# How to make a chain on a speed bike

### 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.

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.

## Negativeness due to improper chain repair

Consequences can be conditionally divided into two types: for a person and for a bicycle. Consider how this threatens a two-wheeled friend.

Any sagging lowers speed performance and increases the muscle cost to build speed. That is, if you tightened the chain loosely, be prepared for the fact that it may break, and most importantly, it will begin to cripple the bike. Too much tension leads to rapid abrasion of parts. Then replacing one chain is indispensable. In addition to the stars, spokes, bushings, their components and other parts suffer.

For a person. The force that is transmitted to the wheels when pedaling in a stretched chain mode quickly leads to increased fatigue. The possibility of a long trip is actually reduced. Instead of your favorite rest, you can get road torment. According to statistics, the worst cases are cases of chain rally at speed while on the road. It’s not just injuries. This is the likelihood of death.

### 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 adjust the chain on a speedy bike view.

A mountain, road or other type of bike that uses in its mechanism the ability to move the chain from star to star, requires a separate method of chain tension. In such a two-wheeled mechanism, there is no permanent fixation. The tensioning procedure is guaranteed by a spring located on the rear derailleur. When the chain starts to sag, your friend’s speed performance deteriorates and a knock is heard. If the chain is overtightened during the repair process, this leads to poor gear shifting and rapid wear of the stars.

At the beginning of the entire repair procedure, it is worth determining the condition of the chain with respect to sagging. This can be done in two ways.

We set the speed to the maximum front chainring and the same rear. In the area of ​​the front sprocket, pull the chain in the direction of the front wheel. As soon as the rear derailleur has reached the stop, we calculate the number of extra links. If there are two of them, then everything is normal. The rest of the indicators indicate that it is necessary to make adjustments.

We position the speeds so that the maximum front chainring and the minimum rear chainring are used simultaneously. In this case, the roller that guides and the one that pulls the rear cross-over must be aligned along the axis and be perpendicular to the surface of the earth.

The pull-up process consists in removing the links that turned out to be superfluous. We will consider how to do this in a separate paragraph.

When adjusting a speed bike, you can use a separate tool. the chain tensioner. Its main function is to manage rigidity and save its owner from unnecessary problems with the repair of the problem area.

The mechanical version of the chain tensioner is mounted next to the rear derailleur. The simple design of such a device not only clearly fixes the chain, but also serves as protection against unforeseen collapse when pulled.

The installation of the tensioner implies the simultaneous alignment of the device itself and the switch. The chain will run like clockwork: smooth and precise. But still, such a mechanism is not a panacea for the described problem. Sooner or later, you will have to carry out the process of removing the tensioner and adjust the chain by removing the links. Due to its physical properties, the chain will stretch over time, especially on a high-speed bike. But from the point of view of practicality, the purchase of a tensioner is necessary in order not to get into a difficult situation while traveling.

## How to replace a chain on a bicycle with your own hands

The need to remove / install a bicycle chain arises for various reasons. Someone regularly boils it in paraffin or wax, someone decided to carry out a comprehensive cleaning in a can of gasoline, and someone came to such a state that the chain on a bicycle slips under load and needs to be changed. How to do this is intuitively clear, but for whom the operation is new, it is difficult to do without explanations and answers to exciting questions.

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## What types of bicycle chains are found

All types of bicycles, regardless of their purpose, use the same chain design. Such a product is a single-row roller chain with a clearly marked pitch. 12.7 millimeters. In this case, a separate link includes:

• outer plates;
• internal elements;
• pins;
• rollers;
• videos.

The main difference between the chains is based on whether the speed is great or not. The number of speed modes determines the availability of suitable sprockets. This, in turn, affects the width of the bike chain. Also, a characteristic variety will be the presence of a specific lock or its absence. It serves to make it easy to dismantle the chain and reinstall it.

## How to increase the tightness of the bike chain on a single speed bike

So that the chain does not fly off again next time due to sagging, it is better to immediately increase its tension.

To do this: Loosen the nuts on the dropouts a little so that the rear wheel moves a little and pull it back. With the correct bike chain tension set, slowly tighten the nuts. Just do not skew the rear wheel and check that it rotates strictly in the vertical plane and does not touch the frame and wing feathers.

You don’t need to pull the bike too tight, the pedals will spin tight. There should be a slight slack, but a maximum of 1-1.5 cm.

If the rear wheel has nowhere else to move. remove one link.

## Adjusting chain tension on bicycles without gears

For bicycles to function flawlessly without speeds, their chain must not be too tight. It is necessary to ensure its free sagging for a length of up to 5 mm. And in order to pull in this way, you need to perform a certain set of actions in the correct sequence:

• Turn the vehicle over with the wheels up.
• Loosen the rear wheel. unscrew the nuts or fastening eccentrics.
• Adjust the chain slack to the required amount. To do this, you need to carefully move the wheel along the inclined grooves (dropouts).
• At the end of the adjustment, the wheel should be fixed in its original position again. In this case, the wheel axle must be parallel to the carriage shaft.

If the chain is too tight, it will become difficult to pedal. And the elements of the chain drive will very soon become unusable. It is also bad if the bike chain is too slack. She will simply jump off the stars at a certain moment and it will be impossible to go further.

When the wheel literally rested against the dropouts and there is absolutely nowhere to move it further, but at the same time the bicycle chain is dangling, you will have to remove a couple of links from it. In all likelihood, it was stretched or was not at all the size for a particular model.

## Bike Tension Adjustment 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 necessary to fix the rear wheel only 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 make a chain on a speed bike

Any vehicle needs maintenance. Bicycles are not exempt. Their key element in the transmission unit is the chain. Speed ​​bicycles are inherently finicky to function properly. The frequency of chain replacement or maintenance is largely determined by the riding style. For example, trial cycling enthusiasts do this while riding. When and how to change the chain on a speed bike?

Bicycle chains come in two types: lock and solid. Disconnecting the lock variation is not difficult. It is convenient to do this with a regular thread (wire), threading it into adjacent links (before and in front of the lock) and tightening the loop. The main thing is to avoid damage to the lock and not lose it.

Opening a continuous chain is possible only with a special squeeze, although the procedure itself also cannot be classified as complex tasks:

• It will be necessary to install the chain in the position of pressing out-pressing in the axle.
• Tightening the screw to pull out the pin.

Axial pressing is inherent in the opposite sequence: connecting the links and pressing the pin by means of a screw.

What tools are important to have to replace the chain:

• The key used to remove the rear wheel.
• Pliers to hold segments and pins.
• Squeeze. As noted above, this device is used to press out and press in the pins.

Cyclists who do not have sufficient experience in such matters are advised to memorize the general diagram, reflecting the location of the chain on the system, cassette, switches. Then the procedure for its subsequent installation will not cause difficulties.

As soon as all the nuances are fixed in memory (or on paper), you can proceed to further steps:

• Cleaning links from dirt accumulations. If this is not done, dirt will be a significant obstacle to the next steps.
• Removing the rear wheel. The absence of this detail simplifies all actions, although experienced craftsmen safely skip this stage. In fact, it does not apply to mandatory measures.
• Extrusion of the pin present in all links (the metal cylinder that closes the link). This is where the squeeze is applied.
• Removing the extreme links from the switch system.
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This completes the removal of the chain (worn out or requiring cleaning). The procedure itself is quite easy if you have a tool and basic knowledge. Accuracy of execution and the absence of forceful actions during the extrusion process are very important.

With bicycles that have one gear (singlespeeds), everything is limited to the canopy of the chain on the part of the star configuration and the locking snap-in or pressing in the pin. The design of high-speed bikes suggests some difficulties in this issue.

They can be designated by the following points:

• Locking derailleurs on small transmission sprockets.
• Next, a chain is put on the teeth of the stars. In this case, it is important to take into account the location of the rollers involved in its tension.
• Then the chain links are aligned.
• The chain is clamped and the axle is pressed in or the lock is closed.

At the final stage, the move is checked. For this purpose, the pedals are rotated. Incorrect installation is characterized by sagging of the installed element and difficult twisting. If this is not observed, the installation of the chain is done according to all the rules.

In what cases, in addition to wear, the chain is removed:

• For deep cleaning when it is necessary to remove lubricant and accumulated abrasive.

A failed chain stretches, its links shift, harming the sprockets, which negatively affects the switches. It is quite difficult to visually determine the degree of wear.

Therefore, they use a simple measurement, that is, you need to measure twenty-four links, or rather their total length:

• With a value of 30.5 cm, we can talk about the normal state of the chain.
• An indicator of 30.65-30.75 cm indicates the need for replacement.

By the way, cutting the stretched chain does not solve the problem. Stretching is characterized by an even distribution. In this case, damage to the stars cannot be avoided. As you know, stellar parts cannot be repaired. It is cheaper to change the chain than to replace more expensive components.

A video plot will tell you how to replace a chain on a bicycle

## How to adjust the chain on a speedy bike view.

A mountain, road or other type of bike that uses in its mechanism the ability to move the chain from star to star, requires a separate method of chain tension. In such a two-wheeled mechanism, there is no permanent fixation. The tensioning procedure is guaranteed by a spring located on the rear derailleur. When the chain starts to sag, your friend’s speed performance deteriorates and a knock is heard. If the chain is overtightened during the repair process, this leads to poor gear shifting and rapid wear of the stars.

At the beginning of the entire repair procedure, it is worth determining the condition of the chain with respect to sagging. This can be done in two ways.

We set the speed to the maximum front chainring and the same rear. In the area of ​​the front sprocket, pull the chain in the direction of the front wheel. As soon as the rear derailleur has reached the stop, we calculate the number of extra links. If there are two of them, then everything is normal. The rest of the indicators indicate that it is necessary to make adjustments.

We position the speeds so that the maximum front chainring and the minimum rear chainring are used simultaneously. In this case, the roller that guides and the one that pulls the rear cross-over must be aligned along the axis and be perpendicular to the surface of the earth.

The pull-up process consists in removing the links that turned out to be superfluous. We will consider how to do this in a separate paragraph.

When adjusting a speed bike, you can use a separate tool. the chain tensioner. Its main function is to manage rigidity and save its owner from unnecessary problems with the repair of the problem area.

The mechanical version of the chain tensioner is mounted next to the rear derailleur. The simple design of such a device not only clearly fixes the chain, but also serves as protection against unforeseen collapse when pulled.

The installation of the tensioner implies the simultaneous alignment of the device itself and the switch. The chain will run like clockwork: smooth and precise. But still, such a mechanism is not a panacea for the described problem. Sooner or later, you will have to carry out the process of removing the tensioner and adjust the chain by removing the links. Due to its physical properties, the chain will stretch over time, especially on a high-speed bike. But from the point of view of practicality, the purchase of a tensioner is necessary in order not to get into a difficult situation while traveling.

## How to properly tension the chain on a bike

Friends need to be loved. Even if they are two-wheeled. Such a relationship involves skilled caring for your friend. The chain is tensioned in the name of its safety and the life of the bike. Let’s analyze the question of how to tighten the bicycle chain correctly, quickly and efficiently.

## How to chain a bike

The chain is one of the most important structural elements for the movement of the bicycle. And its service life depends on the regularity and quality of care. An indicator that something is wrong with the bike chain is crackling and squeaking when driving, as well as slipping it on the ratchet.

In principle, it is normal for the chain to wear out over time. And chain stretching is a visual sign of wear. The fact that the chain has fallen into disrepair can be felt even tactilely. In the normal position, this part sags slightly (by 10 or 12 millimeters), and if you pull it slightly, it will yield another 10-15 mm. True, this method is relevant only for models that do not have high-speed switching or have a planetary type gear.

## What to do if the chain jumps off on a speed bike

A bicycle is a unique means of transportation. It does not pollute the environment, has a positive effect on the health of its owner, and allows you to experience physical activity in the fresh air. A bicycle is the first vehicle that a person gets in his life and for many it remains a favorite means of transportation for life. The most common problem faced by every cycling enthusiast is the chain flying off the bike. For what reasons this happens and what needs to be done to fix this problem, we will try to figure it out in this article.

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## Speed ​​bike problem

For a regular bike, this problem is easy to solve, but what if the chain jumps off on a high-speed bike? Among the most common causes of this problem are the following:

• deformation of one of the stars. Gear shifting on multi-speed bicycles is carried out using cassettes consisting of several stars. These designs are collapsible and non-collapsible. Replacement of a damaged sprocket is possible only in collapsible structures, if the structure is non-collapsible, its complete replacement is required.
• Mistakes in the setting of the derailleur can cause the chain to fly off the bike when shifting gears. Gear shifting should be fine-tuned. If the bike owner himself cannot do this, you need to contact a specialist, or carefully study the instructions for setting the bike speed switch. The safety of the cyclist depends on the quality of this function.
• Stretching the bike chain. This process is associated with long-term use of the chain, the application of high dynamic loads to it, irregular cleaning, due to which the residues of lubricants, mixed with dirt and dust, accumulate on the chain links. In this case, the chain must be shortened or replaced. To shorten the chain, you need to remove several links from it. This is done using a special squeeze tool. This simple tool is a must-have for every cycling enthusiast. With its help, the axle of the link (pin) in the lockless type bicycle chain is pushed out. If there is noticeable stretch on the bike chain and the service life is long, it will be more advisable to replace it completely. To maintain the chain in good condition, it must be periodically rinsed in kerosene and cleaned.
• Curvature of individual chain links as a result of which the chain flies off the bike.

## Loose chain tension on bicycles without gears

To eliminate the problem that has arisen, you need to understand why it has arisen and tighten the chain. This is done using special wrenches that every cyclist should have with them.

It is much easier to tighten the chain on a regular bike; in the case of a speed bike, it will be more difficult. For successful repair work, when the chain falls off the bike without speeds, you need:

• turn the bike upside down.
• If the rear wheel is attached with an eccentric, then you need to loosen it slightly, or not completely unscrew the nuts.
• Adjust the desired chain slack.
• Tighten the nuts.
• Check chain tension and quality of work.

## Rear wheel deformation

Perhaps the problem is the deformation of the rear wheel. One of the most unpleasant cyclist problems is the so-called eight. The figure eight is the deformation of the wheel, the violation of its shape and the inability to perform functions. This problem is eliminated by tightening and loosening the spokes with a special spoke wrench. For this, the wheel is removed, the affected area is determined and the central spoke of the figure eight is highlighted. Then the needles are pulled through one.

## How to increase the tightness of the bike chain

The case with high-speed bicycles is much more complicated. How to chain a bike at speeds?

The transmission unit for bicycles with speeds, of which the bicycle chain is an element, consists of cassettes with several sprockets. Therefore, the repair work to eliminate chain slippage and sagging on such bicycles has its own nuances. To understand the causes of the problem, you must:

• If the chain constantly flies on a high-speed bike, it is worth checking if the sprockets are not damaged. If one of the stars in the cassette unit is deformed, the chain can be thrown over another star to continue moving. But in this case, you need to understand that you cannot switch the speed. This method is suitable in order to get to the house for better repairs. To eliminate the breakdown, the deformed star will have to be replaced, and if the assembly is not collapsible and the entire cassette is malfunctioning, then it must be replaced.
• the chain flies on a high-speed bike; the reason is a failure of the speed setting. Check the quality of the setting. Very often, a failure in the speed setting will cause the chain to hit. The setting is made according to a special scheme.
• After eliminating the root cause, the chain must be put back in place.

To properly fit the chain on a speed bike, you need to disconnect it with a squeeze. If you take a new chain, then you need to measure the required length, for which the chain is thrown over the large stars of the cassette blocks and connected, measuring the required distance. The excess piece of the chain is removed using a special squeeze tool. By turning the screw, the link axis is pushed out and the unnecessary chain section is removed. Then the chain is passed between the speed switches and connected using the same tool.

If the chain flies on a children’s bicycle, then, depending on the design, the same actions are performed as with an adult bicycle.

A malfunction of the transmission unit on a high-speed bike can threaten the health and life of its owner, the cyclist can fly out of the saddle by inertia, so you need to remember to carry out preventive maintenance work on the chain, check the condition of the speed switch and the integrity of the main parts. It is especially important to carry out a technical inspection of your vehicle before starting to move, in the event that you make long cycling trips and crossings. Timely diagnostics of your bike is a guarantee of safety.