Kinner R-5

The Kinner R-5 is an American five cylinder radial engine for light general and sport aircraft of the 1930s.

R-5
Kinner R-5 (Series-2) engine, in the Oregon Air and Space Museum
Type Radial engine
Manufacturer Kinner Airplane & Motor Corporation
Developed from Kinner B-5
Developed into Kinner C-5
Kinner R-56 installed in a PT-22 Recruit

Design and development

The R-5 was a development of the earlier Kinner B-5, with slightly greater power and dimensions. The main change was the increase in cylinder bore from 117 mm (4.625 in) to 127 mm (5 in) and an increase in piston stroke from 133.3 mm (5.25 in) to 139.7 mm (5.5 in). This led to a corresponding increase in displacement from 7.2 liters (441 cu in) to 8.8 liters (540 cu in). The R-5 was a rough running but reliable engine. Thousands of the R-5 and its derivatives were produced, powering many World War II trainer aircraft. Its military designation was R-540.

Applications

Variants
R-5
R-53
R-55
R-56

Specifications (Kinner R-5)

Data from Jane's all the World's Aircraft 1938[1]

General characteristics

  • Type: 5-cylinder air cooled radial
  • Bore: 5 in (130 mm)
  • Stroke: 5.5 in (140 mm)
  • Displacement: 540 cu in (8.8 l)
  • Length: 32.3 in (820 mm)
  • Height: 45.6 in (1,160 mm)
  • Dry weight: 330 lb (150 kg)

Components

  • Valvetrain: 1 inlet and 1 exhaust valve per cylinder
  • Fuel system: 1 Stromberg carburetor
  • Fuel type: 73 octane
  • Oil system: Dry sump
  • Cooling system: Air

Performance

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See also

Related development

Comparable engines

Related lists

References
  1. Grey, C.G.; Bridgman, Leonard, eds. (1938). Jane's all the World's Aircraft 1938. London: Sampson Low, Marston & company, ltd. p. 88d.

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