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).

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).