Car And Truck Brake Parts

Drum Brakes

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Drum Brakes
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It's always a good idea to keep up with your automotive repair, and few parts of your car are as important as its braking system. They keep you safe, and they keep you on the road. Airbags, crumple zones and backup cameras are all great safety features, but they're not nearly as essential as a set of properly working brakes.

No matter what kind of vehicle you drive, there's a lot riding on your brakes. Even in the sturdiest Humvee available, it's far better to avoid an accident altogether than to rely on its crash test rating. Brakes are even more important in such a heavy vehicle, actually, because they need to compensate for the powerful momentum and longer stopping distance of a truck.

There are two basic types of brakes used in most personal vehicles, drum and disc brakes. Disc brakes are more sensitive, but drum brakes usually last longer between replacement. Some cars have disc brakes on all of the wheels, but many cars have disc brakes in the front and drum brakes in the rear.

Disc brakes are probably more familiar to the average person. In this model, the wheel is attached to a smooth metal disc, called a rotor, that spins with the axle. Each disc brake has two pads, one on each side. When you press the brake pedal, the pads clamp down on the rotor and slow its rotation.

It's important to have a trustworthy car repair shop inspect your brakes periodically, because the pads wear down over time. Don't wait until you hear those distressing sounds. The brakes are already in very bad shape once you start hearing grinding, clanking or squealing sounds. If the surface is worn down enough the pads won't be able to grip the rotor properly, which makes them less effective. If the pads become worn down to the point that bare metal is scraping and scratching the rotor's surface, you may end up paying for a new rotor.

Most of your stopping power comes from the front wheels, so disc brakes will always need periodic replacement. However, you can still use a few tricks to keep your brakes in good condition and extend their usefulness. Don't ride the brake pedal, use it only when you need it. Also, try not to keep it pressed down when stopped. Instead of braking all the way down from freeway speed, try downshifting instead. This can slow a car surprisingly quickly, but the technique works best with a manual transmission.

Drum brakes work a little differently. Disc brakes are relatively easy, but drums are best left to an auto repair professional. The mechanism is enclosed in a cylindrical drum found behind the tire, hence the name. Instead of clamping onto the exterior of a disc, drum brake shoes slow the wheel by pressing against the interior surface of the drum. This is usually where the car's emergency brake is connected. To keep your rear brakes in tip-top shape, always be sure to release the lever before driving off.

Advanced Auto in Chantilly VA offers the very best South Riding car repair for the entire Northern Virginia area. We service Fairfax County, Reston, Stone Ridge and Centreville where you can take advantage of our auto repair shop's expert services and certified parts that are fully guaranteed for one year or 12,000 miles.

Why Car Brakes Are So Important?

One of the most amazing thing about the car brake is, a small paddle can stop a huge vehicle with a single push of brake pad and how does it take place is a mystery for many people, but nowadays most people have come to understand the process. When you press the brake pedal with the help of your foot, car transmits the force from your foot to its brakes through a fluid, but the actual brakes needs a much greater force than you could apply with your leg, your car must also multiply the force of your foot. It is technical process in which, the brakes transmit the force to the tires, and tires transmit the force to the road using and the law of friction applies.

Types of Brake:

There are two different types of brake system used to stop vehicles: drum brakes and disk brakes.

Drum Brake

Drum brake system slow down a car by friction, by pressing brake shoes against a drum. The drum brake mechanism consist of different components (Drum, Brake lining, Return spring, Piston, Wheel cylinder, Brake shoe, Brake pads, Wheel hub, Stud,) with the help of all these components a vehicle can be stopped by just putting little pressure on brake pedal.

Disk Brake

Another system is a disk brake system, which is a lot simpler than the previous one and more effective as well. The drum brake is a round, flat, piece of metal, pressed against the wheel to slow or stop the car and the main component of this system are (Brake line, Splash shield, Disk brake). These two systems are the primary and mostly used.

Anti-Lock Brakes (ABS) There are some other systems as well, those are developed recently and installed in almost all newly assembled cars. This system is Anti-Lock Brakes (ABS), the system consists of an electronic control unit, a hydraulic actuator (stimulator), and wheel speed sensors at each wheel. If the control unit detects a problem in system, it will kindle an ABS warning light on the dash to let you know that there is a problem.

About the Author

The author has several years of experience in the automobile industry and is regarded as an expert in the field of different Car Brake components like Brake Rotators, Brake Pads, Brake Shoes, Brake Drums, Brake Discs and Brake Calipers.

What are the advantages of drum brakes over disc brakes?

I am surprised to see that certain cars and trucks still come with rear drum brakes in this day and age.
I suppose they are cheaper, but do they also have other advantages over disc brakes?

One reason why you have disc brakes on every wheel is "cost" and "inventory management" related (fewer parts handled in the shop, smaller number of suppliers to the car maker).

Here are some considerations still in favor of drum brakes:

1. Drum brakes are smaller for the same brake force.
A design advantage in a confined space. In fact "it is very easy to fit a drum handbrake inside a disc brake so that one unit serves for both footbrake and handbrake."

2. They provide "self-applying characteristics" (a sort of positive feedback amplification of the brake force). I.e. contrary to disc brakes drum brakes as a rule do NOT need servo assistance.

3. "Drum brakes are still often used for handbrakes as it has proved very difficult to design a disc brake suitable for holding a car when it is not in use."
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