type: Reciprocating, radial, 4 cylinders, x-configuration; 2-stroke cycle, air-cooled Power rating: 14.9 kW (20 hp) at 2,000 rpm Displacement: 1.18 L (72 cu. in.) Bore and Stroke: 73 mm (2.875 in.) x 70 mm (2.75 in.) Weight: 27 kg (60 lb) Dimensions Depth 101.6 cm (40 in.), Length 82.6 cm (32.5 in.), Width 65.4 cm (25.75 in.)
 Materials Steel, Aluminum, Rubber, Copper, Paint, Ceramic, Brass
 Inventory Number A19571001000 Credit Line Gift of Preston Kirk Data Source National Air and Space Museum Restrictions & Rights Open Access (CCO)
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