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Since the 1980s, bicycles have adopted standard axle spacing: the hubs of front wheels are generally 100 mm wide fork spacing, road wheels with freehubs generally have a 130 mm wide rear wheel hub. Mountain bikes have adopted a 135 mm rear hub width, [4] which allows clearance to mount a brake disc on the hub or to decrease the wheel dish for a ...
DK Bicycles introduced the Dual Drive hub back in the early 2000s which is a BMX Left/Right drive flip flop hub with the smaller sized metric (30 mm x 1 mm) BMX threads for 13T-15T freewheels, but also includes two threaded adapters, one left and one right, threaded inside to match the smaller metric threads and threaded on the outside with ...
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
Sturmey-Archer AW 3-speed hub. 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 ...
Animation of a single pivot side-pull caliper brake for the rear wheel of a steel framed road bike. A bicycle brake reduces the speed of a bicycle or prevents the wheels from moving. The two main types are: rim brakes and disc brakes. Drum brakes are less common on bicycles.
The BXR bike (a.k.a. Bicycle Crossroadster) or Sport Touring BMX. features an lightweight BMX bike-sized (20-inch/406 mm rims) wheels or (22-inch/451 mm rims) wheels; Built-in frames, usually from the BMX racing, minivelos or foldable city/touring bikes.