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The track bike is a racing bike that is used on tracks this bike has the fixed pinion.
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Karl Freiherr von Drais, invention the first two-wheeled vehicle I called "walking vehicle" was a trolley with one wheel in front and another behind
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The first bycicle well done have been built by Kirkpatrick MacMillan in 1839.
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Created in France by James Starley, the high wheel bicycle had the front wheel three times larger than the rear wheel.
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The 21st century can see a continued application of technology to bicycles: in designing them, building them, and using them. Bicycle components continue to get lighter and more aerodynamic.To make this the use of computers.
