Ace Motor Corporation

The Ace Motor Corporation was founded in 1919 by William Henderson in Philadelphia, Pennsylvania. Henderson was the original founder of the Henderson Motorcycle Company of Detroit in 1911. Henderson Motorcycle Company was sold to Ignaz Schwinn in 1917, who manufactured Schwinn Bicycles and Excelsior Motorcycles. Henderson worked at Schwinn until 1919 when he resigned to form Ace Motor Corporation.

Production of the new Ace Motorcycles began in 1920. The basic design was a luxury 4-cylinder bike with a chain drive, carefully designed not to infringe on any existing patents owned by Schwinn or Excelsior. Two years later, William Henderson died in a tragic motorcycle accident while test riding a new Ace Sporting Solo and was hit by a motor vehicle. The company ceased production in 1924 and was purchased by Indian Motorcycle Company in 1927.

Production of Ace motorcycles moved to Springfield Massachusetts and the motorcycles were marketed as the Indian Ace for one year. The Ace name was dropped and Indian continued to manufacture the 4-cylinder Indian until 1942.