1. Drum brake is to install two semi-circular brake pads in the wheel hub, and use the "lever principle" to make the brake pads contact with the inner surface of the drum and cause friction to brake.
Disc brakes use brake calipers to control two brake pads to clamp the brake discs on the wheels. When the brake pads clamp the disc, friction will occur between them.
2. The brake system of the drum brake can use lower oil pressure. The diameter of the drum brake will increase after being heated, and the brake response may not be as expected.
The heat dissipation of the disc brake is better than that of the drum brake. When you step on the brake continuously, it will not cause the brake to decline and cause the brake to fail. The brake power of the left and right wheels of the disc brake is relatively average. The brake disc has good drainage and can reduce the phenomenon of poor braking caused by water or sediment.
3. The hand brake mechanism of the drum brake is easy to install. Some of the rear wheels are equipped with disc brakes, and another drum brake is installed in the center of the brake disc. The pedaling force of the brake is not easy to control, which is not conducive to the rapid braking action.
The friction area between the disc brake pads and the brake disc is smaller than that of the drum brake, so the brake force is weaker. In order to improve the shortcomings of the brake force, a greater pedaling force or increased oil pressure is required to improve the brake power.
4. The parts processing of the drum brake is relatively simple and the manufacturing cost is low, but there are many structural parts.
The disc brake has a simple structure and is easier to maintain, but the brake pads are worn out and replaced frequently.
