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Bicycle or only cycle - the vehicle put in action by the person which is carried by pedals. It has two wheels which are attached to metal or in some cases to the firm plastic structure, one at the front and the friend in a back.
Bicycle history
The bicycle at first has been entered in Europe in 19th century. Now their number exceeds one billion all over the world. They are used as the basic way of transportation in some areas of the world, especially the Netherlands and China. They also have developed as very popular form of entertainment and rest. Other areas of human actions, that they have been accepted, are adult suitability, children ` s toys, police and military statements, sports meets of a cycle and service of the courier. Thus on a time interval the modest bicycle has accepted very many roles!
The base configuration and the form of the general bicycle has been changed a little as the first model which is carried by chains, has been developed back in 1885. However, some thin details have been made better with growing use of the computer and improvement of technology of materials. Using modern technologies have allowed to make specialised projects for various kinds and driving use on a bicycle.
Parts and Building of the Typical Bicycle
Wheels is - the most important part of any vehicle. Initial wheels used the wooden centre with a steel axis, the spokes made of wood and the iron tyre which is adapted on an outer side. The wheels used today, have metal centre, metal wire spokes, a metal frame to hold spokes and the pneumatic rubber tyre on an outer side. Other important part of a wheel - relations which free movement of the centre on an axis allows.
The structure - at the majority of the bicycles used today, is diamond structure. It ` s made of two triangles, front and back. The forward triangle has main pipe, the main pipe, a pipe of a place and downwards a pipe. The main pipe - a part containing ear-phones of the relation to allow smooth regulation, the main pipe incorporates to a place, and downwards, the pipe connects the main pipe and a basis bracket. The rear triangle has place pipe, stay of a place and the connected stay of a chain.
Transmission is consists of pedals which rotates the weapon of the odd fellow which is in turn attached to a chain wheel or chainrings which conducts a chain and forces a rear wheel to rotate.
Being fixed and Keeping - regulation is made by possible use of wheels which twists a forward wheel. To be fixed there are saddles at structure top. Placing can be developed for comfort or make driving on a bicycle more smooth and faster.
Brakes - the brakes used in modern bicycles, are or brakes of a frame, which uses keyboards to compress a wheel from 2 parties and a stop of it, internal brakes of the centre which has keyboards in the centres or disk brakes. Braking in bicycles operate a hand, pressing the brake levers established on wheels from both parties.
The suspension is - the system included to make experience going by a bicycle by more smooth.
Accessories - parts as wings to avoid splashes from pools, security guards of a chain to rescue clothes from oils, the kick maintains to hold, a bicycle vertically while is left became constant features of a bicycle. Other accessories as forward baskets, rear racks, a place for the main lamp, the pump, helmets, the tooling and t.d also is accessible according to the ordered.
Use and development of bicycles have mentioned mankind in the big way, than it seems. It has mentioned history both in industrial and in cultural kingdoms. In initial years, bicycles and its building depended on technology which existed; later, its technology has in turn given further idea in various areas. |
