Many consumers have a question when buying a car, especially compact cars and small cars. How do the rear wheel brakes differ according to the specific model? After further understanding, basically, consumers will come to a conclusion that disc brakes are much higher than drum brakes. Drum brakes are basically poor performance, backward technology, low cost and low-end vehicles. Pronoun, is the drum brake really unbearable? Or is the disc brake really higher than the drum brake? Today, Mr. Qi came to the system to talk about disc brakes and drum brakes.
Everyone knows the appearance of disc brakes and drum brakes. In fact, the principle is basically the same as the bicycle brake system, and the biggest difference between disc brakes and drum brakes is different from the brake method. Let me talk about the drum brakes, that is, the drum brakes. The working principle of the drum brake is simply to go to the outer top. The two brake shoes are used to push the brake drum outward to prevent the wheels connected by the brake drum from rolling smoothly, so that the wheel can be decelerated or stopped. Due to the different forms of the brake shoes, there are many types of brake drums, including the hoof, the double hooves, etc., some of which are used in the previous high-end cars, but now the basics of these subdivisions They are slowly withdrawing from the historical stage. Now let's talk about the disc brakes in the simplest language.
Disc brakes are actually the same as common bicycle V-brakes or disc brakes. The principle is simpler, that is, it is caught. Clamp the brake disc with two or more brake pads on the caliper. Do not allow the wheels connected to the brake disc to roll smoothly, so that the wheels can slow down or stop. The disc brakes actually have a lot of deformations. For example, some models are more convenient for parking (that is, hand brakes). To avoid redesigning the brake system, a combination of drum and drum brakes is used, and the built-in drum type is required when parking. Brake, pull the brake shoe through the cable to achieve the parking brake effect. Many rear-wheel brake structures are used in many models.
Which kind of brake is better?
Talk about the respective principles and differences between disc brakes and drum brakes, then let's talk about which brakes are better. In fact, through the current brake development form of the family car, it can be clearly felt that the disc brakes seem to be better in overall performance. Let's talk about it in detail below. Starting from the aspect of braking force, many people think that since the family car, including sports cars and even super-runs, are equipped with disc brakes, the disc brakes are sure to have a stronger braking force. However, in fact, it is counterproductive. The two types of brakes of the same level, because the drum brake has the advantage of natural brake pads, the friction is also large, and the natural braking force level is much better than the disc brake. This is determined by the physical characteristics, so since the braking force is much larger, why use a disc brake?
In fact, the large braking force does not mean that the overall braking effect is good, because the performance of the braking effect is subject to many factors, the braking force is part of it, in addition to the ability to resist heat decay and water resistance, and the brake feeling is also known as the foot feeling. . In addition to the braking force, the drum brake can be said to have no advantage in the other three aspects. Many people who have been to the track or watched the car know that the impact of the thermal decay on the braking performance is very large. The unmodified family car may have a distance of 2 to 3 from the same braking point. Meter.
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