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2. Bicycle drivetrain systems - Wikipedia

   en.wikipedia.org/wiki/Bicycle_drivetrain_systems

   Major changes in bicycle form have often been initiated or accompanied by advances in drivetrain systems. Several early drivetrains used straight-cut gears that meshed directly with each other outside of the hub. [1] [2] Some bicycles have used a double-sided rear wheel, with different-sized sprockets on each side. To change gears, the rider ...

3. Wheel hub motor - Wikipedia

   en.wikipedia.org/wiki/Wheel_hub_motor

   Raleigh SC30 converted to an electric bicycle with an aftermarket electric conversion hub motor kit. A wheel hub motor, hub motor, or in-wheel motor is a motor that is incorporated into the hub of the wheel. Wheel-hub motors are commonly found on electric bicycles.

4. Suzuki reaction - Wikipedia

   en.wikipedia.org/wiki/Suzuki_reaction

   The Suzuki reaction or Suzuki coupling is an organic reaction that uses a palladium complex catalyst to cross-couple a boronic acid to an organohalide. [1] [2] [3] It was first published in 1979 by Akira Suzuki, and he shared the 2010 Nobel Prize in Chemistry with Richard F. Heck and Ei-ichi Negishi for their contribution to the discovery and development of noble metal catalysis in organic ...

5. List of bicycle parts - Wikipedia

   en.wikipedia.org/wiki/List_of_bicycle_parts

   Skirt guard or coatguard: a device fitted over the rear wheel of a bicycle to prevent a long skirt, coat or other trailing clothes or luggage from catching in the wheel, or in the gap between the rim and the brakes; Spindle: an axle around which a pedal rotates; threaded at one end to screw into crank arms; Spoke: connects wheel rim to hub ...

6. Electric bicycle - Wikipedia

   en.wikipedia.org/wiki/Electric_bicycle

   With a front-drive the motor sits in the front hub, and with a rear-drive the motor sits in the rear hub. [ citation needed ] Hub motors were common in 19th century electric bicycle designs but fell out of favor until their resurgence in the 2000s.

7. Electric vehicle conversion - Wikipedia

   en.wikipedia.org/wiki/Electric_vehicle_conversion

   A bicycle with an aftermarket hub-motor in the front wheel. An electric bicycle is a conventional bicycle that has been fitted with an electric motor. Most often electric bicycles or e-bikes are powered by rechargeable batteries however some experimental electric bicycles run directly on or recharge their batteries via solar panels, fuel cells ...