Curtiss R-600

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

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 180 hp (134 kW) at 2,000 rpm.


Specifications (R-600)[edit]

Data from[citation needed]

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: 42.625in (1082.7 mm)
  • Dry weight: 420lb (190.5 kg)


  • Cooling system: Air-cooled


  • Power output: 180 hp (134 kW) at 2,000 rpm

See also[edit]

Comparable engines
Related lists


External links[edit]