Do-it-yourself bike chain change

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.

bike, chain, change

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.

At the crossroads of two technologies: methods of replacing a worn chain on a bicycle at speeds

The main purpose of the procedure is to disengage the old chain and connect the new one together. Before doing anything, check how the chain is engaged now. It either represents a single whole, or has a detachable link (lock) in its design. This is important, since the type of fastening determines the list of required tools and, in fact, the maintenance method.

How to remove a bicycle chain without a lock

First, place the chain closer to you so that it is convenient to remove it after opening and start a new analogue on the stars. To do this, simply move the rear derailleur to the extreme position (smallest sprocket), and align the front derailleur with the third gear gear (largest sprocket).

Squeezing a pin out of a link is much easier than pushing it back in. Select one of the constituent elements of the chain and extrude the axis in any of the following ways:

  • Tapping with a hammer through a knitting needle or thin stud.
  • Squeezing with a hard tip fixed on the chain squeeze bolt.

Remove & Replace A Chain Pin. Park Tool CT-3.2 Chain Breaker. BikemanforU How-To

Important! When tapping or pressing out, the back plate of the link must rest against something. For example, a special rib is provided for this in the squeezing device. Wielding a knitting needle and a hammer, the bicycle chain can be put on a metal substrate (for example, a rail, a weight) or a hard stone, but so that the pin has where to go.

It is more convenient to squeeze out at the lower level. After disconnecting, it is easier to remove the chain at idle when the pedals are spinning in the opposite direction.

For your information. Do not fully press out the pin. It is very difficult to insert it into the outer plate. If you do not feel the position, proceed in steps: rotate the handle of the squeeze bolt, remove it, assess whether it is already possible to open the link. If yes, then the squeezing is considered over, and if not, put the squeezing device back on and repeat the cycle of actions.

How to shorten the chain

Usually a fresh chain is slightly longer than even a tired product. If you put it without shortening, the position of the rear derailleur will not correspond to the required one. The quality of gear shifting suffers from this.

The easiest way to calculate the correct size is to compare the lengths of the old and new chain. It is not necessary to use a tape measure, just put them next to each other. Having combined both ends on one side, on the other we will see a discrepancy in dimensions. Excess links are extruded according to the already outlined method, taking into account the recommendation for incomplete removal of the axis from the hole.

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Attention! When removing unnecessary links, follow the logic of their connection: the outer plates are pushed onto the inner ones. The outer plates will not sit on similar outer ones. Consider the design of the suspension: on double suspensions, the length of the chain should be sufficient in the position of full compression of the shock absorber.

Decoupling techniques

  • If there is a lock in the chain, it is enough to open it.
  • If the chain is a single unit, it is necessary to press out one of the axles (pins).

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

How to remove a bicycle chain without a lock

First, place the chain closer to you so that it is convenient to remove it after opening and start a new analogue on the stars. To do this, simply move the rear derailleur to the extreme position (smallest sprocket), and align the front derailleur with the third gear gear (largest sprocket).

Squeezing a pin out of a link is much easier than pushing it back in. Select one of the constituent elements of the chain and extrude the axis in any of the following ways:

  • Tapping with a hammer through a knitting needle or thin stud.
  • Squeezing with a hard tip fixed on the chain squeeze bolt.

Important! When tapping or pressing out, the back plate of the link must rest against something. For example, a special rib is provided for this in the squeezing device. Wielding a knitting needle and a hammer, the bicycle chain can be placed on a metal substrate (for example, a rail, a weight) or a hard stone, but so that the pin has where to go.

It is more convenient to squeeze out at the lower level. After disconnecting, it is easier to remove the chain at idle, when the pedals are spinning in the opposite direction.

For your information. Do not fully press out the pin. It is very difficult to insert it into the outer plate. If you do not feel the position, proceed in steps: rotate the handle of the squeeze bolt, remove it, assess whether it is already possible to open the link. If yes, then the squeezing is considered over, and if not, put the squeezing device back on and repeat the cycle of actions.

At the crossroads of two technologies: methods of replacing a worn chain on a bicycle at speeds

The main purpose of the procedure is to disengage the old chain and connect the new one together. Before doing anything, check how the chain is engaged now. It either represents a single whole, or has a detachable link (lock) in its design. This is important, since the type of fastening determines the list of required tools and, in fact, the maintenance method.

Decoupling techniques

  • If there is a lock in the chain, it is enough to open it.
  • If the chain is a single unit, it is necessary to press out one of the axles (pins).

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:

Making a sprocket for bicycle chain the way Clickspring wouldn’t

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

How to shorten the chain

Usually a fresh chain is slightly longer than even a tired product. If you put it down without shortening, the position of the rear derailleur will not be correct. The quality of gear shifting suffers from this.

READ  How to make a key from a bicycle chain

The easiest way to calculate the correct size is to compare the lengths of the old and new chain. It is not necessary to use a tape measure, just put them next to each other. Having combined both ends on one side, on the other we will see a discrepancy in dimensions. Excess links are extruded according to the already outlined method, taking into account the recommendation for incomplete removal of the axis from the hole.

Attention! When removing unnecessary links, follow the logic of their connection: the outer plates are pushed onto the inner ones. The outer plates will not sit on similar outer ones. Consider the design of the suspension: on double suspensions, the length of the chain should be sufficient in the position of full compression of the shock absorber.

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.

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.

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.

When is it necessary?

This procedure may be needed at the following points:

  • Replacing an old part with a new one;
  • Installation of new speed switches on the transport;
  • To make the chain shorter;
  • To clean the element.

Work process

Removing an element with a lock does not take much time and effort. Today there are several varieties of this bicycle chain device, but the principle of their opening is similar. It is necessary to close the axles and remove the cover. For convenience, you can use pliers, it is also good if you have pliers for opening at hand. Thus, the whole procedure does not take much time and it will be possible to quickly remove the malfunction, change the part or remove the chain from the bike.

If there is no lock, then you need to make some effort. For work, you need a special squeeze. It is a tool with which it is very convenient and easy to squeeze out a pin. To work, place the chain link so that the release axle is directly opposite the pin. Then you need to twist the handle and squeeze out the pin itself. It is very important not to allow it to pop out, otherwise it will be very difficult to insert the pin into place correctly. Further, the bicycle chain can be replaced or repaired.

There are also some points to consider when working. For example, there was repeated removal of the same bicycle chain, then the next time it is necessary to open another link and segment, because after this process it loosens a little. Also, some models of pomace may have two seats and you need to fasten the link carefully, correctly and carefully.

Removing the chain from a bike

Maintenance: DIY bike chain repair

Two-wheeled vehicle repair skills will help riders deal with difficult issues quickly and efficiently. The most common question of concern is how to remove the chain from the bicycle. At any time, unforeseen situations or the need for maintenance of equipment may arise and therefore several recommendations will help.

Design and its features

A bicycle chain is a fairly simple metal structure that is designed to transfer the drivetrain from the drive sprocket to the driven one. Component elements:

The main difference between the different types is the distance between the rollers and the width. In some modes of transport, this part may be part of the gearshift system. This detail is important and requires special attention.

A bicycle chain requires regular maintenance, cleaning and repair to function properly. Periodic lubrication and flushing will ensure that the equipment works well, and every few thousand kilometers the chain must be replaced with a new one. There is also a certain indicator of the degree of elongation (0.5%), that is, the pores when a new part is needed. Without special tools for measuring, you can determine the degree of wear as follows: you need to install the element on the largest sprocket (leading) and pull it off, moving it away from the teeth. If the resulting space contains more than 4 teeth, then the bicycle part must be urgently replaced.

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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, you should choose 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). It is worth considering that most puckers have two grooves for placing the chain, 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

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 it. a chain wringer. 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 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

How to put a chain on a bicycle 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!

Bicycle Chain Replacement. No Specialty Tools Required!

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.

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 Комментарии и мнения владельцев below.