The Wright R-1300 Cyclone 7 is an American air-cooled seven-cylinder supercharged radial aircraft engine produced by

Curtiss-Wright The Curtiss-Wright Corporation is an American manufacturer and services provider headquartered in Davidson, North Carolina, with factories and operations in and outside the United States. Created in 1929 from the consolidation (business), consoli ...

Design and development

The R-1300 is basically a single row

Wright R-2600 The Wright R-2600 Cyclone 14 (also called Twin Cyclone) is an American radial engine developed by Curtiss-Wright, and widely used in aircraft in the 1930s and 1940s. History In 1935, Curtiss-Wright began work on a more powerful version of thei ...

. 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 The Kaiser-Frazer Corporation (1947–1953 as Kaiser-Frazer) was an American automobile company. It was founded jointly by industrialist Henry J. Kaiser and automobile executive Joseph W. Frazer.AVCO Lycoming.USAF Technical Manuals, Parts Breakdown, Overhaul Instructions 1951-1971 T.O. 2R-1300-14 The engine was used in combat — the R-1300-1A and -1B in the A model

North American T-28 Trojan The North American Aviation T-28 Trojan is a Radial engine, radial-engine military trainer aircraft manufactured by North American Aviation and used by the United States Air Force and United States Navy beginning in the 1950s. Besides its use ...

and the R-1300-3, -3A, -3C and -3D in the

Sikorsky H-19 Chickasaw The Sikorsky H-19 Chickasaw (company model number S-55) is a multi-purpose piston-engined helicopter that was used by the United States Army and United States Air Force. It was also license-built by Westland Aircraft as the Westland Whirlwin ...

. The R-1300-1B was used to power the

Ayres Thrush The Ayres Thrush, formerly the Snow S-2,Macdonald, 1964. p.138. Aero Commander Ag Commander, and Rockwell Thrush Commander, is an American agricultural aircraft produced by Ayres Corporation and more recently by Thrush Aircraft. It is one of the ...

. The R-1300-4 and -4A were used in the

N class blimp The N-Class, or as popularly known, the "Nan ship", was a line of non-rigid airships built by the Goodyear Aircraft Company of Akron, Ohio for the US Navy. This line of airships was developed through many versions and assigned various designato ...

; 50 of these variants were produced by AVCO. Early-production engines had vibration problems, an improved lateral dampener in the crank brought about most of the model changes.

Variants

;R-1300-1A : ;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. ;R-1300-2A : ;R-1300-3 :Derated to 690.3 hp (515 kW), uses forced-air cooling fan and uses a PD9G1 carburetor. ;R-1300-4 :Similar to the R-1300-1, uses some different accessory components. ;R-1300-CB7A1 :With reduction gear for use on fixed wing aircraft.

Applications

* Hispano HA-100 * Lockheed Saturn *

Rockwell Thrush Commander The Ayres Thrush, formerly the Snow S-2,Macdonald, 1964. p.138. Aero Commander Ag Commander, and Rockwell Thrush Commander, is an American agricultural aircraft produced by Ayres Corporation and more recently by Thrush Aircraft. It is one of the ...

Sikorsky H-19 The Sikorsky H-19 Chickasaw (company model number S-55) is a multi-purpose piston-engined helicopter that was used by the United States Army and United States Air Force. It was also license-built by Westland Aircraft as the Westland Whirlwin ...

Westland Whirlwind Westland or Westlands may refer to: Places *Westlands, Nairobi, an affluent neighbourhood in the city of Nairobi, Kenya * Westlands, Staffordshire, a suburban area and ward in Newcastle-under-Lyme *Westland, a peninsula of the Shetland Mainland ne ...

Specifications (R-1300-1A)

References

External links