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Cyclocross brake levers are sized to fit drop style bars, and would also not fit a mountain bike handlebar. The other common lever/grip size is used for mountain and city handlebars, including flat bars, riser bars, some porteur bars, etc. On these bars the lever and grip areas have a 22.2 mm (7 ⁄ 8 in) diameter. Hence, thumb shift levers ...
The ISO standard for the clamping area of a handlebar is 25.4 mm (1 inch), which is used on mountain bikes and many Japanese-made road handlebars. However, the Italian unofficial standard is 26.0 mm, which is the most common clamp size for road bars.
Bicycle racers seeking the greatest saddle-to-handlebar drop for better aerodynamics will often forego spacers and cut the steerer tube down to exactly match the headset bearing cup stack height plus the stem height. Cutting the steerer tube to its minimum length prevents switching to a taller stem or to a headset cups with a higher stack height.
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 ...
The mountain bike's sturdy frame and load-carrying ability gave it additional versatility as a utility bike, usurping the role previously filled by the roadster. By 1990, the roadster was almost dead; while annual U.K. bicycle sales reached an all-time record of 2.8 million, almost all of them were mountain and road/sport models.
Carbon footprints are usually reported in tonnes of emissions (CO 2-equivalent) per unit of comparison. Such units can be for example tonnes CO 2-eq per year, per kilogram of protein for consumption, per kilometer travelled, per piece of clothing and so forth. A product's carbon footprint includes the emissions for the entire life cycle.
A carbon nanotube (CNT) is a tube made of carbon with a diameter in the nanometre range . They are one of the allotropes of carbon. Two broad classes of carbon nanotubes are recognized: Single-walled carbon nanotubes (SWCNTs) have diameters around 0.5–2.0 nanometres, about 100,000
This is an accepted version of this page This is the latest accepted revision, reviewed on 3 January 2025. American ridesharing and delivery company For other uses, see Über and Uber (disambiguation). Uber Technologies, Inc. Headquarters in Mission Bay, San Francisco Formerly Ubercab (2009–2011) Company type Public Traded as NYSE: UBER DJTA component S&P 500 component Industry ...