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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.
A motorized bicycle is a bicycle with an motor or engine and transmission used either to power the vehicle unassisted, or to assist with pedalling. Since it sometimes retains both pedals and a discrete connected drive for rider-powered propulsion, the motorized bicycle is in technical terms a true bicycle, albeit a power-assisted one.
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.
What could be argued is that the Genesis concept (not just the inclination of the engine, although on the FZ750 was a radical 45 degrees, on the FZR1000 a less radical 35 degrees, a feature now generally universally used in the modern (post 1990) sport bike thus allowing downdraft air induction and airbox pressurization, but also the use of ...
RC= Honda's traditional racing prefix for 4-stroke bikes; 213= third works bike of the 21st century; V= V engine; A limited-production run of a hand-built, road-going version designated RC213V-S was introduced in 2015 as a MotoGP replica. [2] [3] Honda merchandised a Sports Kit upgrade package to allow owners to improve the specification for ...
The idea for the engine was rejected by BSA, but adopted by Ariel. Thus it became the Ariel Square Four. In 1966 Phil Vincent wrote in Motor Cycle: "Alas, in 1959 the Square Four went out of production, a victim of the modern trend towards small, high-revving modern power units. The demand had tailed off a bit, and with reduced output, the ...