The Joerns Motor Manufacturing Company located in St. Paul, Minnesota, was the builder of the 'Cyclone' motorcycle between 1912 and 1917.
Although the Cyclone had a short-lived history, the motorcycle did receive notoriety on the board-track and dirt-track racing circuit. In 1914, a Cyclone broke the one-mile speed record perviously held by Excelsior, coming in at just over 35 seconds. Over the next few years the Cyclone won several races, earning it the nickname of the "speed demon."
1914 Cyclone 'hybrid' SOHC Racer
The Cyclone 1000's 61ci (996cc) 45 degree V-Twin SOHC engine was designed by an engineer named Andrew Strand, who worked for the Jackson Automobile Company in Detroit (Jackson Auto's car placed 10th in the 1911 Indianapolis 500).
The Cyclone engine's overhead-cams were driven by a unique vertical shaft with beveled-gear ends, and the cylinder-head had a hemispherical (hemi) combustion chamber. The Cyclone engine produced 45 horsepower, and was capable of a 110 mph top speed. Joerns Motor Co. sold the original Cyclone for $350.00.
Cyclone 996cc 45 degree V-Twin SOHC engine
Cyclones were typically finished in Joerns' signature canary-yellow color, as shown in the photos above. The Cyclone's end came in 1917, when the Joerns Motor Co. determined that they could not compete with lower cost compitition.
Vintage Cyclone Motorcycle Links
Pioneers of American Motorcycle Racing - Cyclone
Viking Chapter of the Antique Motorcycle Club of America
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