How to connect a bike chain with a lock

With a lock

To remove the chain, you need to open the lock. There are several types of locks, but the processes for opening them are similar, for this you need to close the axles of the lock and remove the cover.

connect, bike, chain, lock

If you have problems opening the locks, you can use tools such as special pliers to open locks.

How to install a chain lock with 2 symmetrical pieces

Putting the lock is very simple. It does not need to be snapped into place, since we will do this as soon as we press the pedal for the first time. But you can try to pull the chain in different directions to hear the click of the lock. The main thing is to make sure that all parts of the castle fit into each other.

When to change your bike chain?

A good lubrication for the bicycle chain can significantly increase the life of the entire system responsible for movement. At the same time, it is necessary to be able to notice the moments when it begins to need service or repair.

Excessive wear on the bike chain not only causes permanent discomfort while riding, but also causes active deformation of the sprockets. If you leave a worn-out chain unattended for a long time, this is guaranteed to lead to the need to replace a whole set of expensive mechanisms.

In order to assess its condition as objectively as possible, it is necessary to look not at the mileage, but first of all to measure the length of all its links. Normal chain length is approximately 305 mm. The reason for its replacement is its stretching up to 308 mm or more.

How to change the chain?

There are two types of chains: with a lock and with a pin. The first case is not of particular interest, since such chains are used on children’s bicycles and replacing them is not difficult, for this you only need a screwdriver.

The situation is more interesting with the second type of chains. a chain with a pin. First of all, you need a special tool. chain squeezing. It is highly discouraged to remove such a chain using available tools. The chain extractor is used to connect and connect the links of the bicycle chain. The sequence of actions when working with this tool is as follows:

How to remove a chain from a bicycle for replacement?

When the old chain is physically and morally obsolete, not satisfying the bike owner with the operating conditions, it must be urgently replaced. As a replacement, a chain with the same number of links should be selected. However, its length should be slightly less.

How to remove the chain from the bike correctly? To do this, you need to use a special tool. squeeze. With the squeeze in front of any of the rollers, tighten the screw in such a way as to push the pin out. Next, you should loosen the tool, and then remove. In a similar way, using a squeeze, the chain is removed for regular scheduled cleaning.

Experienced cyclists often use special locks for quick maintenance, removal and cleaning of the old chain. The use of this device makes it possible to instantly remove it for replacement. However, some bike owners have biases about the effectiveness and reliability of the lock. Indeed, if it is present, the risk of a sudden break in the circuit increases. It is not known for certain how often chains break when there is a lock, but still, without it, the mechanism looks more reliable.

How to change the chain on a bicycle

Bicycle chain repair

The most common defect in a bicycle chain is its sagging due to an increase in length. Of course, you can remove the stretched bike chain and replace it with a new one, but you can try and restore it. Due to the loosening of the axles, the bicycle chain expands in the transverse and longitudinal directions. It is impossible to eliminate the transverse expansion, but with the longitudinal expansion, it is possible that something will work out.

It is necessary to remove excess links in such a way that the bicycle chain passes freely, without excessive tension, along the large sprocket. Also use squeeze when shortening.

It is important here not to overdo it by pulling out extra links.

The installation of the so-called stabilizers on the bicycle, which does not allow the chain to fly off the sprocket when riding, helps. Of course, if you put a pacifier as a temporary measure is a good solution, but you must not forget about replacing the bike chain.

Bicycle chain lock

History of appearance and development

If the first models of bikes were more like “balance bikes”, then a full-fledged design of a bicycle with a chain drive appeared only in the 1870s, and took a leading place only by the end of the 19th century, when hardened steel appeared. Before that, the materials were too unreliable, and the production conditions did not allow the formation of links that would work for a long time under a large and unstable load.

There were experiments with direct drive to wheels using gears, the possibilities of a belt drive were studied for a long time. However, by the beginning of the 20th century, today’s standard “took its toll”, and almost all manufactured bicycles differed in design from modern ones only in the absence of gears. Gears appeared in the 1950s on sports bicycles, and only 30 years later conquered the mass market.

Chains are used everywhere and not only in bicycles. Different sizes, types, shapes, number of belts. progress does not stand still, and huge factories are engaged in their manufacture. which, of course, benefits the quality and cost of this bicycle part.

Chain types

The standards distinguish the following types of bicycle chains for their general design:

  • roller. small rollers inside the links. This type is wear-resistant, but rarely used, since it is expensive to manufacture;
  • sleeve. similar to roller, but instead of a separate part, a straight sleeve passes through the link. The overwhelming majority of bicycle chains are of this type;
  • cogged. used only in experimental bikes, came from industrial production.

In addition, by the method of connecting the links:

  • ordinary bicycle chain. the links can be connected through one, alternately alternating. For regular cyclists, this is the best choice;
  • halflink (half link, half link). a sequence of the same type of non-alternating half-links that enter one into the other. The bicycle chain is resistant to dynamic damage and maintainable, but with prolonged use it quickly stretches, because the number of “weakened” elements is twice as large as that of a regular one. In such chains, a lock is almost always placed.
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Many manufacturers introduce their own unique release links (lock) that allow you to quickly remove the chain. How many links of such a plan are, it is difficult to say, each manufacturer promotes its own standard, new ones often appear. There is no established classification.

If the chain length can be easily changed by adding and removing links, do not forget that there are several types of chains that differ in width.
For bicycles, the following division has become the standard:

  • 7-8 speeds. wide enough, standard;
  • At 9 speeds. already, usually supplied for specific assemblies, can be used (with some reservations) for 7-8;
  • 10 speed. narrow chains, cannot be used with other set of sprockets.

Using the wrong chain combination is simply dangerous. For example, a 7-star chain will get stuck in an expensive 10-speed derailleur. She will cling to the stars on the drum, which will interfere with normal movement and instantly kill the transmission.

Determination of wear

Many people define wear by eye. Unfortunately, the “eye” of almost any person is not able to isolate catastrophic changes for the state of the chain and stars.

Very often, the marker is the length of 24 links of a standard chain. The length of this segment should be 12 inches or 304.8 millimeters. A small table for understanding the state:

Elongation, mm % States
Up to 1.5 1.0 Fatal wear, requires replacement of the entire transmission along with the cassette

“By eye”, if there are no measuring instruments nearby, you can determine the stretch by attaching a chain to the largest star. Extra millimeters will be noticeable.

The appearance and construction of the chain

First, let’s look at where the chain came from and how it works.

Three chains

You can determine when to change the chain in different ways. Many people ride the same set with stars for 5-10 thousand kilometers, after which they completely change the transmission. Others buy a new bike chain every 1000 km to keep the stars in good condition.

The golden mean between these methods is the “rule of three chains”. You should choose 3 identical models, which are worth changing every 500 kilometers, so that the wear is evenly distributed over them. Fortunately, it is very easy to remove the chain using a modern lock. This method allows not only to save all the transmission parts, but also to “run” many thousands of kilometers without any problems.

How to choose the right bike chain?

When it comes to modern chains, many argue that their production has gone badly wrong. The relocation of factories to China meant that the bike chain had to be changed every season, if not more often. However, such statements come from little knowledge.

The spare parts produced now are significantly superior to their Soviet counterparts, and timely maintenance of the bike increases the service life of the parts. The “secret” is that on a high-speed bike, the cogs now have teeth just barely halfway up the chain so that it can jump on the “command” of the switch, which, along with complex speed combinations, leads to severe chain distortions. And working with distortions damages the entire transmission.

Chain wear

The main concern for a cyclist is wear and tear. As already mentioned, modern mountain bikes are very demanding on reliability and wear of the bicycle chain is inevitable. The main thing is to prevent serious wear with proper care, to adjust all elements of the transmission. Read about how to do it yourself in a separate article on cleaning and lubricating the chain. Correctly installing the chain in place and adjusting it is also usually not difficult.

Some accessories are also used to reduce wear, such as a chain damper or an external chain guard in the form of a closed cover. Tension is also very important. It should not be too small, then the sagging will lead to a quick failure of the entire transmission, but it should also be large enough so that the speeds can be shifted. It’s worth taking the time to adjust the tension well.

How to properly fasten a bike with a lock?

Hopefully you’ve already read about the different types of bike locks. And maybe you have an idea which lock will suit you best. But it’s not always about the castle. You should also know how to fasten your bike correctly and how to properly attach a lock to your bike! No matter how you use your lock, if you don’t use it correctly, your bike will be stolen.

over, it is worth thinking about how you are going to store and how to properly park the bike. This can help you choose the right lock. There are different ways to secure your bike and there are many different ways to lock your bike.

You also need to mention where you fix your bike, because that is very important too. There are 3 main places: on the street, at home, and possibly at work.

With one lock and chain

A good option is to combine a lock-chain and U-lock. If you lock your bike in the same place every day, there is good advice: you can leave a heavy and massive chain strapped on in the parking spot, and carry a not very heavy U-lock with you. The disadvantage of this method is that your castle is always available for a thief, and he has the opportunity to train hacking. So be careful! Try to attach the chain so that it does not touch the ground.

With one lock and cable

Another very popular method is to use one good lock and cable. Attach a U-lock or chain around the rear wheel, frame and bike rack as described above. Then pass one end of the cable through the front wheel, passing through the first loop, the second loop, and secure with the main lock. The problem with this method is that the cable is the only protection for the front wheel. Since all cables can be cut, they offer virtually no protection. However, many people think that visual and psychological factors are constraining and a cable will suffice.

Fastening your bike on the street

Although more than 50% of stolen bicycles are stolen from home, your bike is at very high risk of being outside. A badly fastened bike will disappear very quickly. It is worth carefully considering where you will attach your bike. Even if for a suitable place you have to walk a decent distance along the street and be able to properly attach the bike, then it is better to do just that.

When planning to leave your bike on the street, you should always evaluate the environment and understand how likely it is to steal a bike in a particular area. However, there are some generally accepted ways that we can follow.

Always try to choose a location with a lot of people walking by, and ideally a location with an overview of CCTV systems. If you see that the area is not safe, avoid it. Or, if you cannot avoid dangerous terrain, use an additional lock.

Choose a place where many other bikes are already parked and you will immediately understand how to hook the bike to the frame in the parking lot. The best way to do this is in the middle of the parking lot, not around the edges. This method is advantageous for three reasons. First, there will necessarily be a bike that is worse fastened, and therefore more tempting for a thief than your well-locked bike. Secondly, having many bicycles in one place will give the thief less room to maneuver and hinder the efficient use of his tools. And thirdly, in most cases, ordinary passers-by will not pay attention to the actions of the thief during the theft, and are more likely to pass by. In places where many bicycles are strapped at once, the concentration of caring cyclists is very high. Therefore, this will give the hijacker additional doubts.

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The bike is only safe if the object it is strapped to is also secure, so make sure you can choose a fixed, stationary object that is difficult to break. Make sure the bike cannot be lifted over the top of the object to which you strapped it. Or that this object cannot be easily unscrewed or disassembled. Avoid trees, aluminum structures, or wooden posts. If you are opting for metal railings, try using as many beams as possible to secure the lock. The best option for such an object is specially designed bicycle parking, firmly bolted to the ground.

Two locks

The safest way to lock your bike with two padlocks to a parking lot firmly in the ground. The first lock should go around the rear wheel, frame and parking. The second one should go around the front wheel, frame and parking lot in order to fix all parts of the bike. It is best to use two different types of locks, this will force the thief to use 2 different sets of tools for each lock.

How to properly fasten your bike

There are several ways to secure your bike. Which one to choose depends on several parameters: the price of your bike, the quality of the castle, and the parking space. However, there are always certain rules to follow.

Always block the frame to stationary objects. If you only secure the wheel, the thief will simply unscrew it and walk away with your frame. This may sound obvious, but this is the most common mistake.

Try to keep the lock away from the ground or catching the top tube of the bike. If your lock is close to the ground, it becomes more vulnerable to the bolt cutter, where the ground will provide additional support for the lever. If you attach the lock around the top tube of the bike, the thief can use the frame to try to break the lock by lifting and turning the entire bike. Ideally, the lock should secure the downtube or seat tube.

Try to make the lock the most difficult to access. Try to position it so that the keyhole is facing downward. This will make it more difficult for a thief to reach.

If you are using a U-lock, try using it as much of the frame tubes as possible and grab as much of the parking space as possible. The most common part of the hack is the bolt socket where the shackle is inserted. The less space you leave in the bracket, the less chance of breaking that lock.

Four ways to lock your bike on the street

Here are four popular methods for blocking your bike outside. Which one suits you best will be clear given the high cost of your bike and your lock.


This type has a special lock, with which the links are attached to each other. Such a mechanism is called a clamping mechanism. It is simple and convenient, and for replacement or repair, it is enough to open the lock.

On a cleaned circuit, the connector will be easy to find. It is very often affixed with the brand name of the manufacturer’s organization. It is necessary to open such a connector in order to inspect the links.

How to remove a chain without a lock by squeeze?

The whole process can be expressed in step-by-step actions:

  • It is recommended to use a special tool. squeeze. It consists of a metal base and a twisting bolt;
  • It is necessary to select 1 link or several for opening;
  • It is recommended to bring the link or links into a special position in relation to the axle or pin;
  • With slow movements, you need to unscrew the screw and tighten the axle (these actions strongly shake the axle, which can lead to unusability);
  • It is recommended to put the axle in place by pressing (it consists in clamping the links together and returning the pin to its place using a screw).

How to remove the chain from the bike, troubleshoot and install back?

Sometimes there are situations when you need to repair your bike yourself. Particularly important parts are those that provide torque while driving. These are wheel hubs, chain and spokes. Removing the chain from a bike?

How to install a new bike chain

Let’s assume that all the technology requirements are how to choose a chain for a high-speed bike. successfully completed. Those. in front of you is a detail that fits the width of the rear and front stars and you just have to put it on:

  • Position the product so that the extruded pin is closer to you.
  • Run the chain over the large sprocket in the idle direction (reverse drive pedaling) through the front derailleur.
  • Put the chain on the cassette and go around the rollers of the switches according to the diagram shown in the figure.
  • Press in the pin using a squeeze.

For your information. Pressing the link axis can only be squeezed. When pressing in, ask an assistant or fix the rear derailleur with a piece of wire so that the chain sags on the lower tier. In this way, the risk of damage to the opposite plate can be virtually eliminated.

How to remove a chain from a bicycle with a lock

In the process of using the bicycle, a situation may arise in which it is necessary to remove the chain from the bicycle frame. There may be several reasons: replacement of the chain due to its wear, the need to remove the chain for its complete cleaning, work on increasing the number of links (building up the chain) or reducing the number of links, breaking the chain during operation. As you can see for yourself, without disconnecting one of the chain links, it will not be possible to remove it from the bike frame, which means you will have to disconnect.

Chains from different manufacturers differ in the type of link connection. For example, some Shimano chains do not have connecting links, and some are supplied with a special connecting pin (pin) to facilitate the first installation of the chain on the bike. There are also chains with special locking links. Such a locking link is usually highlighted on the chain in color. It can be easily disconnected and reconnected without the need for special tools.

It is very easy to release the lock on the bike chain. To do this, you need to take the link-lock in your hands and move its pins (pins) with your hands or pliers towards each other. After that, the two halves of the link-lock must separate from each other, and each will remain with its own pin.

To disconnect a bicycle chain that does not have a locking link, you need a special tool. a chain wringer. Without it, it is very difficult to remove the bike chain without damaging its links. Please note that usually chains that have a lock link cannot be squeezed apart. Check carefully for the presence of a chain lock.

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In order to disconnect the chain, it is necessary to press out one of the pins using a squeeze. It should be noted that you cannot press out the connecting pin, which is available in some circuits. This is because this pin is slightly thicker than the others and is subject to more wear. Reusing it dramatically increases the risk of chain breakage. The connecting pin is different from the rest. so it is quite easy to distinguish it.

Proper Bike Lock-Up with a Chain

So, when the squeeze pin is selected, you need to install the squeeze on the chain. Many pomaces have two chain seats. The chain should be laid closer to the adjusting screw, otherwise you can hopelessly damage its links or the extractor itself. The second seat for the chain is not involved when it is disconnected.

Next, you need to tighten the adjusting screw and tighten the squeeze screw until the squeeze is held on the chain. It is worth checking that the adjusting screw does not allow the link to bend, and the squeeze tip presses exactly on the pin, and not on the link. In this case, there should be no distortions or any strange positions of the chain in the squeeze.

After you have made sure that everything is installed correctly, you can begin to rotate the squeeze screw. However, it can rotate with decent effort. It is not worth rotating quickly, since if you want to subsequently reconnect the link in this place, then it is necessary that the pin does not come out of the outer part of the link, otherwise it will be very difficult to put it back. If you are doing this procedure for the first time, do not be lazy, rotate slowly, often remove the chain and check how much the pin has already come out.

If done correctly, the circuit will be disconnected. Remember that if you often disconnect and connect the circuit, then it is best to squeeze out different pins. After each pin squeezing, the reliability of this node decreases.

The sequence of actions for removing the chain from the bicycle without squeezing with your own hands

Pomace is a useful tool. However, it is not always at hand. What then is to be done? The prospect of staying with a non-working bike in the middle of pristine nature, somewhere many kilometers from the city, does not look attractive. You can remove the chain from the bike without squeezing. It will not be easy to do it yourself, but it is quite possible. Let’s consider in detail the options for parsing the chain with and without a lock.

Squeeze for the chain and how to remove the chain without squeezing

What could be better than a day out of town cycling! However, the pleasure can be overshadowed by unexpected circuit breakage. If domestic bicycles for the most part consist of split sections of the chain, the locks between which can be divided without much difficulty, then in sports bikes the chains are often one-piece. About how the chain is removed, and what devices there are for this, we will talk today.

How to remove a chain from a bike without a lock

If the chain does not have a lock, then a tool is needed to remove it. squeezing the chain. Without a squeeze, it is quite difficult to disconnect the chain and the chance of damage to the chain links is very high, and it is almost impossible to connect a chain opened in this way. If the chain has to be removed often enough, then it is better to have such a tool in your arsenal, squeezing the chain greatly simplifies working with the chain without a lock.

In order to disconnect the chain without a lock, it is necessary to press out one of the pins (link axis), just for this procedure we need a squeeze. Any link is suitable for this operation, but it should be borne in mind that the next time you press out, it is worth choosing a different link, since each time the pin looses more and more. Ideally, a connection lock should be purchased and installed.

So, we proceed to the direct riveting of the chain. The chain link must be inserted into the squeeze (as in the picture below). Honor has it that most puckers have two grooves for chain placement, in this case you need to install the chain in the groove closer to the fixing screw. The second groove is only needed for adjustment.

One end of the pin must remain in the link

How to remove a chain with a lock

As already mentioned, this process is very simple and in most cases no special tools are required. Despite the wide variety of types of locks, they all disconnect in almost the same way. If, nevertheless, it is not possible to disconnect the lock manually, then you can use a special tool (see the figure below).

Variety of bike chain locks

Disconnecting the chain lock

Removing and putting on the chain on the bike

Quite often it becomes necessary to remove and then put the chain back on the bike, for example, when cleaning the chain, replacing or changing its length. To do this, you must first disconnect and then reconnect the bicycle chain. This process is very easy if the chain has a special connecting lock, but if the chain is without a lock, then a special tool will be required to disconnect the chain. squeezing the chain. What other tools may be required for repair, we read in our article. tools for repairing a bicycle. Let’s take a closer look at the case with and without a lock.

Bicycle chain extractor

How to chain a bike without a lock

Before reconnecting the chain on mountain and sports bikes, it must be correctly pulled through the rear derailleur rollers, see fig. below, marked with a red line:

Correct chain position

Next, go to the direct connection of the chain link. To do this, it is necessary to carry out the same operation, only in reverse order. We place the chain in the groove near the fixing bolt so that the protruding pin looks at the squeeze nose. Twisting the handle, smoothly push the pin back until it fully enters the link. After this procedure, the links into which the pin was pressed should move freely, if this does not happen, then you need to use the adjusting groove for the chain squeeze. Having placed the desired link in the adjusting groove, it is necessary to ensure that the ends of the pin protrude from both ends equally.

The chain links must move freely.!

If the chain is from Shimano with a disposable connecting pin, press it into the link using a squeeze and break off the rounded end. This tip is needed to simplify the process of pressing the pin.

How To Replace A Bicycle Chain

Shimano chain link pin

Here, in principle, is all you need to know about how to put on and remove the chain on a bicycle, as well as disconnect and connect the chain without a lock. If you have experience in disconnecting circuits without squeezing, we ask you to share it with us and our readers in the comments below.