How to disconnect a chain on a bicycle with a lock

How to dismantle different types of chains

All instructions on how to remove the chain from the bike describe the same procedure. To complete, you need a standard set of tools:

  • key for unscrewing the rear wheel;
  • pliers, needed to hold the pin and segments;
  • squeeze. a special device for pressing out pins.

Replacing a damaged, slack, ripped or bouncing blade requires the chain to be removed. There are two ways to complete the procedure. The best option depends on the type of link attachment.

How to remove chain without special tool/tagalog-tutorial

disconnect, chain, bicycle, lock

Wrench for unscrewing the rear wheel


Some chains are removed by hand altogether. How this is done is shown in this video.

Lock and solid chain

The locking chain is equipped with a special clamping device. It is not difficult to unhook and put on it. you just need to disconnect the lock. To find it, we carefully examine the chain on both sides and find a detachable link. In principle, it will not be difficult to find it on a clean chain: a tick is put on top, which fixes the link and does not allow it to move apart. Also, the manufacturer’s inscription is usually embossed on the key link. If you cannot find the lock for a long time, then either the chain is dirty, or it is lockless, or solid.

A bicycle chain without a lock simply cannot be disconnected: all the links on it look the same, however, and are hooked to each other too. This is very inconvenient when cleaning, for example, it is necessary to carry out a “general cleaning” in a solvent. In the case of the keylock, everything is simple. he stole it and put it in kerosene. Solid bike chain, even taken off the stars, will remain hanging on the frame.

In terms of removal, a chain with a lock is, of course, more convenient than its counterpart. However, for some reason, the fastening may loosen: the tick fly off, and the link itself can be disengaged. There are no such weak points on bicycle chains without locks, and if it is torn, then the point is solely in its quality.

Removing the chain without a lock using a chain release

Here, everything is not as simple as in the previous case, although the same is not very difficult.

In this case, a special tool called chain squeezing (cycling) helps. They are available as a standalone or in the form of a bicycle multitool, which is much more convenient when traveling or at home.

Fitting the chain to the bike

To put the chain on the singlespeed, it is enough to hang it on both stars, press in the pin or click the lock. With high-speed bikes it will be a little more difficult:

  • Fix switches to small stars.
  • With regard to the location of the tensioning rollers, put the chain on the stars.
  • Combine links.
  • Clamp the chain and press in the axle. If the bike chain is with a lock, we do without squeezing.

After the installation is completed, it is necessary to check the course of the chain: rotate the pedals several times. If no sagging or obstruction is observed during twisting, then the chain is of the optimal length and is installed correctly.

Every owner of a two-wheeled horse will be able to cope with the removal and installation of a bicycle chain. An uncomplicated and simple procedure will not take much time, but it will perfectly help on further trips!

How to replace a chain on a bicycle?

The chain is the key element of the bike’s transmission assembly. Sequentially passing through the teeth of the drive sprockets, it transmits torque to the rear wheel, thanks to which the bike rides. In the process of movement, the chain mechanism is subjected to dynamic loads, which over time leads to its wear.

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On singlespeeds, as a rule, the chain is designed for the entire life of its operation: when moving along the stars, it walks smoothly and straight, without deviations. Chains are more complicated on multi-speed bicycles: there is no right angle between the front and rear sprockets, which is why it is always at an angle relative to the frame. The stresses on the chain mechanism increase several times compared to parallel transmission, which leads to periodic wear. To avoid damage to the entire transmission unit caused by wear of the chain, it must be replaced in time.

Not only do the “speed” chains need to be removed, they are often removed from single-speed bikes for periodic repairs or cleaning. How to remove the chain from the bike and put it back, we will tell you in this article.

Advantages and disadvantages

  • The design is easy to use.
  • The lock allows you to quickly assemble and disassemble the element.
  • The chain can be easily removed and reinstalled.
  • Some locks can fit different bike models, thereby saving human costs.
  • Low strength. This is due to the ability to disassemble, which makes the mount unreliable.
  • Risk of breaking the chain where the lock is installed.

When to shoot

Failure of the chain assembly of a bicycle with speeds can be detected even before serious problems arise. For this, it is necessary to estimate the number of kilometers traveled. The following factors also affect the condition of the part:

  • the correct choice of a suitable gear;
  • pedal loads;
  • the quality of road surfaces;
  • cycling speed.

The first signs of a malfunction are unusual sounds, provided that the lubrication was made on time, as well as the occurrence of difficulties when changing gears. To assess the condition of the chain, bend it away from the large sprocket. If the part freely moves away from 3 or more teeth, it is urgent to replace it. You will have to remove the element for other reasons:

  • full cleaning, it is necessary to carry out systematically to remove accumulated abrasive and grease;
  • mechanical damage, replacement of broken links;
  • changing the length of the blade with new combinations of sprockets on a mountain bike;
  • replacement of a failed element.

Any bike chain will wear out over time. You can determine the degree of damage by the condition of the canvas. If it is stretched, the displacement of the cells will cause serious damage to the sprockets. It is quite difficult to detect wear by eye, so it is better to measure the length of the part. Standard indicator. 24 links.

There is an informative method for determining the level of wear. The bike chain must be removed and measured. 30.5 cm. ideal, 30.6-30.8 cm. medium, more than 30.8 cm. damage to links, sprocket and the entire transmission.

A chain malfunction is indicated by unusual sounds, provided that the lubrication was made on time, as well as the occurrence of difficulties when shifting gears
Stretched chain bar and misalignment of the meshes will cause serious damage to the sprockets.
To assess the condition of the chain, it is necessary to bend it away from the large sprocket: urgent replacement is required if the part freely moves away from 3 or more teeth

Advantages and disadvantages

  • The design is easy to use.
  • The lock allows you to quickly assemble and disassemble the element.
  • The chain can be easily removed and reinstalled.
  • Some locks can fit different bike models, thereby saving human costs.
  • Low strength. This is due to the ability to disassemble, which makes the mount unreliable.
  • Risk of breaking the chain where the lock is installed.

Bicycle chain with a lock. features, design

When choosing a lock, first of all, pay attention to the number of speed modes. Experts allow you to choose the same lock for the number of speeds from 6 to 8, which greatly simplifies the task.

Owners of multiple bicycles with the same number of speeds do not need to buy multiple locks. This factor also applies to chain manufacturers. As long as the speed numbers are the same, it doesn’t matter if the model is different, as the lock will still work. This is due to the fact that, despite the brand of the bike, the chains are usually set similar.

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The peculiarity of the structure of the structure lies in the presence of easily detachable links, which consist of several plates. Due to the simple structure of the castle, it will not be difficult to open the links.

When buying such an element, you should pay attention to the box, on which the manufacturer often indicates all the necessary information that will be useful during operation. It is important to choose the lock in accordance with the number of speed modes of the bike.

Types of bicycle chain locks, their design and installation

During the operation of the bicycle, various situations can happen to it that require human intervention. One of the necessities is to disconnect the chains to correct the bike’s performance.

There are a number of possibilities that help to accomplish this task, among which the most popular solution is the installation of locks on a bicycle chain. That is why it is necessary to understand and understand the design of the chain and lock in order to easily separate the parts.

With symmetrical details

A part of a symmetrical type has a simple shape and structure. For its implementation, two parts of the perfect identical appearance are taken. The main components are cheeks and pins.

The pins are made with an annular groove, which is connected to the hole of the second part. When tensioning the chain, this design shows excellent reliability results.

In order to open it, it is necessary to move the pins towards each other. When they match, the bike chain will open.

Types of bicycle chain locks, how to remove and install locks

Before installing a new lock, you need to make sure that there is no one on the bike that came with the purchase.

It is not difficult to locate the locking element, it usually has the manufacturer’s marking. Each driver decides for himself whether it is necessary to install this structure. Experts recommend hanging a lock if the bike owner plans to frequently work with the links, remove them, connect and disconnect.

Installation involves a process in which you must first remove some of the links so that there is room for the lock:

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  • Removing links is best done with a squeeze tool, this tool allows you to carry out the process neatly without damaging the chain.
  • The removed links can be thrown away, as the locking element will go in their place.
  • After completing all the points, the structure should be fixed. To do this, stretch the chain until a click is heard.
  • If it is necessary to remove the installed structure, bend the chain and slide the hole until it opens.

It should be remembered that often working with bicycle parts requires additional strength and tools, so you should not rely on your hands. For long-term operation and safe use, there is no need to put the lock from the old chain.

With spring cheek

This design has a slightly modified type. It consists of parts of different types.

The first part looks like a cheek into which the pins are pressed. The second part is made of springy steel. There is a hole in the cheek for the set diameter of the groove, as well as an additional hole for the pin size.

The opening process is simple. This requires the chain to bend slightly. Bend it until the pin is opposite the hole of its diameter. Then, the cheek is removed from the connection with the pin and turned, at this moment the circuit is opened. In some cases, you can remove the cheek from the second pin.

Closing in this case is also carried out in the reverse order. Chain links are thrown over the pins. A spring-loaded cheek is placed on one of the pins and passed into the pin’s annular hole. At this point, the chain should be slightly bent and the second pin should be inserted. During chain tension, the elongated hole goes into the annular groove and fixes the structure.

The chain is one of the most important parts of any bike’s drivetrain. Modern bikes are designed for different conditions of use, so in some cases the main parts fail. Chain performance affects the shift process and the state of the stars.

Removing the bike chain

Sometimes there are times when you just need to remove the bike chain. This, for example, if it is stretched and you need to dismantle one or more links. Or you just decided to thoroughly clean it of dirt (which we will do today). And it’s not difficult if she has a special removable chain lock, but here’s what to do with a chain that does not have one? Today we will look at how to remove the chain using an example.

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Required tools

Experts in the field of various life hacks and those who started cycling back in Soviet times, in order to break the chain, recommend using a stone and a nail. But, since progress does not stand still, a special tool has long been created for this. a chaintool. It resembles a small vise without a bed.

Practice shows that pomace in “multitools” (especially in cheap ones) withstand a maximum of 3-5 applications. Therefore, for a multi-day hike in terrain with difficult terrain, it is better to have a high-quality tool made of high-strength steel in your backpack.

The mechanism of action of the pomace is extremely simple. The existing stop does not allow the plates of the links on the chain to deform and bend in the process of pushing out the connecting pin (pin). The swivel screw pushes it out without significant force.

In addition to the main tool, in order to shorten the bicycle chain, you will need rags, kerosene and any lubricant (for example, WD-40). Before starting work, it is necessary to thoroughly clean the gearshift mechanism. “Non-professional” devices. a hammer, nuts, nails and so on are used only as a last resort.


We will now consider how to use the chain squeeze.

First, we select the link that we will disassemble. If the chain is being disassembled for the first time, it can be any link, but it is better to look for the link with which the chain was assembled at the factory when assembling the bicycle. Usually this pin stands out from the rest. If the chain has already been disassembled in this way, then it is better to choose a different link, and not what was the last time. This is due to the fact that the squeeze loosens the pin a little.

Now we just slowly turn the handle, squeezing out the pin. And here’s the most important thing: constantly check that the pin does not pop out completely. If it pops out, it is very difficult to insert it back (even using all the possibilities of the great and powerful Russian language).

Another small point: be careful not to lose the video from the link in which the pin was squeezed out. Otherwise, there will be problems later.

After washing and lubricating, the chain is assembled in the reverse order. You connect the links, insert the pin, not forgetting about the roller, and press the pin back with the squeeze screw.

The chain was placed on a nut or so that the axle was in a narrow gap between the stones on the curb (so that it had a place to squeeze out), the nail was placed against the axle and, slowly tapping on it with a hammer or just another stone, knocked out the pin. The main thing was not to knock out the pin completely. The chain was also assembled back.

Soviet single-speed chains have withstood this treatment, but are unlikely to withstand modern multi-speed chains. They are too gentle for that. You can simply bend the chain link. So you better use a chain wringer for all this work.

We clean the chain before removing

We put the chain on the middle stars (for example, 2. 5). We take an old dirty rag. Wrap the chain around and pedal back. It will not be possible to achieve perfect cleaning, because part of the oil and dirt is on the stars and, when rotating, it again adheres to the chain. Therefore, we stop pedaling and clear a small gap (10-20 cm) between the stars. This is where we will disconnect the bike chain.

Why disassemble the chain

Only the chain, tensioned without slack or distortion, ensures efficient transmission of torque from the pedals to the rear bicycle axle. The need to disassemble and shorten it may be due to the following reasons: