title: Kinner K-5
text: # Kinner K-5
  
  The Kinner K-5 was a popular engine for light general and sport aircraft developed by Winfield B. 'Bert' Kinner. 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
  * Simplex C-2 Red Arrow
  * Sullivan Model K-3 Crested Harpy
  * Waco KSO
  
  ## Specifications (Kinner K-5)
  
  Data from Jane's all the World's Aircraft 1928
  
  ### 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
  