What is the difference between ABS and CBS on motorcycles?
3 Answers
Here are the differences between ABS and CBS on motorcycles: Functional aspects: CBS does not have an anti-lock function. This system can only reasonably distribute braking force between the front and rear wheels. The core function of CBS braking is that when the rider operates either the front brake or the rear brake alone, both wheels receive appropriate and effective braking force. ABS has an anti-lock function, which prevents wheel lock-up during heavy braking. The role of ABS is to automatically control the braking force during vehicle braking, ensuring the wheels do not lock up and maintain a rolling-sliding state, thereby maximizing the adhesion between the wheels and the road. Principle aspects: The ABS system is an anti-lock braking system that prevents wheel lock-up during emergency braking at high speeds by applying intermittent braking (pulse braking). This means it provides braking effect without locking the wheels, thus preventing skidding during emergency braking at high speeds and ensuring driving safety. The CBS system refers to the combined braking system, which links the front and rear brakes. The principle of this system is that when braking, if both front and rear brakes are applied simultaneously, the vehicle achieves the shortest braking distance. Therefore, some manufacturers link the rear brake to the front brake.
I've been working in repair shops for over a decade fixing motorcycles, and the most frequently asked question is about the difference between ABS and CBS. Simply put, ABS prevents wheel lock-up, especially during emergency braking or on slippery surfaces. Sensors detect when the tire is about to lock and automatically modulate the brakes to prevent skidding or fishtailing, similar to what you find in cars. CBS, on the other hand, links the front and rear brakes together. When you pull the front brake, it automatically distributes some braking force to the rear, preventing new riders from flipping over due to braking the front wheel alone. ABS focuses on preventing loss of control, while CBS emphasizes balancing braking force. Nowadays, many mid-to-high-end bikes come equipped with both systems, but bikes with just ABS typically cost around 2,000 yuan more than those with just CBS.
Last time I accompanied a friend to choose a car, the salesperson kept recommending models with ABS. I've studied its working principle: ABS is an electronic system that relies on wheel speed sensors and a hydraulic unit, acting like an intelligent switch for the brakes—when nearing lock-up, it rapidly pulses the brake lever. CBS, on the other hand, is purely mechanical, using a proportioning valve to distribute brake fluid; pulling the front brake also activates the rear brake caliper. ABS prevents skidding and can be a lifesaver in rainy conditions, while CBS helps beginners avoid accidents caused by incorrect brake force distribution. It's important to note that retrofitting ABS later is quite troublesome, whereas CBS is relatively easier to install as an aftermarket modification.
