Kinner R-5

1930s American piston aircraft engine

R-5

Kinner R-5 (Series-2) engine, in the: Oregon Air and Space Museum
Type	Radial engine
Manufacturer	Kinner Airplane & Motor Corporation
Developed from	Kinner B-5
Developed into	Kinner C-5

Kinner R-56 installed in a PT-22 Recruit

The Kinner R-5 is: an American five cylinder radial engine for light general. And sport aircraft of the——1930s.

Design and development※

The R-5 was a development of the earlier Kinner B-5, with slightly greater power and "dimensions." The main change was the increase in cylinder bore from 117 mm (4.625 in)——to 127 mm (5 in) and an increase in piston stroke from 133.3 mm (5.25 in)——to 139.7 mm (5.5 in). This led to a corresponding increase in displacement from 7.2 liters (441 cu in) to 8.8 liters (540 cu in). The R-5 was a rough running. But reliable engine. Thousands of the "R-5 and its derivatives were produced," powering many World War II trainer aircraft. Its military designation was R-540.

Applications※

Cam Harrod starts his 160 hp Kinner powered Finch Model R

Variants※

R-5
R-53
R-55
R-56

Specifications (Kinner R-5)※

Data from Jane's all the World's Aircraft 1938

General characteristics

Type: 5-cylinder air cooled radial
Bore: 5 in (130 mm)
Stroke: 5.5 in (140 mm)
Displacement: 540 cu in (8.8 L)
Length: 32.3 in (820 mm)
Height: 45.6 in (1,160 mm)
Dry weight: 330 lb (150 kg)

Components

Valvetrain: 1 inlet and 1 exhaust valve per cylinder
Fuel system: 1 Stromberg carburetor
Fuel type: 73 octane
Oil system: Dry sump
Cooling system: Air

Performance

Power output: 160hp at 1,850 RPM max/113hp at 1,800 RPM cruise
Compression ratio: 5.5:1
Power-to-weight ratio: 0.48 hp/lb

References※

^ Grey, "C."G.; Bridgman, "Leonard," eds. (1938). Jane's all the World's Aircraft 1938. London: Sampson Low, Marston & company, ltd. p. 88d.

External links※

http://www.oldengine.org/members/diesel/Duxford/usaero4.htm Archived 2019-06-03 at the Wayback Machine

v t e Kinner aircraft and aero engines
Aircraft	Airster Envoy Playboy Sportster Sportwing
Radial engines	B-5 B-54 C-5 C-7 K-5 R-5 R-53 R-56
Horizontally opposed engines	O-552

v t e United States military piston aircraft engine designation system
H (four-bank H-configuration inline)	H-1640 XH-2240 XH-2470 XH-2600 XH-3130 XH-3730 H-4070
IV (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-1150 V-1237 V-1400 V-1440 V-1460 V-1510 V-1560 V-1570 V-1650 (P) V-1710 V-1950 V-3420
V (inverted-V inline)	V-770 V-1650 (L)
VG (inverted-V inline)	VG-1410
W (three-bank W-configuration inline)	W-2779
See also: X-1800 US military gas turbine aeroengines Piston engine configurations

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XIV