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2. Shimano Total Integration - Wikipedia

   en.wikipedia.org/wiki/Shimano_Total_Integration

   Shimano STI Dual Control shifter and brake lever: 1. Main lever 2. Release lever A. Pulling the main lever towards the rider applies the brake B. Pushing the main lever towards the center of the bike downshifts one, two or three gears depending on how far the lever is pushed (right hand shifter) or changes from a small chainring to a larger chainring (left hand shifter)

3. Shifter (bicycle part) - Wikipedia

   en.wikipedia.org/wiki/Shifter_(bicycle_part)

   A bicycle shifter or gear control or gear levers is a component used to control the gearing mechanisms and select the desired gear ratio. Typically, they operate either a derailleur mechanism or an internal hub gear mechanism. In either case, the control is operated by moving a cable that connects the shifter to the gear mechanism.

4. List of bicycle parts - Wikipedia

   en.wikipedia.org/wiki/List_of_bicycle_parts

   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

5. Bicycle brake - Wikipedia

   en.wikipedia.org/wiki/Bicycle_brake

   Squeezing the brake lever tightens the cable against the channel to produce braking friction. [49] A return spring slackens the cable when the brake lever is released, no adjustment is required, and the brake becomes more forceful when wet. Husted said his inspiration was the band brake used on industrial machinery. [50]

6. Shimano Nexus - Wikipedia

   en.wikipedia.org/wiki/Shimano_Nexus

   Shimano Nexus Inter 8 hub excluding auxiliary components. Shimano Nexus gear shift lever. Shimano Nexus is a brand of bicycle components which includes products such as epicyclical gear hubs, cranksets, shifters, brake levers, hub brakes, hub dynamos, and a CPU for automatically changing gears.

7. Groupset - Wikipedia

   en.wikipedia.org/wiki/Groupset

   These parts typically include the following: 2 gear levers or shifters and; 2 brake levers or; 2 integrated brake levers/shifters; 2 brakes, front and rear; 2 derailleurs, front and rear; 1 bottom bracket; 1 crankset; 1 chain; 1 cogset, freewheel or cassette; With the following forming part of some groupsets: 1 headset (more commonly included ...

8. Electronic gear-shifting system - Wikipedia

   en.wikipedia.org/wiki/Electronic_gear-shifting...

   As of 2009, one system was commercially available from a major parts manufacturer: Shimano's Di2 (Dura-Ace 7970) for road bicycles. While the traditional method of gear shifting uses mechanical control levers that pull and release Bowden cables and spring-loaded derailleurs, Di2 is controlled by electronic switches located either in the ...

9. Comparison of hub gears - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_hub_gears

   Shimano Nexus Inter-7: 1995 7 244% 1465-1860 g City Shimano Nexus Inter-5E 2019 5 263% 60 Nm 1st gear 1650 g e-bike Shimano Nexus 4 Speed 4 184% 1st gear City Shimano Nexus Inter-3: 3 187% 2nd gear 1220 g City SRAM Spectro E12 (Elan) 1995 1999 12 339% 3500-4000 g City SRAM i-Motion 9: 2005 2012 9 340% 2000g (w/o brake)-2400g (with coaster brake)