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 Street Harley-Davidson Street The Harley-Davidson Street motorcycle series was announced by Harley-Davidson at the 2013 EICMA show in Milan for 2014 introduction. It will comprise Harley's first all-new models in 13 years, and Harley's first lightweight motorcycle since the 1974 Sprint. The 750 is powered by a 749 cc displacement version of Harley's 60° SOHC V-twin, water-cooled Revolution engine dubbed the Revolution X. The Street 500 has a 494 cc narrower-bore but otherwise identical engine. Production for sale in the United States and Canada is done at Harley's Kansas City facility; production for the rest of the world, including engines, is