Advantage:
1. The drum brake has a good self-braking effect. Because the brake is used to stretch the film, the wheel rotates and the brake drum is twisted at an angle (of course not so large that you can easily see it). The brake is used to make the film out. The greater the tension (brake braking force), the more obvious the situation. Therefore, generally, large vehicles still use drum brakes. In addition to the lower cost, the difference between the drum brakes of large vehicles and small vehicles may only be the large-scale pneumatic assistance. Small cars use vacuum assistance to help brakes.
2. Lower cost: Drum brakes have a lower manufacturing technology level and are the first to be used in brake systems, so the manufacturing cost is lower than that of disc brakes.
3. The hand brake mechanism is easy to install. Some models with disc brakes on the rear wheels will install a drum brake hand brake mechanism in the center of the brake disc.
Disadvantages:
1. The diameter of the brake drum of the drum brake will increase after being heated, which will increase the stroke of stepping on the brake pedal, which is likely to cause the brake response to be less than expected. Therefore, when driving a vehicle with drum brakes, try to avoid continuous braking that causes the brake pads to thermally degenerate due to high temperatures.
2. The brake system reacts slowly, and the pedaling force of the brake is not easy to control, which is not conducive to high-frequency braking actions.
3. There are many parts with complex structures, and the brake clearance must be adjusted, which makes maintenance difficult.
