domingo, 2 de agosto de 2009

A General View About The Bicycle

A bicycle, pushbike, or bike is a pedal-driven land vehicles two wheels on the frame, one after another. They were first in the 19th Century in Europe, and rapidly developed into well-known, the current design. Numbering over 1000000000 in today's world, round the head of transport, in many regions, as well as popular forms of recreation in others. The wheel is one of the most important inventions of mankind. However, there are many uncertainties regarding when and who invented the first round. According to general belief, the earliest bicycle was a wooden contraption koloběžce names like "celerifere" and was adopted by Comte de Medea Sivrac from France around 1790.

Summary of round --

The basic shape and configuration of the frame, wheels, pedals, saddle and handlebars on a bicycle almost changed from the first chain-driven model that was developed in about 1885, but many important detail improvements have been made, mainly because of the recent use of modern materials and computer-aided-design . For example, the traditional design of the saddle or seat on the bike remained more or less the same. Although there have been experiments with noseless seats, people still prefer the traditional size.

Lights are another important factor is to continue to ignore the wheel. Even if you do not have to use a bicycle after dark, you will have a precautionary lighting. Lighting on the bike is in relation to others and themselves visible for the other two, which help in the prevention of possible accidents in the dark.

As far as the images are used different materials. Carbon, aluminum and magnesium are frames which are very popular. It also supports the titanium frame, but are still expensive, are limited to cream.

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