Mountain bike

History of the mountain bike

The bicycle from mountain is born in California in the United States towards the end of years 70. To the beginning the MTB were not other that sturdy modified bicycles so as to to be able sopportare the sollicitations of excursions cross-country vehicle, and probably were used from groups hippies in try of incontaminati spaces. The first serious development to the MTB was given from Gary Fisher and Joe Breeze that modified geometry of the chassis, rendered it lighter and introduced a change of specific speed. The phenomenon mountain bike spreaded in all the later United States and (in years 80) in Europe. In Italy, when much snobbavano the MTB, the Cinelli company, with good intuition, launch on the market the Rampichino model. From then (1985) until the end of the century the MTB sales they increased to the point to exceed the quota two thirds party of the market. The culture of the mountain bike and its gets passionate to you has been developed around to values like the love for the nature and incontaminati atmospheres but also the strong emotions. Today the mountain bike they come constructed in most numerous versions and are most diffuse also in city. They are various much from the first models and have hour also staples (or the entire structure) damped and Disc brakes.

The MTB can be classified based on the chassis and to the suspensions:

front suspended (that is with Suspension fork front)
full suspended or bidamped (with Suspension fork front and arranges damping posterior integrated in the chassis)
rigid (without suspensions)
The MTB to single posterior suspension are passings, in how much little work them.

Various outlines of posterior suspension exist, the more important are:

monoshock (said also monopivot or cantilever): the wagon (that is the part of the chassis to which the posterior wheel is connected) is connected to the chassis through a single point of articulation. It is one simple, reliable outline, and economic. For against much high, in practical has a level of functionality pedalando the suspension does not stretch to oscillate with the movement of the pedals, what that wastes energies of the ciclista and reduces the comfort.
deformable quadrilateral: the suspension is to quadrilateral shape, with four points of articulation, of which on the linings (that is tubes that up connect forcellino of the wheel with the front part of the chassis) oblique (that is the those). It is more expensive of the monoshock but it has the advantage of being able to be planned so as to to supply one better answer to the disconnections of the land.
quadrilateral horst: it is an evolution of the deformable quadrilateral, of which it resumes the outline, placing but a point of articulation on the low linings (rather than on the oblique ones). It renders the little sensitive suspension to the foot thrust, that is does not create ondeggiamenti of the bici pedalando, present what on the monoshock or the deformable quadrilaterals.
quadrilateral lawwill: it is the equivalent of the suspensions of quadrilateral type used on the sport cars. If very planned in fact it has optimal performances.
vpp: it is a relatively recent suspension, that it emphasizes the advantages of the quadrilateral horst, that is optimal answer to the sollicitations and to it hits of the land and insensibilità of the suspension to the foot thrust.
urt: it is a suspension in which the Bottom bracket them (that is the axis on which ruotano the cranks) are connected to the posterior wagon and not to the front part of the chassis. It is practically in disuse, for its insufficient performances, and comes only more used on bici than lowest range

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