How to remove sprockets from a bike ratchet

Removing the ratchet from the bike

It is not always possible to correctly see the malfunction when the ratchet mechanism on the bike itself is not always possible, so the best solution would be to disassemble it.

Freewheel Removal & Installation

It will not be possible to simply remove the ratchet mechanism, so we need a special tool. a puller. With this simple device, the ratchet will quickly be removed from its rightful place.

Tool for removing and securing the ratchet

Before proceeding with the repair of the ratchet, you should correctly determine in which direction to unscrew the nut. It is not necessary to lean heavily to one side or the other, otherwise the thread of the sleeve can be rolled up. If the thread is right-handed, screw it up counterclockwise, and put it on clockwise.

Behind the nut is a row of balls, which can themselves fall out of the mechanism. They must be carefully removed, cleaned from dirt and set aside. The disassembled device is cleaned of excess grease and foreign particles with gasoline or thinner.

The same goes for transmission stars. If the stars of the entire system are not worn, and the problem is in the threaded ring, it should be pulled out of the drum and replaced. Along the way, the dog and the spring are changing.

After the bulkhead, the ratchet is put back on the rear wheel hub. To do this, you need to carefully place the bearing balls in their seats, firmly install the mechanism and tighten with a wrench on the bushing. If the ratchet does not work and there is an overshoot of the chain at idle, most likely a new part is needed.

  • Remove the old mechanism. This will not work without a puller, do not forget a special key.
  • Inspect the rear hub axle.
  • Mount the new part on the bushing.
remove, sprockets, bike, ratchet

If the output of the transmission mechanism is too high, it will be rational to supply a new spare part. In most cases, the problem of malfunctioning ratchets is solved by a simple bulkhead and cleaning of dirt. Finally, do not forget to lubricate the newly assembled parts.

The bicycle ratchet, popularly also known as the nut, is a ratchet mechanism that allows you to reliably transmit torque through the chain from the pedals and at the same time coast freely without the need to pedal continuously. This mechanism is assembled as a single piece with the rear wheel hub. Consists, in fact, of the ratchet itself in the form of a toothed drum with two pawls and a non-separable cassette of sprockets.

Simple maintenance of the bike transmission boils down to cleaning it from dirt and grass that gets clogged between the sprockets.

You will need to remove the ratchet from the bike in the following cases:

  • To adjust the tightening of the rear wheel hub bearings. You can not remove anything, but with the cassette of sprockets unscrewed, it is much easier to remove the ball bearings, determine the degree of wear of the cup, lubricate the assembly.
  • If possible, to replace broken dogs. Although such small parts are not sold individually, and most often you will need to buy the entire assembly, they can be removed from the old ratchet. Unfortunately, there are times when, as a result of the premature death of the dogs, the drum with asterisks either gets jammed, or it starts to rotate freely in both directions.
  • When the teeth of the smallest stars are worn out to the extreme or if one of them breaks.
  • To install the spoke into the rear wheel hub on the right side, to replace the broken.

How to remove the rear ratchet?

Before removing the rear ratchet, the rear wheel must be removed from the frame. To do this, raise it, shift the rear derailleur to the last speed (remember that after completing the replacement procedure, you will need to check and correctly adjust the front derailleur), and then unscrew the eccentric or nuts (depending on the hub design). Next, carefully pull the wheel out of the frame, which should also be matched to your height.

remove, sprockets, bike, ratchet

The next step is to remove the axle from the wheel hub. Take two adjustable wrenches. with one hold the nut in a fixed position, the other. unscrew the other nut.

Advice! Be sure to place the whip chain on the largest star. Turn the puller with one hand, with the other hand hold the whip, preventing the ratchet from turning with the adjustable wrench.

Practice shows that in most cases the bicycle owner is faced with a problem when the thrust nut has become attached to the ratchet body. To fix this problem, you need to use WD-40 spray. Spray the nut and let the wheel sit for five minutes. The liquid will corrode rust and dirt inside, after which you can safely remove the part from the sleeve.

remove, sprockets, bike, ratchet

As you can see, it is quite easy to remove this part. But before you disassemble the bike ratchet, we recommend that you get a special tool. Without it, given the design of the fasteners, it is almost impossible to dismantle the ratchet. After successful removal, you can proceed with further disassembly of the component, proceed with routine maintenance or replacement.

When to shoot?

In most cases, removal of this transmission element is necessary when the cyclist wishes to carry out routine maintenance (usually in the spring or fall). Removal will also be required when the teeth of the sprockets installed in the structure are heavily worn. Since the vast majority of ratchets have a non-separable design, replacement of new sprockets is impossible. they are riveted to each other.

It is urgent to dismantle the ratchet from the wheel if there is a situation when a sharp slip of the pedals is noted in the process of smooth pedaling. This effect is observed when the oil is incorrectly selected when you were preparing the bike for spring after storing it on the balcony in winter.

What is the difference between a ratchet and a cassette

Ratchet is a ratchet mechanism with a threaded or slotted mounting on the bushing. The ratchet is outside and the sprockets are completely installed. This means that the ratchet is put “on time”. when, say, small sprockets are worn out, only the worn part cannot be replaced. everything changes at once.

This type of knot was widespread in the last century, and now it can be found on a budget high-speed bike. Some of the disadvantages of the ratchet include:

  • a small number of stars. from 5 to 7 speeds;
  • low running resource;
  • for more hardy products, the cost will be many times higher.

Although, of course, repair, or rather, non-maintainability, is the main drawback. Most ratchets are threaded. An unpleasant feature of this mount is jamming. It looks like this: after a certain mileage, it will twist on the bushing so that it will be problematic to disassemble it later.

Ratchets and cassettes differ in mounting and pullers

Now about the cassettes. In fact, this is the same ratchet, only the ratchet is hidden inside the drum. It is installed only on splines, which is why it is sometimes problematic to switch from the ratchet (if that rare spline copy was not standing). In comparison with its “brothers”, the cassette drum mechanism has a number of advantages:

  • more stars. from 9 to 11 on modern models;
  • the system weighs less, which means the bike as a whole, too;
  • rolling resistance is noticeably less than that of a ratchet;
  • the cassette is easier to remove;
  • more mileage;
  • you can change the asterisks individually.

The last plus, of course, is the most significant, and we emphasize it once again: changing the system completely or only one or two stars is a huge difference! Well, there is only one drawback. the initial cost is higher. However, this again negates the very advantage. the ability to repair, and not buy a new one. Should you opt for a cassette tape? Definitely yes!

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Puller and key

Removing a long-established ratchet requires considerable effort. It can get stuck and rusty. Special tools must be available, which are a puller and a large adjustable wrench or wrench.

The puller is a slotted wrench for disassembling or installing the ratchet mechanism. It is unscrewed counterclockwise using a wrench or adjustable wrench. Ratchet and cassette tools are similar but completely incompatible, do not confuse them.

The rear wheel is removed first. If the ratchet has not been removed for a long time and it is difficult to remove it with a puller, then it is better to use WD-40 grease. It is better to lubricate the threads from the inside, under the stars, and leave for several hours.

How To Remove And Install A Freewheel Cassette Sprocket On A Bicycle

  • Further, the fasteners on the axle are unscrewed. Prepare a rag in advance to wipe off grease from the axle and not get dirty when performing repairs.
  • The puller is put on the nut. Secure it with a nut, if it dangles, and if it does not climb, hammer in.
  • It is better to place the wheel vertically and support it against the wall. It is not recommended to remove the tire, so as not to spoil the rim, and the rubber will help with its retention.
  • With an adjustable or wrench, the puller is unscrewed with small jerks. It is better to hold the key vertically and press on it from above. Spin counterclockwise.
  • We take out the puller and the system itself from the sleeve.
  • When removing, there may be a problem in the lack of effort to unscrew the stuck mechanism. This problem is solved by lengthening the tool. This can be done with a small tube. Take two bolts 6–8 cm in size and select the nuts for them. One is inserted into the hole in the puller, and the other into the hole in the handle of the adjustable wrench. Clamp with nuts. Insert a tube between the bolts. It turns out a lever with which it is much easier to rip off a stuck device.

    Why is it needed?

    The most common problem is chain wear. If not replaced in time, it will begin to bore stars. Everyone has their own favorite show that they use the most. Over time, the chain on it will begin to spin if a heavy load is applied. Therefore, you need to learn how to remove sprockets from the rear wheel of a bicycle. As soon as such a skill is acquired, you can fix any breakdowns yourself. This will save you a lot of money on workshop maintenance.

    Why is this necessary? You can remove the sprockets from the rear wheel of the bike for both regular lubrication and a complete replacement. They will also interfere if you need to replace the spokes on the right side or get to the hub itself.

    How to remove sprockets from the rear wheel of a bicycle?

    If this is a ratchet, then everything will be a little easier. If there is special equipment, then even a person who has nothing to do with bicycles can cope with this.

    This requires only 2 tools:

    • special puller;
    • adjustable wrench.

    First, of course, you need to remove the wheel. Then the stars are removed in two steps. It is necessary to insert the puller into the ratchet, and then try to turn it counterclockwise with a key.

    If the mechanism has never been removed, then it can twist strongly (such is its property) and not give in even under great efforts. Then you need to spray the miraculous WD-40 spray there from the thread side. If you leave it like this for a few hours, then the ratchet can be easily removed. It should also be remembered that the larger the lever, the greater the effort. Therefore, you need to take the largest adjustable wrench. Do a couple of jerks and the ratchet will unscrew easily.

    You will need another tool to remove the cassette. It’s called a whip. This is a handle to which a piece of a bicycle chain is attached. If you turn the cassette counterclockwise, it will start to rotate. This is where this whip will come in handy, which will hold her. Some craftsmen simply use a piece of an old chain instead of this tool. Then everything is the same as when removing the ratchet.

    The difference between a ratchet and a cassette

    Before removing the sprockets from the rear wheel of a bicycle, you need to decide on their design. It is important to distinguish between ratchet and cassette. Although they are similar in appearance, they are very different inside.

    In the ratchet, the freewheel is installed together with the sprockets. It is such a monolithic system that is simply screwed onto the bushing. The cassette can be disassembled, so one worn sprocket can be replaced. Unlike a ratchet, it is not a monolith with a freewheel mechanism, but is put on it.

    You will need different pullers to remove them. It is important not to confuse them with each other, because they are not interchangeable. They have different splines. If you are still afraid not to distinguish a ratchet from a cassette, a photo will be an excellent tip in this matter.

    How to remove sprockets from the rear wheel of a bicycle: step by step instructions

    With active riding, the bike gradually wears out. To avoid this, you must constantly look after him. On high-speed bikes, one of the most vulnerable spots is the rear of the drivetrain. Therefore, sometimes it needs to be replaced. How to remove sprockets from the rear wheel of a bicycle?

    How to remove sprockets from the rear wheel of a bicycle without a puller?

    For such an operation, you do not need to purchase a special tool. True, it is much easier to deal with him. In order to remove the ratchet without a puller, you will need:

    • gas wrench;
    • center punch;
    • a hammer.

    The ratchet has 2 slots. You need to insert a center punch there and hit it with a hammer. You need to direct it clockwise. You can use a large nail instead. You have to be careful, as there are bearings under this place. With a little effort, you can screw the sprockets.

    There is still the inside of the ratchet. It is removed with a gas wrench, which is turned counterclockwise.

    In this article, you will learn:

    Ratchets are too easy, but you need to know how to unscrew and tighten them correctly.

    Cassettes are even simpler than ratchets. But you need to know how to choose them correctly.

    A ratchet is a ratchet and sprocket mechanism that transfers torque from the chainrings to the rear wheel. Ratchets are both threaded and slotted. Very often, the word “ratchet” means a threaded ratchet. This “thing” was installed on the top bicycles of the mid-20th century and on the simplest bicycles of our times.

    Why Threaded Ratchet? It turns out that in the threaded ratchet the ratchet is mounted outside the sleeve. Such a system is unreliable and outdated. At the same time, ratchets are the simplest and cheapest. The cost of a ratchet that can roll over 3 thousand km. no problem. about 10, which is very nice for the ?

    In practice, it is worth noting that the stars then wear out faster than the ratchet mechanism itself, and the disadvantage of such a mechanism is the impossibility of replacing individual stars. Although, it is very convenient and cheap, when you constantly ride a 5-6 star, it has worn out and instead of replacing the cassette, you only change one or two stars. The disadvantages of ratchets include a small number of stars. Ratchets have 5 to 7 stars as standard. Some unique threaded ratchets have 8 stars.

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    And we have not yet indicated all the disadvantages of ratchets. We want to warn you that most of the disadvantages will only be noticeable to experienced cyclists, so you should read carefully.

    As the pedals are rotated, the ratchet spins onto the thread of the sleeve each time. stronger and stronger. Sometimes, then unscrewing the ratchet is almost impossible! There are two ways to unscrew the ratchet.

    The first is a wrench spline bushing. This bushing is inserted into the slots inside the ratchet, and unscrewed with a wrench. In practice, there are several broken spokes, and sometimes the splines are torn off. We know a unique method for unscrewing the ratchet with such a puller. Soon, we will post a video where the principle of removal will be shown, but for now we will describe in words. We need the puller itself and a vise securely attached to the table. The splined part of the puller is inserted into the ratchet, and the hexagonal part of the puller is clamped in a vice. As a result, the wheel takes a horizontal position, it looks like a steering wheel. Next, we take the tire with both hands on the edge of the wheel and unscrew the wheel. It is because of the large lever and two-handed grip that the spokes remain safe and sound.

    The second method is with a handle-shaped puller and pieces of chain. Please look at the photo. Of course, the price of such a puller leaves much to be desired.

    But when installing the ratchet, the main thing is to get on the thread. After all, the thread pitch is small, and the likelihood of damage to the thread is high. The most important thing is that you will only notice this when you screw it to the end and you will see the skew of the ratchet. Be careful and wind the stars smoothly.

    We see no point in disassembling the internal ratchet mechanism. It’s not worth it, and then collecting is problematic. We advise you to sprinkle a little WD-40 grease into the ratchet mechanism, and then pour silicone grease, this will be quite enough.

    How to remove sprockets from the rear wheel of a bicycle without a puller?

    For such an operation, you do not need to purchase a special tool. True, it is much easier to deal with him. In order to remove the ratchet without a puller, you will need:

    The ratchet has 2 slots. You need to insert a center punch there and hit it with a hammer. You need to direct it clockwise. You can use a large nail instead. You have to be careful, as there are bearings under this place. With a little effort, you can screw the sprockets.

    There is still the inside of the ratchet. It is removed with a gas wrench, which is turned counterclockwise.

    Most multi-speed bicycles have a simple rear hub, which contributes to the lightness and smoothness of the ride. How a bike rides depends not only on the geometry and shape of the frame, but also on the state of the transmission system. over, it is the rear bushing that is most loaded, since it has a complex device. It holds a ratchet or cassette.

    is it possible to put a cassette instead of a ratchet

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    With active riding, the bike gradually wears out. To avoid this, you must constantly look after him. On high-speed bikes, one of the most vulnerable spots is the rear of the drivetrain. Therefore, sometimes it needs to be replaced. How to remove sprockets from the rear wheel of a bicycle?

    Removing and Installing a Freewheel

    Puller and key

    Removing a long-established ratchet requires considerable effort. It can get stuck and rusty. Special tools must be available, which are a puller and a large adjustable wrench or wrench.

    The puller is a slotted wrench for disassembling or installing the ratchet mechanism. It is unscrewed counterclockwise using a wrench or adjustable wrench. Ratchet and cassette tools are similar but completely incompatible, do not confuse them.

    • The rear wheel is removed first. If the ratchet has not been removed for a long time and it is difficult to remove it with a puller, then it is better to use WD-40 grease. It is better to lubricate the threads from the inside, under the stars, and leave for several hours.

    When removing, there may be a problem in the lack of effort to unscrew the stuck mechanism. This problem is solved by lengthening the tool. This can be done with a small tube. Take two bolts 6–8 cm in size and select the nuts for them. One is inserted into the hole in the puller, and the other into the hole in the handle of the adjustable wrench. Clamp with nuts. Insert a tube between the bolts. It turns out a lever with which it is much easier to rip off a stuck device.

    Cassettes not for a tape recorder ?

    The cassette has the same ratchet and stars, the difference is that the mechanism has been moved to the hub. Cassettes are designed for spline-mounted bushings, which are a negative factor, since when switching to a larger number of stars, the bushing must also be changed, from threaded to spline. But cassettes, or drums (as they are also called) have a huge number of advantages and, in our opinion, there is only one drawback. the price.

    By the way, we see no point in describing the problematic removal of cassettes, since these are isolated cases. But we will be happy to answer in a comment to someone who will be really interested in this question.

    The clamping nut provides secure fastening of the cassette to the splines of the bushing. In quality bicycles, this nut is lubricated with a special thread sealant to prevent self-loosening. That is why we advise you to heat the nut with an industrial hair dryer before unscrewing it. Also, when removing, it will be necessary to fix the stars so that they do not scroll. This is possible thanks to a special whip.

    Here we come to the end of the article. Today the velo-travel team decided not to overload you with a large amount of information. After all, everything is simple. What to choose for your bike? It’s up to you to decide. If you are not an avid cyclist and use a bike without too much stress. the threaded ratchet is enough for you! It is reasonable to purchase cassette cassettes only for constant participation in competitions, or for serious hikes.

    Thank you all for your attention, and may your bike horse never let you down!

    Why is it needed?

    The most common problem is chain wear. If not replaced in time, it will begin to bore stars. Everyone has their own favorite show that they use the most. Over time, the chain on it will begin to spin if a heavy load is applied. Therefore, you need to learn how to remove sprockets from the rear wheel of a bicycle. As soon as such a skill is acquired, you can fix any breakdowns yourself. This will save you a lot of money on workshop maintenance.

    Why is this necessary? You can remove the sprockets from the rear wheel of the bike for both regular lubrication and a complete replacement. They will also interfere if you need to replace the spokes on the right side or get to the hub itself.

    How to remove sprockets from the rear wheel of a bicycle?

    If this is a ratchet, then everything will be a little easier. If there is special equipment, then even a person who has nothing to do with bicycles can cope with this.

    READ  How to adjust the front wheel on a bike

    This requires only 2 tools:

    • special puller;
    • adjustable wrench.

    First, of course, you need to remove the wheel. Then the stars are removed in two steps. It is necessary to insert the puller into the ratchet, and then try to turn it counterclockwise with a key.

    If the mechanism has never been removed, then it can twist strongly (such is its property) and not give in even under great efforts. Then you need to spray the miraculous WD-40 spray there from the thread side. If you leave it like this for a few hours, then the ratchet can be easily removed. It should also be remembered that the larger the lever, the greater the effort. Therefore, you need to take the largest adjustable wrench. Do a couple of jerks and the ratchet will unscrew easily.

    You will need another tool to remove the cassette. It’s called a whip. This is a handle to which a piece of a bicycle chain is attached. If you turn the cassette counterclockwise, it will start to rotate. This is where this whip will come in handy, which will hold her. Some craftsmen simply use a piece of an old chain instead of this tool. Then everything is the same as when removing the ratchet.

    What is a ratchet?

    Ratchet is a ratchet mechanism consisting of a freewheel, sprockets and a threaded ring. The design transfers rotation from the pedals to the wheel through the chain, while simultaneously allowing movement without the need to pedal. It is screwed onto the threads of the axle of the rear hub of the bicycle. If the sprockets wear out, they unscrew and change completely to new ones.

    Cassette and ratchet should not be confused. In modern bicycles, they began to use a cassette. a device that is more advanced than a ratchet. The design consists of stars assembled together, which are put on the sleeve and secured with a nut, and the holes in the middle are equipped with grooves with which it clings to the drum. Inside the drum there are pawls, springs and a ratchet. It is easier to remove the cassette and replace the unusable sprockets with new ones. It can be easily dismantled in any conditions, and the removal of the ratchet is best done on a workbench. This requires not only a special tool, but also significant physical effort. The impossibility of repair is its main drawback. Plus a small number of stars and fragility.

    It just works. The system has a pawl that engages the rear of the transmission mechanism, at which time a slight crackling sound is heard. From this cod comes its name. If there is no sound, it means that it will pull the chain forward when the pedals do not rotate.

    Procedure

    Step-by-step instructions for parsing:

    • The bike is installed with the wheels upwards and is in a stable position. The bike must stand on a flat surface and not carry out additional movements that can adversely affect the removal of parts;
    • We remove the wheel located at the back, this can be done using a wrench of the appropriate size. The chain for parsing the star is removed in order not to interfere;
    • Use a whip to fix the cassette in one place, untwist the cassette itself using a puller put on the nut;
    • After that, we remove the plastic ring, which serves as a kind of protection and establish a further front of work (directly install a new one or try to clean and lubricate the parts).

    A little about singlespeed

    To remove the rear transmission sprocket from a single speed bike, you only need to open the retaining ring. Among singspeed lovers, you can hear that the regular ring is useless and can break itself, even if you did not think about changing the star. Perhaps this is so. In any case, if the stopper is damaged, we change it to a new one, otherwise backlash cannot be avoided (the chain simply dangles from side to side).

    It is also very simple to assemble such a structure: the ring is literally put on its own, you don’t even need to squeeze it. It’s that simple on single-speed bikes! You shouldn’t just wedge yourself into the transmission of a bicycle with one gear. Common reasons are a badly worn part or the need to install a new sprocket with a larger diameter.

    As you know, without serviceable stars and a chain, a great will not even be able to get under way. Timely replacement of transmission system components is the most important component of any type of bike repair. from simple two-wheeled road bugs to road and mountain superbikes.

    Why is it needed?

    The most common problem is chain wear. If not replaced in time, it will begin to bore stars. Everyone has their own favorite show that they use the most. Over time, the chain on it will begin to spin if a heavy load is applied. Therefore, you need to learn how to remove sprockets from the rear wheel of a bicycle. As soon as such a skill is acquired, you can fix any breakdowns yourself. This will save you a lot of money on workshop maintenance.

    Why is this necessary? You can remove the sprockets from the rear wheel of the bike for both regular lubrication and a complete replacement. They will also interfere if you need to replace the spokes on the right side or get to the hub itself.

    With 7 stars

    To dismantle, you must make sure in advance that there is a retaining ring and become familiar with the technology of clamping all the sprockets to each other. In budget transmission models, the sprockets are not bolted, but rigidly connected with rivets. Unmaintained specimens can be thrown away immediately if something happens to their teeth.

    Removing and installing a star on cassettes

    Unlike ratchets, in this system the stars can be changed individually. All that is needed is to remove the old part and put a new one in its place. Special rivets and small spacers are located between the stars, which allow them to hold a fixed position and facilitate the installation of the cassette itself. It is very easy to screw the desired star from the device, the main thing is not to get confused in the sequence, especially on large cassettes of high-speed mountain bikes.

    Sometimes “spiders” can be found on cassettes. rigidly fixed areas of several stars. Here you will have to replace the entire set, on which one of the stars is badly worn out. True, this only applies to large transmission rear wheel sprockets.

    When replacing a single chainring, you may encounter the problem of the difficulty of switching the chain to it. This is due to the fact that the chain already has wear compared to the new sprocket. And if this is not so noticeable with one detail, then several new stars will immediately bring a tangible dissonance to the operation of the transmission. That is why it is advisable to change the cassette at the same time as the chain.

    How to change sprockets on a bike?

    The bicycle is becoming more and more popular nowadays. This is due either to paid parking and the high cost of gasoline, or to the currently fashionable healthy lifestyle.

    But almost everyone loves to ride a bicycle, but not everyone knows how to properly care for it. Naturally, over time, parts fail and they should be replaced with new ones or serviced.

    In this article, we will talk about bicycle sprockets and how you can disassemble and care for them.