How to apply the brakes on a speed bike rear

How to apply the brakes on a speed bike. Velobaggio

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Modern bicycles are equipped with disc or rim brake systems. The most common problems requiring adjustment are the adjustment of the position of the brake pads, and the gap between them and the braking surface. The brakes are adjusted on the pads themselves, and by adjusting the brake lever.

Adjusting the brake on a bicycle is a rather rare procedure, which is necessary in rare cases, mainly due to wear or damage to the bicycle components. So, for example, if the rim is damaged, the pads will cling to the disc or rim, and when the pads are worn out, the distance to the disc will become greater, which will not allow you to effectively use the brake. It is important to understand that well-adjusted brakes are the key to safe driving.

Installing disc brakes on your bike

When the brakes on the bike are already badly worn out, or they are not satisfactory in their characteristics, it is not necessary to buy a new bike. With sufficient desire and opportunities, the installation of better brakes is a completely solvable task. Of course, it will be much better to solve it if the design of the bike allows it to be done without significant costs.

If the current braking system is in good condition, you can choose an option that will save on brake levers and cables. If the condition of the brakes is in doubt, it would be better to replace all elements of the system with new ones. In the case of installing hydraulics, without options, you will have to replace the entire system as a whole, and additionally solve the issue of laying hydraulic lines. Old brakes should not be thrown away, especially if the bike is being used for long journeys. In the event of a breakdown, they can do a good job.

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Checking the tension of the cable

Insufficient cable tension is characterized by the position of the brake lever at which braking begins. You can check this on the go, or by lifting the wheel, untwisting it and pressing the brake. The sooner the wheels stop when pressed, the faster the bike can stop.

If during braking it is possible to press the brake lever more than half the distance to the steering wheel without much effort, you must tighten the brake cable. A slight cable tension can be tightened on the brake lever using a shaped bolt.

If the handle is easy to push all the way to the handlebars, pull the cable from the side of the brakes themselves. The cable is attached to the brake with a special screw. To tension the cable, it is necessary to unscrew this screw, tighten the cable with pliers, and fix it by tightening the adjusting screw tightly. As a rule, when fixing the cable, a small tail remains, which should not be too long. To prevent the cable from getting into the wheels or other bicycle systems, the excess part of the cable must be wound or cut off, leaving a small margin, not exceeding a few centimeters.

Adjusting the brake pads

A braking system using disc brakes is structurally different from a rim brake system, therefore, setting the pads for both systems should be considered separately.

Removing the brakes

  • We open the brakes by pulling the cable jacket out of the holder under force.
  • Unscrew the screw fastening to the frame.
  • Removing the brakes.
  • We unscrew the pads fixing screw, if work with pads is required.
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It is very important not to lose the correct sequence of washers in the last step. They come in pairs. convex and concave. Further adjustment depends on their installation.

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 push 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 have to be readjusted.

Working with the 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 align the pads symmetrically with respect 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 such a 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 gap 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 rolling block 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.

Advice. 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 a wing and the position of the fixed shoe (in order to maintain symmetry about the rotor).

For your information. Caliper centering can be skipped if this operation has been performed before and the wheel has not been removed.

Symptoms of problems

How do I know if my bike needs a brake adjustment? There are several signs:

  • You bought a bike. new mechanisms require running-in and constant, in several approaches after a short run, adjustment.
  • You have not used your bike for more than a month. especially if it was cold storage, maintenance of the pads and the brake mechanism is imperative.
  • “New” sounds are heard from the mechanism: buzzing at speed, periodic knocks, whistles, squeaks. problems with mechanical parts or a block.
  • The brakes began to react poorly to effort, that is, they only work after a certain stroke, do not immediately “release”, etc a clear sign of problems with the cables or hydraulics.
  • Visual damage to the cables or elements of the brake mechanism. they can continue to work, but it is simply necessary to adjust after, for example, an impact.

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.

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Another nail in the list of disadvantages of mechanical disc brakes is that they need to be adjusted 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 gap should be insignificant, otherwise the friction linings will wear unevenly, the quality of deceleration suffers.

Adjusting the brakes is rarely required, but you can save a lot on it by doing everything yourself. In addition, it is not difficult even for sporty disc types with hydraulics. The main thing is to be careful and observe the golden rule. you should not save on your health, which is very easy to lose using faulty or poorly adjusted brakes.

How to set up the brakes on a bike?

Bicycle brake adjustments are generally not required frequently. The standard procedure is carried out before the first ride, when the question arises. how to adjust the brakes on a bicycle. Next, you just need to keep the equipment in working order.

Still, there are situations when you need to re-adjust the brakes for a safe ride.

Adjustment is usually associated with ensuring the required distance between the brake pads, their symmetrical position in relation to each other. On a regular bike, you can pull up the cable and make some adjustments just like applying the brakes on a speed bike. The difference may be in the degree of tightening and the number of bolts.

The work of adjusting the brake system of a bicycle depends on the type of brakes. They are:

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How to set up rear brakes on a bike?

You need to get to work as soon as it becomes clear that there are problems with the bike. Therefore, first you need to check the brakes. To do this, you should:

  • raise the front wheel of the bicycle, untwist it and press the brake lever, if the wheel is working properly, the wheel will immediately stop (it is important to pay attention to whether the brake lever is touching the handlebar, otherwise you will have to pull the cable);
  • now we carry out the same manipulations with the rear wheel;
  • if everything is in order with the brake lever and the cable is tightened, then you should proceed to checking the brake pads (disc brakes are more complicated than rim brakes, due to the difference between the pads and rotating parts);
  • if it is a mountain bike, then it uses a new braking system v-brake and needs to be adjusted on it.

You don’t need to know how to apply the brakes on a particular bike. On different bicycles, the location of the bolts and screws may differ, otherwise the principle of operation is identical.

What to look for first when setting up rear brakes on a bike?

The main thing is to check the placement of the pads parallel to the rim. Next, we do the following work.

You need to find a hex nut in order to loosen the block. Next, you should press the brake. check how tightly and in what place the rim touches. The pads can be extended, displaced, moved, and then the bolts can be tightened.

It is necessary to adjust the distance between each block and the rim separately so that they are at the same distance of about 1-3 mm. Although a lot depends on the specific bike model. Now it is enough to slightly press the handle to start braking.

After adjusting the brakes, be sure to check their action on the go. Therefore, you need to ride a bicycle for several tens of meters, alternately gaining and decelerating speed, changing a smooth and abrupt transition to braking. Should work one hundred percent.

If, while pressing the brakes, the wheel continues to rotate for a long time, you should re-check the systems, fasteners, the distance between the pads or discs. The service brake is in good working order immediately.

Adjusting the braking system of the bike allows you to eliminate any blemishes. But sometimes you have to deal with not only tuning, but also replacing the pads if the brakes on the bike do not work well. precisely, pad replacement is required due to erasure. over, the rim type of pads wears out faster than the disc.

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With open hydraulics, the brake system automatically adjusts the work of the pads. Having installed a closed hydraulic brake system on your bike, all adjustments will have to be made for it (you will need special valves).

After driving on a smooth road, you can determine how quickly the braking system responds to a braking command. You can check the equipment on different parts of the road. ups, downs, irregularities. so that there is no doubt about the serviceability of the equipment.

Adjusting the rim brakes

Adjustment of rim brakes (almost all modern ones are of the V-Brake type) is very simple and does not require any special conditions. over, due to the “openness” of the mechanism, maintenance usually consists not in working with the structure, but in replacing the pads.

How to adjust rim and disc brakes on a bicycle

Brakes, especially disc brakes, need to be adjusted very rarely. For rim types this is once a season, for other options up to once every few years. Nevertheless, after a long downtime or repair, as well as when symptoms of incorrect operation of the brake system appear, adjustment is simply necessary.

Adjusting the position and inclination of the shoe

After loosening or completely unscrewing the pad fixing screws, they can be moved in any direction.

This adjustment should be done without removing the wheels in order to clearly position the shoe. So, how should the block stand:

  • The shoe should be at the level of the rim, not going beyond it by a millimeter.
  • When checking for clearance from either side, the block must be in both the braking position and in the open position parallel to the rim.
  • When scrolling the wheel, the block must be pressed exactly along the rotation vector. deviation from it will damage the brakes.

After installing the pads in accordance with these conditions, the screws are tightened, the brakes are checked.

Symptoms of problems

How do I know if my bike needs a brake adjustment? There are several signs:

  • You bought a bike. new mechanisms require running-in and constant, in several approaches after a short run, adjustment.
  • You have not used your bike for more than a month. especially if it was cold storage, maintenance of the pads and the brake mechanism is imperative.
  • “New” sounds are heard from the mechanism: buzzing at speed, periodic knocks, whistles, squeaks. problems with mechanical parts or a block.
  • The brakes began to react poorly to effort, that is, they only work after a certain stroke, do not immediately “release”, etc a clear sign of problems with the cables or hydraulics.
  • Visual damage to the cables or elements of the brake mechanism. they can continue to work, but it is simply necessary to adjust after, for example, an impact.

Renewal and replacement of pads

The most common service is replacing or renewing a bicycle brake pad.

Updates are usually sufficient after long-term storage. The surface of the rim and pads is degreased, and, depending on the remaining thickness of the rubber, its top layer is removed, as it “dunks” from frost during storage, as well as from heating during active braking.

Pads are replaced less often. After unscrewing the screw, the old shoe is pryed off and removed, and a new one is installed in its place. Here, accuracy is required when choosing, since there is no single standard, and the groove for the screw may not fit, and the shoe itself on the site may not lie. Fortunately, any sizing problem is dealt with with a sharp knife. In the case of cartridge pads, undercutting will most likely not help, but such cases are quite rare.