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Shifter (bicycle Part)
A bicycle shifter or gear control or gear levers is a component used to control the Bicycle gearing, gearing mechanisms and select the desired gear ratio. Typically, they operate either a Derailleur gears, derailleur mechanism or an internal hub gear mechanism. In either case, the control is operated by moving a Bowden cable, cable that connects the shifter to the gear mechanism. Location Traditionally shifters were mounted on the down tube of the frame or Stem (bicycle part), stem. For ergonomic reasons, they tend to be located somewhere on the Bicycle handlebar, handlebars on modern bicycles. Mechanisms There are various types of shifter: * Grip shifter - a wheel with click stops surrounding the handlebar is turned until the desired gear is reached, though typically one gear at a time * Trigger shifter - a lever is pulled or pushed to change gears one at a time * Thumb shifter * Road bike shifter - integrated with brake levers, sometimes known as a "brifter". In 1990, Shi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Down Tube
A bicycle frame is the main component of a bicycle, onto which wheels and other components are fitted. The modern and most common frame design for an upright bicycle is based on the safety bicycle, and consists of two triangles: a main triangle and a paired rear triangle. This is known as the ''diamond frame''. Frames are required to be strong, stiff and light, which they do by combining different materials and shapes. A frameset consists of the frame and fork of a bicycle and sometimes includes the headset and seat post. Frame builders will often produce the frame and fork together as a paired set. Variations Besides the ubiquitous diamond frame, many different frame types have been developed for the bicycle, several of which are still in common use today. Diamond In the diamond frame, the main "triangle" is not actually a triangle because it consists of four tubes: the head tube, top tube, down tube and seat tube. The rear triangle consists of the seat tube joined by p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronic Gear-shifting System
An electronic gear-shifting system is a method of changing gears on a bicycle, which enables riders to shift with electronic switches instead of using conventional shifter (bicycle part), control levers and mechanical cables. The switches are connected by wire or wirelessly to a battery pack and to a small electric motor that drives the derailleur gears, derailleur, switching the Bicycle chain, chain from Cogset, cog to cog. An electronic system can switch gears faster and, because the system does not use Bowden cables and can calibrate itself, it may require less maintenance. History In 1990, the Japanese bike component manufacturer SunTour introduced the Browning Electronic AccuShift Transmission (''SunTour BEAST'') - a triple crankset/chainset system for mountain bikes in which one quarter of the circle is hinged along a radius. During shifting, this segment is pushed sideways by a relay operated mechanism like a railroad switch and picks up the chain that is currently ru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SRAM Double Tap
SRAM Double Tap is an integrated Shifter (bicycle part), gearshift and Bicycle brake#Brake levers, brake lever system designed by SRAM Corporation for racing bicycles. It allows shifting gears without having to remove a hand from the bars, unlike previous down tube shifting systems. It was launched in late 2005 to compete with Shimano Total Integration and Campagnolo ErgoPower. It is characterized by having a single shift lever per unit that the rider moves inward a short distance for upshifts and a longer distance for downshifts. It is lighter and smaller than competitors because it has few parts. In 2010 SRAM expanded the Double Tap technology from the original Bicycle handlebar#Drop, drop handlebars to Bicycle handlebar#Flat or Riser, flat handlebars on flat bar road bikes. References External links manufacturers web site {{DEFAULTSORT:Shifter (Bicycle Part) Bicycle parts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Campagnolo ErgoPower
Campagnolo ErgoPower is an integrated gearshift and brake lever system designed by Campagnolo for racing bicycles. It allows shifting gears without having to remove a hand from the bars, unlike previous down tube shifting systems. It was launched in 1992 to compete with Shimano Total Integration (STI). It is characterized by having three separate levers per unit: one each for braking, upshifts, and downshifts. Ergopower levers may be disassembled for servicing. Details ErgoPower levers contain the mechanism inside the main body of the unit, rather than in the top of the brake levers as STI does, and there is no sideways action on the brake lever. Instead, the "flipper" that changes to a smaller cog on STI levers changes to a larger cog, and there is a small lever (sometimes called a 'mouse ear') on the inside of the brake hood body that shifts to a smaller cog. See also *Shimano Total Integration *SRAM Double Tap SRAM Double Tap is an integrated Shifter (bicycle part), gea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shimano Total Integration
Shimano Total Integration (STI) is a gearshift system designed by Shimano for racing bicycles. It combines the braking and gear shifting controls into the same component. This allows shifting gears without having to remove a hand from the bars, unlike previous down tube shifting systems. This component is usually referred to as a " shifter" or "dual-control levers", or occasionally "brifters". In late 1989, Shimano introduced their "Rapidfire" shifting for mountain bikes. This brought indexed shifting to the handlebars - something previously only available on downtube shifters or thumb shifters. This mechanism operates like a ratchet, the larger lever applying tension to the gear cable, the smaller one incrementally releasing it. The Rapidfire mechanism was subsequently adapted to be used in STI levers. In 1990, Shimano introduced their STI shifting levers for road bicycles, which completely integrated the brake lever and shifter. It also redesigned the brake "hoods" where ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shimano Ultegra Brifter
, originally and later , is a Japanese multinational manufacturing company for cycling components, fishing tackle and rowing equipment, which also produced golf supplies until 2005 and snowboarding gear until 2008. Named after founder Shozaburo Shimano (, 1894–1958) and headquartered in Sakai, Osaka Prefecture, the company has 32 consolidated and 11 unconsolidated subsidiaries, with the primary manufacturing plants based in Kunshan (China), Malaysia and Singapore. In 2017, Shimano had net sales of US $3.2 billion, 38% in Europe, 35% in Asia, and 11% in North America. Bicycle components represented 80%, fishing tackle 19%, and other products 0.1%. The company is publicly traded, with 93 million shares of common stock outstanding. They are also the official neutral support for most of the UCI World Tour. Cycling Shimano sales constitute an estimated 85% of the global bicycle component market by value. Its products include drivetrain, brake, wheel, and pedal components fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bicycle Handlebar
A bicycle handlebar is the steering control for bicycles. It is the equivalent of a tiller for vehicles and vessels, as it is most often directly mechanically linked to a pivoting front wheel via a Stem (bike), stem which in turn attaches it to the Bicycle fork, fork. Besides steering, handlebars also often support a portion of the rider's weight, depending on their riding position, and provide a convenient mounting place for Bicycle brake, brake levers, Shifter (bicycle part), shift levers, cyclocomputers, Bicycle bell, bells, etc. History The dandy horse, or draisienne, invented by Karl Drais and the first vehicle with two wheels arranged in tandem, was controlled by a bar connected to the front steering mechanism and held by the riders' two hands. The first handlebars were solid bars of steel or wood, depending on the manufacturer. Curved, moustache-shaped, drop handlebars became popular in the 1920s. Whatton bars were developed in attempt to improve the safety of penny-farth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stem (bicycle Part)
The stem is the component on a bicycle that connects the handlebars to the steerer tube of the bicycle fork. Sometimes called a ''goose neck'', a stem's design belongs to either a ''quill'' or ''threadless'' system, and each system is compatible with respective headset and fork designs: * Quill: the stem inserts into the steerer tube, which is threaded and does not extend above the headset. * Threadless: the stem clamps around the steerer tube, which is not threaded and extends above the headset. Quill versus threadless Although stems are commonly referred to as being of either the quill or threaded type, the thread in question is the one on the fork steerer tube. Quill stems require a steerer tube of the same length as the headset and head tube combined and thus must be matched to the specific bicycle model. Threadless systems use an unthreaded steerer tube, which extends into the stem and may be cut to length as desired in order to accommodate the height of the headset, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bicycle
A bicycle, also called a pedal cycle, bike, push-bike or cycle, is a human-powered transport, human-powered or motorized bicycle, motor-assisted, bicycle pedal, pedal-driven, single-track vehicle, with two bicycle wheel, wheels attached to a bicycle frame, frame, one behind the other. A is called a cyclist, or bicyclist. Bicycles were introduced in the 19th century in Europe. By the early 21st century there were more than 1 billion bicycles. There are many more bicycles than cars. Bicycles are the principal Mode of transport, means of transport in many regions. They also provide a popular form of recreation, and have been adapted for use as Toy, children's toys. Bicycles are used for Physical fitness, fitness, Military bicycle, military and Police bicycle, police applications, Bicycle messenger, courier services, Cycle sport, bicycle racing, and artistic cycling. The basic shape and configuration of a typical Safety bicycle, upright or "safety" bicycle, has changed lit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shimano 105 Sis Downtube Shifters
, originally and later , is a Japanese multinational manufacturing company for cycling components, fishing tackle and rowing equipment, which also produced golf supplies until 2005 and snowboarding gear until 2008. Named after founder Shozaburo Shimano (, 1894–1958) and headquartered in Sakai, Osaka Prefecture, the company has 32 consolidated and 11 unconsolidated subsidiaries, with the primary manufacturing plants based in Kunshan (China), Malaysia and Singapore. In 2017, Shimano had net sales of US $3.2 billion, 38% in Europe, 35% in Asia, and 11% in North America. Bicycle components represented 80%, fishing tackle 19%, and other products 0.1%. The company is publicly traded, with 93 million shares of common stock outstanding. They are also the official neutral support for most of the UCI World Tour. Cycling Shimano sales constitute an estimated 85% of the global bicycle component market by value. Its products include drivetrain, brake, wheel, and pedal components fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
