Wright R-1300

R-1300

R-1300 in helicopter configuration
Type	Radial engine
National origin	United States
Manufacturer	Wright Aeronautical
First run	1942
Major applications	North American T-28 Trojan
Developed from	Wright R-2600

The Wright R-1300 Cyclone 7 is an American air-cooled seven-cylinder supercharged radial aircraft engine produced by Curtiss-Wright.^[1]

Design and development

The R-1300 is basically a single row Wright R-2600. The engine was mass-produced but not widely used. Engineering began in 1942 but the first flight of an R-1300 did not take place until 1949. The engine was produced under license by Kaiser-Frazer and later by AVCO Lycoming.^[2]

The engine was used in combat — the R-1300-1A and -1B in the A model North American T-28 Trojan and the R-1300-3, -3A, -3C and -3D in the Sikorsky H-19 Chickasaw. The R-1300-1B was used to power the Ayres Thrush. The R1300-4 and -4A were used in the N class blimp; 50 of these variants were produced by AVCO.^[2]

Early-production engines had vibration problems, an improved lateral dampener in the crank brought about most of the model changes.^[2]

Variants

R-1300-2: A direct drive version of the R-1300-1. It had a 0.5625:1 reduction drive. Both used the PD9F1 carburetor.^[2]
R-1300-3: Derated to 690.3 hp (515 kW), uses forced-air cooling fan and uses a PD9G1 carburetor.^[2]
R-1300-4: Similar to the R-1300-1, uses some different accessory components.^[2]
R-1300-CB7A1: With reduction gear for use on fixed wing aircraft.

Applications

Specifications (R-1300-1A)

Data from Type Certificate Data Sheet 5E-14.^[1]

General characteristics

Type: 7-cylinder supercharged air-cooled single row radial engine
Bore: 6.125 in (155.6 mm)
Stroke: 6.312 in (160.2 mm)
Displacement: 1,301 cu in (21.3 L)
Length: 48.22 in (1,225 mm)
Diameter: 55 in (1,397 mm)
Dry weight: 1,055 lb (478 kg)

Components

Valvetrain: Two pushrod-actuated valves per cylinder with sodium-cooled exhaust valve
Supercharger: 1-stage
Fuel system: Bendix-Stromberg PD9F1 downdraft carburetor with automatic mixture control
Cooling system: Air-cooled

Performance

Power output: 800 hp (596 kW)
Specific power: 0.61 hp/in³ (27.94 kW/L)
Compression ratio: 6.20:1
Power-to-weight ratio: 0.76hp/lb (1.25 kW/kg)

References

↑ 1.0 1.1 Federal Aviation Administration (n.d.). "WRIGHT AERONATICAL DIVISION CURTISS-WRIGHT CORPORATION - MODELS: Wright Military Cyclone R-1300 Series T.C. NUMBER: 5E-14". Retrieved 2009-08-26.
↑ 2.0 2.1 2.2 2.3 2.4 2.5 USAF Technical Manuals, Parts Breakdown, Overhaul Instructions 1951-1971 T.O. 2R-1300-14

External links

Wikimedia Commons has media related to Wright R-1300.

Video of an R-1300 engine run on a North American T-28A

Wright Aeronautical and Lawrance Aero Engine Company aircraft engines

Wright inline engines

E
Gypsy
T-1
T-2
T-3 (V-1950)
T-4
V-720
IV-1460
IV-1560

Lawrance radials

Wright radials

Whirlwind	R-540 R-760 R-790 R-975 R-1510 R-1670

Cyclone	R-1300 R-1820 R-2600 R-3350 R-4090

Others	Gale R-1200 R-2160

Wright turbojets

Wright turboprops/turboshafts

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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