Kinner B-5
The Kinner B-5 was a popular five cylinder American radial engine for light general and sport aircraft of the 1930s.
Design and development
The B-5 was a development of the earlier K-5 with slightly greater power and dimensions. The main change was the increase in cylinder bore from 108 mm (4.25 in) to 117 mm (4.625 in) and a corresponding increase in displacement from 372 cu in (6.1 liters ) to 441 cu in (7.2 liters ). One difference the B-5 had from radial engines of other manufacturers was that each individual cylinder had its own camshaft, a system also used by the contemporary Soviet-built, 8.6 litre-displacement Shvetsov M-11 five cylinder radial, while most other radial engine designs used a "cam ring" for the same purpose, connected to every cylinder's valves. The B-5 was a rough running but reliable engine. The B-5 and its derivatives were produced in the thousands, powering many World War II trainer aircraft; its military designation was R-440. The B-5 was followed by the R-5 and R-55.
Applications
- Fleet Fawn
- Fleet Finch
- Kinner Sportster
- Kinner Sportwing
- Lincoln AP
- Monocoupe 125
- Redfern DH-2
- Ryan PT-22 Recruit
- Savoia-Marchetti S.56
Specifications (Kinner B-5)
Data from Jane's all the World's Aircraft 1938[1]
General characteristics
- Type: Five-cylinder, air-cooled, radial
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Components
- Valvetrain: 1 Inlet and 1 Exhaust valve per cylinder, individual camshafts for each cylinder
- Fuel system: 1x Holley or Stromberg Carburetor
- Fuel type: 73 Octane
- Oil system: Circulating dry sump system
- Cooling system: Air-cooled
Performance
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- Compression ratio: 5.25:1
- Specific fuel consumption: 0.60 lb/hp hr (0.365 kg/kw hr)
- Oil consumption: 0.025 lb/hp hr (0.0152 kg/kw hr)
- Power-to-weight ratio: 0.42 hp/lb at cruise
See also
Related development
Comparable engines
Related lists
References
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Further reading
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External links
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