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History Of Bike Essay

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Chapter-1 Introduction ________________________________________ 1.1 HISTORY OF BICYCLE A bicycle, often called a bike or cycle, is a human-powered, pedal-driven, single-track vehicle, having 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 and, as of 2003, more than a billion have been produced worldwide, twice as many as the number of automobiles that have been produced. They are the principal means of transportation in many regions. They also provide a popular form of recreation, and have been adapted for use as children's toys, general fitness, military and police applications, courier …show more content…

Sometimes, a single idler gear is used to reverse the direction, in which case it may be referred to as a reverse idler. In our system we are going to use the compound idler gear. The input gear is connected with the crank shaft and output gear is connected with the flywheel. During forward gear the input gear is directly meshed with the output gear. If the input gear rotates in clockwise direction, the output gear will rotate in anticlockwise direction. So the vehicle moves in the forward direction. During reverse gear the idler gear is meshed in between the input and output gear. Idler gear here using is a compound gear, so smaller gear in compound gear is meshed with input gear and larger gear is meshed with output gear. When the input gear rotates in clockwise direction the idler gear rotates in anticlockwise direction. Also the output gear meshed with idler gear rotates in clockwise direction. So the vehicle moves in reverse direction. The disadvantage is that sometimes the chain gets loosened easily and need to maintain

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