Object Details
- Manufacturer
- Lycoming (Williamsport, Pennsylvania)
- Physical Description
- Type: Reciprocating, 9 cylinders, radial, air-cooled
- Power rating: 220 kW (295 hp) at 2,300 rpm
- Displacement: 11.1 L (680 cu in)
- Bore and Stroke: 117 mm (4.6 in.) X 114 mm (4.5 in.)
- Weight: 248 kg (547 lb)
- Summary
- Lycoming began as a subsidiary of the Auburn Auto Company, and the R-680 was a development version of its first 138 kW (185 hp) aircraft engine. It was one of a number of engines designed to replace the ubiquitous Curtiss OX-5 following World War I. The R-680 was type certificated in early-1930, and originally rated at 157 kW (210 shp). Considered a very reliable engine, more than 26,000 were built before production ended following World War II.
- The R-680 powered the Stearman PT-13 primary American military trainer during the 1930s and 1940s, for which more than 2,000 engines were built. This model R-680-9 was an Army Air Forces engine that powered the Stinson L-1 and L-12, Curtiss AT-9/A, Beech AT-10, Stearman PT-9B, and Stinson CQ-2 aircraft.
- Credit Line
- Gift of San Jose State University
- Circa 1940
- Inventory Number
- A19860279000
- Restrictions & Rights
- Usage conditions apply
- Type
- PROPULSION-Reciprocating & Rotary
- Materials
- Magnesium Alloy
- Steel
- Aluminum
- Stainless Steel
- Copper Alloy
- Rubber
- Paint
- Phenolic Resin
- Natural Fabric
- Paper
- Dimensions
- Approximate: 99.1 × 109.2 × 109.2cm (39 × 43 × 43 in.)
- Storage: 134.6 × 132.7 × 162.6cm (53 in. × 52 1/4 in. × 64 in.)
- Overall: 547lb. (248.1kg)
- Other: 43 1/4 x 37 1/2in. (109.9 x 95.3cm)
- Country of Origin
- United States of America
- See more items in
- National Air and Space Museum Collection
- National Air and Space Museum
- Record ID
- nasm_A19860279000
- GUID (Link to Original Record)
- http://n2t.net/ark:/65665/nv9c509972e-a1ef-42ff-87b2-d95dadf22179
