1913 Sears DeLuxe Dreadnought Twin

The Sears DeLuxe Dreadnought was built to specifications and featured top quality components. Power came from a 9 horsepower inlet-over-exhaust V-Twin engine sourced from F.W. Spacke Machine Company of Indianapolis. This 70 cubic inch DeLuxe engine, shared by other manufacturers such as Dayton, Eagle, Minneapolis and Crawford carries Fred W. Spacke’s Read more

1914 Harley-Davidson Model 10-F Twin

A V-Twin with “step-starting,” chain final drive and a 2-speed hub marked a big advancement for Harley-Davidson. Harley-Davidson entered the modern era in 1914 with their first multi-speed big twin. It incorporated an in-house designed 2-speed in the rear hub, a design common in bicycles, and the ability to change gears was a huge advance Read more

1947 Harley-Davidson Knucklehead EL Sidecar Rig (Frank Webb donation)

Except for their limited production racing machines, at the beginning, Harley-Davidson built only inlet-over-exhaust and then side-valve powered motorcycles for a little over twenty years. They first experimented with overhead valve engines in smaller single-cylinder bikes like the BA; this 350cc single was popular in export markets. But in 1936 Read more

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