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2. 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 ...

3. Bicycle drivetrain systems - Wikipedia

   en.wikipedia.org/wiki/Bicycle_drivetrain_systems

   1888 Geared Facile Bicycle in the Coventry Transport Museum A chain-drive and rear gear hub A bicycle gearbox with chain tensioner A penny-farthing with direct-drive. A cyclist's legs produce power optimally within a narrow pedalling speed range. Gearing is optimized to use this narrow range as best as possible.

4. List of bicycle parts - Wikipedia

   en.wikipedia.org/wiki/List_of_bicycle_parts

   Fork crown: the point at which the two blades of the fork meet below the steerer tube. Fork end: paired slots on a fork or frame at which the axle of the wheel is attached. See also Dropout; Frame: the mechanical core of a bicycle, the frame provides points of attachment for the various components that make up the machine. The term is variously ...

5. NuVinci continuously variable transmission - Wikipedia

   en.wikipedia.org/wiki/NuVinci_Continuously...

   The 3.6 kg (8 lb) NuVinci rear hub. Comparatively, the newer NuVinci hubs from around 2010 [citation needed] weighs 2.4 kg (5.4 lb) The NuVinci CVT may be applicable to many different products using a mechanical power transmission. The only application currently commercialized is the internally geared bicycle hub.

6. Bicycle gearing - Wikipedia

   en.wikipedia.org/wiki/Bicycle_gearing

   Single-speed mountain bike. A single-speed bicycle is a type of bicycle with a single gear ratio and a freewheel mechanism. These bicycles are without derailleur gears, hub gearing or other methods for varying the gear ratio of the bicycle. Adult single-speed bicycles typically have a gear ratio of between 55 and 75 gear inches, depending on ...

7. The 15 best subscription gifts of 2024, no shipping required

   www.aol.com/lifestyle/best-subscription-gifts...

   Red Wings soar past Jets 4-2 for fourth straight win. Weather. Weather. Fox Weather. See the problems freezing rain caused in the Plains. Weather. Associated Press.