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Understanding Disc Brakes

Losing ones brakes is one thing that every motorist is worried about.A car's Brake System depends on the brake disc to actually stop a car that is in motion. Usually the single- piston floating caliper, a brake disc has the following main components:

Elements of a disc brake

* The brake pads
* The caliper, which contains a piston
* The rotor, which is mounted to the hub

The understanding of these key auto parts will largely affect how one can learn more about how break discs work.Unlike in our ordinary bicycle where a caliper clutches the brake pads directly to the wheel, in a disc brake, the brake pads squeeze the rotor instead of the wheel, transmitting the force using hydraulics instead of through a cable. The resulting friction between the pads and the disc then decelerates the disc.

Looking at it in a dork's viewpoint, when a car moves, it generates a form of energy called kinetic energy. The brake system of a car changes this energy to heat by drawing on friction. It is because of this friction that nearly all car disc brakes are vented.

Vents

A vented disc brake has a set of vanes that pumps air through the disc to supply cooling. Located between the two sides of the disc, this dissolves the heat made by the friction between the pads and the rotors.

An exceptional characteristic of the single-piston floating-caliper disc brake is that it is self-centering and self-adjusting. The caliper glides from side to side but each time the brakes are pressed it has the ability to move to the center. One must be aware that there are also no springs that pull the pads away from the disc making them always stay in light contact with the rotor. This ensures that much application of pressure in the brake pedals are not needed to engage the brake pads. Because the pistons in the brakes are much greater in diameter as compared with the ones in the master cylinder, this is a very significant aspect to consider. In case of rotor wobble where there is more space between the rotors and the pads, it will take numerous applications of the brake pedals before sufficient fluid is pumped into the brake cylinders to engage the retracted pads.

Self-adjusting disc brake

It does not follow that extra pistons will actually result to a better disc brake. The four-piston fixed- caliper design or the dual piston fixed brake designs utilized by older car models have been practically phased out because of a single-piston's reliability and affordability.

Emergency Brakes

In terms of emergency brakes, they are distinguished from the normal disc brakes on all four wheels by the mechanism by which it is actuated incase of total primary brake failure. The use of cable remains one of the general choices in this type of brake. This type of brakes can usually be seen as a separate drum brake integrated into the hub of the rear wheels.

Other general options include cars which have a lever that turns a screw, or activates a cam. This then presses the piston of the disc brake.

Servicing Your Brakes

Brake pads should be looked over every now and then to see if they need replacement. Usually, a piece of metal, identified as wear indicator aids the motorist to know when it is time for him to change pads. When there is already sufficient wear on the pads, the little metal comes in contact with the discs, creating a squealing sound.

The inspection opening on the caliper also allows one to see just how much friction material still remains on the pads.

What to look for during inspection:

Deep scores worn into the brake rotors. This is especially a result of a worn out brake pad left for an extended length of time on a car.

Warping. The brake rotors may also lose their flatness causing it to shudder or vibrate during stopping.

Both of these problems may be solved by a simple refinishing wherein some material is removed from the motor to even its surface out. Though this is an effortless option to take, this should be done only when the rotors are really badly bent or scored. Doing so more often might lessen the life of your brake rotors, thinning them every time a material is removed. One should know the acceptable thickness for every rotor as found in its shop manual to know when a replacement is considered necessary.

It is every car owner’s responsibility to know how these auto parts work to make his car a safe machine for him to trust his life with everyday.