Most often used on road bikes, but there they are gradually being replaced by other types of brakes. The name of the brakes speaks volumes about its design: the brake pads are pressed against the rim by curved levers that look like pliers. Caliper brakes installed on Forward Impulse bikes (2020).
How To Replace Your Disc Brake Pads
Disc brakes with minor changes, modifications and adaptations came to the cycling world from the world of motorcycles and cars. Depending on the type of drive, disc brakes are divided into mechanical and hydraulic. In a mechanical disc brake, the force from the brake lever to the brake pads is transmitted by a cable, while in a hydraulic disc brake, through a hydraulic system filled with brake fluid. When you press the brake lever at the mechanical brake, a cable is pulled, this force is transmitted to the brake pads, which, pressing against the brake disc, lead to braking. In the case of a hydraulic brake, the required force is transmitted via the hydraulic line from the brake lever directly to the pads. Forward bicycles with disc brakes are very easy to identify: there is the word “disc” at the end of the model name (for example Forward Next 3.0 disc).
Their mechanism consists of two levers with brake pads attached to the pivots on the fork. With the help of a pair of rods, the cable moves the levers, after which braking occurs. This mechanism is simple and reliable, but it is less and less common. It is superseded by other other types of brakes with more effective stopping power.
Brakes for a bicycle, like for any other vehicle, are an indispensable element necessary to control the bicycle and ensure safety. The following types are distinguished:
Drum brakes. 2. Rim brakes. 3. Disc brakes.
Which type of brakes should you choose? To answer this question, it is worth understanding the features of each type of brake.
Disc mechanical brakes
Mechanical disc brakes, as a rule, are installed on mountain bikes (Forward Next 27.5 2.0 disc (2020), Forward Iris 26 2.0 disc (2020), etc.) and touring bicycles (Forward Yukon 2.0 disc), less often on city bikes (to For example, Forward Tracer 26 2.0 disc (2020)).
V-brakes are applied in the same way as cantilever brakes. The brake cable is routed from the side to the top of the brake arm. The brake lever compresses both parts of the brake with cartridge brake pads. This system of parallel pad pressing allows for efficient braking. In addition, the cartridge brake pads can be easily changed using a conventional hex wrench. At the moment, this type of brake is the most common. It is used on almost all types of bicycles. For instance:
Since V-brakes are the most common type of rim brakes, it is worth considering their advantages and disadvantages separately.
Disc brakes device
A disc brake consists of a brake disc (rotor) attached to the wheel hub, and a brake machine (caliper), inside which the brake pads are located. Disc rotors come in several sizes: 140, 160, 180, 185, 203 and 220 mm. The larger the rotor diameter, the more efficiently the brake works, as the arm of the brake force lever increases.
The caliper (brake machine) is mounted on the fork or on the frame. Inside the caliper there are two brake pads that are pressed against the rotor by one or more pistons.
Brake pads can be filled with metal filings or organic material. Metal-filled pads last for a long time and are more resistant to wear. Organic pads are softer, wear in quickly and provide smoother braking.
This is the most popular type of brake today. Their principle of operation is as follows: when a force is applied, which is transmitted through a cable to the brake levers, the brake pads on the brake levers fit tightly to the wheel rim, which ensures braking. Rim brakes are available in cantilever, caliper and V-brakes.
Checking the brake pads on a bicycle
Check the brake pads on your bike. this is a useful skill for any cyclist. Timely replacement of the pads will protect the parts of the bicycle’s brake system from excessive wear, component failure and ensure proper performance of the brakes themselves.
How to check pad wear on bicycle brakes?
How to check pads on rim brakes (V-brake)?
Rim brakes are easiest. pads are open, always in sight. Visual inspection can be done without tools, wheel removal and other manipulations. The recommendations are suitable for both regular v-break pads and cartridge refills. Open the brake lugs and carefully examine:
- cracks appeared on the block, pieces broke off, it became fragile. the composition of the pads is dry, very old, replacement is necessary, such a part will no longer slow down.
- pad wear is uneven, worn off at an angle, not equally on all surfaces. incorrect position of the pads (not parallel to the rim track), in most cases replacement is necessary if the problem is detected at the beginning of wear. you need to level the surface of the pad and adjust it correctly.
- the pad (brake insert, if cartridge pads) has worn out until the divisions (indentations) along the length of the pad disappear. the block has worn down to the base, the cuts that drain water and dirt are gone, a replacement is needed.
- with severe wear of the pads, a metal base may appear, which can seriously damage the rim, in such cases, during braking, there are extraneous sounds, scraping of metal on metal.
Do the brakes on your bike make noise or squeak? Finding causes.
The appearance of strange noises when braking the bike or poor brake performance, first of all, check if the cables, shirts, hydraulic lines and others are still in place. If everything seems to be in place, proceed to check the wear of the pads. Brake pads for a bicycle are a consumable resource, which depends on the mileage, riding style and conditions of use of the bicycle.
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Since good bike brakes are personal safety for every cyclist, check pad wear regularly. It is especially important to carry out such an inspection before long trips, hike. it’s easier to replace this consumable in time than to be left without brakes during a trip or another ride.
How to check the pads on bicycle disc brakes?
Checking the pads on mechanical and hydraulic disc brakes is not an easy task for a beginner cyclist. The pads are located in the middle of the brake caliper and must be removed from the caliper to visually inspect them.
How do you get the pads on disc brakes? Remove the bicycle wheel, carefully remove the block by the special “tail”. On brake systems from different manufacturers, the pads can be fixed in the caliper using a bracket, cotter pin or bolts. Remove this retainer before removing the pads. On hydraulic brakes, do not move the brake lever, otherwise the pistons will converge (if this happens, this article will solve the problem).
After removing the pads, carefully inspect the pads for damage and wear:
How to Replace Bicycle Disc Brake Pads
- the block has worn down to the metal base. the brake compound resembles pressed crumbs, grains or shavings. If there is no such composition left on the block or its layer is thin (up to 1 mm). block needs replacement.
- the surface of the pad is loose, the brake compound has crumbled or crumbled from the base. for good brake performance, a pad replacement is necessary, if the damage is minor, operation with close supervision is permissible.
- the block is worn out at an angle, unevenly. a replacement is needed if the wear is insignificant, along the edge of the surface, the pad can be used, but the contact of the pad with the rotor decreases, which is directly related to the effectiveness of the brakes. You should also find out the reason for uneven pad wear.
- there is a lot of dirt, dust, rust, oil, etc. on the pad, it is necessary to clean the dirt, degrease the pad and the rotor, cleaning and the caliper will not interfere. Also, with dirty parts, the brakes can squeak, whistle and otherwise irritate the cyclist, how to get rid of this problem in this article.
To replace the pads, contact the workshop, for self-service, read our articles and choose quality pads for replacement. Remember to inspect the pads before big trips, bike trips, or any long ride. good brakes mean cyclist safety and confidence even in unforeseen situations.