Adjusting the brakes on a bicycle disc mechanical

How to set up and adjust disc brakes on a bicycle

New bicycles are often equipped with rim brakes, or V-brakes, and Soviet bicycles have always been fitted with the only existing caliper brakes. Currently, this is due to the desire to reduce the cost of the design: it is no secret that many cyclists dream of changing the brakes to disc brakes as soon as possible. Often, even when choosing a bike, the costs for changing the brake system are included in the amount.

Below we will show you how to set up disc brakes on your dream bike.

Since the principle of operation of disc brakes is different, it is impossible to adjust them according to the same scheme. Brake disc mechanisms are:

  • mechanical. In this case, the braking energy is transmitted mechanically, using a cable;
  • hydraulic brakes, which have a specially laid hydraulic line, and the braking energy is transmitted by the pressure of the liquid column.

Advantages and disadvantages of mechanical brakes

Mechanical brakes are cheaper, the cables and jackets in which they are located are quite reliable, more affordable than hydraulic mowing lines. It is also important that the repair of a mechanical brake in the case of a bent disc is easy to carry out on your own.

Advantages and disadvantages of hydraulic brakes?

The main advantage is, of course, easier and more comfortable braking due to the soft pressure of the liquid column, the feel of the handle and control over the effort. The hydraulics are more durable with long braking distances, as they are less prone to overheating. Also, these brakes can be adjusted much less often than mechanical.

A significant drawback of liquid-based braking systems is damage (breakthrough) of the hydraulic line, when service is indispensable.

Mechanical disc brake adjustment

It is necessary to adjust the mechanical brakes when the disc shuffles, rubs against the pad, or when the braking has become weak.

We start with the brake lever: squeeze it to failure. If it reaches the fingers, then we begin to limit its free travel: we loosen the lock nut of the machine and turn the regulator out, then tighten the lock nut and check the handle stroke. If you need to unscrew the screw too much, then first loosen the cable tightening. To do this, unscrew the caliper swingarm screw, and after you pull out the cable, turn it back on.

We estimate the gap between the disc and the pads. it is better for the light and against a light background so that it is clearly visible. The illustration on the right clearly shows that the brake machine itself is crooked, and for adjustment we loosen the screws that attach the brake to the fork or adapter.

After that, loosen the screws so that the brake moves freely.

After the caliper has become movable, you need to squeeze out the brake lever again, as at the very beginning, and fix it in this state by tying it to the grip with a strip of fabric or an elastic band. The clipper is then correctly centered on the disc. 5. Only now we tighten the screws securing the brake machine to the adapter or plug. We act strictly one at a time, screwing in the screws equally, at 25% of the turn. After that, release the handle.

After these measures, we get a perfectly uniform mutual position of the disc and pads, without distortions. Setup finished!

Setting up the hydraulic disc brake

The reason for tuning, as always, is resistance to wheel movement, as well as extraneous sounds, for example, creaking and rustling. Do not forget about a simple check: a suspended and spun wheel quickly stops if the pads touch the brake disc.

  • We loosen the bolts on the caliper so that it is movable, then squeeze the brake handle so that the pads are pressed against the rotor
  • Now it is worth checking the position of the valves on the pads so that they stand symmetrically and equally from the rotor.
  • Now you need, without releasing the handle, tighten all the screws on the caliper.
  • We release the handle, check the operation of the mechanism. In the best case, the pads from the disc should be at the thickness of the hair, but not touching it.
  • If the pads are still located at different distances, but at the same time the rotor is ideally placed in the machine, then you can do this: press the disc to the pad that protrudes more strongly and work sharply with the brake handle about 10 times. The unevenness of the valve aligns the pads, and the malfunction is corrected. It is better to do this together: the assistant presses the disc to the block with both hands, and the other squeezes the handle.
  • At the end of the setting, we set the brake lever correctly using the adjusting hexagon. The main thing to remember here is that moving the handle closer to you simultaneously brings the pads closer to the rotor and vice versa.

Let’s say that whatever brakes you choose, you should always be confident in them. And only when all your orders the bike will execute flawlessly, you will get real pleasure.

Adjustment procedure

First of all, you need to prepare the tools, place the bike vertically and secure it in special supports-racks.

Stage four. Setting the brake stiffness (adjusting the brake cable)

At this stage, it is necessary to establish a comfortable and reliable operation of the brake system, depending on the pressure on the brake lever located on the steering wheel. The position of the brake lever was established during the first stage of the system adjustment. Now you need to adjust the tension and, if necessary, the length of the cables.

To do this, simply press the brake lever. The pads should be pressed against the rim with minimal lever action. If necessary, adjust the length of the lever stroke, as it is convenient for you, using the tension nut, which is located on the lever itself. Do not set the stroke large, this is not recommended by all specialists.

All the necessary work has been completed. It remains to check the performance of the brake system, which is necessary.

The need for adjustment and adjustment

The brake is the main means of preventing accidents while driving, their reliability and correct adjustment ensure the safety of the vehicle and the passenger.

First stage. Adjusting the position of the brake levers on the steering wheel

Oddly enough, the first thing that needs to be adjusted is the position of the brake lever on the steering wheel. Further adjustment of the entire brake system will depend on its position. To do this, loosen the handle securing screw for a few turns and set it to a comfortable position. the brake lever should be pressed by the second phalanges of the fingers. Adjust the main position (distance to the handle) of the brake lever to a position convenient for you using the adjustment screw.

Required tools and accessories

Prepare the recommended tools and arrange them so that they are at hand. What is required?

  • The best option is a set of tools for a bicycle, it has everything you need.
  • Screwdrivers. flat and Phillips.
  • Wrench set or special bicycle wrench.
  • Allen key.
  • Wedge spacer for adjusting the clearance (required if you have soft type brake pads without a metal base).
  • Cleaning cloth, cloth to protect against environmental dirt.

All is ready? Are the tools arranged in a convenient order? Is there a cloth under the bike? Is the bike in a comfortable position? Then let’s start!

How to adjust the brakes on a bike

Second phase. Adjusting the brake pads

What needs to be ensured when adjusting the brake pads? Their high-quality fit to the rim. This requires the correct setting of their position relative to the rim and setting the clearance in the inoperative position. The distance between the shoe and the rim should be 1mm. But! If you have soft type pads, then the distance between the front and rear of the pads relative to the rim should differ by 1-1.5 mm. To set the correct clearance in such a case, a wedge-spacer must be used.

  • First, release the pad fastening nut so that it becomes movable.
  • We install a wedge-spacer between the shoe and the rim if you have soft-type pads, if the pads are with a metal base, then we place them parallel to the rim.
  • Rotate the pads so that they are parallel to the top of the tire. They must not protrude beyond the rim or touch the tire.
  • Using washers, we fix the position and clamp the fastening nut.
READ  What makes a road bike different from a mountain bike?

This stage is completed. go to the next.

HOW TO SET UP DISC BRAKES ON A BIKE: INSTRUCTIONS

Setting up disc brakes on a bicycle is not a complicated process. Now see for yourself. Let’s find out how to set up disc brakes on a bicycle yourself without asking for professional help:

  • After fixing the wheel, the caliper should be centered in relation to the rotor by picking up and installing washers of various thicknesses between the mountings on the frame and the caliper, which is included in the kit.
  • The position of the caliper will vary depending on how tight the bolts are. Accordingly, the thickness and number of washers will need to be selected to a fraction of a millimeter.
  • In the case when the rotor is in contact with both pads and friction occurs, the pads must be diluted. To do this, slightly unscrew the special hexagon on the caliper, while the brakes will start to work later.
  • If you want to achieve a shorter brake lever travel, the hex must be screwed in. This may be due to an uneven brake disc that will need to be aligned.
  • During the robot, do not turn the bike over to avoid air entering the system. Also, do not press the handle if there is no oil in the system, and the rotor does not stand between the brake pads, otherwise they will shrink, after which you will have to remove the caliper and open the brake pads with a screwdriver.
  • When all operations are completed, tighten all the bolts again. When checking the robot, we carefully monitor that the brake disc does not warp or shift when pressing the brake lever.

ADJUSTMENT OF THE MECHANICAL DISC BRAKE

  • Since mechanical disc brakes are more sensitive to wheel axle misalignment, bolts or cams should be tightened while sitting on the bike or pressing down on the front shock. Otherwise, in the future, making small jumps, while driving, friction of the rotor against the block may appear.
  • We tighten the adapter tightly. Install the caliper using the instructions above. One of the pads is pushed out by screwing in half a turn of the screw, which adjusts its position.
  • In Hayes brake systems, before performing this operation, you need to unscrew the locking hexagon, and after all the adjustment is completed, return to its original position.
  • Gently press the caliper to the rotor so that its plane coincides with the plane of the fixed pad.
  • Then, alternately tighten the caliper mounting bolts. The actions given above are carried out with the jacket and cable disconnected. Make sure that the plane of the pad does not move relative to the plane of the brake disc.
  • We tighten both hexagons and return the pad adjusting bolt to its original position.
  • After that, we spin the wheel, checking for friction. If there is no friction, the static block can be pushed out slightly with the adjusting bolt and vice versa.
  • We press the movable block, pulling the lever to which the cable is attached. In this case, the rotor will be slightly displaced towards the static block, but slightly!
  • We put the cable and the shirt in the desired position in the lever, the outer block must be pressed. Tighten the corresponding bolt slightly.
  • Gently press the brake lever until the start of the working stroke, from which the cable will be in the desired position in the lever. We tighten the fastening of the cable and check for the presence of friction of the pads. We twist the adjustment on the handle a little, if the shoe rubs and vice versa.

The brakes need to be adjusted so that the adjustment on the handle is minimally unscrewed, therefore, it is better to correct the position of the cable on the caliper lever. So the thread of the handles will be protected from damage.

PADS FOR DISC BRAKE SYSTEMS

On the market, brake pads for disc brakes are metallized (Sintered) and organic (Resin). And these types have both advantages and disadvantages.

Factors such as rider weight, weather and trail conditions, riding style, and rotor size can determine the selection of the appropriate pad composition.

V-BRAKE BRAKE PADS

Disposable. their design consists of a bolt with metal plate spacer washers and a rubber base. They have small lines of operation, but also inexpensive.

Cartridge. their design consists of a bolt with spacer washers of a metal plate and cartridge pads, which are removed by pressing the cotter pins. The rubber base can be replaced.

There are pads for both dry and wet weather. You can determine the degree of wear of the rim brake pads by using special marks (grooves).

Worn pads should be replaced promptly to avoid damage to the rim. Note that both cartridge and disposable pads are suitable for V-brakes. And here the rule applies. the more expensive, the more effective.

HOW TO INSTALL DISC BRAKES ON YOUR BIKE

Before considering how to install disc brakes on a bicycle, let’s understand a little what a hydraulic disc brake system is.

As a rule, the components of a disc hydraulic brake are: a brake lever, a hydraulic line, a rotor (brake disc), a caliper (having reservoirs for brake fluid, under the pressure of which the brake pads come into contact with the rotor), an adapter by means of which the caliper is attached to the bike frame.

Hydraulic disc brakes have a significant performance advantage over mechanical disc brakes. This is due to the fact that the fluid in the hydraulic lines does not change its density, does not compress or deform, in contrast to the mechanical brake cable.

There are open and closed types of hydraulic brakes. The disadvantages of closed ones include the need for adjustment during operation.

A decrease or increase in the volume of brake fluid, for example, due to the influence of temperature, causes the need to adjust the position of the brake pads. Also, brake pads should be adjusted when partial wear occurs.

Open brakes do not have this problem. Since their design provides for an expansion tank filled with brake fluid (usually located at the brake lever). Such brakes do not require adjustments during operation.

The presence of modulation (smooth movement of the handle at the beginning of the stroke and powerful adhesion of the pads to the rotor at the end) is influenced by the number of pistons in the caliper.

When it comes to choosing a particular model, it makes sense to consult with its owner. After all, different riding styles require different braking systems.

Cross country athletes are suitable for smooth and light, in downhill or freeride. powerful and well-controlled, in dirt jumping. with good modulation and, at the same time, as light and powerful as possible.

After the first adjustment of the pads, relative to the brake disc, they themselves take the correct position. This does not apply to single piston models. They require regulation, almost like mechanical ones. For example, Hayes Sole. This model is not considered the best among hydraulic brakes.

The preliminary preparation of open type hydraulic disc brakes is as follows:

  • The brake system must be filled with oil. Shimano brakes use mineral oil. Avid, Hayes, Helix brakes use DOT brake fluid.
  • The process of pumping the brake consists in squeezing out air from the hydraulic lines, cylinders and brake tanks, driving oil through them.
  • Then the caliper is set in such a way that the brake pads do not cling to the rotor.
  • Install disc brakes on a bicycle in the following sequence:
  • Fix the brake levers on the steering wheel and adjust their position using a hexagon;
  • We install the rotor on the hub, put the wheel in place, tighten with bolts or eccentrics;
  • We fasten the adapter firmly, it is possible to use a thread lock;
  • Install the caliper, but do not tighten the hexagons, so that it floats.
  • By pressing the brake lever, check whether the brake pads extend equally when pressed.
  • Clamping the brake disc with pads, the caliper will fall into place. To help him, you should try to spin the wheel back and forth.
  • Tighten the bolts alternately. If the bolts were very loose, you will have to smoothly release again and sharply press the handle.
  • Having pressed the caliper, you need to sharply push the handle 15-30 times to bring the pads to the brake disc at the working distance.
  • With the handle released, we spin the wheel and check if there is any friction of the rotor on any of the pads. If there is, you need to loosen the clipper bolts and slightly move it towards the rubbing block.
  • Then we tighten the bolts back and check if there is a need, we repeat the above steps.

HOW TO INSTALL DISC BRAKES ON A BIKE AND HOW TO ADJUST THEM?

The most important element of any bike is the brakes. Human life and health largely depend on them. In this article, we will talk about what are the brake pads (types), how to install disc brakes on a bicycle and adjust them. adjust.

adjusting, brakes, bicycle, disc, mechanical

BIKE BRAKE PADS, WHAT ARE

Cycling safety, the efficiency of its braking system directly depends on the used brake pads. Consider what are the brake pads for a bicycle, their advantages and disadvantages.

READ  How the brakes work on a bicycle

Depending on the design and price range, the pads are divided into varieties. And first of all, for two main types of brakes: rim (V-brake) and disc.

Setting and adjusting mechanical

Immediately after installing a new brake system, it should be properly adjusted. There can be many reasons for adjustment: friction of the disc on the pads (often accompanied by a typical whistle), too loose brake lever, etc.

adjusting, brakes, bicycle, disc, mechanical
  • All bolts and fasteners are checked. All bolts connecting rotor and hub must be tightly tightened.
  • Loosen the lock nut completely and start tightening it, leaving about 2 turns until it stops. We carry out similar settings on the caliper. Then we unscrew the latch and pull the cable by hand, tightening the latch in place. Caliper Retainer Adjustment
  • Loosen all bolts that secure the device and adapter. If it is difficult to get to this component, then the machine can be completely dismantled, adjusted and installed back.
  • The movable and immovable parts of the block should be adjusted so that they are located exactly relative to each other. All parts of the pad must be at the same distance from the caliper.
  • Likewise with the caliper. it must be precisely aligned with the disc. The mounting bolts should be completely relaxed, set the caliper level and tighten the bolts.
  • Almost always, after all these actions, there is inappropriate friction between the disc and the pads. It is very easy to fix this by completing the mechanical brake adjustment. By adjusting the tension of the cable on the caliper (if the rotor rubs against a moving shoe) or rotating the locknut (in the case of friction against a stationary one), you can achieve not only ideal placement of the rotor relative to the shoe, but also the optimal stroke of the brake lever.

Hydraulic

For those who are afraid of hydraulics, assuming that its design is very complex and borrowed from cars and motorcycles, we immediately inform you that hydraulics are practically no different from disc mechanics, it is simply a slightly more advanced design. Between the handle and the rim is now not a cable, but a hose with a special brake fluid (either DOT4 or mineral fluids).

  • brake lever;
  • brake fluid reservoir, cylinder, piston;
  • hydraulic line;
  • pads;
  • disk.

The master cylinder is the main component that distinguishes the product from the mechanics. It is arranged quite simply. a reservoir with a tight lid, inside which there is a liquid, a piston that creates pressure and sends the liquid through the hydraulic line and a spring that returns the liquid and the handle back.

Hydraulic structure [attention type = yellow] Important! Before starting the procedure for adjusting and adjusting the bicycle brake system for yourself, you should prepare and check all the components. This is a necessary measure, since by tightening the lock nut, you can break the cable or break the disc (if, of course, these nodes are in a faulty condition). [/ Attention]

Setting and adjusting disc brakes on a bicycle

The days when bicycles could be stopped by reverse pedaling are long gone, now two-wheeled vehicles are equipped with both front and rear brakes. To understand how to adjust disc brakes on a bicycle, you should know how they work.

Mechanical

This type of system is simple enough:

  • brake handle;
  • control system equipped with a lock nut;
  • a system that allows you to adjust the brake lever;
  • cable and his shirt;
  • retainer;
  • caliper. tensioner;
  • mechanical brake shoe;
  • disk.

The brake lever should be installed on the steering wheel: the right one, traditionally, serves to brake the rear wheel, and the left one. for the front wheel (unlike motorcycles, in which the opposite is true).

The handle is installed using special clamps, it is she who is the transmitter of the effort from the fingers of the hand to the brake disc. The adjusters help to change the tension of the cable, the lock nut is the main adjustment tool. The more it is twisted, the tighter the cable is and the more sensitive, accordingly, the entire brake system.

In simple terms, the mechanical system is designed in such a way that by pressing the handle, you simply tighten the cable, which twists the caliper and, thereby, presses the pad against the disc, which transfers braking to the rim disc of the wheel.

Mechanical system design

In fact, there are two ways of adjustment. the brake lever adjuster to the grip and the lock nut itself, which is able to tighten and loosen the cable.

[attention type = green] Are you worried about squeaking brakes while driving? Then the article will be useful to you: Why disc brakes squeak and how to fix it. [/ Attention]

Adjustment tips

Always start with the rotor, i.e. the disc. It must be unscrewed from the main bushing and carefully checked for damage, bends and deformations. During braking, this component is often subjected to torsional loads, which can cause it to deform over time. Place the rotor on a flat surface (preferably a mirror or glass) and carefully check that it is fully seated. If areas are observed in which the rotor moves away from the plane, it should be carefully corrected.

The brake pads should also be checked. Here it is important to make sure that there are no impressive chips and cracks. If the wear level of the pad is significant, it should be replaced. This unit is consumable, there is almost always no point in repairing it.

The cables and cable jackets are the most important part of the braking system. Firstly, if you see that some of the strands of the cable are torn, then it is time to change the entire cable, since the place of local damage will become a weak link and, soon, the cable will burst in this place. Bursting the rope with a strong force, i.e. at the moment of quick and complete braking, most often. extreme. Therefore, a damaged cable, more often than not, bursts exactly when it is most needed. Holes in the shirts of the cable are a bad sign, most likely. the cable in this place will, sooner or later, be torn.

adjusting, brakes, bicycle, disc, mechanical

A prime example of a working cable that should be replaced immediately

How To Set Up Cable Disc Brakes On A Bike| Bicycle Maintenance Basics

If the brakes are hydraulic, the hydraulic cutter line must be carefully inspected to ensure there are no leaks and, if necessary, the brake fluid must be replaced.

[attention type = red] Important! All dirt should be removed from the disc and brake pads. Dust and dirt are source of corrosion, and corrosion is a potential weak point. [/ Attention]

Description

Most novice cyclists, seeing a hydraulic or mechanical disc brake in front of them, do not know what to do with it. The whole reason is that many people mistakenly think that the disc type brake is much more complex than the traditional V-brake. However, this is not so. their design is not only similar, but also based on the same principles: the frictional force that stops the rotation of the wheel.

Setting and adjusting hydraulic

With hydraulic systems, not surprisingly, things are somewhat simpler. They are self-adjusting, since instead of a cable, the tension of which can be changed, there is a hydraulic line, where the liquid is, most often, at constant pressure.

Despite this, friction of the pads on the rotor, squeak during braking also occurs. The setup procedure is as follows:

  • Unscrew (not completely, only 1 turn) all the bolts that secure the caliper.
  • Fix the brake handle with a rope or tight bundle (you can use electrical tape, but there are traces after it). Fixing the handle
  • We observe that the rotor is in the center of the caliper clearance. In this case, the brake pads must protrude equally on both sides. If this cannot be done, then you can help yourself by pushing on the rotor from the other side. Pressing leads to an even distribution of the brake fluid between all pistons.
  • We fix the bolts and remove the retainer from the brake handle.

After adjustment, you need to turn the wheel and make sure that there is no friction between the pads and the rotor. If there is friction, but it is interrupted, then the rotor is not parallel to the wheel rim, which means that it is deformed.

How To Adjust Mechanical Disc Brakes On A Bike

Adjusting the braking system at home is easy enough. The main thing is to understand the structure of the system, to carry out all procedures calmly and slowly.

Disc hydraulic brakes

Hydraulics are used to create a wide variety of mechanisms. Its high efficiency is associated primarily with the non-compressibility of the liquid.

The following points are called features:

  • The main advantage lies in the ease of braking and the softness of the system used. In this case, you can feel the pressure force, which increases towards the end of the handle stroke. In comparison with the mechanical type of device, the considered one is characterized by a smoother stroke of the handle. Therefore, there is no need to apply a lot of force for braking.
  • The hydraulics can withstand long-term use. This is due to the fact that it is less prone to overheating. Therefore, braking can take place for a long period even when driving downhill.
  • Device adjustments are carried out much less frequently. That is why you can remove the wheel to clean it or replace it.
READ  Bicycle brake disc grease spilled

The main differences between hydraulic and mechanical disc brakes

The main difference between the 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 an insignificant degree. The photo shows a schematic representation of the device of the hydraulic type of disc brakes.

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

Device and principle of operation

The difference between the principles of operation of disc and mechanical brakes is insignificant. 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 for fixing 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 on it, 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

Adjusting and adjusting disc brakes on a bicycle

Despite the fact that the design is quite simple and reliable, it has to be adjusted from time to time.

How to Align a Mechanical Disc Brake on a Bike

This is done for the following reasons:

  • To ensure long-term performance.
  • High efficiency enhancements.

About Mountain Biking. How To Set Up Mechanical Disc Brakes

Is it so difficult to set up disc brakes on your own, or is it worth using a specialist? Our article will help you adjust the brakes yourself, no worse than a professional bicycle mechanic. The setting is made according to the following points:

Preparation for setting 2. Center the caliper 3. Set the gap to the fixed shoe 4. Set the gap to the movable shoe 5. Tighten the cable fixing bolt 6. Adjust the handle position 7. Fine-tune the fixed brake shoe 8. Check the brakes.

A little theory to start The mount of the disc brake caliper to the frame or fork comes in two standards, PM or IS. The photo shows the fundamental differences: Often, all modern brake calipers come with the PM mounting standard. It is much easier to configure with respect to the location of the disk. If the IS mount on your frame or fork is not a problem, because there are adapters that will help correct the situation: As you can see, there are IS / PM and PM / PM adapters, and if everything is clear with the former, then the latter are needed in order for your frame / forks with PM mount for 160mm rotor, set brakes with 180mm rotor. Important! Read the instructions and check the maximum rotor size allowed by the frame / fork manufacturer. There are also adapters with the designations front or rear. These adapters are designed for the front or rear wheel respectively. Unlabeled adapters are universal. The arrow on the adapter indicates which end of the adapter should be directed upwards, take this into account when installing! With the adapters sorted out, let’s move on to the brakes. A distinctive feature of disc mechanics is that when you press the brake, only one pad in the caliper approaches the rotor, and the second is stationary. In this regard, disc mechanics requires more precise tuning and periodic adjustment of the position of the pads. After a while, the block, which is always in a static position, will be erased and its distance from the disc will increase: When braking, the disc will bend more towards the stationary block, which noticeably affects the quality of braking. You do not need to readjust the brakes to remedy this disadvantage. The red in / out wheel will help you adjust the position of the static pad. If there is no such a twist on the brakes, then there is definitely an adjusting bolt for a hexagon or Torx (as is the case with the BB7). But back to our setup

  • Preparing to set up

To ensure that your adjustments do not get lost, make sure that the adapter is well screwed to the frame / fork, the rotor is even and well screwed to the hub, and the wheel is securely fixed in the frame / fork.

  • Centering the caliper

After you have made sure that all connections are secure, the first step is to align the caliper exactly centered in relation to the disc. To do this, loosen the bolts securing the caliper to the adapter and center the rotor relative to the sides of the caliper. The rotor should be exactly in the middle, then the pads will wear evenly. Lock the caliper. Important! If your caliper is centered, you do not need to repeat this procedure.!

  • We expose the gap to the fixed block

In order to set the clearance to the fixed brake shoe using the red adjustment or Torx wrench, bring the fixed shoe as close to the surface of the rotor as possible, but not so that it bends under the load of the shoe, but only slightly touches it. By turning the adjustment clockwise, you move the shoe closer to the rotor, and counterclockwise you move the shoe away.

  • We expose the gap to the movable block

First, loosen the bolt securing the cable in the caliper (highlighted in green) so that you can move the pad approach lever with your hands and the cable does not interfere with you. Now rotate clockwise or counterclockwise to adjust the red gooseneck adjustment so that the proximity lever grips the rotor between the pads somewhere in the middle of its travel. Important! Not all mechanical brakes have a sliding shoe adjustment. If it is not there, just set the approach lever so that the rotor is clamped somewhere in the middle of the brake lever travel.

  • We tighten the cable fixing bolt

Using pliers, tighten the cable and tighten the cable fixing bolt.

  • Adjusting the handle position

Use the black twist on the brake lever to set a comfortable distance from the grip to the handlebars at which your brake will be applied. By unscrewing the twist, you move the brake lever away from the grip when the brake engages. If you are unable to get a comfortable position with this twist, you should readjust the brake using step 5!

  • Fine adjustment of a fixed brake shoe

Return to step 3 and unscrew the adjustment of the position of the fixed block by half a turn so that the rotor does not catch it when rotating.

  • Checking the brakes

Check if everything suits you in braking. To do this, do not fly to the nearest Trail, you can simply ride right next to the brake setting. If everything suits you, congratulations, you did it! Was it that hard?

Things to do before adjusting the brakes?

The brake system is adjusted periodically. Due to this, a long service life as well as high efficiency can be ensured.

The main recommendations are the following:

  • To begin with, the state of the main elements of the system is checked. This recommendation is due to the fact that even minor damage results in poor performance.
  • All damaged items must be replaced. An example is a frayed cable or a damaged hydraulic line. Do not forget that over time, some elements may wear out.

If the brake system does not have serious defects, then you can start adjusting it.

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 sharpness of the seizure of the brake 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 have to be readjusted.