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2. Electronic gear-shifting system - Wikipedia

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

   The first commercially successful electronic gear shift system for road bicycles was introduced by Shimano in 2009, the Di2. [3] Three professional teams used the Di2 in the 2009 Tour of California : Columbia High Road , Garmin Slipstream , and Rabobank ; [ 3 ] and several teams and riders, including George Hincapie , used it during the 2009 ...

3. Comparison of hub gears - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_hub_gears

   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) City SRAM G8: 2012 2015 8 260% 2088-2180 g [16] [17] City SRAM G9 2014 2015 9 292%

4. Shimano Nexus - Wikipedia

   en.wikipedia.org/wiki/Shimano_Nexus

   Inter 5E - A 5-speed hub targeted at the e-bike market, launched in 2019. Unrelated to the previous Inter 5 model. Unrelated to the previous Inter 5 model. Available with a conventional twist-grip for mechanical shifting (SG-C70 00 -5 X series), or with an automatic shifter (SG-C70 50 -5 X series) [ 10 ] integrated with the Shimano STEPS e-bike ...

5. Bicycle drivetrain systems - Wikipedia

   en.wikipedia.org/wiki/Bicycle_drivetrain_systems

   Bicycle drivetrain systems are used to transmit power on bicycles, tricycles, quadracycles, unicycles, or other human-powered vehicles from the riders to the drive wheels. Most also include some type of a mechanism to convert speed and torque via gear ratios .

6. Shifter (bicycle part) - Wikipedia

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

   A twist-style 14-speed indexed shifter made by Rohloff. 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 ...

7. List of bicycle parts - Wikipedia

   en.wikipedia.org/wiki/List_of_bicycle_parts

   Brake shifter or colloquially, brifter (see also Shimano Total Integration, Campagnolo ErgoPower and SRAM Double Tap): combined shifter and brake lever control Braze-on : a fitting protruding from a frame to provide attachment, typically for cable housings or tire pumps and similar accessories

8. Gear stick - Wikipedia

   en.wikipedia.org/wiki/Gear_stick

   A standard 5-speed shift pattern (on a Peugeot 206 knob). A gear stick (rarely spelled gearstick), [1] [2] gear lever (both UK English), gearshift or shifter (both U.S. English), more formally known as a transmission lever, is a metal lever attached to the transmission of an automobile.

9. Campagnolo - Wikipedia

   en.wikipedia.org/wiki/Campagnolo

   1991 8-speed shifting components are introduced 1992 The ErgoPower levers are introduced, which combines brake lever and a shift lever to answer Shimano's STI levers. 1993 Delta brakes are discontinued 1994 Campagnolo leaves the mountain bike components business 1995 Group names on components are introduced 1997 9-speed shifting components are ...