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  2. Bottle dynamo - Wikipedia

    en.wikipedia.org/wiki/Bottle_dynamo

    Bottle dynamo mounted on a bicycle. Dismantled bottle dynamo. Left: Housing with internal permanent magnet rotating through the friction wheel. Right: Induction coil. A bottle dynamo or sidewall dynamo is a small electrical generator for bicycles employed to power a bicycle's lights.

  3. Bicycle lighting - Wikipedia

    en.wikipedia.org/wiki/Bicycle_lighting

    Magnetic bike lights. Lights can be self-powered via electromagnetic induction, eliminating the need for batteries or dynamo systems. The advantages are similar to those of dynamo lighting. The most common design includes a magnet on the wheel spoke and lights with a coil in them, mounted on the frame or fork of the bike.

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

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

    This versatile bike delivers a premium indoor cycling experience, boasting a sturdy frame (backed by a lifetime warranty), a heavy 28.6-pound flywheel, and 100 levels of magnetic resistance ...

  5. Hub dynamo - Wikipedia

    en.wikipedia.org/wiki/Hub_dynamo

    A hub dynamo is a small electrical generator built into the front hub of a bicycle wheel that is usually used to power lights. Often the hub "dynamo" is not actually a dynamo, which creates DC, but a low-power magneto that creates AC. Most modern hub dynamos are regulated to 3 watts at 6 volts, although some will drive up to 6 watts at 12 volts.

  6. Stationary bicycle - Wikipedia

    en.wikipedia.org/wiki/Stationary_bicycle

    Stationary bikes are also used for physical testing, i.e. as ergometers for measuring power. Traditionally this is done by imposing a certain level of resistance mechanically and/or measuring this. [5] gives a good overview. Modern ergometers and even many consumer exercise bikes are fitted with electronic sensors and displays.

  7. Bicycle - Wikipedia

    en.wikipedia.org/wiki/Bicycle

    A bicycle, also called a pedal cycle, bike, push-bike or cycle, is a human-powered or motor-assisted, pedal-driven, single-track vehicle, with two wheels attached to a frame, one behind the other. A bicycle rider is called a cyclist, or bicyclist. Bicycles were introduced in the 19th century in Europe. By the early 21st century there were more ...

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