Kinner B-5

From Wikipedia, the free encyclopedia

The Kinner B-5 was a popular engine for light general and sport aircraft. The B-5 was a development of the earlier K-5 with slightly greater power and dimensions. The main change was the increase in cylinder bore from 108mm (4.25in) to 117mm (4.625in) and a corresponding increase in displacement from 6.1 liters (372 cu in) to 7.2 liters (441 cu in). The B-5 was a rough running but reliable engine and the B-5 and its derivatives were produced in the 1,000s, powering many World War II trainer aircraft, its military designation was R-440. The B-5 was followed by the R-5 and R-55.

[edit] Specifications (Kinner B-5)

General characteristics

• Type: Five-cylinder, air-cooled, radial
• Bore: 117mm (4.625in)
• Stroke: 133.3mm (5.25in)
• Displacement: 7.2 Liters (441 cu in)
• Length: 482mm (19in)
• Height: 1,104.8mm (43.5in)
• Dry weight: 134kg (295lb)

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: 125hp @ 1,925 RPM max/89hp @ 1,725 RPM cruise
• Compression ratio: 5.26:1
• Power-to-weight ratio: 3.31hp/lb @ cruise

[edit] Applications

• Fleet Fawn
• Kinner Sportster
• Kinner Sportwing
• Monocoupe 125

[edit] References

• http://www.oldengine.org/members/diesel/Duxford/usaero4.htm
• Gunston, Bill (1986). World Encyclopedia of Aero Engines. Wellingborough: Patrick Stephens, 99-100. 

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