SUCH DIFFERENT MOUNTAIN BICYCLES HOW TO CHOOSE

It is supposed that the first mountain bicycles have been assembled in California in 1978 when two friends bicycle racers have developed the powerful and strong bicycle for mountain routes and off road terrain. Today the set of models of mountain bicycles both for extreme conquest of mountain tops, and for driving on the woods, park footpaths and city roads is produced.

Design

Mountain bicycles are intended for comfortable rise on a height, driving on the cross-country terrain and extreme jumps. The frame of mountain bicycles is made from light and strong materials and has the underestimated geometry.

Practically all models are completed with the strengthened wheels with a diameter of 26, 27,5 or 29 inches with double rims and thick tires with the pronounced drawing of a protector which provide to the bicycle good passability and coupling with the road.

Transmission has a large number of speeds, in comparison with road bicycles that allows to choose the most convenient mode for passing of different types of a paving.

Depreciation

As a suspension bracket mountain bicycles are divided into four look: hardteyl, two-suspension, rigid and software-teyl.

Hardteyl — type of the bicycle having only a forward depreciation fork with a range of course of 80 - 120 mm and the landing, average on height, reducing load of hands. It is the most universal design suitable for driving both on off road terrain, and on asphalt. Bicycles with such type of a suspension bracket are popular because of an optimum ratio price/quality, and the huge range of models is presented at the market.

Two-suspended bicycles have shock-absorbers both in front, and behind. They provide good management on the different surfaces of roads in any weather conditions and allow to jump at a full speed through obstacles. Two-suspensions are widely applied in such disciplines as daunkhill, freeride and Trail.

Soft-teyl is a kind of the two-suspended bicycle with a deformation suspension bracket of a back wheel. She isn't intended for jumps, but helps when driving on the uneven road.

Rigid — the bicycle without shock-absorbers, is suitable only for flat roads.

Disciplines

Different types of the bicycles having the features are intended for each of types of extreme driving.

History of modern mountain bicycles has begun with a cross-country. Classics of a cross-country — the light sports bicycle for a high-speed cross-country on the cross-country terrain. Generally it is hardteyla with an air fork with a half-speed 100 mm and blocking of the course though two-suspensions also participate in competitions in a cross-country. Kantriyny bicycles perfectly feel also on city roads.

Daunkhill is a high-speed driving from the mountain by bicycle. On baizes for this discipline install the equipment of the highest level. Bicycles for a daunkhill — only two-suspended, with powerful depreciation and an average the course of a fork of 160 - 200 mm. Superwide tires and a low frame allow to gather the high speed at which the bicycle keeps excellent stability. Weight isn't so important for such bicycles therefore sometimes it exceeds 20 kg. Baizes for a daunkhill aren't suitable for driving in the city and arrivals on big distances.

Bicycles for freeride — something average between models for a cross-country and a daunkhill. Most often it is two-suspensions with rather rigid shock-absorbers, but also hardteyla meet. This kind of mountain bikes — for fans of aggressive driving, driving on hummocks and jumps from slopes therefore bicycles have the underestimated frame, the high-quality equipment and disk brakes.

The trial is difficult technical elements, jumps through obstacles and overcoming artificial obstacles in the routes which are specially created for this purpose. The bicycle for a trial is more similar with BMX, he is stronger cross- kantriyny, but it is easier than models for freeride is either hardteyl, or rigid. For him the small easy frame and a wheel with a girorotor are characteristic of turn of a wheel on 360 °. On such bicycles lobbies and back hydraulic brakes are established, but there are models and with one brake.

Bicycles for a dert-dzhamping are very hardy extreme models with a strong low frame and wheels of the increased durability. They can be used for tricks on city ladders and parapets, or on the special routes consisting of continuous springboards. For it is grated the bicycle without shock-absorbers approaches, but there are also worthy hardteyla having rather big weight for preservation of balance in air. As well as models for a trial, dert-bikes are similar to BMX: they are equipped with a girorotor and have no transmission and brakes which impede the implementation of tricks.