- Home
- Collections
- Search the Collection
- Engine, Aircooled Motors (Franklin) O-335-5D, Horizontally-Opposed 6
Engine, Aircooled Motors (Franklin) O-335-5D, Horizontally-Opposed 6
Object Details
- Physical Description
- Type: Reciprocating, 6 cylinders, Horizontally opposed, Air-cooled
- Power rating: 157 kW (210 hp) at 3,200 rpm
- Displacement: 5.5 L (335 cu in.)
- Bore and Stroke: 114 mm (4.50 in.) x 89 mm (3.50 in.)
- Weight: 130.6 kg (288 lb)
- Summary
- Several engineers of the failed Franklin Automobile Company of Syracuse, New York, a manufacturer of air-cooled automobiles, formed Air Cooled Motors in 1935. By 1938 a range of flat-4 and 6 aircraft engines was being produced, retaining the Franklin name.
- Installed vertically, with a fan providing additional engine cooling, the O-335-5D powered the Bell TH-13M Sioux helicopter and its civil counterpart, the Model 47.
- In 1975, the company disbanded and sold all rights to the Polish government, becoming part of PZL, an association of Polish aero and engine manufacturers. Following the 1989 fall of Communism, the firm became WSK PZL – Rzeszów.
- Credit Line
- Transferred from the U.S. Marine Corps, Marine Corps Air-Ground Museum and Museums Branch Activities
- Data Source
- National Air and Space Museum
- Date
- Circa 1950
- Inventory Number
- A19870202000
- Manufacturer
- Aircooled Motors Corporation (Franklin)
- Restrictions & Rights
- Usage conditions apply
- Type
- PROPULSION-Reciprocating & Rotary
- Materials
- Steel
- Paint
- Aluminum
- Rubber
- Cadmium Plating
- Copper Alloy
- Plastic
- Dimensions
- Height 65.4 cm (25.75 in.), Width 78.4 cm (30.88 in.), Depth 91.4 cm (36 in.)
- Country of Origin
- United States of America
- See more items in
- National Air and Space Museum Collection
- Record ID
- nasm_A19870202000
- Usage
- Not determined