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Reducing the weight of the bike + rider by 1 kg would increase speed by 0.01 m/s at 9 m/s on the flat (5 seconds in a 32 km/h (20 mph), 40-kilometre (25 mile) time trial). The same reduction on a 7% grade would be worth 0.04 m/s (90 kg bike + rider) to 0.07 m/s (65 kg bike + rider).
Due to a recent rise in electric-bicycle-related accidents, caused mostly by inexperienced riders who ride on the wrong side of the road, run red lights, do not use headlights at night etc., the Chinese government plans to change the legal status of illegal bicycles so that vehicles with an unladen weight of 20 kg (44 lb) or more and a top ...
Bicycle law in the United States is the law of the United States that regulates the use of bicycles. Although bicycle law is a relatively new specialty within the law, first appearing in the late 1980s, its roots date back to the 1880s and 1890s, when cyclists were using the courts to assert a legal right to use the roads.
The price of a new bicycle can range from US$50 to more than US$20,000 (the highest priced bike in the world is the custom Madone by Damien Hirst, sold at US$500,000 [10]), [11] depending on quality, type and weight (the most exotic road bicycles can weigh as little as 3.2 kg (7 lb) [12]).
The Scalpel was a light-weight full-suspension bike designed for cross-country racing with flexible carbon-fiber chain stays instead of a pivot, providing 63 mm of rear travel and 67 mm from model year 2003 on. In 2008, Cannondale introduced an all-carbon Scalpel, and moved the rear shock to enable 100 mm travel.
The Consumer Product Safety Act defines the term low speed electric bicycle as a two- or three-wheeled vehicle with fully operable pedals and an electric motor of less than 750 watts (1 horsepower), whose maximum speed on a paved level surface, when powered solely by such a motor while ridden by an operator who weighs 170 pounds, is less than ...