The Track bicycle is a vehicle with 'bi' wheels (two) of equal diameter. The front wheel is steerable, and the rear wheel is driven through a system consisting of pedals and a chain. A track bicycle is a cycling machine without brakes and freewheels. These bicycles have resulted from advance physics and mechanical concepts. Due to its unique designing and enhanced performance, the rider uses the gears for controlling speed as there are no brakes. The bike frames are made from ultra-light carbon fibre or titanium, with a single fixed-gear with no breaks. However, aluminium and steel frames are a much cheaper alternative. International track meets such as the Olympics, and World Championships are governed by the Union Cycliste Internationale (UCI).
During the 19th century, the cycles had hard rubber tires and brakes. To increase the speed, the larger wheels of almost 60 inches in diameter were invented. These cycles led to many accidents and thus paved the path for developing the bicycle with an equal-sized wheel known as the "safety". By 1889, the invention and development of the pneumatic tire took place. In the pre-war era, bicycles had more relaxed frame geometry than the current ones. They had tight quarters, a long wheelbase, and lightweight butted tubing.
By 1937, the wood wheel rims were transformed into aluminium rims. In 1949, cable-operated parallelogram rear derailleurs (commonly known as gears) were developed. By 1964, the cable-operated gears were evolved to slant-parallelogram rear derailleur to keep a more constant distance from the dissimilar sized sprockets, consequential in easier shifting. It was the year 1985 that brought a compatible system of shift levers, derailleur, sprockets (cogs), chain, chainrings, shift cable, and shift housing. Presently, the bikes have evolved substantially. Three major types of bikes have advanced physics, higher mechanism, and infused with intricate aerodynamics technicalities.
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