Roper steam velocipede
An early steam-powered bicycle built by American inventor Sylvester Roper in the 19th century.
Last updated August 25, 2026
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Overview
The Roper steam velocipede was one of the earliest steam-powered vehicles built by Sylvester Roper in the 19th century, considered a pioneer in the development of motorcycles and automobiles. It combined a bicycle frame with a steam engine, demonstrating the application of steam power to personal transportation.
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