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2. Bottle dynamo - Wikipedia

   en.wikipedia.org/wiki/Bottle_dynamo

   Bottle dynamos must be carefully adjusted to touch the sidewall at correct angles, height and pressure. Bottle dynamos can be knocked out of position if the bike falls, or if the mounting screws are too loose. A badly positioned bottle dynamo will make more noise and drag, slip more easily, and can in worst case fall into the spokes.

3. Electric bicycle - Wikipedia

   en.wikipedia.org/wiki/Electric_bicycle

   E-bikes are zero-emissions vehicles, as they emit no combustion by-products, but the environmental effects of electricity generation and power distribution and of manufacturing and recycling batteries [62] must be accounted for. [63] E-bikes emit similar pollutants per kilometer as buses, with emission rates several times lower than motorcycles ...

4. 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.

5. The 10 Best Cheap E-Bikes, Determined By Our Testing and ...

   www.aol.com/9-best-cheap-e-bikes-154400410.html

   The ease of use and all-around fun of e-bikes make the lower-cost models an attractive option for short trips or leisurely rides. The Best Cheap E-Bikes. Best Overall E-Bike: Aventon Level.2.

6. List of electric bicycle brands and manufacturers - Wikipedia

   en.wikipedia.org/wiki/List_of_electric_bicycle...

   This article lists notable electric bicycle brands and manufacturers including electric unicycles.. Many bicycle brands do not manufacture their own product, but rather import and re-brand bikes manufactured by others, sometimes designing the bike, specifying the equipment, and providing quality control.

7. Electric motorcycles and scooters - Wikipedia

   en.wikipedia.org/wiki/Electric_motorcycles_and...

   At between one and two cents per mile (depending on electric rates), electric machines enjoy an enormous fuel cost advantage. Three months and 2,800 km (1,700 mi) of commuting on an electric motorcycle cost Lavrinc less than $30 for electricity; on a BMW gasoline bike a single trip of 650 km (400 mi) cost nearly the same.