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Westwood rims features a wide single-wall cross section, the inside circumference of the rim has a contoured section shape to aid with strength. Today Westwood profile rims found in the West are mostly used in drum brake system roadsters and, to a lesser degree, in bicycles with coaster brake systems.
Brake: devices used to stop or slow down a bicycle. Rim brakes and disc brakes are operated by brake levers, which are mounted on the handlebars. Band brake is an alternative to rim brakes but can only be installed at the rear wheel. Coaster brakes are operated by pedaling backward; Brake lever: a lever for actuating a bicycle brake
Most grey molybdenum disulphide greases work well in a coaster brake, with its metal-to-metal friction surfaces. Coaster-brake bicycles are generally equipped with a single cog and chain wheel and often use an 3.2-millimeter (1 ⁄ 8 in) wide chain. However, there have been several models of coaster brake hubs with derailleurs, such as the ...
The Raleigh "Twenty" was originally fitted with 20" × 1-3/8" wheels and tyres (ISO 35-451), but most export versions were sold with 20" × 1.75" wheels and tyres (ISO 47-406) – the same as BMX bicycles. Many were sold as either single speed with coaster brake or fitted with a Sturmey-Archer AW three-speed hub. The New-Zealand-manufactured ...
A bicycle wheel is a wheel, most commonly a wire wheel, designed for a bicycle. A pair is often called a wheelset, especially in the context of ready built "off the shelf" performance-oriented wheels. Bicycle wheels are typically designed to fit into the frame and fork via dropouts, and hold bicycle tires.
By 1899 there was widespread adoption in UK bicycle manufacture of the freewheel, usually combined with the back-pedal brake, and conversions were offered to existing bicycles. [8] [9] In 1899 the same system in the USA was known as the “coaster brake”, which let riders brake by pedaling backwards and included the freewheel mechanism. [10]