VW Mk1 Golf Brake System

The hydraulic dual-circuit brake system with diagonal distribution equipped in the Volkswagen Mk1 Golf was a significant safety feature that contributed to the car’s reputation for reliable stopping power and responsive braking performance. Here’s an overview of its components and functionality:

1. Hydraulic Dual-Circuit Brake System: The Mk1 Golf featured a hydraulic brake system with dual circuits. This means that there were two separate hydraulic circuits—one for the front brakes and one for the rear brakes—each operating independently. In the event of a brake fluid leak or failure in one circuit, the other circuit would still provide braking capability, enhancing safety.
2. Diagonal Distribution: Diagonal distribution refers to the allocation of braking force across the front and rear axles of the vehicle in a diagonal manner. This distribution helps ensure balanced braking performance, improving stability and control during braking maneuvers.
3. Front Disc Brakes: The front wheels of the Mk1 Golf were equipped with disc brakes. These disc brakes provided efficient braking performance, particularly under high-speed braking conditions. Additionally, Mk1 Golf models with higher-powered engines, such as the 82 kW variant, were equipped with internally ventilated disc brakes at the front. Internally ventilated discs dissipate heat more effectively, reducing the risk of brake fade during prolonged or aggressive driving.
4. Self-Adjusting Drum Brakes at the Rear: The rear wheels of the Mk1 Golf were equipped with self-adjusting drum brakes. Drum brakes are a simpler and more cost-effective braking solution compared to disc brakes, particularly for rear-wheel applications. The self-adjusting feature ensured that the rear brakes maintained proper clearance as the brake pads wore down, optimizing braking efficiency and longevity.
5. Brake Booster: The Mk1 Golf was equipped with a brake booster, also known as a vacuum brake booster or vacuum servo. The brake booster amplifies the force applied to the brake pedal by the driver, making it easier to achieve effective braking without requiring excessive pedal effort. This feature enhances driver comfort and confidence, particularly during emergency braking situations.

Overall, the hydraulic dual-circuit brake system with diagonal distribution, combined with disc brakes at the front and self-adjusting drum brakes at the rear, provided the Volkswagen Mk1 Golf with reliable and responsive braking performance. This system offered a balance of safety, efficiency, and durability, contributing to the Mk1 Golf’s reputation as a well-engineered and dependable compact car.