Curtiss Challenger

R-600 Challenger
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.

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