The bicycle, an apparently simple that we all know, is made up of different elements.
The carrier is bike frame, which can be described as the supporting element on which all other components are placed. The frame is made from steel tubes, whose dimensions vary depending on the type of bike, arranged as a kind of harness. The top tube connects the steering to the saddle, the tube is placed under the direction of the steering wheel, and is connected to the hub of the cranks through the inclined tube. Finally, the seat tube, that it is easy to understand, is that where you position the saddle. The frame are generally applied two forks in the back and one in front. Certain types of bikes, especially mountain bikes have suspension forks , which promote the absorption of bumps.
are steering the front fork and handlebars, which allow you to change the direction of the front wheel thus determining the direction and allowing you to run curves. The front fork holds the front wheel, as well as the back of the frame holding the rear wheel and, of course, the saddle. The wheels, for some 'time of equal size, are covered with tires, which may be of different types: low pressure or normal, race and so on. The spokes of the wheels are steel wires attached to the rim, which is mounted on the tire, which contains the tube fitted with a valve.
A complete complete groups of bicycle accessories, pedals, which are sets of pedals, chain and drive wheel, which has the function of transmitting the movement of the chain, which in turn forward it to the rear wheel , and the braking system, which can be jaw or fork. Of course, a bicycle can also be equipped with lighting system, which includes a light electric dynamo in the front and a device to red light reflected in the rear and, at the discretion the owner of the bicycle, mirrors, fenders, chain guard and other accessories.
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