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  2. The best stationary bikes for seniors in 2025 - AOL

    www.aol.com/lifestyle/best-stationary-bikes...

    Staying active is crucial for seniors' health and well-being, but traditional forms of exercise can become challenging with age. Outdoor cycling, for instance, might lose its appeal due to ...

  3. Derailleur - Wikipedia

    en.wikipedia.org/wiki/Derailleur

    The cable is often routed across the top or along the bottom of the bottom bracket shell on a cable guide, which redirects the cable up the lower edge of the frame's down tube. Full-suspension mountain bikes often have bottom pull routing as the rear suspension prevents routing via the top tube.

  4. 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 .

  5. Electronic gear-shifting system - Wikipedia

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

    On traditional bikes, the front derailleur is problematic because the chain can be under tension and has to make a large vertical jump between chainrings. The electronic system's controlled motion overcomes these problems. The Di2 can also trim the front derailleur to eliminate chain rub and calibrate itself to adjust for wear and tear. [16]

  6. Bicycle and motorcycle dynamics - Wikipedia

    en.wikipedia.org/wiki/Bicycle_and_motorcycle...

    Bicycle and motorcycle dynamics is the science of the motion of bicycles and motorcycles and their components, due to the forces acting on them. Dynamics falls under a branch of physics known as classical mechanics. Bike motions of interest include balancing, steering, braking, accelerating, suspension activation, and vibration. The study of ...

  7. Bicycle gearing - Wikipedia

    en.wikipedia.org/wiki/Bicycle_gearing

    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 the rider and the anticipated ...

  8. Bicycle brake - Wikipedia

    en.wikipedia.org/wiki/Bicycle_brake

    The cable housing attaches to a fixed cable stop attached to the frame, and the inner cable bolts to a sliding piece (called a "braking delta", "braking triangle", or "yoke") or a small pulley, over which runs a straddle cable connecting the two brake arms. Tension on the cable is evenly distributed to the two arms, preventing the brake from ...

  9. List of bicycle types - Wikipedia

    en.wikipedia.org/wiki/List_of_bicycle_types

    Trials bicycles designed for trials riding, often without regard for attaching a seat. [7] Exercise bikes, spinning bikes, or exercycles are devices used as exercise equipment for indoor cycling. It includes a saddle, pedals, and some form of handlebars arranged as on a (stationary) bicycle.