Lycoming traces its beginning to a mid-nineteenth century sewing machine manufacturer. In 1907 that company was sold and restructured as the Lycoming Foundry and Machine Company, which produced automobile engines, and later was a subsidiary of the Auburn Auto Company. Although its early aircraft engines were radials, Lycoming entered the light-aircraft engine field early in 1938 with the introduction of the air-cooled, four-cylinder, horizontally opposed O-145 engine.

Along with Continental and Franklin, Lycoming was a basic provider of engines for the ubiquitous bright yellow Piper Cub, synonymous with small general aviation aircraft for many years. Most recently Lycoming became a subsidiary of Textron Inc.

Designed to operate in a vertical position, the XO-435-7 powered the Sikorsky XH-6 and H-6B helicopters. A shaft-driven fan ducted cooling air through a wrap-around engine cowling. Models of the O-435 powered aircraft such as the Vultee-Stinson L-5 and O-62 and Fleetwings XBQ-2 and PQ-12A.

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 1943 Country of Origin United States of America Type PROPULSION-Reciprocating & Rotary Manufacturer Lycoming (Williamsport, Pennsylvania)
Physical Description Type: Reciprocating, horizontally-opposed, 6 cylinders, air-cooled Power rating: 158 kW (212 hp) at 3,000 rpm Displacement: 7.1 L (434 cu. in.) Bore and Stroke: 124 mm (4.9 in) x 98 mm (3.9 in) Weight: 196.4 kg (433 lb) Dimensions Height 75.2 cm (29.6 in.), Width 82.1 cm (32.3 in.), Depth 121.2 cm (47.7 in.)
Materials HAZMAT: Possible Cadmium Plating, Magnesium, Lead
Steel
Paint
Aluminum
Copper Alloy
Magnesium Alloy
Aluminized Fabric
Wool Felt
Paper
Adhesive
Plastic
Compressed Fiberboard
Rubber
Inventory Number A19600107000 Credit Line Transferred from the U.S. Air Force Central Museum Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
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