How to apply the brakes on a bike

Table of Contents

How to apply the brakes on a speed bike. Adjusting the brakes on a bicycle

Adjusting the brakes on a bicycle should be carried out regularly. such maintenance will guarantee the safe operation of the vehicle. There are two main types of brakes on modern bicycles. rim and disc brakes, but disc brakes can be mechanical or hydraulic. The type of brake system installed on a particular bike will determine the process of their maintenance.

How to check and adjust the brakes

There are clear instructions for checking and adjusting the brake system of a bicycle. If you adhere to it, then the whole process will take little time and will be effective.

Procedure for checking and adjusting the brake system of a bicycle:

  • Dry brake test. It is necessary to raise the front wheel and, having unwound it, press the left brake lever. If the wheel comes to a sudden stop during this test, the braking system is in order and no maintenance is required. It is worth considering one nuance. if the brake lever touches the steering wheel, then you just need to pull the cable. The operation of the rear wheel brake system is checked in the same manner. To tension the cable, you need to use curly bolts. just tighten them a little and, if only minor adjustments are required, this will correct the situation. It often happens that such a minimum adjustment does not work. in this case, we look where the end of the cable is on the bike (it is always longer than necessary in advance), unscrew the bolt that holds it. It remains only to tighten part of the cable with pliers and tighten the bolt, applying the possible force.
  • Checking the brake pads. After the brake levers have been tested, the condition of the brake pads should be carefully examined. However, the order of action can be changed. first work with the pads, and then with the handles.

The brake system setting is different for rim and disc types, since different rotating mechanisms and pads are used.

Adjusting the rim brakes

Mountain bikes use a v-brake braking system. using this as an example, we will consider the principles of tuning, since it is also available on other bicycles with rim brakes. The difference can only consist in a different arrangement of bolts and screws that will need to be tightened / tightened.

Note: it is important to observe three main rules:

  • the pads should be parallel to the rim;
  • the gap between the rim and the block should not be more or less than 1 mm;
  • the pads should be symmetrical in relation to each other.

How to achieve these guidelines when adjusting rim brakes on a bicycle:

  • You need to find a hex nut. it fixes the pads. To loosen it and set the brake pads in the desired position, you will need to press the brake lever and watch how the shoe touches the rim. By releasing the brake lever, the shoe can be set to the desired position. it moves up, down and at an angle.
  • The distance between the shoe and the rim of the wheel should not be more than 1 mm, although in some models of bicycles there are also 2-3 mm. exact information about a specific vehicle can be obtained either from the instructions for it or on the Internet for technical characteristics. It should be noted that braking of the wheel should occur even with the minimum pressing of the brake lever. That is, if the wheel stops only when the brake lever is fully pressed “all the way”, then this is incorrect.

After carrying out all the specified work, it is imperative to check the operation of the brake system. First, this is done at idle speed. lift the front wheel up, spin it up and press the handle sharply, then do the same with the rear wheel. The next step is to check the operation of the brake system “in action”. get on the bike and ride 3-5 meters, braking sharply. If the bike has stopped even with a minimal pressure on the brake lever, then the system has been serviced correctly.

Setting up disc brakes

As a rule, adjustment of disc brakes consists in periodically tightening the cable. But often you have to replace the pads, however, on disc brakes they wear out longer than on rim brakes. First you need to find out which specific disc brakes are installed on the bike. brake pad adjustments for hydraulic and mechanical systems will differ.

Experts recommend taking note of the following points:

  • If there are hydraulic disc brakes on the bike, then replacing the pads may not be necessary. they are able to do it on their own. But one caveat should be taken into account. if the hydraulic system is closed, then you will have to adjust the pads in manual mode. for this, special valves are provided.
  • If you have to adjust disc mechanical brakes, then you will need to pull the cable according to the above instructions and check the location of the pads. the distance between them and the disc should be within 0.2-0.4 mm.
  • In order to adjust the pads with disc mechanical brakes, you need to use special bolts. by tightening them, you can see how the pad moves. You need to be especially careful when setting the distance between the pad and the disc. 0.3 mm is too small, it’s easy to make a mistake.

Be sure to check the operation of the brake system in action after the work is done. ride your bike for a few meters and try to brake. If the cable is too tight, or the pads are too close to the disc, then too sharp braking will occur. this is a “surprise” in which the cyclist begins to move forward, but without his vehicle. Therefore, when driving for a test, you need to be extremely careful and careful, if necessary, the disc brake system is adjusted again taking into account previous errors.

How to adjust disc brakes on a bicycle: techniques for hydraulics and mechanics

Normally, the disc brake stops the wheel as quickly as possible, allowing the force to be dosed on the verge of blocking the rotor. Deviations appear after replacing the cable, pads and overhaul. However, the settings are violated during long-term use, as well as after removing the wheel, for example, to seal the bicycle camera at home. How to avoid the famous rotor shuffling, how to eliminate braking, and, in the end, how to restore the factory braking character. these and other questions are answered by the editorial staff of Autobann magazine.

Before adjusting: preparing for tuning

The decision to adjust disc brakes on a mountain or road bike will only be successful if brake diagnostics are included. By the way, the diagnostic measures for hydraulics and mechanics will be different. How hydraulic brakes on a bicycle differ from mechanical ones. we already had a conversation.

In short, in the hydraulic circuit, both pads push the fluid, acting on the caliper pistons, which results in clear modulation and easy handle travel. And in mechanics, only one friction lining is movable. It is brought to the disc by pulling the cable with the brake lever.

However, whatever the brake drive is, it is worth checking:

  • Rotor for deformation. For 100% confidence in the flatness of the disc, it is better to unscrew it and put it on a flat surface. A rough estimate can be made while on the bike by rotating the wheel and estimating the distance to both pads through the slot in the caliper. Friction linings must be equidistant from the disc in any position.
  • Brake pad wear and integrity. Remove the pads by removing the cotter pin and assess the residual thickness of the friction material. The surface in contact with the disc must be free of pits and dents.
  • Cleanliness of pads and rotor. The presence of oil traces and accumulations of dirt on their working surfaces is not allowed. To clean them, you can use fine sandpaper (for example, “zero”) and rags soaked in any cleaner (acetone, ammonia.).
  • Wheel hub location in frame / fork dropouts. The bushing should fit freely into the seat and abut against the counter surface of the frame or fork. Distortions in the installation cannot be avoided, but they should be minimal, practically invisible. Micron skewing is immediately audible on the brakes in the form of rotor shuffling. This is why disc brake adjustments are required after re-mounting the wheel.

It will not be superfluous to look at the state of the drive. With cable disc brakes, check the cable integrity. The end should not be unwoven, and the service life should not exceed 3 years. When replacing the cable, change the shirts. It is not necessary to lubricate it, but if you decide, then do it only with the help of a special lubricant that does not attract dust.

Nothing should leak on the hydraulics. Weaknesses are connections:

  • Master cylinder. hydraulic line.
  • Brake Lever. Master Cylinder.
  • Brake caliper hose.M

These joints received a weak status due to the use of cuffs, which dry out over time and leak.

How to adjust disc mechanical brakes on a mountain bike

Mechanics are gradually becoming history. Now it can still be seen in the budget line of Russian Stels, Forward and Stern. Considering the price, there is no need to talk about the belonging of brake system parts to such global brands as Shimano and Sram. Usually this is some kind of noname kit that has a minimum of settings.

Another nail in the list of disadvantages of mechanical disc brakes is that they need adjustment more often. This is because one of the pads is motionless. As it is erased, the distance between it and the disc automatically increases. Meanwhile, fluctuations in the values ​​of this clearance should be insignificant, otherwise the friction linings will wear unevenly, the quality of deceleration suffers.

Checking the readiness of the system for adjustment

So, first you need to make sure that:

  • The adapter to which the caliper is attached is well secured to the frame or fork (bolts are tight).
  • The already tested rotor is securely fixed with screws on the hub.
  • The wheel is installed on the bike, the eccentric / nuts are tightened.
  • The lamb for adjusting the cable tension is unscrewed no more than 1.5 turns (located next to the handle or caliper).
  • The cable is fixed on the movable arm of the machine.

Working with a caliper

Adjusting mechanical disc brakes on a mountain bike is a two-step process: adjusting the caliper and adjusting the brake lever. To adjust the caliper means to set the pads symmetrically relative to the disc, while the gaps should be minimal.

When adjusting the caliper, it is important to follow the sequence of actions:

  • Center the clipper. Loosen the bolts securing the caliper to the adapter and, moving the caliper, find its position in which the pads will be equidistant from the disc and completely parallel to it. After centering the machine, pull it to the adapter, observing the rule of uniform tightening: turn one bolt ¼ turn, then the other also ¼, and repeat the described procedure again with the first and second fasteners.
  • Align the clearance between the fixed pad and the disc. Any grade of mechanical disc brake caliper has a bolt or adjusting wheel to move the fixed pad closer / away from the disc. Here the task is to use this adjustment in order to bring the block as close to the rotor as possible, while maintaining the clearance. The easiest way to do this is to move the friction pad close to the disc, but so that it does not bend it, and loosen the bolt a little to get a small gap.
  • Adjust the clearance between the moving shoe and the rotor. On serious kits, a special adjustment is provided for this. a bolt that moves the block regardless of the tension of the cable. On cheap bikes, this setting is combined with the cable tension. The task is to set the same gap as between the fixed friction lining and the disc.

Council. Adjust the clearance so that the friction linings grip the disc tightly in the middle of the brake lever travel. To do this, you will need to adjust the tension of the cable using the wing and the position of the fixed shoe (in order to maintain symmetry about the rotor).

Note. Caliper centering can be skipped if this operation was performed earlier and the wheel was not removed.

Adjusting the brake lever travel

This adjustment allows you to adjust the position of the handle when the brake engages. There are no specific recommendations on this matter. Someone is more comfortable for the bike to brake at the slightest pressure on the handle, someone more like the presence of a small idle and a dead grip in the middle of the lever path.

This adjustment is carried out using a screw located in the brake lever housing. The final adjustment of the severity of the brake seizure is made by the cable tension thumbscrew.

Attention! After completing all adjustments, check that the pads are equidistant from the rotor. It is possible that the fixed friction lining will need to be adjusted.

Particular questions on mechanics. How to release the disc brake on a bicycle

It is enough to screw in the cable tension drum a certain number of turns. If its stroke is not enough, unscrew the nut securing the cable to the caliper and loosen its tension. Option “so-so”. unscrew the handle adjustment bolt.

Don’t forget about the fixed shoe. Moving away the movable friction lining with a cable, move the static one, so that symmetry with respect to the rotor is maintained.

How to pull

Proceed in the reverse order of loosening the cable and you will get the desired result.

How to make the brakes brake well

Use good quality pads and center the caliper against the rotor in a timely manner so that the disc bends as little as possible.

Adjusting hydraulic disc brakes on a bicycle with your own hands

The hydraulics are called self-adjusting. Where this status came from is unclear. The centering of the pads relative to the disc can also get lost here. And the shuffling of the rotor itself is one of the first complaints from owners of even new bikes.

In general, setting up hydraulic disc brakes on a bicycle is easier than using cable brakes. But drawing a parallel between adjusting the brake mechanism and cleaning the chain, we can say that working with the brakes is still more difficult than washing the chain at home.

The main goal is the same: to center the caliper, check if the pads are equidistant from the disc, adjust the handle stroke, if its design allows it. It is necessary to carry out the adjustment step by step:

  • Loosen the bolts securing the caliper to the adapter.
  • Clamp the brake lever to the stop and fix it in this position using the available means (wire, electrical tape.).
  • Check the position of the rotor. It should be located exactly in the center of the caliper slot. If the disc is bent, then the pads are not equidistant from it. The required position of the friction linings and the rotor can be achieved by bending the disc in the opposite direction from the observed bending. Fluid will flow from one piston to the other and the pads will align.
  • Tighten the caliper mounting bolts alternately. Use the 1/4 turn tightening technique found in the Mechanics Set-up Technique.
  • Adjust the position of the handle using the screw on its body.
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How to set up rim brakes

Vibrators do not lose popularity. Ease of maintenance, cheap consumables and unpretentious operation. an excellent option for those who use the bike primarily for moving, without extreme and overloading.

The principle of operation is simple. when pressed, the brake lever pulls the cable (G), which moves the brake levers (I), pressing the pads (J) attached to them against the wheel rim. When the handle is released, the levers return to their original position, installed on them by springs. In this article we will analyze how to set up and adjust rim brakes:

Checking the condition of the brakes

First of all, we “unfasten” the brake, as shown in the photo.

Check how the cable (G) moves in the shirt (A) by pressing and releasing the brake lever and pulling the cable back with your finger. the movement should be free, without delay. If the cable pulls hard, it may be damaged, the shirt or cable guide (C), or dirt has accumulated inside the jacket or cable guide. They must be removed and cleaned or replaced.

Check the condition of the pads (J). Grooves for the drain of dirt should be visible on them (the block should not be smooth). Worn pads without grooves must be replaced. Check that the pads are complete with washers and that they are correctly installed.

Observe the order of washers when installing new pads.

The brake levers (I) must rotate freely in their seats and spring apart after compression. If the movement is difficult, the brake during operation may get stuck in the closed position and rub the pad on the rim. In this case, you can remove the levers from the seats, clean and lubricate the contact points and reinstall.

When installing, make sure that the protruding pin on the arm fits into the hole in the frame, and that the hole on the left and right arm is the same.

Adjust the position of the pads

“Fasten” the brake by squeezing the levers and placing the cable guide (C) in the stop (D). Loosen the shoe fixing bolt (K) with a hexagon. We press the lever with the block to the rim and set the block so that it:

  • adhered to the rim with the entire surface
  • did not touch the tire
  • parallel to the rim

In this position, the block must be fixed by tightening the bolt. When tightening the bolt, the shoe may move and must be corrected. It will be easier if you find an assistant who will grip and hold the brake lever while you tighten the bolt.

If your brakes squeal, try the following.

Before tightening the bolt, place a folded sheet of paper under the rear (in the direction of travel) of the shoe, then tighten the bolt. So the pads will be smoother to press against the rim during braking (first by the front, then by the rear) and will not “creak”.

We do similar operations with the second block.

We set the levers symmetrically

For the left and right shoes to wear evenly, they must be at the same distance from the rim. Adjustable by spring tension on the brake levers. To equalize the force that returns the left and right brake levers to their original position, use the adjusting bolts located at the base of the levers.

By twisting the bolt clockwise, we tighten the spring, unscrewing it. weaken it. By pressing and releasing the brake, we check the uniformity of the removal of the pads from the rim. Tighten the bolts on the left and right sides until the pads move the same distance when the brake lever is released.

Adjusting the position of the brake lever and the tension of the cable

To bring the brake lever closer to the steering wheel (for example, so that you don’t have to stretch your fingers too much), tighten the bolt on the brake lever.

In this case, keep in mind that you should not bring the handle too close to the steering wheel. It should not touch the grip when fully clamped.

When the position of the brake lever is set, it remains to adjust the cable tension. The task is to bring the pads as close to the rim as possible, leaving a distance of 2-3 millimeters between the pad and the rim.

To do this, you can tighten the cable in two ways:

    For a rough adjustment, if the cable is very weakly tensioned, and the pads are far from the rim: loosen the bolt fixing the cable in the brake lever, tighten the cable, tighten the bolt.

While loosening the bolt, hold the lever and cable so that the cable does not “run away” and do not have to re-thread it into the seat.
for fine tuning, we use the adjusting screw at the point where the shirt comes out with a cable from the brake lever.

To make the screw spin freely, loosen the lock nut by unscrewing it counterclockwise. Turning the screw clockwise, we release the cable tension (the pads move away from the rim), unscrewing it counterclockwise, we increase the tension (the pads are closer to the rim). When the pads are in the desired position, tighten the lock nut.

That’s all! Checking how everything works. If necessary, re-adjust the springs of the levers (item 3).

Self-adjusting the brakes on the bike

Cycling is an incomparable pleasure. A constant wind in your hair, a feeling of complete freedom and independence, besides, cycling can replace constant trips to the gym, it’s no secret that riding a “two-wheeled” affects absolutely all muscle groups. First of all, legs, back, arms, abs. all this is maintained in an active tone thanks to cycling. The benefits of a bicycle cannot be understated. But in order to enjoy walks day after day, you need to take care of your “horse”. Preventive maintenance includes brake adjustment.

Security issue

Safety comes first! Yes, this rule is worth remembering every time you want to ride a bike. After all, many “ordinary” walks end with injuries.

Defective brakes

Bad brakes are every cyclist’s problem. I don’t really want to carry out checks before each trip. It is tedious and time consuming. But here’s the problem. it’s necessary. A routine brake check can save lives and health. Adjusting the brakes on a bicycle is a painstaking task. Therefore, it is so important to be able to do it right.

Varieties and models of bicycle brakes

Brake adjustments on a bicycle can vary. In each situation, it is worth looking at the type of braking system. Most often, cheap bicycles are equipped with mechanical rim brakes, or, as they are also called, V-brakes.

Disc mechanical brakes

Everything is on the rise. And as you might guess, disc brakes are second in the list of systems of this type. What kind of changes can you see here? All the same levers, the same metal cables. Only the brake itself has been changed. The disc is now bolted to the bicycle wheel. Nearby are two clamps with pads. Yes, the disc wheel is in direct contact with the clamps.

This innovation increases grip. Now, if you hold down the lever, the wheel will not spin. This is why disc brakes are used on sport bikes. With it, the braking distance is halved. And this is what needs to be achieved. Adjusting disc brakes on a bicycle is different from the technique of adjusting rim brakes. So it can be tricky to ride V-breaks all your life and then switch to disc brakes. After all, you will have to learn to configure this system again.

Disc hydraulic brake

So, the winner of the rating. It is hydraulics that rules the world of brakes. How does this system work? There are handles, there is a disc and there are braking elements. They are connected together by rubber tubes, inside of which there is oil, or, as it should be correctly said, brake fluid. What are its pros and cons? The hydraulics are responsive to every pressure. It can be said to instantly transmit pressure. That is why many athletes and extreme sportsmen use hydraulic disc brakes on their bikes. After all, the accurate transmission of sensations helps to win important seconds. The hydraulic brake firmly compresses the metal disc so that, when pressed hard, the rider can literally fly out of the saddle. But, like everyone else, hydraulics have their negative sides.

First, the high cost. This, of course, is a dubious minus, because this system is bought not by ordinary amateurs, but by professionals. Second, the fix issue. Yes, the hydraulics simply cannot be fixed by yourself. The slightest upset. and a trip to the workshop is guaranteed. And again, repairs will cost a pretty penny. Parts of the system, such as tubes, are not very reliable. If this part bursts, brake fluid will escape. Therefore, you can only brake with your feet. Adjusting hydraulic brakes on a bicycle is tricky. This, if possible, it is better to entrust the master.

First steps in repair and adjustment business

As always, start simple first. In this case, from the repair of the simplest brake system. rim. V-breaks are not famous for their ingenuity. A simple device as two and two. What does this mechanical brake system consist of? There are levers that are mounted on the steering wheel. There are tubes (it is correct to call them “shirts”), inside of which an iron cable fidgets. Two clips and pads. Everything is nothing more. That is why there are only three positions on which to regulate the V-break.

Adjusting the rear brakes on a bicycle

In theoretical terms, everything is clear. Three parameters, three actions, and only one result. well-tuned brakes. Once again. this is in theory. In fact, it is difficult for beginners to do everything perfectly. Adjusting the rim brakes on a bicycle is a delicate thing. So you have to be patient first.

So the first step is to adjust the pads. They should be parallel to the rim on both the rear wheel and the front.

Especially do not tolerate the striking of this element on the tire. A couple of kilometers. and the rubber will be frayed to holes. It is undesirable for the block to also go beyond the boundaries of the wheel. From this, it is quickly erased, but the desired effect (good inhibition) is not. Therefore, it is so important to correctly adjust the position of the brake pads. Adjusting a mechanical brake on a bicycle begins with the selection of tools. You will need: a hexagon, a screwdriver and a 12 key. For rubber clamps, you should take only a hexagon. It is worth starting by holding the brake lever. This will push the pads against the rim. Having examined the situation, you can immediately see where something is wrong. Use this tool to loosen the washer. Then, while still holding the brake lever, align the rubber clamp in the desired direction. The same is worth repeating on the other side. This is just the first step towards a perfectly tuned brake.

Adjusting the front brake on a bicycle

The hardest part lies ahead. Do not be afraid, you just need to concentrate. So, you need to adjust the distance between the pads and the wheel. It is important. Again, action monitoring is similar for the front and rear brakes. It is worth remembering that if the distance is too large, the clamps will not fit well. Therefore, there will be no inhibitory effect. If, on the contrary, you leave little room for the brakes, they will strike the rim. This will quickly wear off the pads, and the wheel will constantly brake. In general, you can adjust the distance between the pads and the rim using one nut, which is located on the levers, on top, where the metal cable is attached.

It should be unscrewed, thereby loosening the grip. From this action, the levers will part, do not be afraid. With the force of your hand, you need to lean against the rim. Then squeeze the brake lever so that it does not reach the steering wheel for a couple of centimeters. Keeping the levers in the same position, screw the nut back. Adjusting the brakes on a bike doesn’t stop there.

Spring tension

The springs that are part of the mechanical rim brake system are also responsible for the distance between the wheel and the block. But, unlike a nut with a cable, they allow you to adjust the distance down to a millimeter. That is, more precisely. The spring tension can be changed with a single bolt that is screwed on and off every now and then. This bolt is located on both sides of the brake. Therefore, when a situation arises that one side touches the rim, and the other is separated, you just have to tuck the bolt. and everything will fall into place. When this element is twisted, the spring becomes “harder”. Consequently, the distance will increase. If you unscrew the bolt, the spring will weaken. From this the distance will decrease. So, by adjusting each element, you can achieve perfect accuracy.

Disc brakes

Bicycle disc brakes can be adjusted with just two screws. The first is responsible for the distance between the disc and the pad. The second is responsible for its location in the vertical plane. Therefore, if the rubber clamps are constantly touching the brake or, on the contrary, the disc has left the “contact zone” of the pads, you just have to work hard with a screwdriver. Through trial and error, you can understand what is responsible for what, and then it’s a matter of technology. By tightening the screw, you can immediately adjust the position.

Hydraulic disc brake

Adjusting the brakes on a hydraulically equipped bicycle is difficult. To do this, you need to have special tools and special skills. But you can do everything to prevent breakdowns. Prevention will help the hydraulics not break down and serve the owner for a long time.

Adjusting the brake cable on a bicycle

Braking systems on modern bikes are rim and disc. The difference between the systems lies in the method of braking: the disc is driven by a cable and brakes along the disc fixed on the hub, and the rim. along the rim.

Most often, to set up the system, it is enough to set the symmetrical arrangement of the brake pads, adjust the lever and tighten the brake cable.

Brake cable. mechanical design for transferring force between parts relative to randomly changing positions, thanks to this transmission the brake is applied.

The brake cable for a bicycle has increased strength, consists of a tubular shell and a core moving relative to each other.

The brake cable looks more reliable than the high-speed cable, because takes on an increased load. Long-term operation stretches the wire and you need constant control of the cable stretch.

General cable characteristics

The brake cable for a bicycle is made of wear-resistant thin steel or Teflon threads, evenly woven and covered with a flexible polymer material. Teflon lubricants are used for protection.

The most reliable version of the brake cable is made of stainless steel. Constant use of the bike provokes contamination of the casing.

Over time, the strength of each core decreases: separate frayed areas are formed that are prone to tearing, delamination and bending.

Bicycles, scooters, accessories

Stark Fat 26.2 D (2019). Cube Kid 160 (2019). Desna Desna 2612 V V010 (2018). Stels Navigator 250 Gent 26 Z010 (2018)

The cable sheath (braid) is produced in several modifications:

Twisted braid. consists of several pairs of insulated conductors with the addition of metal, each of them is covered with protective plastic, the inner compartment is treated with a lubricant to reduce friction.

The price category of these braids is low, rarely goes on sale.

SIS braid. spiral braid, instead of thin metal threads, metal sheets are screwed into the spring, the inner surface is treated with Teflon grease.

This type of braid is the most common on the market today and is used on brake and speed cables.

SIS-SP. modernization of a modern rope, it is a parallel threads covered with polymer layers.

Unlike other types, they do not change the length of the wire, and balance the tension. The interior is lubricated with silicone fluid.

The braid is considered the most reliable, due to a number of factors the braking system works most accurately.

Main system functions

The main parameters responsible for the operation of the braking system are:

    Braking force. how much the brake grips the rim and the maximum amount of force required to stop or lock the bike.

The pressure ranges of the lever are called brake modulation.

Wear resistance is an indicator of the expected life of the system, taking into account the observance of operating rules.

Timely maintenance increases the service life of the braking system.

Checking the reaction of the pads

When the brake lever is released, the gap between the pads and the disc should not exceed 2 mm on both sides.

To check the need for adjustment, rotate the brake drum clockwise with the lever pressed and free.

Before replacing the brake cable on a bicycle, check the operation of the pads:

  • The pads are in close contact with the disc (rim). no adjustment required, the brake conductor is at normal tension.
  • The pads do not reach the disc. the length of the cable is shortened to the required level.
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When pressing the lever, the pads should be in close contact with the disc or rim and stop rotation.

  • The brake cable must be adjusted so that when the lever is released, the wheel rotates freely and does not catch on the pads.
  • When the lever is pressed, the position of the brake pads should not exceed 2 mm, and the lever rests against the handlebar.
  • If the lever is unbalanced and rests against the handle, it is necessary to pull the cable.

    Adjusting the cable length

    Before starting the adjustment, check the brake attachment. In case of slight unbalance, the cable can be adjusted on the handlebars of the bike. just tighten the mount on the brake lever with a shaped bolt.

    • Checking the position of the regulators. they must be screwed in the required position.
    • In the area where the cable is attached to the brake lever, unscrew the fixing bolt with a hex wrench.
    • Unscrew the head screw on the brake lever.
    • Remove the cable from the shirt, check it for integrity, replace if necessary.
    • Thread the cable back into the sheath, check for freedom of movement.
    • Connect the end of the cable with the round attachment to the brake lever and screw the head screw.
    • Set the switch to operating mode.
    • Pull a rubber or aluminum boot on the other end of the cable so that the narrow part is directed towards the cable. Secure the cable with the fixing screw.
    • Tighten the adjustment screws temporarily.
    • Use the pliers to set the optimal level of cable tension: the brake must immediately react to the pressure of the lever.
    • Hexagon adjusts the location of the brake pad relative to the disc or rim at a distance of up to 1 mm between them.
    • After that, the rotation of the drum and the reaction of the pads are checked, which should not touch the disc when the brake is released.
    • When pressing the lever, the brake pads only touch the disc area.
    • Having fixed the cable in the required position, tighten the adjusting screw.
    • Tighten the adjusters on the brake lever to finish.

    After fixing the cable, a small piece of the cord remains, in order to prevent it from getting into the bicycle system, it must be wound or cut, leaving 8 cm in stock.

    Brake adjustment and tuning

    Adjusting the brakes involves more than one tensioned brake cable. An important part in setting up the brake system is replacing and adjusting the brake pads.

    Brake pads are replaced when the surface is erased. Disc brakes wear much slower system than rim brakes.

    For guaranteed reliability in braking, adjustment of mechanical disc brakes begins after tensioning the cable. When tensioning the cable, consider:

    • the distance from the brake pads to the disc is 0.2-0.4 mm;
    • pads are symmetrically located relative to the disc plane.

    To do this, after tensioning the cable, check the distance between the shoe and the disc.

    The pads are adjustable with bolts, to move them to the desired range, tighten and loosen the bolt.

    After checking, a gap is set between the pads and the disc so that they do not touch when the wheel rotates.

    And the most important thing is to make sure that the pads provide normal and timely braking of the bike.

    We also recommend watching a video on adjusting the brakes:

    How to tighten the brakes on a bicycle with disc brakes. How to set up disc brakes on a bicycle

    Running a bike is one thing, but fixing it is another. Even skilled and experienced cyclists are faced with the problem of improper / defective disc brake operation. You can deal with this phenomenon if you clearly know the principle of operation and the structure of the system. And you should start with these main points.

    Device and principle of operation

    The difference between the principles of operation of disc and mechanical brakes is negligible. But, there are still differences in their device. Let’s consider step by step, starting with the mechanical type, which is arranged as follows:

    • Brake handle. It is fixed on the steering wheel, for ease of squeezing, with a clamp. It is designed to transfer force to the brake pads, bringing them into action.
    • Cable adjuster with lock nut. The first element serves as a regulating device to limit the cable tension. The second is to fix the regulator itself.
    • Brake lever adjuster designed to determine a comfortable distance to the handlebars.
    • Cable jacket. protecting it from dirt, mechanical damage.
    • To fix the cable, a clamp in the form of a bolt is used, with the possibility of adjustment
    • The mechanism that allows the cable to be set in motion when pressed is called a caliper. Its action is not possible without brake pads. rubber or metal fragments that ensure a tight clamping of the disc.
    • Directly disc (rotor). It locks onto the wheel hub.

    Figures 1 and 2 show schematically all of the above details.

    Figure: Bicycle brakes

    Figure: appearance of the brake lever with main elements

    The main differences between hydraulic and mechanical disc brakes

    The main difference between hydraulic and mechanical types is the principle of transferring the force exerted on the handle to activate them. So, if a cable serves as a conductor of the pressure force in mechanics, then in hydraulics it is a liquid. Both brake and mineral oil (depending on the manufacturer) can be used as a fluid. Both of them are good in their own way, and their effect differs from each other to a small extent. The photo offers a schematic representation of a hydraulic disc brake device.

    Photo: the main elements of the hydraulic system of disc brakes

    Diagnostics of the brake system

    As with the human body, which functions as a whole, before fixing brake problems on a bicycle, diagnostics should be performed to determine the extent of brake damage. After all, if the block is erased, from which the effect on the disc becomes much worse, and there is no stopping effect (due), then only it needs to be replaced, and not the system as a whole. So, below are some of the diagnostic steps you need to take to identify the causes of your bike’s “illness”:

    • Deformation of the rotor can be one of the reasons for the malfunctioning of the brake system. Therefore, removing it is the primary task. When you unscrew the clips and remove the rotor, it must be placed on a flat surface, such as a mirror. Carefully inspect how tightly and evenly the rotor adheres to it, and if you notice irregularities, then they need to be corrected.
    • We dismantle the brake pads to carry out a visual inspection for damage. This action is as follows: find the extension on the caliper, and then turn the pads until they are removed. It is not difficult to visually determine the wear on their surface. So, the figure shows that the block on the right is already completely worn out and requires immediate replacement.
    • Figure: Determining Pad Wear
    • The next “candidates for overhaul” are cables and shirts. This item is suitable for those modes of transport where mechanics are used. It is necessary to check the cable for fiber breaks, deformations, and so on. As for the shirts, remember that their function is to protect the cable from negative factors (accumulation of dust, moisture). Therefore, cracks or breaks simply should not be present here. Both elements need to be lubricated before installation / replacement.
    • For hydraulics, there is also a test that is exclusively inherent in this type of system. the condition of the hydraulic line for leaks. It is important to understand that in the presence of leaks in the hydraulics, the proper pressure may not be exerted on the pads, which automatically disables the system. Damage to the hydraulic lines is quite likely, which are revealed during visual inspection. over, it does not matter at all whether this damage is strong, or insignificant. It is also necessary to check the junction of the brake line, caliper and master cylinder. A rod extends from the brake lever to the piston. another potential place from which fluid can be vented in case of mechanical damage (on the cuffs). After removing the brake pads, it is necessary to check for leaks on the caliper itself.
    • The rotator, like the pads themselves, can get dirty while using the bike. Both oil and dust accumulate here, forming solid layers that interfere with the operation of the system. It is wrong to adjust the brakes without cleaning the rotor and pads from dirt. Cleaning can be done with fine-grained sandpaper. But for this you need to dismantle both parts so that cleaning is done as efficiently as possible.
    • The final is wheel adjustment. It should not be skewed to the side in any way. You can check this simply by placing the bike on a flat surface and performing a visual inspection. If the wheel is tilted to the side, it must be aligned (loosen the eccentric, then adjust the wheel).

    A set of such activities is required. All this can be done quickly enough if you have all the necessary tools (screwdriver, wrenches). Next, we go directly to the processes of adjusting and installing the brakes.

    Setting up mechanical disc brakes on a bicycle

    In cases where one of the elements of the brake system fails, which makes it necessary to replace it, adjustments should be made. There are several sequential steps that will help you cope with this task efficiently and quickly:

    • We check all fixing elements (bolts). If one or more of them are not tightly screwed in, then they lose their functional purpose.
    • We unscrew (not completely, but only in order to loosen the fixation) the lock nut, after which we tighten the cable tension adjuster on the handlebar. We bring the locknut to the previous position (fix). With the adjustment located on the caliper, we perform the same actions. Pull the cable by hand after loosening the lock. When the required tension is reached, screw the retainer back.
    • Dismantle the car.
    • As you know, one of the pads is motionless, and the other is vice versa. It is important to achieve equal distance from the center of the caliper slot for proper rotor positioning. The fixed block is adjusted with a lock nut. By loosening it, you can move the position of the element as much as necessary. The movable block is adjusted by rotating the cable tension adjustment on the caliper. Having reached the desired position, we fix the non-static block.
    • We adjust the caliper. It must be aligned with the rotor.

    That’s all done. It often happens that the rotor still rubs against the block when moving. This is not surprising, because it is not always possible to align the pads themselves exactly. Determine which one is not fixed correctly (just push the bike and see, this will be enough) and adjust the desired one as described in the instructions above. But sometimes the cause of friction is rotor deformation. To do this, it must be aligned. If the flaws are too serious, it is better to replace.

    Adjusting hydraulic disc brakes

    Hydraulic bicycle brakes are positioned as self-adjusting, requiring no intervention or adjustment. But you still need to adjust them from time to time. For example, if you hear strange creaks or rustles during operation, or the factory settings are initially incorrectly set. The following few steps will help you quickly and efficiently set up your hydraulic disc brakes:

    • The bolts fixing the caliper on the adapter must be loosened.
    • Squeeze the brake lever and fix it in this position (if there is no assistant, use the materials at hand: electrical tape, fishing line, wire).
    • We carry out a visual inspection. As with a mechanical system, the rotor should be positioned clearly in the middle of the caliper slot, with pads equidistant from it. If the rotor is not positioned correctly, align it by pressing in the direction where the unevenness is noticed. This will contribute to the even distribution of liquid and fixation in the desired position of the pads and rotor.
    • At this point, the adjustment can be considered complete, and you just have to fix the mounting bolts and return the handle to its original position.

    As with mechanics, hydraulics also have a rotor that performs the same function. Sometimes it can give in to deformation. But this can be eliminated by determining the place of the bend and bending it in the opposite direction. Then the shuffling sounds when driving will stop.

    It is possible to fix problems on a bicycle, even by yourself, without proper experience and training. All you need to do is follow the instructions above. You should not rush through the setup, as this is a delicate process, and you will succeed.!

    How to adjust disc brakes on a bicycle: techniques for hydraulics and mechanics

    Normally, the disc brake stops the wheel as quickly as possible, allowing the force to be dosed on the verge of blocking the rotor. Deviations appear after replacing the cable, pads and overhaul. However, the settings are violated during long-term use, as well as after removing the wheel, for example, to seal the bicycle camera at home. How to avoid the famous rotor shuffling, how to eliminate braking, and, in the end, how to restore the factory braking character. these and other questions are answered by the editorial staff of Autobann magazine.

    Before adjusting: preparing for tuning

    The decision to adjust disc brakes on a mountain or road bike will only be successful if brake diagnostics are included. By the way, the diagnostic measures for hydraulics and mechanics will be different. How hydraulic brakes on a bicycle differ from mechanical ones. we already had a conversation.

    In short, in the hydraulic circuit, both pads push the fluid, acting on the caliper pistons, which results in clear modulation and easy handle travel. And in mechanics, only one friction lining is movable. It is brought to the disc by pulling the cable with the brake lever.

    However, whatever the brake drive is, it is worth checking:

    • Rotor for deformation. For 100% confidence in the flatness of the disc, it is better to unscrew it and put it on a flat surface. A rough estimate can be made while on the bike by rotating the wheel and estimating the distance to both pads through the slot in the caliper. Friction linings must be equidistant from the disc in any position.
    • Brake pad wear and integrity. Remove the pads by removing the cotter pin and assess the residual thickness of the friction material. The surface in contact with the disc must be free of pits and dents.
    • Cleanliness of pads and rotor. The presence of oil traces and accumulations of dirt on their working surfaces is not allowed. To clean them, you can use fine sandpaper (for example, “zero”) and rags soaked in any cleaner (acetone, ammonia.).
    • Wheel hub location in frame / fork dropouts. The bushing should fit freely into the seat and abut against the counter surface of the frame or fork. Distortions in the installation cannot be avoided, but they should be minimal, practically invisible. Micron skewing is immediately audible on the brakes in the form of rotor shuffling. This is why disc brake adjustments are required after re-mounting the wheel.

    It will not be superfluous to look at the state of the drive. With cable disc brakes, check the cable integrity. The end should not be unwoven, and the service life should not exceed 3 years. When replacing the cable, change the shirts. It is not necessary to lubricate it, but if you decide, then do it only with the help of a special lubricant that does not attract dust.

    Nothing should leak on the hydraulics. Weaknesses are connections:

    • Master cylinder. hydraulic line.
    • Brake Lever. Master Cylinder.
    • Brake caliper hose.M

    These joints received a weak status due to the use of cuffs, which dry out over time and leak.

    How to adjust disc mechanical brakes on a mountain bike

    Mechanics are gradually becoming history. Now it can still be seen in the budget line of Russian Stels, Forward and Stern. Considering the price, there is no need to talk about the belonging of brake system parts to such global brands as Shimano and Sram. Usually this is some kind of noname kit that has a minimum of settings.

    Another nail in the list of disadvantages of mechanical disc brakes is that they need adjustment more often. This is because one of the pads is motionless. As it is erased, the distance between it and the disc automatically increases. Meanwhile, fluctuations in the values ​​of this clearance should be insignificant, otherwise the friction linings will wear unevenly, the quality of deceleration suffers.

    Checking the readiness of the system for adjustment

    So, first you need to make sure that:

    • The adapter to which the caliper is attached is well secured to the frame or fork (bolts are tight).
    • The already tested rotor is securely fixed with screws on the hub.
    • The wheel is installed on the bike, the eccentric / nuts are tightened.
    • The lamb for adjusting the cable tension is unscrewed no more than 1.5 turns (located next to the handle or caliper).
    • The cable is fixed on the movable arm of the machine.

    Working with a caliper

    Adjusting mechanical disc brakes on a mountain bike is a two-step process: adjusting the caliper and adjusting the brake lever. To adjust the caliper means to set the pads symmetrically relative to the disc, while the gaps should be minimal.

    When adjusting the caliper, it is important to follow the sequence of actions:

    • Center the clipper. Loosen the bolts securing the caliper to the adapter and, moving the caliper, find its position in which the pads will be equidistant from the disc and completely parallel to it. After centering the machine, pull it to the adapter, observing the rule of uniform tightening: turn one bolt ¼ turn, then the other also ¼, and repeat the described procedure again with the first and second fasteners.
    • Align the clearance between the fixed pad and the disc. Any grade of mechanical disc brake caliper has a bolt or adjusting wheel to move the fixed pad closer / away from the disc. Here the task is to use this adjustment in order to bring the block as close to the rotor as possible, while maintaining the clearance. The easiest way to do this is to move the friction pad close to the disc, but so that it does not bend it, and loosen the bolt a little to get a small gap.
    • Adjust the clearance between the moving shoe and the rotor. On serious kits, a special adjustment is provided for this. a bolt that moves the block regardless of the tension of the cable. On cheap bikes, this setting is combined with the cable tension. The task is to set the same gap as between the fixed friction lining and the disc.
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    Council. Adjust the clearance so that the friction linings grip the disc tightly in the middle of the brake lever travel. To do this, you will need to adjust the tension of the cable using the wing and the position of the fixed shoe (in order to maintain symmetry about the rotor).

    Note. Caliper centering can be skipped if this operation was performed earlier and the wheel was not removed.

    Adjusting the brake lever travel

    This adjustment allows you to adjust the position of the handle when the brake engages. There are no specific recommendations on this matter. Someone is more comfortable for the bike to brake at the slightest pressure on the handle, someone more like the presence of a small idle and a dead grip in the middle of the lever path.

    This adjustment is carried out using a screw located in the brake lever housing. The final adjustment of the severity of the brake seizure is made by the cable tension thumbscrew.

    Attention! After completing all adjustments, check that the pads are equidistant from the rotor. It is possible that the fixed friction lining will need to be adjusted.

    Particular questions on mechanics. How to release the disc brake on a bicycle

    It is enough to screw in the cable tension drum a certain number of turns. If its stroke is not enough, unscrew the nut securing the cable to the caliper and loosen its tension. Option “so-so”. unscrew the handle adjustment bolt.

    Don’t forget about the fixed shoe. Moving away the movable friction lining with a cable, move the static one, so that symmetry with respect to the rotor is maintained.

    How to pull

    Proceed in the reverse order of loosening the cable and you will get the desired result.

    How to make the brakes brake well

    Use good quality pads and center the caliper against the rotor in a timely manner so that the disc bends as little as possible.

    Adjusting hydraulic disc brakes on a bicycle with your own hands

    The hydraulics are called self-adjusting. Where this status came from is unclear. The centering of the pads relative to the disc can also get lost here. And the shuffling of the rotor itself is one of the first complaints from owners of even new bikes.

    In general, setting up hydraulic disc brakes on a bicycle is easier than using cable brakes. But drawing a parallel between adjusting the brake mechanism and cleaning the chain, we can say that working with the brakes is still more difficult than washing the chain at home.

    The main goal is the same: to center the caliper, check if the pads are equidistant from the disc, adjust the handle stroke, if its design allows it. It is necessary to carry out the adjustment step by step:

    • Loosen the bolts securing the caliper to the adapter.
    • Clamp the brake lever to the stop and fix it in this position using the available means (wire, electrical tape.).
    • Check the position of the rotor. It should be located exactly in the center of the caliper slot. If the disc is bent, then the pads are not equidistant from it. The required position of the friction linings and the rotor can be achieved by bending the disc in the opposite direction from the observed bending. Fluid will flow from one piston to the other and the pads will align.
    • Tighten the caliper mounting bolts alternately. Use the 1/4 turn tightening technique found in the Mechanics Set-up Technique.
    • Adjust the position of the handle using the screw on its body.

    Adjusting the brakes on a bicycle

    Adjusting the brakes on a bicycle should be carried out regularly. such maintenance will guarantee the safe operation of the vehicle. There are two main types of brakes on modern bicycles. rim and disc brakes, but disc brakes can be mechanical or hydraulic. The type of brake system installed on a particular bike will determine the process of their maintenance.

    How to check and adjust the brakes

    There are clear instructions for checking and adjusting the brake system of a bicycle. If you adhere to it, then the whole process will take little time and will be effective.

    Procedure for checking and adjusting the brake system of a bicycle:

    • Dry brake test. It is necessary to raise the front wheel and, having unwound it, press the left brake lever. If the wheel comes to a sudden stop during this test, the braking system is in order and no maintenance is required. It is worth considering one nuance. if the brake lever touches the steering wheel, then you just need to pull the cable. The operation of the rear wheel brake system is checked in the same manner. To tension the cable, you need to use curly bolts. just tighten them a little and, if only minor adjustments are required, this will correct the situation. It often happens that such a minimum adjustment does not work. in this case, we look where the end of the cable is on the bike (it is always longer than necessary in advance), unscrew the bolt that holds it. It remains only to tighten part of the cable with pliers and tighten the bolt, applying the possible force.
    • Checking the brake pads. After the brake levers have been tested, the condition of the brake pads should be carefully examined. However, the order of action can be changed. first work with the pads, and then with the handles.

    The brake system setting is different for rim and disc types, since different rotating mechanisms and pads are used.

    Adjusting the rim brakes

    Mountain bikes use a v-brake braking system. using this as an example, we will consider the principles of tuning, since it is also available on other bicycles with rim brakes. The difference can only consist in a different arrangement of bolts and screws that will need to be tightened / tightened.

    Note: it is important to observe three main rules:

    • the pads should be parallel to the rim;
    • the gap between the rim and the block should not be more or less than 1 mm;
    • the pads should be symmetrical in relation to each other.

    How to achieve these guidelines when adjusting rim brakes on a bicycle:

    • You need to find a hex nut. it fixes the pads. To loosen it and set the brake pads in the desired position, you will need to press the brake lever and watch how the shoe touches the rim. By releasing the brake lever, the shoe can be set to the desired position. it moves up, down and at an angle.
    • The distance between the shoe and the rim of the wheel should not be more than 1 mm, although in some models of bicycles there are also 2-3 mm. exact information about a specific vehicle can be obtained either from the instructions for it or on the Internet for technical characteristics. It should be noted that braking of the wheel should occur even with the minimum pressing of the brake lever. That is, if the wheel stops only when the brake lever is fully pressed “all the way”, then this is incorrect.

    After carrying out all the specified work, it is imperative to check the operation of the brake system. First, this is done at idle speed. lift the front wheel up, spin it up and press the handle sharply, then do the same with the rear wheel. The next step is to check the operation of the brake system “in action”. get on the bike and ride 3-5 meters, braking sharply. If the bike has stopped even with a minimal pressure on the brake lever, then the system has been serviced correctly.

    Setting up disc brakes

    As a rule, adjustment of disc brakes consists in periodically tightening the cable. But often you have to replace the pads, however, on disc brakes they wear out longer than on rim brakes. First you need to find out which specific disc brakes are installed on the bike. brake pad adjustments for hydraulic and mechanical systems will differ.

    Experts recommend taking note of the following points:

    • If there are hydraulic disc brakes on the bike, then replacing the pads may not be necessary. they are able to do it on their own. But one caveat should be taken into account. if the hydraulic system is closed, then you will have to adjust the pads in manual mode. for this, special valves are provided.
    • If you have to adjust disc mechanical brakes, then you will need to pull the cable according to the above instructions and check the location of the pads. the distance between them and the disc should be within 0.2-0.4 mm.
    • In order to adjust the pads with disc mechanical brakes, you need to use special bolts. by tightening them, you can see how the pad moves. You need to be especially careful when setting the distance between the pad and the disc. 0.3 mm is too small, it’s easy to make a mistake.

    Be sure to check the operation of the brake system in action after the work is done. ride your bike for a few meters and try to brake. If the cable is too tight, or the pads are too close to the disc, then too sharp braking will occur. this is a “surprise” in which the cyclist begins to move forward, but without his vehicle. Therefore, when driving for a test, you need to be extremely careful and careful, if necessary, the disc brake system is adjusted again taking into account previous errors.

    Adjusting the brake cable on a bicycle

    Braking systems on modern bikes are rim and disc. The difference between the systems lies in the method of braking: the disc is driven by a cable and brakes along the disc fixed on the hub, and the rim. along the rim.

    Most often, to set up the system, it is enough to set the symmetrical arrangement of the brake pads, adjust the lever and tighten the brake cable.

    Brake cable. mechanical design for transferring force between parts relative to randomly changing positions, thanks to this transmission the brake is applied.

    The brake cable for a bicycle has increased strength, consists of a tubular shell and a core moving relative to each other.

    The brake cable looks more reliable than the high-speed cable, because takes on an increased load. Long-term operation stretches the wire and you need constant control of the cable stretch.

    General cable characteristics

    The brake cable for a bicycle is made of wear-resistant thin steel or Teflon threads, evenly woven and covered with a flexible polymer material. Teflon lubricants are used for protection.

    The most reliable version of the brake cable is made of stainless steel. Constant use of the bike provokes contamination of the casing.

    Over time, the strength of each core decreases: separate frayed areas are formed that are prone to tearing, delamination and bending.

    The cable sheath (braid) is produced in several modifications:

    Twisted braid. consists of several pairs of insulated conductors with the addition of metal, each of them is covered with protective plastic, the inner compartment is treated with a lubricant to reduce friction.

    The price category of these braids is low, rarely goes on sale.

    SIS braid. spiral braid, instead of thin metal threads, metal sheets are screwed into the spring, the inner surface is treated with Teflon grease.

    This type of braid is the most common on the market today and is used on brake and speed cables.

    SIS-SP. modernization of a modern rope, it is a parallel threads covered with polymer layers.

    Unlike other types, they do not change the length of the wire, and balance the tension. The interior is lubricated with silicone fluid.

    The braid is considered the most reliable, due to a number of factors the braking system works most accurately.

    Main system functions

    The main parameters responsible for the operation of the braking system are:

      Braking force. how much the brake grips the rim and the maximum amount of force required to stop or lock the bike.

    The pressure ranges of the lever are called brake modulation.

    Wear resistance is an indicator of the expected life of the system, taking into account the observance of operating rules.

    Timely maintenance increases the service life of the braking system.

    apply, brakes, bike

    Checking the reaction of the pads

    When the brake lever is released, the gap between the pads and the disc should not exceed 2 mm on both sides.

    To check the need for adjustment, rotate the brake drum clockwise with the lever pressed and free.

    Before replacing the brake cable on a bicycle, check the operation of the pads:

    • The pads are in close contact with the disc (rim). no adjustment required, the brake conductor is at normal tension.
    • The pads do not reach the disc. the length of the cable is shortened to the required level.

    When pressing the lever, the pads should be in close contact with the disc or rim and stop rotation.

  • The brake cable must be adjusted so that when the lever is released, the wheel rotates freely and does not catch on the pads.
  • When the lever is pressed, the position of the brake pads should not exceed 2 mm, and the lever rests against the handlebar.
  • If the lever is unbalanced and rests against the handle, it is necessary to pull the cable.

    Adjusting the cable length

    Before starting the adjustment, check the brake attachment. In case of slight unbalance, the cable can be adjusted on the handlebars of the bike. just tighten the mount on the brake lever with a shaped bolt.

    • Checking the position of the regulators. they must be screwed in the required position.
    • In the area where the cable is attached to the brake lever, unscrew the fixing bolt with a hex wrench.
    • Unscrew the head screw on the brake lever.
    • Remove the cable from the shirt, check it for integrity, replace if necessary.
    • Thread the cable back into the sheath, check for freedom of movement.
    • Connect the end of the cable with the round attachment to the brake lever and screw the head screw.
    • Set the switch to operating mode.
    • Pull a rubber or aluminum boot on the other end of the cable so that the narrow part is directed towards the cable. Secure the cable with the fixing screw.
    • Tighten the adjustment screws temporarily.
    • Use the pliers to set the optimal level of cable tension: the brake must immediately react to the pressure of the lever.
    • Hexagon adjusts the location of the brake pad relative to the disc or rim at a distance of up to 1 mm between them.
    • After that, the rotation of the drum and the reaction of the pads are checked, which should not touch the disc when the brake is released.
    • When pressing the lever, the brake pads only touch the disc area.
    • Having fixed the cable in the required position, tighten the adjusting screw.
    • Tighten the adjusters on the brake lever to finish.

    After fixing the cable, a small piece of the cord remains, in order to prevent it from getting into the bicycle system, it must be wound or cut, leaving 8 cm in stock.

    Brake adjustment and tuning

    Adjusting the brakes involves more than one tensioned brake cable. An important part in setting up the brake system is replacing and adjusting the brake pads.

    Brake pads are replaced when the surface is erased. Disc brakes wear much slower system than rim brakes.

    For guaranteed reliability in braking, adjustment of mechanical disc brakes begins after tensioning the cable. When tensioning the cable, consider:

    • the distance from the brake pads to the disc is 0.2-0.4 mm;
    • pads are symmetrically located relative to the disc plane.

    To do this, after tensioning the cable, check the distance between the shoe and the disc.

    The pads are adjustable with bolts, to move them to the desired range, tighten and loosen the bolt.

    After checking, a gap is set between the pads and the disc so that they do not touch when the wheel rotates.

    And the most important thing is to make sure that the pads provide normal and timely braking of the bike.

    We also recommend watching a video on adjusting the brakes: