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By the 1980s, aluminum welding techniques had improved to the point that aluminum tube could safely be used in place of steel. The head tube contains the headset, the set of bearings that allows the fork to turn smoothly for steering and balance. They are also used for entertainment and pleasure in other ways, such as in organised mass rides, artistic cycling and freestyle BMX. Bicycle sports include racing, BMX racing, track racing, criterium, roller racing, sportives and time trials. The next most numerous vehicle, the Honda Super Cub motorcycle, has more than 100 million units made, while most produced car, the Toyota Corolla, has reached 44 million and counting.

The front triangle consists of the head tube, top tube, down tube, and seat tube. Drag can also be reduced by covering the bicycle with an aerodynamic fairing. Drag can be reduced by seating the rider in a more aerodynamically streamlined position.

Off-road tires are usually between 1.5 and 2.5 inches (38 and 64 mm) wide, and have treads for gripping in muddy conditions or metal studs for ice. Saddles also vary with rider preference, from the cushioned ones favored by short-distance riders to narrower saddles which allow more room for leg swings. A higher gear allows a cyclist to make fewer pedal turns to maintain a given speed, but with more effort per turn of the pedals. They cannot be shifted across a cassette of sprockets, and are used either as single speed or with a hub gear. A dérailleur system normally has two dérailleurs, or mechs, one at the front to select the chainring and another at the back to select the sprocket. Recent versions use bamboo for the primary frame with glued metal connections and parts, priced as exotic models.

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Although, without pneumatic tires, the ride of the smaller-wheeled bicycle would be much rougher than that of the larger-wheeled variety. It featured a tubular steel frame on which were mounted wire-spoked wheels with solid rubber tires. In that same year, bicycle wheels with wire spokes were patented by Eugène Meyer of Paris. Its rider sat astride a wooden frame supported by two in-line wheels and pushed the vehicle along with his or her feet while steering the front wheel. The basic shape and configuration of a typical upright or "safety" bicycle, has changed little since the first chain-driven model was developed around 1885.

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• Early bicycles were an example of conspicuous consumption, being adopted by the fashionable elites.
• In addition, by serving as a platform for accessories, which could ultimately cost more than the bicycle itself, it paved the way for the likes of the Barbie doll.
• Since then aluminum alloy frames and other components have become popular due to their light weight, and most mid-range bikes are now principally aluminum alloy of some kind.