Harley-Davidson models. In the late summer of 1929, Harley-Davidson introduced its 45 cubic inches (737 cm³) flathead V-Twin to compete with the Indian 101 Scout and the Excelsior Super X. This was the "D" model, produced from 1929 to 1931. Riders of Indian motorcycles derisively referred to this model as the "three cylinder Harley" because the generator was upright and parallel to the front cylinder. The Great Depression began a few months after the introduction of their 45 cubic inch (737 cm³) model. Harley-Davidson's sales fell from 21,000 in 1929 to 3,703 in 1933. Despite this, Harley-Davidson unveiled a new lineup
Harley-Davidson almost went bankrupt. The "Harley-Davidson" name was mocked as "Hardly Ableson", "Hardly Driveable," and "Hogly Ferguson", and the nickname "Hog" became pejorative. In 1977, following the successful manufacture of the Liberty Edition to commemorate America's bicentennial in 1976, Harley-Davidson produced what has become one of its most controversial models, the Harley-Davidson Confederate Edition. The bike was essentially a stock Harley with Confederate-specific paint and details. In 1981, AMF sold the company to a group of 13 investors led by Vaughn Beals and Willie G. Davidson for $80 million. Inventory was strictly controlled using the just-in-time system. In the early eighties,