Kinner K-5, Radial 5 Engine

Object Details

Physical Description: Type: Reciprocating, 5 cylinders, radial, air-cooled; Power rating: 74.6 kW (100 hp) at 1,810 rpm; Displacement: 6.1 L (372 cu in.); Bore and Stroke: 108 mm (4.3 in.) x 133 mm (5.3 in.); Weight: 124.7 kg (275 lb)
Summary: Kinner Motors, Inc. succeeded California’s Kinner Airplane and Motor Corporation, first experimenting with the three cylinder K-1 in 1921, and then producing the five-cylinder K-2 in 1927. In 1928, the Kinner K-3 five-cylinder, air-cooled radial engine was certificated. Early in 1929, Kinner started using a completely redesigned and improved cylinder, which was approved without certification. About the time that the improvements were put into effect, the engine became known as the Kinner K-5 Series 2. On April 29, 1930, it was given a rating of 74.6 kW (100 hp). A follow-on version, the Kinner K-5B was rated at 78.3 kW (105 hp). These were good engines, but had a reputation for heavy vibration, recognizable by their distinctive throbbing sound, which was unlike any other radial engine.; Among the K-5 powered aircraft were the Fleet Model 2, Waco KNF and KBA, Mono Aircraft Monosport 2, and Bird BK.

Circa 1929

Materials: Ferrous Alloy; Non-Magnetic Metal; Plastic; Unknown Coating; Cork; Paint; Rubber
Dimensions: Overall: 275lb. (124.7kg); Other (on stand): 4 ft. 2 in. × 3 ft. 6 in. × 4 ft. 2 in. × 3 ft. 9 3/4 in. × 4 ft. × 4 ft. 2 in. × 3 ft. 6 in. (127 × 106.7 × 127 × 116.2 × 121.9 × 127 × 106.7cm); Other: 2 ft. 8 1/4 in. (81.9cm); 3-D (Dimensions for Kinner K-5B): 81.9 × 116.2cm (2 ft. 8 1/4 in. × 3 ft. 9 3/4 in.)

National Air and Space Museum

GUID (Link to Original Record): http://n2t.net/ark:/65665/nv9c38e842c-8ace-48e1-8898-0a0a58e77dfc