Bore and Stroke: 156 mm (6.125 in.) x 174 mm (6.875 in.) The Wright Cyclone series began in 1924 with a U.S. Navy contract for a nine-cylinder air-cooled radial engine having approximately the same ...
Bore and Stroke: 155.6 mm (6.125 in.) x 160.3 mm (6.3125 in.) Wright Aeronautical carried on important experimental work during 1936, culminating in announcement of the Wright Cyclone 14 early in 1937 ...