Created page with "Side-valve singles and V-twins were the basis of Harley-Davidson's engineering policy from the late 1920s to the late 1930s. A major consideration was that arch-rival [[I..."
(Created page with "Side-valve singles and V-twins were the basis of Harley-Davidson's engineering policy from the late 1920s to the late 1930s. A major consideration was that arch-rival [[I...")