Kinner K-5

The Kinner K-5 was a popular engine for light general and sport aircraft developed by Winfield B. 'Bert' Kinner.[1] With the boom in civilian aviation after Charles Lindbergh's transatlantic flight the K-5 sold well. The K-5 was a rough running but reliable engine and the K-5 and its derivatives were produced in the thousands, powering many World War II trainer aircraft. The K-5 was followed by the B-5, R-5 and R-55. Military engines were designated R-370

K-5
Kinner K-5 in a Fleet Model 2
Type Radial engine
National origin United States of America
Manufacturer Kinner Airplane & Motor Corporation
Developed into Kinner B-5

Applications

Specifications (Kinner K-5)

Data from Jane's all the World's Aircraft 1928[2]

General characteristics

  • Type: Five-cylinder, air-cooled, radial
  • Bore: 4.25 in (108 mm)
  • Displacement: 372.4 cu in (6.103 l)
  • Length: 19 in (480 mm)
  • Diameter: 43.5 in (1,100 mm)
  • Dry weight: 231 lb (105 kg)

Components

  • Valvetrain: 1 inlet and 1 exhaust valve per cylinder
  • Fuel system: 1 Stromberg carburetor or 1 double Zenith carburetor
  • Fuel type: 73 Octane
  • Oil system: pressure fed through hollow crankshaft
  • Cooling system: Air

Performance

  • Power output:
    • 100 hp (75 kW) at 1,810 rpm maximum
    • 70 hp (52 kW) at 1,650 rpm cruise
  • Compression ratio: 5.0:1
  • Fuel consumption: 7 gal/h (5.8 imp gal/h; 26 l/h)
  • Oil consumption: 0.3125 gal/h (0.2602 imp gal/h; 1.183 l/h)
  • Power-to-weight ratio: 0.36 hp/lb (0.59 kW/kg) at cruise
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References
  1. "Winfield B. "Bert" Kinner Collection, 1919-1993". Retrieved 29 November 2010.
  2. Grey, C.G., ed. (1928). Jane's all the World's Aircraft 1928. London: Sampson Low, Marston & company, ltd. p. 56d.

Further reading
  • Gunston, Bill (1986). World Encyclopedia of Aero Engines. Wellingborough: Patrick Stephens. pp. 99–100.
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