The algorithm of actions when putting on the chain is approximately as follows.
- Turn the bike upside down, placing it on the saddle and handlebars, or lift it up so that the rear wheel rotates freely.
- If the bike has a bicycle chain guard, it is better to remove it. This will make it easier and more comfortable to reach the chainring. If you are too lazy to shoot, or you can already reach the asterisk. well, it’s your business.
- Place the chain completely over the rear sprocket. (If you have not removed the protection, then it may be more convenient to completely put it on the front sprocket).
- Place the chain over the chainring in the direction of rotation and pedal forward in the direction of travel. When the pedals are rotated, it itself is thrown over the remaining teeth.
Here you need to understand that if the bike is upside down, then the chain is thrown onto the lower part of the sprocket (in relation to you) and, scrolling the sprocket itself by the pedal clockwise, we throw it on the front sprocket entirely. If you start to throw the chain over the top of the sprocket in relation to you, you will not be able to pedal. after all, in fact, you will have to press the brake.
If the bike is in the normal position (wheels down), then again throw the chain on top of the sprocket and pedal clockwise. as if you were driving forward.
Standard withdrawal process
All guides describe the same removal procedure. This will require, first of all, a small set of tools. without them it will be quite difficult.
- key for removing the rear wheel;
- pliers for holding segments and pins;
- squeeze. a device for pressing out pins, without a lock. the most important tool in the process.
Adjusting the chain tension in bicycles at speeds
The tension of the chain on a bike with a parallelogram derailleur (rear) is determined solely by the spring stiffness of the derailleur itself. But the chain, which turned out to be too long, will begin to beat against the frame, since the tensioner will no longer be able to compensate for its slack.
It should be borne in mind that insufficient chain length leads to wear of the main transmission parts, since it significantly complicates their switching. Owners of two-suspension bicycles should especially pay attention to this.
When installing a new bike chain on high-speed models, the chain should be shortened. Several links. But to determine how many specific links need to be removed, there are two possible methods:
- Pull the chain at the front and rear over the largest sprockets. And then pull on the chain, moving the rear derailleur forward and to the limit. It remains to add 2 links, and you get a chain of optimal length.
- Or the chain needs to be thrown from the front to the largest sprocket, from the back to the smallest. And pull the chain until the rear spreader frame is in the “straight down” position and the derailleur rollers do not form a horizontal line. This is the optimal chain length, the excess must be removed, and the missing must be added.
On two-suspension bicycles, adjust the chain (or rather, adjust its length) more correctly by pressing the pendulum down to the position at which the front star cassette will be as far away from the ratchet as possible. The resulting chain length is measured-noted, and all unnecessary is removed.
Reasons why the chain flies off the stars on a bicycle:
Most common cause related to single and multi-speed bikes.
How to check the tension of the bike chain? Its sag on a single-speed bike should be 10-15mm maximum in the center between the sprockets.
How To Put A Bike Chain Back On-EASY Tutorial
details about this are described in the article “How to correctly determine the length and tension of a bicycle chain” and we will not repeat ourselves here.
Curvature of one or more chain links. Usually one link is enough. It occurs from impacts due to careless handling or falling of cyclists.
Single-speed cycling is more robust and such problems are extremely rare there. In more gentle multi-speed ones, this happens, but it cannot be said that very often. There is no way to treat it. It is necessary to either remove or change the link, if the length of the chain allows, or replace it all. If the chain is already partially worn out, it is better to immediately change it to a new one.
Aligning the link with a hammer on the anvil or pliers is unrealistic. It is ideal not to align it directly, but in this form it will still accelerate the wear of the sprockets and fly off them.
Deformation or wear of the sprocket teeth in the system or cassette.
Deformation can only occur from impacts, and wear, especially on bikes with gear shifting, is a natural and inevitable process.
In both cases, it is better to change the asterisks, and if they are not the newest anyway, there is a reason to replace the entire cassette at once.
I would like to clarify one more thing. To insert into place the curved teeth of the sprockets “with the help of a hammer and some kind of mother” is, at first glance, a simple and obvious business, but not rewarding and often useless. Although the craftsmen do everything, but then you will ride such a bike, so think for yourself. Ideally, it will not work out exactly: this means that the wear rate of the chain will increase, and the risk of dropping it from the sprockets will remain.
This is very rare on single-speed bicycles, but common on multi-speed bicycles. How to correctly determine chain wear is described here and we will not repeat ourselves either.
Front or rear derailleur incorrectly configured.
This only happens on bicycles with gear shifting. The problem manifests itself when, when pedaling, the cycle itself jumps to another chainring. In this case, you need to set the switches correctly. This is usually done with two adjusting bolts, designated by the letters L and H. But we will not consider all the nuances of this process within the framework of this article, especially since there are many materials and videos on this issue on the network.
In the absence of squeeze, you can install everything back without it. Pliers and any sturdy cylinder, for example, a small hexagon, will help. Gently clamping the cylinder, the pin can be riveted similarly to the work of the squeeze, it just requires a lot more attention and application of forces.
Models with a lock can be unhooked using a tight rope or cable. This allows for prompt repairs literally in the field, for example, when the chain suddenly breaks on a short hike.
Chain Removal Situations
Maintaining your bike is very important, and there may be several reasons for removing the chain:
- Deep cleaning. it is recommended from time to time to remove all elements and clean from grease and accumulated abrasive.
- Link damage and replacement.
- Replacing a worn chain.
- Length change with a new sprocket combination, e.g. on a mountain bike.
Home wear is primarily determined by elongation. An overstretched chain is cause for concern as link misalignment will severely damage the sprockets and can be hazardous to derailleurs.
It is quite difficult to notice wear by eye, and to determine it there is an indicator. the length of 24 links:
- if it is equal to 305 mm (304.8 value for a new set), everything is in order;
- 306.5-307.5 mm. it’s time to change;
- 307.5 mm. if the bike was still in use with such wear, then most likely the entire set of sprockets is damaged;
- 308 mm. the value of the damaged transmission.
Objectively, it is recommended to service the transmission every 500 kilometers, but this value is not fixed, since even 50 kilometers on rough terrain with an abundance of sand and dirt in terms of wear can correspond to another thousand on clean city roads.
Some people prefer to cut the chain, but the stretch is usually evenly distributed, and the links can still damage the stars that cannot be repaired.
Let’s take a step-by-step look at how to remove the chain from a bike:
- We clean the links from dirt. it will interfere with each subsequent step.
- Removing the rear wheel is optional, but it’s much easier to work without it.
- Extrude the pin (the metal cylinder that closes each link) using a squeeze.
- Disconnect one link.
- Remove extreme links from switches.
The reverse sequence is the same. put the chain in place and assemble the structure back, riveting the pin with a squeeze, and rotating it in the opposite direction.
How to put a chain on a sports bike
How to properly tension your bike chain and why it matters
Everyone knows why you need a chain on a bicycle. But not everyone knows all the subtleties of its device and what danger its malfunction conceals in itself. Therefore, it is so important to know how to properly tighten the chain.
The bicycle chain is one of the most important parts of this type of transport. Its main task is to transfer the energy of the cyclist’s muscle work to the rear wheel. In addition, they are the driven link of the bicycle gearbox. Such a mechanism is formed due to the fact that the driving sprocket (which is on the pedals) is always made larger than the driven sprocket (the sprocket on the wheel). Thanks to this, the law of leverage is formed, which allows you to transform one type of energy into another.
If we talk about those bicycles on which there are several gears at once, then the chain is assigned an even greater role. In such a system, the chain drive acts as a floating transmission link that connects the drive sprocket to the driven sprocket. At the same time, it is not difficult to guess that if the chain breaks off, the transport will not be able to go further. And it happens quite often if the cyclist forgot to tighten the chain.
Then and today.
How to take care of chains
Like any other mechanism, the chain system needs maintenance. All you have to do is lubricate all the links thoroughly from time to time. In the event of rust formation, the metal becomes thinner, in addition, the link rollers become jammed, and the resource of the device is sharply reduced.
It is also important to know that during operation, the elements of the chain system run in to each other. In this case, various cavities, notches and other minor defects are formed, which, as strange as it may sound, ensure the stability of the system. If the chain is removed, and then put in a different way, as it walked before, or even turned over, accelerated wear will occur. In the worst case, it is also possible to increase the frequency of the rally of the chain. The chain system also wears out quickly if pulled too tight.
Reasons for loosening chains
Before you begin to tighten the chain, it is important to understand one truth. It’s just as bad for a bicycle when the chain is too tight, as it is when the chain is too tight. The surest way to check the chain tension is to push it from top to bottom, while the normal level of sagging should not be more than 1-1.5 cm.If this value is far beyond its limits, the chain system must be tightened.
Another symptom that should alert the driver is if the chain began to slip.
To begin with, the problem of sagging is most often encountered by owners of regular single-speed bicycles. The thing is that here the chain is not able to tension automatically, as in mountain or other similar types of bicycles.
But why do the chains start to sag? There are two reasons for this. Firstly, any chain has the ability to stretch, despite the fact that it is made of metal. At the same time, cheaper options stretch more, but expensive branded products practically do not have this property.
Secondly, the chain system can weaken if the rear wheel nuts were not tightened well, in this situation, under load, it shifts slightly forward and the tension of the chain mechanism weakens.
Improper chain maintenance is the cause of an accident
In the event of a collapse or breakage of the bicycle chain, with the best outcome, the driver will get off by not being able to continue to ride. But often with this there are more serious consequences. For example, if there is no special guard on the rear wheel, the chain can fall into the spokes, but here the outcome is unfavorable in all cases.
Under any combination of circumstances, the spokes of the rear wheel will be bent, and an eight will form on it, and the repair of such a breakdown will cost a pretty penny. And there is also a danger that the driver will injure himself or pedestrians, as his rear wheel will jam.
The next danger in the event of chain breakage or loosening applies to those bicycles that do not have a handbrake. Since here the entire braking system is located in the rear wheel carriage, therefore, the driver will no longer be able to brake in the usual way. It’s even scary to imagine if this happens at high speed.
How to tension the chain on a bicycle? Adjusting the Bicycle Chain Tension
As a child, each of us had to pull on a bicycle chain. The design of older bicycles was flawed, so this element often fell off. A lot of time has passed since then, and the innovations that came to the cycling industry have changed the mechanisms beyond recognition. Now it is difficult to find a single speed transmission, and the eight-speed transmission, popular until recently, is becoming a thing of the past.
The bikes are now equipped with nine sprockets and a thin chain, which require regular maintenance. this is the price to pay for comfortable gear ratios, speed and light weight. Consider what rules you need to follow in order to install the chain on the bike correctly, and its wear is minimal.
During walks in inclement weather, water and dirt accumulate on the transmission elements, and if these components and systems are not serviced immediately after returning home, then natural abrasive and rust will quickly disable them.
Adjusting the bike chain
In order to set the required tension, the bike is turned over and placed on a saddle or rack. The rear wheel can be removed by loosening the nuts or loosening the eccentric clamp. The brake lever and bracket on the stage are lowered so as not to interfere with the work. Further, the chain is disconnected with a lock, its excess part is removed, and after shortening it again returns to its place.
If your bike is of an old design (with horizontal dropouts), then all the processes are simplified by an order of magnitude. It is enough just to move the wheel further along the guides, and the question of how to put the chain on the bike correctly will be solved. However, in this case, it is necessary to control the wear of the links, since neglecting them can lead to breakage of the stars.
Basics of functioning
In the process of operation, this transmission element wears out the most on the hinges, where, under the influence of loads, the links are lengthened. As a result, the chain pitch increases, and it can no longer perform its functions. Typically, the service life of this element does not exceed 3-4 thousand kilometers, which is no more than 1-2 seasons. The wear of the bicycle chain is checked by its elongation. If the tooth is exposed by more than half when pulled away from the leading sprocket, then it is necessary to replace it. There is no point in repairing this element: after the chain is mounted on the bike, it will constantly fly off, and you will not be able to enjoy the ride. Properly cared for, this element will last much longer and reduce your costs.
Cleaning and maintaining the chain
Preventive measures to minimize transmission wear should be carried out regularly. To do this, remove the contaminated chain and wash it with a solvent. There are special devices that can help with this process and keep your hands clean.
They are called “washers”: they are a box with special brushes, rollers and guides, filled with a liquid that washes away dirt particles. If you carry out such a procedure regularly, then the problem of how to tighten the chain on a bicycle will not bother you, and the part will successfully serve for several seasons.
If cleaning has not been carried out for a very long time, then rust will form, which is much more difficult to remove. It is necessary to immerse the chain in a container with a corrosion converter or kerosene (it is best to use an aviation one, since it contains the least amount of impurities) and keep it for several days. Next, it must be removed, cleaned with a metal brush and left to dry in the sun. After a while, each link must be lubricated with oil from a special oiler and set in working position. We have already discussed how to tighten the chain on a bicycle at the beginning of the article, so there will be no difficulties in this matter. It is important to follow logic and your own intuition.
Principles of work
It is important to figure out how to tighten the chain correctly on the bike when you first install it, otherwise it will be difficult to move the bike and the gear mechanism will collapse. To do this, perform the following actions:
If you follow the theses of this simple technique, you will not have difficulties with the transmission. All the experience gained during the installation process can be applied in order to teach friends how to tighten the chain on a bicycle.
Features and special cases
- 2 rivets are removed from the link;
- an extra link is removed;
- the chain is connected and installed so that the closed end of the stop plate is located in the direction of its rotation;
- the open part is firmly riveted.
You are now ready to self service your bike drive.
Adjusting the tension on a bike without gears
A properly tensioned chain on a bike without speeds should be slightly free by an amount of sag of about 5 mm.
To tighten the chain on a regular speed bike, you need to:
- Put your transport wheels upside down.
- Loosen the nuts or eccentrics of the rear wheel.
- Adjust the correct amount of chain slack by sliding the wheel along inclined slots called dropouts.
It is only necessary to fix the rear wheel in the position when its axis is parallel to the carriage shaft.
When the chain is too tight, it becomes very difficult to pedal on the bike, the parts of the chain drive wear out quickly. Whereas the sagging chain can jump off the asterisks, and it will definitely be impossible to go further.
If the wheel has already rested on the edge of the dropouts, there is nowhere else to move it, and the chain belt is still dangling, then you will need to remove a couple of links.
How to tension and adjust a bicycle chain
An important element for the bike’s performance is the chain, the life of which depends on timely care. When working, it should not crack and creak. It is normal that during operation it gradually wears out and, as a result, lengthens. When adjusted correctly, the chain should have a slack of 10-12 mm. When pulled with your fingers, it should give in by 10-15 mm, and if this value is greater, then it must be pulled. Note that this is only relevant for bicycles or without derailleurs, or with planetary gears.
It is also important to adjust the tension when installing a new chain. Even more important is to tighten it after the first three arrivals. A new part stretches very quickly during the first period of operation.
Collapsible chains are placed on a regular bicycle without speeds; they have a lock on one of the links. Most modern speed bikes use non-separable chains with all the links riveted equally well. It is not difficult to disassemble the one-piece riveted chain, it is enough just to grind the heads of the pins on one of its links on emery. It is even easier and more accurate to disconnect the rivets using a special tool. squeeze.
Thread A Chain On To A Bike’s Rear Derailleur
It should be noted that pomace is a versatile tool. With its help, you can not only squeeze out the locking pin, but also re-rivet the disassembled chain. Many squeezes have two working grooves: one is needed for pressing the pin out of the roller, and the other for pressing it in. A mounting location farther from the pressure screw is for ripping the chain pins. You can learn more about using such a tool in the following video.
Adjusting the bike with speeds
The amount of chain tension on a bike with a rear parallelogram derailleur is determined entirely by the force of the derailleur spring. But if the chain is too long, then this tensioner will not be able to compensate for its slack, and it will begin to hit the frame. This is especially true for bicycles with a short rear thrower.
Too short chain makes gear shifting difficult. It will cause accelerated wear of the transmission parts. This primarily applies to two-suspension bicycles.
Very often, when installing a new chain on a high-speed bike, it is necessary to shorten its length, that is, remove several links.
There are two ways to determine how many links to remove:
- Place the chain on the largest sprockets at the front and rear. Pull on it, pushing the rear derailleur all the way forward. Now it only remains to add two links, and the optimal length will be determined.
- Place the chain on the front of the largest sprocket and on the back of the smallest sprocket. Tighten the chain until the frame of the rear derailleur points straight down, more precisely, when the axles of the derailleur rollers become in one vertical line.
On double suspensions, it will be more correct to adjust the chain length by pressing the rear swingarm down to the position when the front sprocket cassette is as far as possible from the rear ratchet. By marking the desired length, extra links can be removed.
The chain starts to slip when the tension is released due to its extreme tension. And when overstretched, it, in turn, quickly wears out the sprockets. So by putting a new chain on an old ratchet, you may not achieve anything. All the same, slipping on small stars will remain.
If this is not the first time you tighten the old chain, get ready to replace it soon. Remember that you can only remove two links from it once. In the end, you still have to spend money on a new part.
Removing the chain from a bike
How to install a chain on a bike
On the simplest single gear bike, tensioning the chain is all it takes with one wrench, just loosen the two rear wheel nuts. Most often this is a key of either 17 or 15. First, the bike must be turned upside down, and then slightly loosen the two nuts on the rear wheel. If you encounter the problem of chain sagging on a mountain bike or any other that has several gears, then in such a situation it is changed.
Chain: choice and proper care
It is mounted at the back. It is rarely found on professional bicycles, more often on ordinary ones. To begin with, it is reasonable to simply understand whether it is necessary to engage in tensioning the chain on a bicycle or change it, since this step is important for adequate work great. If on a speed bike it becomes difficult to adjust the gearshift settings.
Loosely tense and tensely taut are equally problematic when driving, so it is important to stop in time to keep the chain at medium tension. In this case, your task ensure that the length of the chain is the same as it was originally. For a high-speed bike, if the first two methods of tightening the links did not give the desired result, then you can try two other methods. The first method works only for high-speed bicycles that have already traveled with a weakened spring, that is, with an old gear shifter.
How to put on a bicycle chain will be described below, but for now we will consider how to disassemble a bicycle chain to repair it. As a result, the chain has lengthened slightly and will fall off when cycling. In order to put on the bicycle chain after repair, you must first open it and thread it through the frame of the machine.
How to install a chain on a bike
Let’s start disassembling the bike chain. Everyone knows why you need a chain on a bicycle. Next, you need to put a chain on both sprockets of the bike. On regular road bikes, the chain is not that difficult to tighten. For some reason, then the chains served almost longer than the bicycle itself. The fact is that in such bicycles, the machine is responsible for the chain tension. In order to disconnect the bicycle chain, we installed a special lock on it, shown in Fig. 14.
An important element for the bike’s performance is the chain, the life of which depends on timely care. When working, it should not crack and creak. When adjusted correctly, the chain should have a slack of 10-12 mm. When pulled with your fingers, it should give in by 10-15 mm, and if this value is greater, then it must be pulled. Note that this is only relevant for bicycles or without derailleurs, or with planetary gears.
When the chain is too tight, it becomes very difficult to pedal on the bike, the parts of the chain drive wear out quickly. The amount of chain tension on a bike with a rear parallelogram derailleur is determined entirely by the force of the derailleur spring. But if the chain is too long, then this tensioner will not be able to compensate for its slack, and it will begin to hit the frame. This is especially true for bicycles with a short rear thrower.
This primarily applies to two-suspension bicycles. Very often, when installing a new chain on a high-speed bike, it is necessary to shorten its length, that is, remove several links. On double suspensions, it will be more correct to adjust the chain length by pressing the rear swingarm to the position when the front sprocket cassette is as far as possible from the rear ratchet.
The chain starts to slip when the tension is released due to its extreme tension. If this is not the first time you tighten the old chain, get ready to replace it soon. The bicycle chain is one of the most important parts of this mode of transport.
In addition, they are the driven link of the bicycle gearbox. At the same time, it is not difficult to guess that if the chain breaks off, the transport will not be able to go further. In the event of a collapse or breakage of the bicycle chain, with the best outcome, the driver will get off by not being able to continue to ride. But often with this there are more serious consequences. For example, if there is no special guard on the rear wheel, the chain can fall into the spokes, but here the outcome is unfavorable in all cases.
The next danger in the event of chain breakage or loosening applies to those bicycles that do not have a handbrake. Before you start to tension the chain, it is important to understand one truth.
Another symptom that should alert the driver is if the chain began to slip. To begin with, the problem of sagging is most often encountered by owners of regular single-speed bicycles. The thing is that here the chain is not able to tension automatically, as in mountain or other similar types of bicycles. There are two reasons for this. Firstly, any chain has the ability to stretch, despite the fact that it is made of metal.
How to install a chain on a bike
Before installing the chain, you need to make sure that it fits your bike in length and width. A special axle with a pointed end is usually sold with a chain. It serves to facilitate installation, after pressing the axle, this end must be broken off with pliers. Also, the axle can be already installed in place if the chain is supplied without a special axle.
To install the chain, move the front and rear derailleurs to small sprockets. Then pass the chain through the derailleur tension frame, do not confuse the directions, the lower roller runs the chain on the left and the upper one on the right.
We connect the open links, install the axis. We insert the link into the chain squeeze and fix it with a fixing screw. Press the axle into place by rotating the chain release handle, it should line up with the edges of the chain. Remove the chain from the squeeze, if necessary break off the end of the axle.
Check that this chain link bends freely, if it runs tight, then it is necessary to adjust the axle with a squeeze. In this case, insert the link into the second seat of the squeeze, then you can see both ends of the axle.
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.
If you have problems opening the locks, you can use tools such as special pliers to open locks.
How to properly chain a speed bike
Chain adjustment on speed bikes
To save money, some craftsmen “cut” the chain, that is, cut it and reduce the number of links. Of course, this option is also possible, but it is important to understand that a stretched chain is a worn out mechanism and it will not last long.
For people who still remember Salyut bicycles, the suggestion “to choose a new chain for a bicycle” sounds somewhat wild. The answer is simple: in those bicycles, only one speed was provided, so the chain was constantly in a calm state and did not wear out as quickly as on modern bicycles.