Kinner B-5

B-5

A Kinner B-5 on display at the Old Rhinebeck Aerodrome in New York, as used in their Fleet Finch biplane.
Type	Radial engine
Manufacturer	Kinner Airplane & Motor Corporation
Developed from	Kinner K-5
Developed into	Kinner R-5

The Kinner B-5 was a popular five cylinder American radial engine for light general and sport aircraft of the 1930s.

Design and development

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 108 mm (4.25 in) to 117 mm (4.625 in) and a corresponding increase in displacement from 372 cu in (6.1 liters ) to 441 cu in (7.2 liters ). One difference the B-5 had from radial engines of other manufacturers was that each individual cylinder had its own camshaft, a system also used by the contemporary Soviet-built, 8.6 litre-displacement Shvetsov M-11 five cylinder radial, while most other radial engine designs used a "cam ring" for the same purpose, connected to every cylinder's valves. The B-5 was a rough running but reliable engine and the B-5 and its derivatives were produced in the thousands, 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.

Applications

Specifications (Kinner B-5)

General characteristics

Type: Five-cylinder, air-cooled, radial
Bore: 4 ⁵⁄₈in (117mm)
Stroke: 5 ¹⁄₄in (133.3mm)
Displacement: 441 cu in (7.2 liters)
Length: 19 in (482mm)
Diameter: 45⅜ in (1152 mm)
Height: 4.5 in (1,104.8mm)
Dry weight: 295 lb (134 kg)

Components

Valvetrain: 1 Inlet and 1 Exhaust valve per cylinder, individual camshafts for each cylinder
Fuel system: 1 Stromberg Carburetor
Fuel type: 73 Octane
Cooling system: Air

Performance

Power output: 125 hp at 1,925 RPM max/89 hp at 1,725 RPM cruise
Compression ratio: 5.26:1
Power-to-weight ratio: 0.42 hp/lb at cruise

References

Wikimedia Commons has media related to Kinner B-5.

http://www.oldengine.org/members/diesel/Duxford/usaero4.htm
Gunston, Bill (1986). World Encyclopedia of Aero Engines. Newton Abbot: Patrick Stephens. pp. 99–100.

Kinner aero engines

Radial engines	B-5 B-54 C-5 C-7 K-5 R-5 R-53 R-56

Horizontally opposed engines	O-552

United States military piston aircraft engine designation system

H (four-bank H-configuration inline)	H-1640 XH-2240 H-2470 XH-2600 XH-3130 XH-3730 H-4070

I (inverted-V inline)	IV-1430 IV-2040 IV-2220

L (single-bank inline)	L-330 L-365 L-375 L-390 L-410 L-440 L-510 L-825

O (opposed)	O-15 O-40 O-45 O-90 O-100 O-145 O-150 O-170 O-175 O-180 O-190 O-200 (C) O-200 (F) O-205 O-235 O-290 O-300 O-335 O-360 (C) O-360 (L) O-405 O-425 O-435 O-470 O-480 O-520 O-540 (F) O-540 (L) O-550 O-580 O-805 O-1230

R (radial)	R-250 R-265 R-270 R-370 (LB) R-370 (K) R-420 R-440 R-500 R-540 (W) R-540 (K) R-545 R-550 R-600 R-670 R-680 R-720 R-755 R-760 R-790 R-830 R-915 R-975 DR-980 R-985 R-1044 R-1300 R-1340 R-1454 R-1510 R-1535 R-1640 R-1670 R-1690 R-1750 R-1820 R-1830 R-1860 R-2000 R-2060 R-2160 R-2180 R-2600 R-2800 R-3350 R-4090 R-4360 XR-7755

V (upright-V inline)	V-720 V-770 V-1150 V-1237 V-1400 V-1410 V-1440 V-1460 V-1510 V-1560 V-1570 V-1650 (L) V-1650 (P) V-1710 V-1950 V-3420

W (three-bank W-configuration inline)	W-2779

See also: X-1800 US military gas turbine aeroengines Piston engine configurations

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