How to insert a pin into a bicycle chain

Bicycle chain shortening instructions

It is usually necessary to shorten the chain when it sags. after long use, heavy load, or when changing the set of sprockets. How to shorten a bicycle chain and how to determine the correct length?
It’s simple:

  • Switching to the largest stars in the front and back.
  • Opening one link in the chain.
  • We tighten the chain as much as possible so that the caliper is in a horizontal position.
  • Add one pair of links and get the desired length.

We check the performance

  • The pressed roller itself. If there are squeaks or problems with mobility on the link, set the plates in place, bending the chain along the plane of the link until the clicks stop, there is enough hand strength, no tool is required.
  • The whole shortened chain. We try to make a few turns on the smallest stars. if there are problems, it will be noticeable right away.

For a chain of a repeating type (half-link, with one pair of repeating plates). the process is simplified, there is no need to choose a pairing. You can shorten the chain of lightweight models and some sports options only with a specialized tool, and the procedure for shortening is described in the proprietary documentation.

Disconnect

  • Install the squeeze so that its core is exactly in the center of the pin (roller).
  • Smoothly rotate the squeeze handle until the roller comes out to the level of the second inner plate.
  • Disconnect the link without removing the pin to the end.

Tool

Internet experts and connoisseurs of Soviet tales usually recommend a nail and a stone, but progress does not stand still and it is better to purchase a chain squeeze (chaintool). a simple tool that resembles a child’s vice without a bed, which can be purchased for 500-1000 r.

It makes sense to keep the squeeze in a backpack only during difficult multi-day hikes, usually this is a workshop tool, so when choosing, you should not pay attention to light versions and squeezes in multitools. they are usually unreliable and are thrown away after 5-10 uses.

If there is no squeeze nearby, a hammer, a couple of nuts and a nail will help, but more on that later.

Removing unnecessary links

  • We fix the required length and determine the pin for squeezing, taking into account that the released link plates coincide with the plates of the already squeezed.
  • We repeat the sequence from p., Completely squeezing the roller.

We connect

We reduce the chain and carefully, centering the squeeze at the start and controlling the process every 0.2-0.3 mm, press the pin into the link released in the p.
Some people prefer to remove the chain. in this case, before connecting, you should check if it is threaded into the switches.

Sequencing

Consider how to shorten the Gall bike chain (this is what is used on 95-99% of all modern bicycles).

How to remove and shorten a bicycle chain

If your bike chain is new or has significant slack, it is likely too long for your bike. Therefore, you need to adjust its length first. Links also tend to stretch over time, however, you do not need to shorten the chain to solve this problem. Stretching is a sign of wear and as soon as the value on the stretch gauge exceeds the recommended maximum, it must be changed immediately. Otherwise, you run the risk of quickly wearing out the stars, as well as breaking the switches. And breakdowns, as a rule, happen at the most inopportune moment.

Determine if the chain needs replacing.

Count 12 links and measure their length from the first to the last pin (contact). The distance between these contacts should be 30.5. If the measured distance is more than 30.80 centimeters, then you need to replace the chain. This method is effective, since each link stretches during wear.
If the 12-link spacing is correct and you have an old bike, try loosening the rear wheel and pulling it back. In this way, the sag formed after long-term use of the bike can be removed. If the distance to which it is possible to move the wheel is not enough, then the chain must be shortened.

Buy a universal chain puller if you don’t have one.

This tool pushes out the pins so that the link can be removed. It is also called twisting or squeezing. If you know the make and model of your bike chain, you can find a specialized tool. Also, there is a tool with the same name, but for removing the chain, which has a lock. This device is similar to a pair of pliers / nippers, but with small metal “tendrils” at the ends.
Some chains, especially most of the higher grade Shimano and Campagnolo models, also require a special lock for assembly. You will not be able to connect the chain without this lock, so make sure you have everything you need before starting repairs.

insert, bicycle, chain

Place your bike on a bike rack.

If you don’t have a stand, lean it against something sturdy, preferably with its wheels upside down. Ideally, hang in a bike rack. This will make it easier to remove the old and install a new chain.

Clean the chain if it is dirty.

Use a high quality biodegradable chain cleaner or isopropyl alcohol to dissolve dirt or grease. Cleaning will make it easier for you to find the connecting pin or lock on the chain. And it will be easier and more pleasant to work.

Find a lock or connection pin.

Your chain may or may not have a lock or the aforementioned pin. The lock is easy to spot because it is usually slightly lighter / darker than the other links in the chain. It can also have a slightly different shape than the rest of the links, have a special plate with a latch groove. This plate usually has an oversized oval hole around one or both pins. To remove this type of chain, you will need the aforementioned pliers-like tool.
As for the connector pin, it usually sticks out slightly more on one side, or has marks from previous strips. In addition, if your chain does not have a lock, you can use any link to release it with a squeeze. And already during installation, put the lock, or leave everything as it was.

Pedal until the connecting link is between the chainrings and chainrings.

This will make it easier to access. Next, use the appropriate tool from those we mentioned above. Open the lock / squeeze the pin, and put it where this part will definitely not get lost. There are many designs and options for locks. Some pivot so the pin pops out, while others open when bent. Some are also disposable and can only be removed by bending them with pliers or a special tool.
Check the sides of the chain for brand and model information. Visit the manufacturer’s website to find information on the specific model of your lock.
Attention! If you do not have a lock and are using a twist, do not squeeze the pin all the way out. It is necessary that the edge of the pin remains inside the “cheek” (the side of the link). Otherwise, later it will be very difficult for you to insert it back and you will have to use one more link.
In many cases, you will not be able to replace a pin if you push it completely out of the link. However, some manufacturers (including Shimano and Campagnolo) make replacement pins, but not all of them are compatible with all chain models.
If you accidentally pushed the pin all the way out, you may be able to push it through the center of the link. Using a chain tool, pry off the top of the link, then push the pin back through the link until the top of the pin is flush with the center of the link. Replace the top of the link, then use a chain tool to push it up. Adjust the adjacent pin if necessary.
Please note that this method is “emergency” and time consuming. It is better not to lead to such a situation and make sure that the pin does not fall out of the “cheek”.

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Determine how many links you need to remove.

Use A Bike Chain Tool With A Shimano Connecting Pin

It is better to take off less at first than to take off too much. It will be easier to remove a few links later than add the missing ones again. Remove excess links to cut the chain. If your goal is to shorten, not replace, the chain, continue to remove the excess links as described above. Remove the minimum number of links required. usually less than 5. The more you shorten the chain, the more stress the links and will have to be. accordingly, the faster your chain will become unusable (stretched).

Tighten the link gradually until you feel the pins click into the lock.
If your chain has a disposable lock or special pin, you will need a replacement part to reinstall the chain. Most of these special locks have 2 parts that go in from opposite sides, but it is better to look for instructions for a specific model.

Connect the chains with a chain tool.

If your chain does not have a lock and you do not want to use one (or this design will not fit your chain model), connect the ends with a pin. If you are using a new chain, then squeeze a pin on it as described above and then clamp it, connecting it to the other end. To do this, place the link back into the chain squeeze slot. Make sure the pins are facing the squeeze pin. Turn the knob counterclockwise. As you turn, the chain tool pin will start pushing the link pin back. Continue until you see a small part of the same pin on the other side. Ideal if you can align this pin just like the rest of the chain. In addition, it should protrude the same distance on both sides of the link.

Move the pin if necessary

Sometimes you will have to work the chain from side to side to move the pin and give the chain the necessary flexibility and smoothness.To do this, grasp either side firmly with both hands and carefully work the chain perpendicular to the direction of rotation until it looses and begins to spin stably. This is called breaking the link. Failure to do so can cause the connector to click, spin poorly on the stars, and slightly get stuck in the derailleurs. And the chain will wear out faster.

Apply high quality chain lubricant.

This will increase the chain’s life and flexibility. It will also improve shifting performance and reduce wear on derailleurs and sprockets. Lubricating your chain will increase its lifespan.

Here are some more tips to help you care for your iron horse:

2) If you cycle regularly, check your chain every few months. The longer you delay replacing, the more damage it will do.

3) If the chain is too tight and difficult to remove, operate the gear selectors so that the chain on the rear and front sprockets is on the smallest sprocket. This will release tension and make the process easier.

4) If you do not have a suitable spare part, do not rely on temporary solutions, and do not try to fix the breakage / shortage with the help of available tools. It can surprise you unpleasantly if the chain breaks along the way, and is also dangerous in the long run.

5) Finally, try to check the chain frequently for tension and also lubricate the entire transmission.

How to properly shorten a bike chain with and without squeeze

Many people are fond of cycling at the amateur level. But a suddenly sagging chain can seriously ruin the pleasure of a walk. To prevent this from happening, you need to properly care for the vehicle, as well as find out in a timely manner how to shorten the chain on a bicycle and purchase all the tools necessary for this. The work can be done independently, following the recommendations of specialists.

Why disassemble the chain

Only the chain, tensioned without slack or distortion, ensures efficient transmission of torque from the pedals to the rear bicycle axle. The need to disassemble and shorten it may be due to the following reasons:

We connect

We reduce the chain and carefully, centering the squeeze at the start and controlling the process every 0.2-0.3 mm, press the pin into the link released in the p.
Some people prefer to remove the chain. in this case, before connecting, you should check if it is threaded into the switches.

Disconnect

  • Install the squeeze so that its core is exactly in the center of the pin (roller).
  • Smoothly rotate the squeeze handle until the roller comes out to the level of the second inner plate.
  • Disconnect the link without removing the pin to the end.

Take the survey

  • Replacement due to severe wear or breakage. The new chain is standard 114-116 links. On ordinary road bikes, it is usually used entirely, on mountain bikes, it has to be shortened by 8-10 links. Only the required minimum is left on the trial bike.
  • Constructive changes. After upgrading the bike, the chain often begins to dangle, spin, fall off the sprockets, despite quality care.
  • Sagging due to long-term operation, intensive load, changing the set of sprockets.
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To determine the optimum length, you need to shift gears so that the chain rests on the largest sprocket at the front and rear. Then the links are opened, pulling it all the way. After making a mark, add 2-3 more links to prevent increased stress on the transmission.

Chain replacement may be required due to severe wear or breakage.
Quite often, the chain starts to loose or twist after upgrading the bike.
Chain slack is possible due to long-term operation or changing the set of sprockets

With squeeze

To open the circuit with the master link and shorten it, you need to proceed according to the following instructions:

  • Place the bike on a rack. In its absence. on any hard flat surface with wheels up.
  • Thoroughly clean the chain from dust, dirt, grease residues using rags and kerosene (or another suitable agent).
  • Find the closing link (“lock”). Manufacturers usually make the task much easier by making it a little darker or lighter than others. Another distinguishing feature is the presence of protruding rollers, fastened by an outer plate, and a large oval hole around 1-2 of them.
  • Rotate the pedals by moving the master link between the gears. This greatly facilitates access to it.
  • Open the bike chain master link. Structurally, this can be done in different ways, so you need to read the instructions in advance. Most often, the roller is removed by hinge rotation or the link is opened by bending. Less often it is disposable, then you need to remove the element, for example, with needle-nose pliers.
  • Determine how many links need to be removed. It is better to remove less than overdo it. Installing them back is problematic for beginners.
  • With a clamp or a squeeze clamping mechanism, fix the next link from the end of the chain from which the closing.
  • Place the squeeze pin exactly over the roller of this link. Start squeezing it out by smoothly turning the handle clockwise. It cannot be completely removed, otherwise it will be almost impossible to assemble the chain later. The roller should appear on the outside, but still be firmly attached to the inside of the link.
  • Repeat with the second roller, completely disassembling this link. Remove the outer plate, allowing access to the central part, where the next is fixed. Continue until the required number of links is removed. Before you shorten the chain of a speed bike, you need to make sure that after removal, there are different types of links at the ends. The narrow one is inserted between the “ears” of the wide one. To disassemble a bicycle chain without a lock, you can start from any link.
  • Assemble the shortened chain by placing a “lock” at both ends. It is more convenient to do this with pliers and a screwdriver. Align them so that the rollers can click into place. If the closing link is disposable, it is necessary to purchase a new one in advance.
  • Install both links into the outer slot on the squeeze so that the rollers “look” towards its pin. Rotate the knob counterclockwise until the head appears on the opposite side. The length of the protruding parts of both rollers must be the same.
  • Loosen the chain slightly by inserting a link into the inner slot of the squeeze and pressing the pin against the roller. Turn the handle about a quarter of a turn.
  • Apply a thin, even layer of lubricant to the chain.

In order to connect a chain of certain brands, such as Shimano and Campagnolo, after shortening, special rollers are required for its assembly. If they are absent, it makes no sense to start the procedure. it will still not work to assemble the links into the chain again.

Place the bike on a rack, and if there is no rack, on any hard, flat surface with the wheels up
Thoroughly clean the chain from dust, dirt, grease residues using rags and kerosene (or another suitable agent)
Find the master link (“lock”)
Rotate the pedals by moving the master link between the gears to make it easier to access
Open the master link following the instructions
Determine how many links need to be removed
With a clamp or a special mechanism, fix the next link from the end of the chain from which the closing
Place the squeeze pin exactly over the roller of this link and squeeze it out by smoothly turning the knob clockwise
Repeat the action for the second roller, completely disassembling this link
Using pliers and a screwdriver, assemble the shortened chain by placing a “lock” on both ends
Install both links into the outer slot on the squeeze so that the rollers “look” towards its pin
Slightly loosen the chain, install the link in the inner slot of the squeeze and press its pin against the roller
Apply a thin layer of lubricant to the chain

Required tools

Experts in the field of various life hacks and those who started cycling back in Soviet times, in order to break the chain, recommend using a stone and a nail. But, since progress does not stand still, a special tool has long been created for this. a chaintool. It resembles a small vise without a bed.

Practice shows that pomace in “multitools” (especially in cheap ones) withstand a maximum of 3-5 applications. Therefore, for a multi-day hike in terrain with difficult terrain, it is better to have a high-quality tool made of high-strength steel in your backpack.

The mechanism of action of the pomace is extremely simple. The existing stop does not allow the plates of the links on the chain to deform and bend in the process of pushing out the connecting pin (pin). The swivel screw pushes it out without significant force.

In addition to the main tool, in order to shorten the bicycle chain, you will need rags, kerosene and any lubricant (for example, WD-40). Before starting work, it is necessary to thoroughly clean the gearshift mechanism. “Non-professional” devices. a hammer, nuts, nails and so on are used only as a last resort.

Squeeze
Kerosene
WD-40

We check the performance

  • The pressed roller itself. If there are squeaks or problems with mobility on the link, set the plates in place, bending the chain along the plane of the link until the clicks stop, there is enough hand strength, no tool is required.
  • The whole shortened chain. We try to make a few turns on the smallest stars. if there are problems, it will be noticeable right away.

For a chain of a repeating type (half-link, with one pair of repeating plates). the process is simplified, there is no need to choose a pairing. You can shorten the chain of lightweight models and some sports options only with a specialized tool, and the procedure for shortening is described in the proprietary documentation.

READ  How to adjust the chain on a speed bike

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 no sagging or obstruction is observed 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 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.

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

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.

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

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.

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 install a double pin chain lock

To close this lock, you need to rest against the pin and the cheek of the lock from the side where there is no cut. We press with pasatizh, and the lock is installed. If there are no passages, use a screwdriver. We rest with a screwdriver on the edge of the cheek, where there is no cut, and press until the lock closes.

Advantages and disadvantages

  • The design is easy to use.
  • The lock allows you to quickly assemble and disassemble the element.
  • The chain can be easily removed and reinstalled.
  • Some locks can fit different bike models, thereby saving human costs.
  • Low strength. This is due to the ability to disassemble, which makes the mount unreliable.
  • Risk of breaking the chain where the lock is installed.

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 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.

View 3: Spring Loaded Chain Lock

One of the most difficult to install and remove locks, it brings a lot of problems. This lock is found mainly on Shimano chains in the following models: HG91, CN-HG70, CN-HG50, CN-UG51, CN-HG40, CN-UG51, and the KMC Z610RB also has such locks.