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Whizzer bicycle engines are a line of bicycle engines that were produced in the United States 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.
These engine kits were designed or marketed by both small and large companies, including Bike Bug, Tas Spitz, and even Sears, which sold the Free Spirit, and Little Devil engine kits. Most of these kits were designed to use lightweight, low-cost two-stroke engines from Japanese manufacturers such as Tanaka. During the late 1990s, the arrival of ...
1903 – A California motorized bicycle ridden by George Wyman became the first motor vehicle to cross the North American continent. [10]1903 – 1962 The "Shaw Manufacturing Co." of Galesburg, Kansas advertises a 241cc chain-drive engine kit (1903–1915) for motorizing a bicycle in "Popular Mechanics" magazine for $90.
1920 Coventry-Eagle with 2.75 hp JAP four-stroke engine Rider on a Coventry-Eagle in, Australia, circa 1935. The machine has a pressed steel frame; Villiers two-stroke engine; and twin exhausts. Coventry-Eagle was a British bicycle and motorcycle manufacturer.
Motorcycles with a V-twin engine mounted with its crankshaft mounted in line with the frame, e.g. the Honda CX series, are said to have "transverse" engines, [1] [2] while motorcycles with a V-twin mounted with its crankshaft mounted perpendicular to the frame, e.g. most Harley-Davidsons, are said to have "longitudinal" engines.
A race kit is available from the manufacturer that boosts power from the standard 15 bhp to 25 bhp. [ 5 ] The RS4 125 is available with a quick-shift system similar to the RSV4 , in which the engine halts the torque from the engine based on engine rpm, the amount of throttle being applied, and the speed of the bike.