Kinner C-5

C-5
Type	Radial engine
Manufacturer	Kinner Airplane & Motor Corporation
Developed from	Kinner R-5

The Kinner C-5 was an American five cylinder radial engine for small general and sport aircraft of the 1930s.

Design and development

The C-5 was a development of the earlier R-5 with greater power and dimensions. The main change was the increase in cylinder bore from 128 mm (5.0 in) to 143 mm (5.625 in) and an increase in cylinder stroke from 140 mm (5.5 in) to 145 mm (5.75 in). This led to a corresponding increase in displacement from 8.85 liters (540 cu in) to 11.71 liters (715 cu in).

The U.S. military designation was R-720.

Applications

Consolidated YPT-11B
Kellett K-3
Kinner P
Stearman YPT-9C
Verville YPT-10D
Waco OSO
Waco OEC
Waco ODC
Waco OBF

Specifications

data from ^[1]

General characteristics

Type: 5-cylinder air cooled radial
Bore: 5.625 in (143 mm)
Stroke: 5.75 in (145 mm)
Displacement: 715 cu in (11.71 liters)
Length: 34.8in (884 mm)
Diameter: 50 in (1,270 mm)
Dry weight: (dry) 420 lb (190 kg)

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: maximum 245 hp at 2,200 rpm , cruise 210 hp at 1,900 rpm
Compression ratio: 5.25:1
Specific fuel consumption: 0.6 lb (273 gm) /hp/hr
Oil consumption: 0.015 lb (7 gm) /hp/hr

References

↑ Grey 1974, pp. 88d

Grey, C.G. (1972). Jane's All the World's Aircraft 1938. London: David & Charles. pp. 88d. ISBN 0-7153-5734-4.

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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