Whizzer Pacemaker 138 cc (1949). Museum Moto Bassella, Catalonia, Spain.

Whizzer bicycle engines are a line of bicycle engines that were produced in the USA from 1939 to 1965. They were commonly sold as kits to be assembled and attached to a consumer’s bicycle thus creating a motorized bicycle.

Whizzer U.S.A. re-appeared in 1997 to sell an improved version, pre-assembled on an old Schwinn-style bicycle frame.

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