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 a 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 of Curtiss, Wright, and v ...

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 their ...

. 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 the result of a partnership between industrialist Henry J. Kaiser and automobile executive Joseph W. Frazer.AVCO Lycoming Lycoming Engines is a major American manufacturer of aircraft engines. With a factory in Williamsport, Pennsylvania, Lycoming produces a line of horizontally opposed, air-cooled, four, six and eight-cylinder engines including the only FAA-certi ...

.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 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 as a trainer, ...

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) was a multi-purpose helicopter used by the United States Army and United States Air Force. It was also license-built by Westland Aircraft as the Westland Whirlwind in the United Kingdom. ...

. 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

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) was a multi-purpose helicopter used by the United States Army and United States Air Force. It was also license-built by Westland Aircraft as the Westland Whirlwind in the United Kingdom ...

Westland Whirlwind Westland or Westlands may refer to: Places *Westlands, 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 near Vaila, ...

Specifications (R-1300-1A)

References

External links