Curtiss R-600 Challenger

The Curtiss R-600 Challenger was an unusual six-cylinder, double-row, air-cooled, radial engine for aircraft use built in the United States in the late 1920s. It developed 170 to 180 horsepower (127 to 134 kW).

R-600 Challenger
Preserved R-600 engine
Type Radial engine
Manufacturer Curtiss Aeroplane and Motor Company
First run 1920s

Design and development

Curtiss started work on a small six-cylinder engine in May 1927.[1] The engine was unusual in its design with aluminium cylinders mounted at 60°, so that it was in effect two staggered three cylinder engines.[2] The engine was first run in December 1927, and was taken to market producing between 170 and 180 horsepower (127 and 134 kW) at 1,800 rpm.[1]

Applications

Specifications (R-600)

Data from Nutt, 1928 p.842[3]

General characteristics

  • Type: Six-cylinder, double-row, radial engine
  • Bore: 5.125 in (130.2 mm)
  • Stroke: 4.875 in (123.8 mm)
  • Displacement: 603.4 cu in (9.89 L)
  • Diameter: 42.625 in (1082.7 mm)
  • Dry weight: 420lb (190.5 kg)

Components

  • Cooling system: Air-cooled

Performance

  • Power output: 170 hp (127 kW) at 1,800 rpm

See also

Comparable engines

Related lists

References

Citations
  1. Nutt 1928, p. 840.
  2. Nutt 1928, p. 809.
  3. Nutt 1928, p. 842.

Bibliography
  • Nutt, Arthur (8 September 1928). "The Curtiss "Challenger"". Aviation: 808–842.
  • USAF museum

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