Sturtevant D-6 In-line Engine, In-line 6 Engine

Beginning in 1911, the Sturtevant Manufacturing Co. produced a number of engine models, all water cooled in-line vertical and V-types. Unlike most of its rivals, this engine was equipped with L-head rather than overhead valves. It powered Burgess, Curtiss, Wright, and Sturtevant seaplanes, many of which were purchased by the U.S. government.