Wright R-1300

Wright R-1300

The Wright R-1300 "Cyclone 7" was a US aircooled 7-cylinder supercharged radial engine produced by Curtiss-Wright.

The R-1300 is more or less a single row Wright R-2600. The engine was in mass production but not widely used. Engineering begun in 1942 but the first flight of an R-1300 did not take place until 1949. The engine was produced in license at Kaiser-Frazer and, later, at Lycoming

The engine saw action in the North American T-28 Trojan and the Sikorsky UH-19 Chickasaw. Furthermore it was used in the Ayres Thrush.

For use in helicopters the R-1300-3 was derated to 690.3 hp (515 kW)and uses forced cooling.

pecifications (R-1300-1)

pistonspecs

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=1,674 in (27.4 L)
length=48.22 in (1,225 mm)
diameter=55 in (1,397 mm)
width=
height=
weight=917lb (461 kg)
valvetrain=Two pushrod-actuated valves per cylinder with sodium-cooled exhaust valve
supercharger=1-stage
turbocharger=
fuelsystem=Stromberg PR48A downdraft carburetor with automatic mixture control
fueltype=
oilsystem=
coolingsystem=Air-cooled
power=800 hp (596 kW)
specpower=0.47 hp/in³ (21.75 kW/L)
compression=6.9:1
fuelcon=
specfuelcon=
oilcon=
power/weight=0.87hp/lb (1.29 kW/kg)

Application

* N class blimp
* North American T-28 Trojan
* Rockwell Thrush Commander
* Sikorsky H-19
* Westland Whirlwind

Related contents

* Wright Cyclone family
* Wright R-1820 Cyclone 9
* Wright R-2600 Cyclone 14
* Wright R-3350 Cyclone 18 (Duplex Cyclone)


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