Kinner K-5, Radial Aircraft Engine
Kinner K-5, Five-cylinder, Air-cooled, Radial Aircraft Engine

Overview

The Kinner K-5 was a popular engine for light general and sport aircraft. With the boom in civilian aviation after Charles Lindberg’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 1,000s powering many World War II trainer aircraft. The K-5 was followed by the B-5, R-5 and R-55.

Specifications (Kinner K-5)

General Characteristics

• Type: Five-cylinder, air-cooled, radial
• Bore: 108 mm (4.25 in)
• Stroke: 133.3 mm (5.25 in)
• Displacement: 6.1 liters (372 in³)
• Length: 482 mm (19 in)
• Height: 1,104 mm (43.5 in)
• Dry weight: 124 kg (275 lb)

Components

• Valvetrain: 1 inlet and 1 exhaust valve per cylinder
• Fuel system: 1 Stromberg carburetor
• Fuel type: 73 Octane
• Cooling system: Air

Performance

• Power output: 100-hp @ 1,810 RPM max/70-hp @ 1,650 RPM cruise
• Compression ratio: 5.0:1
• Power-to-weight ratio: 3.93-hp/lb @ cruise

References

• Wikipedia, the free encyclopedia