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 2008, Harley-Davidson stopped disclosing the average age of riders; at this point it was 48 years old. In 1987, the median household income of a Harley-Davidson rider was $38,000. By 1997, the median household income for those riders had more than doubled, to $83,000. Many Harley-Davidson Clubs exist nowadays around the world, the oldest one, founded in 1928, is in Prague. Harley-Davidson attracts a loyal brand community, with licensing of the Harley-Davidson logo accounting for almost 5 percent of the company's net revenue ($41 million in 2004). Harley-Davidson supplies many American police forces with their motorcycle fleets. From its founding,