Adhesion , tires and brakes

* Adherencia is the ability to grip, with the vehicles, the road sign .

* LI factors involved in adherence are:

The materials with which it is constructed the way ( cobblestone , asphalt , cement , etc.).

The state in which the airway (dirty , clean , wet, dry , etc.).

The wheel



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The wheel is divided into two parts:

Rim: metal part of the wheel.

Tire: elastic portion of the wheel.

The tire comprises:

Air: with some exceptions ( tractors) , all tires have air inside.

Camera: It is responsible to contain the air. Tyres tubular have no camera.

Cover: This is the component designed to wrap the air ( tubular) or camera.

The roof is composed of:

Tread: The part with drawing, which is in contact with the pavement.

Flanks: They are found on the sides of the tread .

Heels: Are the rings to fixing the tire.

Housing: The skeleton of the tire. It consists of strips of canvas in the form radial or diagonal.



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* LI must get air tires , inside , the advise the manufacturer pressure.

* ET his will by pressure manometer, Which usually find at gas stations .

* Procuraremos measure tire pressure when they are cold.





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Tire wear :

* LI tire , as well as its use is eroded by :



An aggressive driving.

Speed.

Climate.

The load.

Incorrect inflation pressure .

The type of firm and the use of chains .

* LI tire should be replaced, For the same type , when the depth of their mark is less than 1.6 mm, suffering cuts or being deformed.

* La wheel may unbalanced When losing weight unevenly. If you have any unbalanced wheel , you'll notice vibration in the steering wheel at high speeds.

* Unot the main factors that can cause the bursting of a wheel, the lack of pressure.

* Chen busting a wheel , grasp the steering wheel firmly , gently lifting off the throttle without stepping on the brake.



Acting before a puncture :



Stop the vehicle in an appropriate place.

Put the hazard warning triangles .

Loosen wheel nuts .

Raise the vehicle by the cat.

Change the wheel , lowering the vehicle and contact the firm, finish tightening the nuts.



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Brakes:

* Tll the cars must be equipped with the braking systems following :



Brake service (Standing) : Allows you to slow down, acting on all wheels.

Brake parking (Hand ) is employed to stabilize the detention of a vehicle. It works , mostly from the rear wheels.

Brake emergency: A braking system , an alternative to service . It works on two wheels , one axis and oblique.

Brake motor: The engine of the vehicle can transmit two forces of progress (when racing) or clips ( when you stop accelerating) . These forces can be transmitted only to the wheels of the front axle ( motor vehicle ), only the rear axle wheels (vehicle propulsion ) or all-wheel drive ( 4X4 vehicle or all-wheel drive ). I mean ... , motor brake acts on the driving wheels.

* Ehere are two types of brakes , depending on braking element using :

Brake drum: Its elements are braking shoes

Brake disk: Its elements are braking pills

* Nor should we stop abruptly (for risk of wheel lock ). We adapt the use of the brake to the state of the pavement , making smooth and progressive manner .



Performance against a skid :

* El skid is the loss of adhesion of the wheels.

* Si the vehicle skids rear wheelTo the right ... for example, we turn the wheel to the same side , to counteract the slide. In the event that the skidding, occur within the front wheels, for the same reason , we turn the wheel to the opposite side .