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2. Electric bicycle - Wikipedia

   en.wikipedia.org/wiki/Electric_bicycle

   E-bikes have reached a market share of 10% by 2009, as e-bikes sales quadrupled from 40,000 units to 153,000 between 2006 and 2009, [80] and the electric-powered models represented 25% of the total bicycle sales revenue in that year. [79]

3. Motorized bicycle - Wikipedia

   en.wikipedia.org/wiki/Motorized_bicycle

   Motorized bicycle. A motorized bicycle is a bicycle with an attached 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 ...

4. Whizzer (motorcycles) - Wikipedia

   en.wikipedia.org/wiki/Whizzer_(motorcycles)

   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.

5. Bicycle performance - Wikipedia

   en.wikipedia.org/wiki/Bicycle_performance

   Bicycle performance is measurable performance such as energy efficiency that affect how effective a bicycle is. Bicycles are extraordinarily efficient machines; in terms of the amount of energy a person must expend to travel a given distance, cycling is calculated to be the most efficient self-powered means of transportation. [1] The transport ...

6. List of bicycle types - Wikipedia

   en.wikipedia.org/wiki/List_of_bicycle_types

   A bamboo bicycle has a frame made of bamboo. A cardboard bicycle is made of cardboard. A lugged steel bicycle has a frame made of steel. A plastic bicycle was an attempt in the early 1980s to introduce a bicycle made entirely out of plastic materials instead of metal. A wooden bicycle has a frame made out of wood.

7. List of cycling records - Wikipedia

   en.wikipedia.org/wiki/List_of_cycling_records

   Allan Abbott, a cycling enthusiast and motorcycle racer, elevated the motor-paced bicycle speed record at the Bonneville Salt Flats, reaching 223 km/h (139 mph) in 1973. John Howard, Olympic cyclist and Ironman triathlon winner, reset the record to 244 km/h (152 mph), also at the Bonneville Salt Flats, on 20 July 1985.