Are cars with rear drum brakes very poor?
1 Answers
Rear drum brake cars are not very poor; in fact, they offer good cost performance. Below is relevant information about automotive drum brakes: Introduction: Drum brakes utilize stationary brake shoes inside the brake drum to rub against the rotating drum attached to the wheel, generating friction to reduce the wheel's rotation speed. When the brake pedal is pressed, the force applied by the foot pushes the piston in the master cylinder to move brake fluid forward, creating pressure in the hydraulic lines. This pressure is transmitted through the brake fluid to the wheel cylinders' pistons at each wheel, which then push the brake shoes outward, causing them to rub against the inner surface of the brake drum and generate sufficient friction to slow down the wheel's rotation, achieving the braking effect. Advantages of drum brakes: Drum brakes have excellent self-braking properties. As the brake shoes expand outward, the rotation of the wheel causes the expanding brake drum to twist at an angle. The greater the outward expansion force of the brake shoes, the more pronounced this effect becomes. Therefore, drum brakes are still commonly used in large vehicles, not only because of their lower cost but also because the main difference between drum brakes in large and small vehicles is that large vehicles typically use pneumatic assistance, while small vehicles use vacuum assistance to aid braking.
