Can You Convert Mechanical Disc Brakes to Hydraulic?

In the cycling world, transitioning from mechanical disc brakes to hydraulic disc brakes can offer significant improvements in braking performance. This article guides you through the process and addresses common misunderstandings about brake conversion.

Introduction to Brake Systems

Before delving into the conversion process, it is essential to understand the two types of braking systems: mechanical disc brakes and hydraulic disc brakes.

From Mechanical to Hydraulic: The Transition

When it comes to bicycles, you do not necessarily need to buy a complete set of hydraulic disc brakes. Often, the existing rotors can be reused. However, you will need to replace the brake levers and calipers, which are the key components for hydraulic brakes.

Necessary Tools and Supplies

To replace your mechanical disc brakes with hydraulic ones, you will need the following:

A 5mm hex key for removing and installing the front and rear calipers. If your bicycle has a Y hex wrench (which includes 4mm, 5mm, and 6mm hex key sizes), this can also be used to loosen or tighten the bolts holding the brake hose to the frame. A bottle of disc brake cleaner to clean the rotors after installation. Alternatively, you can use Isopropyl Alcohol or soapy water and clean rags for cleaning the rotors. The manual process for removing the handlebar grip may also require this.

Ensuring you have the correct tools and supplies is crucial for the successful conversion of your brake system.

H2: Historical Context of Brakes in Motor Vehicles

Way back when, cars had mechanical brakes activated by a linkage. However, in the late 1930s, all major manufacturers switched to hydraulically activated brakes. Since then, virtually all disc brakes have relied on hydraulic activation. Additionally, it is recommended to flush out the old hydraulic fluid, commonly known as brake fluid, approximately every 18 months to prevent rust and ensure optimal performance.

The Incompatibility of Mechanical and Hydraulic Brakes

A key point to remember is that the rotors and pads can be used with both mechanical and hydraulic systems, depending on the manufacturer. However, converting one system to the other is not possible without producing a mechanical or hydraulic failure.

Understanding Hydraulic and Mechanical Brakes

Meantime, mechanical brakes usually feature shoe brakes inside a drum. In contrast, hydraulic disc brakes operate more efficiently and provide better stopping power. Converting from a mechanical system to a hydraulic one requires careful preparation and the right tools.

Conclusion

To sum up, while it is technically feasible to keep the same rotors when transitioning to hydraulic disc brakes, the levers and calipers need to be replaced. Understanding the nuances of each brake system helps in making informed decisions about maintenance and upgrades for your bicycle.