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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
Applications
- Adcox Special
- American Eagle A-129 biplane
- Chamberlin C-2
- Davis D-1-K
- Fleet Model 2
- Granville Brothers Model A biplane
- Kinner Sportster
- Kreutzer Air Coach
- Waco KSO
Specifications (Kinner K-5)
Data from Jane's all the World's Aircraft 1928[2]
- 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)
- 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
- 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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