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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 ...
For a time 10 mm pitch chains, sprockets, and chainrings were used for motor-paced racing, to reduce the size and weight of the transmission system. "Shimano Nexus" Shimano's family of internally geared hubs. Available in 3-, 7- and 8-speed with or without a coaster brake. The Nexus hubs are comparable in range to a full 16–20-speed system.
The history of cycling infrastructure starts from shortly after the bike boom of the 1880s when the first short stretches of dedicated bicycle infrastructure were built, through to the rise of the automobile from the mid-20th century onwards and the concomitant decline of cycling as a means of transport, to cycling's comeback from the 1970s onwards.
In Austria, a moped is defined as a motorized bicycle with at most 50 cc (3.1 cu in) and a maximum speed of 45 km/h (28 mph), which is close to the speed limit within towns (50 km/h (31 mph)). Since September 2009, drivers of mopeds have to be at least 15 years of age and in possession of a moped pass or a regular driver's license.
Independent Fabrication (IF) is a bicycle company located in Lynn, Massachusetts, USA.IF fabricates bicycle frames from steel, titanium and carbon fiber.Independent Fabrication has twice won the Bicycling Magazine "Dream Bike of the Year" with its carbon-tubed, titanium-lugged XS road frame. [1]
Bicycles became common in Copenhagen at the beginning of the twentieth century. The city's first bicycle path was established on Esplanaden in 1892, [8] another early example are the paths established around The Lakes in 1910, when the existing bridle paths were converted into isolated cycleways to accommodate the heavy growth in cycling at the time. [9]
Timeline of pre–United States history; Timeline of the history of the United States (1760–1789) Timeline of the history of the United States (1790–1819) Timeline of the history of the United States (1820–1859) Timeline of the history of the United States (1860–1899) Timeline of the history of the United States (1900–1929)
The modern bicycle was designed by the English engineer Harry John Lawson in 1876, although it was John Kemp Starley who produced the first commercially successful safety bicycle a few years later. [57] Its popularity soon grew, causing the bike boom of the 1890s.