How to replace a lock on a bicycle chain

How To Untangle A Bike Chain

View 1: Chain lock with two pins

I have not seen such locks for a long time, but they are still used for single-speed chains and on old Soviet bicycles. For example, KMC MissingLink 1 sp Z410-SO lock.

Design

The castle consists of two parts. The first part is two pins located on one cheek, and another cheek (bar) with a hole in the middle, which keeps the chain links from opening.

How to remove a spring-loaded cheek lock

This is the most difficult stage, it is not always possible to do it with bare hands. We need a screwdriver to remove the lock. As in the case of installation, you need to bend the chain so that the pin goes to the place on the bar where it can come out, but this does not happen without a screwdriver. You need to help the pin to free itself from the bar, so you need to hold a screwdriver in one of your hands and bend the chain, pressing on the pin with a screwdriver at the moment it approaches the expansion in the bar. As soon as the pin is released, you will hear a click. this means that everything worked out for you correctly.

These locks are not intended to be reused, they usually bend after being removed. But you can always try to bend it back and put the lock again if there is no other lock at hand.

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.

How to open a chain lock with two pins on one side

These locks are the easiest to open. It is enough to grab the pin and the locking cheek from the side of the cut with pasatizh, press a little. and the lock is open. If no pliers are available, a screwdriver can be used. We rest with a screwdriver on the edge of the cheek from the side of the cut and press until the lock opens.

How to use?

Before proceeding with the installation of the lock, you need to check if there is already another lock on it, which came directly with the kit when buying a bicycle. Finding a lock is usually easy, since the name of the manufacturer will be stamped on it. Whether to install it or not is everyone’s choice. But if there is a need to often remove the links, then the lock in this case will be useful. To install the lock, half of the link must be removed to make room for it. In order to carefully do this and not damage the links, you must use a tool called a squeeze. The removed pair of outer links can be thrown away and replaced with lock plates. After the performed operation, it is necessary to fasten the lock. To do this, you need to stretch the chain until a click appears. If you suddenly need to remove this spare part, then it will be enough to bend the chain and slide the hole until it opens.

It should also be noted that not every lock will be easy to push apart by hand, so additional force and the appropriate tool may be required to remove it. For safety reasons, do not install the lock from an old chain. It will be better if this detail is individual for each vehicle, because at the most inopportune moment it can fail, because was sharpened to fit the previous chain.

Why do I need a lock on a bicycle chain?

When using a bicycle, unforeseen situations can often occur, one of which is the need to disconnect the links on the bicycle chain. There are many tools available to help you do this, but the simplest tools are bike locks. So, perhaps it’s time to figure out how you can disconnect the chain with a lock.

Chain lock

First of all, it should be noted that the lock is selected depending on the number of speeds. Also, the choice of the lock is greatly simplified by the fact that the same option is suitable for six, seven and eight speeds. Therefore, if there are several bicycles available, and the number of their speeds coincides with the above, then you do not have to buy several locks. The same can be said for chain manufacturers. If the number of speeds on bicycles is the same, but the manufacturers’ models are different, then there is nothing wrong with that, the lock is suitable for all of them, since the chains are usually identical.

What is this part?

These are quick-release links consisting of two plates. Thanks to its design, it becomes much easier to open and close the links of the bike. When purchasing a lock, you should pay attention to what is written on the package. As a rule, it contains the most important information that will help in the further use of the castle. Particular attention must be paid to how many speeds this lock is suitable for. Most likely, more than one indicator will be indicated there, which is beneficial for users.

Disadvantages of using

Like any other bike part, the lock has its drawbacks. And the most important, perhaps, is strength. Since it can be disassembled in two, it automatically becomes less reliable than conventional chain links. This raises the risk that the chain is likely to break exactly where it is installed. But do not worry about this, because this happens extremely rarely and after long-term use.

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Of course, a chain lock is a very handy thing. With it, you can easily disassemble and assemble the chain so that you can easily remove it from the bike and then install it. If you install a new copy, then it will last much longer and will not be life-threatening. That is, having installed a new one, you can not be afraid that it will burst at the most inopportune moment. Also, do not forget about the sizes that are suitable for this or that option. In some cases, the same spare part may be suitable for different sizes.

How to remove a spring-loaded cheek lock

This is the most difficult stage, it is not always possible to do it with bare hands. We need a screwdriver to remove the lock. As in the case of installation, you need to bend the chain so that the pin goes to the place on the bar where it can come out, but this does not happen without a screwdriver. You need to help the pin to free itself from the bar, so you need to hold a screwdriver in one of the hands and bend the chain, pressing on the pin with a screwdriver at the moment it approaches the expansion in the bar. As soon as the pin is released, you will hear a click. this means that everything worked out for you correctly.

These locks are not intended to be reused, they usually bend after being removed. But you can always try to bend it back and put the lock again if there is no other lock at hand.

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 together too. This is a big inconvenience 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. I 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.

How to remove a chain lock with 2 symmetrical pieces

To remove the symmetrical lock, you need regular pliers. We bend the chain so that it resembles the letter “P”, where the top of the letter is our lock. In this position, we need to press on the lock with pliers obliquely (diagonally) in order to move the two parts of the lock (press with pliers from the sides where the pin comes out of the cheek). The method works perfect! And the hands are safe, and it takes 15 seconds.

There is also a way to remove it with your hands. ropes or cables. this is when the pins are wrapped with a rope and then pulled together, but usually “tight” locks do not open in this way.

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 there is no sagging or obstruction 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!

Types of locks for a bicycle chain, methods of installation and removal

Over the course of my life, I have come across 3 types of bicycle locks. Today I will tell you how easy it is to put and remove a chain lock in any form.

Why is it necessary to change the chain?

It is recommended to change the bicycle chain every one and a half to two thousand kilometers, since it is subject to a lot of wear and tear, specifically. stretched. This is not surprising, since a huge load falls on this part of the transmission, a large longitudinal force, which leads to the removal of the chain elements from each other, which entails a number of unpleasant consequences. This is, first of all, chain slippage, which will occur when a large load is applied to the connecting rod. Thus, it will be quite difficult to reach high speed on a bicycle with a worn chain, and even about steep climbs you will have to forget about it.

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The second unpleasant consequence of chain wear will be difficult gear shifting. When you try to throw the chain from one sprocket to another, it will jump off, not being able to rigidly fix on the teeth of the sprocket. Consequently, all the advantages of a bicycle with a large number of speeds come to naught.

If the listed problems are not so terrible for the everyday use of a cheap bicycle, then professional athletes and advanced amateurs lose most of the advantages of their expensive, sophisticated bicycles.

How to determine the degree of chain wear?

After making sure of the need to periodically change the circuit, you should proceed to explaining the process itself. First of all, you should learn how to determine the moment when the chain requires replacement, because it is difficult to systematically monitor the mileage. The most accurate way to determine the degree of wear is to measure the distance from the center of an arbitrary pin (the axis connecting the links) to the center of the twenty-fourth pin after it with a simple ruler. This distance should be 304.8-306.4 mm. If the measured distance is longer than the recommended one. chain needs replacement.

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.

replace, lock, bicycle, chain

How To Replace A Bicycle Chain

The situation is more interesting with the second type of chains. chain with pin. First of all, you need a special tool. squeezing the chain. It is highly discouraged to remove such a chain using available tools. A 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:

That’s it, now the chain is disconnected, you can remove it and put a new one. The process of installing a new chain is fundamentally no different from the process of removing it.

Types of locks for a bicycle chain, methods of installation and removal

Over the course of my life, I have come across 3 types of bicycle locks. Today I will tell you how easy it is to put and remove a chain lock in any form.

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 uncouple the bike chain.

Components of the chain

Before we talk about how to remove the chain, it is necessary that you understand what is at stake. To do this, below, we will give an explanatory picture with the constituent elements.

How to install a spring loaded chain lock

After we connect the chain with the first part of the lock with two pins, we need to secure the bar. The bar has a hole where you can push one of the pins. Push in the 1st pin and shift the bar with a hole to the 2nd pin. Next, we need to bend the chain with both hands so that the pin goes into the pin hole in the bar. As soon as the pin enters the hole, you will need to bend the chain a little in the opposite direction so that the pin is in the working position. At the beginning I was afraid to bend, I thought I would break, but everything worked out!

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.

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.

Lock / not lock

So, the task in business, how to change a worn chain on a bicycle, is to find out if there is a lock. It is difficult to determine this on a dirty chain, so clean it. It does not have to be cleaned in full accordance with the routine procedure for removing old grease from the chain.

It is enough to brush off the main layer of dirt from the side plates and turn the pedals in the opposite direction. The shape of the detachable link is noticeably different from others, and immediately catches the eye. In more detail, its design can be studied from the photo.

What is this part?

These are quick-release links consisting of two plates. Thanks to its design, it becomes much easier to open and close the links of the bike. When purchasing a lock, you should pay attention to what is written on the package. As a rule, it contains the most important information that will help in the further use of the castle. Particular attention must be paid to how many speeds this lock is suitable for. Most likely, more than one indicator will be indicated there, which is beneficial for users.

replace, lock, bicycle, chain

How to use?

Before proceeding with the installation of the lock, you need to check if there is already another lock on it, which came directly with the kit when buying a bicycle. Finding a lock is usually easy, since the name of the manufacturer will be stamped on it. Whether to install it or not is everyone’s choice. But if there is a need to often remove the links, then the lock in this case will be useful. To install the lock, half of the link must be removed to make room for it. In order to carefully do this and not damage the links, you must use a tool called a squeeze. The removed pair of outer links can be thrown away and replaced with lock plates. After the performed operation, it is necessary to fasten the lock. To do this, you need to stretch the chain until a click appears. If you suddenly need to remove this spare part, then it will be enough to bend the chain and slide the hole until it opens.

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It should also be noted that not every lock will be easy to push apart by hand, so additional force and the appropriate tool may be required to remove it. For safety reasons, do not install the lock from an old chain. It will be better if this detail is individual for each vehicle, because at the most inopportune moment it can fail, because was sharpened to fit the previous chain.

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:

  • 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.

How to Replace a Chain on a Bike. Sizing & Installation

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, no need to put the lock from the old chain.

How to change the chain without a lock on a bike with shifting gears

In the absence of a lock, the technology for replacing the chain is reduced to three operations:

  • Pressing the pin out of any link.
  • Shortening a new chain.
  • Positioning and pressing in the axle on a new bicycle chain.

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.
replace, lock, bicycle, chain

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. This practically eliminates the risk of damaging the opposite plate.

View 3.1: Spring loaded cheek piece with two holes

There is another type of spring-loaded cheek lock. This is when the cheek itself has not one hole, but two, but the principle of installation and removal does not differ from type 3.

How a lock of this type opens and closes can be seen below:

It is important to note that depending on the number of stars on your cassette or ratchet, the chain width changes, and, accordingly, the lock itself. Therefore, you need to pay attention when buying a lock so that it is the same width as the chain.

What types of castles have you met? Share in the Комментарии и мнения владельцев, I will definitely add the material.

Removing the lock

According to the technology of changing the chain on a bicycle at speeds, the detachable link is disconnected with special pliers. In fact, you can take in the area of ​​the lock with both hands (preferably with gloves) and pull the ends of the chain to each other.