Indian Motocycle Manufacturing Company color options in 1934. Models of that era had Indian's famous war bonnet logo on the gas tank. Indian's huge Springfield factory was known as the Wigwam, and native American imagery was much used in advertising. In 1940, Indian sold nearly as many motorcycles as its major rival, Harley-Davidson. During this time, Indian also manufactured other products such as aircraft engines, bicycles, boat motors and air conditioners. The Indian Scout was built from 1920 through 1949. It rivaled the Chief as Indian's most important model. The Scout was introduced for 1920. Designed by Charles B. Franklin, the Scout had its
Harley-Davidson Shovelhead engine from the enclosed chain, along with a 5-speed transmission and rubber motor mounts to help reduce vibration. In 1981, Harley Davidson purchased AMF's share of the company back, adding a new oil pump, improved valve guides, and lowering the compression to help the engines run on the lower quality gasoline in the United States. The engine was produced until 1984, where the Evolution engine, which had aluminum heads and barrels, began to take over on most models. The engine could still be found in certain models such as the FLH in 1985, but was shortly replaced by the succeeding Evolution