The "American Henderson Motorcycle Company" was started in 1911, by Tom W and William G.Henderson in Detroit, Michigan. Henderson produced its first motorcycle Henderson 1911 in 1911, with its 934ccm in-line (IOE), or "inlet over exhaust" 4-cylinder motor. A signature styling cue of the Henderson was its long wheelbase and correspondingly long gastank. In 1911 the first "Prototype" models were produced with a belt drive. More specs and user manual of Henderson 1911 you can see in next overview.