How to remove gears from a bike

How to remove the front wheel on a bike

Before starting work, you should determine the type of brake system of the bike, if rim brakes are installed on the bike, then you should release them, otherwise they will not allow you to remove the wheel. To release the brakes, you do not need to loosen the cable, just squeeze the brakes with your hand and pull out the metal corner of the cable. In this case, it will not be necessary to readjust the brakes. If the bike has hydraulic brakes, then it should be borne in mind that such a bike cannot be kept upside down for a long time. All other types of brakes, disc and drum, do not participate and do not interfere with the removal of the wheel.

How to release the rim brakes on a bicycle


So, we figured out the brakes, now you need to turn the bike over and put it on the saddle and handlebars. Be careful if there is an attachment on the handlebar to avoid damaging it. It is worth either placing something under the steering wheel, or relaxing and turning the equipment over.

Here we come to the immediate removal of the wheel. If the wheel is attached with an eccentric, then no tool is needed to loosen it at all; you can loosen the eccentric manually. If the wheel axle is fastened with nuts, then an open-end wrench is needed, usually 15.

Wheel fastening with nuts

Fastening the wheel with an eccentric

How to remove a bicycle wheel

It is quite common for every cyclist to need to remove a wheel on his bike. This may be due to a puncture of a wheel, repair or replacement of old rubber with a new one. This procedure is perhaps the most common of all those related to repair or maintenance.

remove, gears, bike

Often, beginners who have never experienced a self-repair of a bicycle are wary of the procedure for removing a wheel, especially if it is a sports, speed or mountain bike. The presence of gearshifts and handbrakes is a warning to inexperienced cyclists. And if a high-speed bike has a rear derailleur mounted on the rear wheel axle, then the removal process becomes even more complicated.

Axle Mounted Rear Derailleur

Frame Mounted Rear Derailleur

How to remove the rear wheel of a bike

Removing the rear wheel is as easy as removing the front wheel, only you first need to remove the chain from the sprocket. If the rear derailleur is attached to the frame or to the frame via a cock, it does not need to be removed. But if the switch is with a hook mount (found on budget models), then it is attached directly to the wheel axle. Therefore, before removing the wheel, you will also need to remove the switch. It is important to remember how it is attached so that there are no problems with installing it back.

Replacing Shifters/Brake Levers/Cables/Housings On Trek 4300 Mountain Bike

How to put a wheel on a bike

If you removed the wheel from the bike, then, of course, you will have to put it back on. This must be done in the reverse order as it was filmed. It is important to consider the direction of movement of the wheel, the direction is indicated on the tire. If you do not follow the direction, then this will ultimately lead to the formation of an eight. When determining the direction of travel, do not forget that the bike is upside down.

Perhaps this is all that we wanted to tell you about how to properly remove and put a wheel on a bicycle. If you have any questions or you want to add something to our article. write in the comment block below.

How to remove a sprocket from a bike

The sprockets of a speed bike are the main parts of the gearshift system that provide the gear ratio of the drivetrain. According to the degree of influence, they are divided into leaders and followers. The first ones are located at the connecting rod pair and are called the system. The driven ones are located on the rear wheel hub and are divided into cassettes and ratchets by design.

remove, gears, bike

Over time, the stars wear out, as a result of which they need to be completely or partially replaced. The second option is more common in practice, since the wear is uneven. The most frequently used transmissions are subject to it. The problem, of course, requires a timely solution, otherwise driving will turn into torment. The chain will seize or skip worn stars. Many modern models allow you to remove the sprocket and put it separately on the system or cassette without replacing the entire assembly. Read on how to do this.

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How to remove and put a system star

The system is a set of three chainrings. If you often have to ride at speed, then most likely the largest sprocket will wear out. Conversely, with frequent off-road trips, wear will affect the first (smallest) sprocket. By analogy with the second, middle sprocket, when the bike is used at medium speeds in conditions of a dirt road or bad asphalt.

On a modern mountain or road bike, the system is collapsible, so it will not be difficult to dismantle all the stars. Before work, you need to carefully prepare, namely, collect all the necessary tools:

  • connecting rod puller;
  • spanner key;
  • hexagons;
  • new detail;
  • clean cloth and grease.

Removing the system from the bike: 1. Place the frame in an upright position. If you have a stand, you should definitely use it.

Remove the right crankshaft axle fixing bolt with a hexagon.

remove, gears, bike

Unscrew the pedal from the right crank arm. A standard open-end wrench is suitable for this.

Insert the puller into the connecting rod to remove it from the carriage. To begin with, we screw the tool all the way into the thread. It is important that it sits flat on the shaft, otherwise the axle can be damaged when unscrewing the connecting rod. Place the spanner wrench on the puller and screw it in until it stops until the connecting rod is pushed out of the carriage shaft.

The two stars are usually attached to each other on a so-called spider. The big one remains on the connecting rod itself. Unscrew them with the hex bolts.

This is how the system understands. Replacing and installing looks like the reverse process:

  • Place the desired sprocket on the spider and tighten the fasteners. Change the large part together with the right connecting rod and screw the medium and small sprockets onto it.
  • Next is the installation of the connecting rod on the carriage. Before this, it is advisable to clean and lubricate the carriage shaft.
  • Carefully place the chain on the system and screw in the connecting rod by rotating the puller in the opposite direction.
  • Tighten the fixing nuts and fit the plugs.
  • Screw the pedal onto the connecting rod.

When replacing one star, it is advisable to clean the old ones. Lightly grease the system components before installing on the carriage.

So just replace the chainring. All of the listed tools are required. The connecting rod is a delicate thing, and a hammer and chisel is not the best option for removing it. The same goes for keys. It is difficult to replace them with pliers, besides, it can easily eat nuts. Well, without hexagons, it is impossible to disassemble the system into parts.

At the end, check the operation of the transmission. whether everything is in order and whether it is necessary to adjust the speed switch.

Change the sprocket on the rear cassette

The set of transmission stars of the rear wheel is several times larger than the front one. The standard kit includes eight components, and in high-speed models (or on a sports bike) there are 9 or 11.

It is worth mentioning right away that a cassette or ratchet can be placed behind. The cassette is a modern version with an internal splined mounting on the hub axle. Ratchets, as an outdated option, can only be found on a budget high-speed bike. The set usually includes 5-7 gears. External mount, threaded, removable tool differs from cassette.

The fundamental difference from the cassette is its integrity. it is impossible to change the star separately on the ratchet. Here, either all at once, or nothing at all. Therefore, we will consider how to install a new sprocket on the cassette.

As with replacing the leading stars, special tools are required here:

  • cassette remover;
  • chain whip-retainer;
  • adjustable wrench or head;
  • optional: wrenches, chain release.

When removing the cassette, you will need to first remove the rear wheel from the bike and then the axle nuts. At the same time, when replacing the sprockets, you can also clean the chain. to remove it, you need a squeeze.

Sequence of work: 1. Remove the rear wheel with a 15 wrench, with eccentric fastening everything is simple. unclench the lever and loosen the fixing nut.

The next step is to unscrew the axle nuts. You will need a 17 key for it. To roll the mount off the rotating axle, we put on an additional nut to fix the axle.

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Unscrew the bearing cone and pull out the bearing from the opposite side.

Remove axle with taper and bearing. About the bushing components: if necessary, you can immediately replace them with new ones.

Place the whip on the largest (lowest) star. We will rotate it clockwise.

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Use an adjustable wrench or a head to turn the puller counterclockwise.

It is so easy to shoot a cassette at home. Most modern star sets are collapsible, you can install one or two new stars. However, in case of severe wear, when half of the cassette is worn off, it makes no sense to change them separately. Difficulties can also arise if the largest sprocket has been erased, on which all the others are usually attached.

Is it possible to dismantle a cassette without a puller and a whip? In principle, this can be done with a slotted tube and a spanner. The whip can be made by yourself by welding a piece of an old chain to the metal handle of the knife.

When replacing individual stars, especially the middle ones, we disassemble the cassette carefully so as not to lose all the spacer and fixing washers. Everything is easier with a cassette on a spider. it does not need to be disassembled, the star is removed separately from its mount.

Rear transmission assembly:

  • Put and fix a new star, assemble a cassette.
  • Using a puller, install the drum on the spline mount of the sleeve. Before tightening, the drum must be leveled so that the connection does not wear off under load. The whip is not needed here. just rotate the puller clockwise with effort.
  • Assemble the bushing: insert the axle from the side of the cassette, then the bearing and the cone on the left side, fix the axle with nuts.
  • Put on the chain and put on the rear wheel.

Check transmission operation and adjust rear derailleur. Timely replacement of sprockets will save you from unpleasant surprises on trips and will, in general, increase the resource of the bicycle transmission.

Types of bike transmissions

The gear range setting is highly dependent on the driving style. Let’s consider the most typical cases

How to remove a sprocket from a single speed bike (singlespeed)

To remove the transmission sprocket on a single speed bike, simply open the circlip. Many singlespeed fans argue that the native retaining ring is worthless and sometimes breaks, even if the question is not about replacing the star. In any situation, if the stopper is out of order, you need to replace it. Otherwise, backlash is inevitable. The chain will simply dangle in different directions.

If the sprockets are defective, the bike will not ride. Timely replacement of transmission parts is important for all models of bikes: from the simplest hard workers to the most sophisticated high-speed highways and mountain bikes.

How to remove a sprocket from a bicycle wheel with your own hands

The bike drivetrain needs constant maintenance. The chain and sprockets on the wheel are most susceptible to wear. The single-speed bike is not insured against such breakdowns. The only difference from multi-speed models is that the chain and stars are designed for a longer service life. Let’s consider how to remove a sprocket from a wheel for subsequent replacement.

First, why is it necessary and can you do without it? No you can not. A partially worn drivetrain will impair the performance of the entire bike. Therefore, the star must be replaced in the event of a breakdown. This is especially true for asterisks, which are used especially often. Naturally, before doing repairs, the worn part must first be removed.

Cross-country drivetrain

This driving style involves driving long enough distances, and the condition of the road, to put it mildly, is different. The number of front sprockets is 2-3. The number of reverse gears ranges from 8 to 9. This allows you to maintain strength when overcoming hills and carry out a quick descent.

Mountain Bike Drivetrain (All Mountain)

The All Mountain drivetrain features a single chainring sprocket, combined with an 11 chainring at the rear. This makes the bike easy to operate, fast and functional at the same time.

It is possible to determine the optimal settings by trial and error, taking into account your own riding style, the size of the bike’s wheels and a number of other factors.

Bicycle sprocket options

Cassettes are consumable items and must be replaced periodically. On average, from 5 to 15 thousand km of driving.

Bicycle sprocket care

The rubbing mechanisms of the bicycle must be periodically lubricated and cleaned of dirt. This extends the transmission life and makes driving safer. After several trips on bad roads, forests or, moreover, off-road, the bike is literally overgrown with mud. If the frame and wheels can be washed clean, then the contamination of the bike mechanism is simply not visible. Therefore, after such trips, it is not superfluous to inspect the large and take measures to clean the parts, and, if necessary, replace the worn out components.

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You can clean the bike cassette according to this algorithm.

  • Release the rim brake. Alternatively, remove the caliper on the disc brake;
  • Remove the rear wheel;
  • Examine the cassette carefully. If it is heavily soiled, you will have to remove it from the wheel and clean it. With a little dirt, you can clean the bicycle cassette from dirt without removing it from the wheel;
  • Use special narrow brushes for cleaning, which make it possible to penetrate between the gears and clean out what should not be there. In addition, it is much more convenient than penetrating the gaps with a rag;
  • An old toothbrush is great for cleaning the teeth of the sprockets;
  • Wipe the surfaces with a cloth soaked in kerosene. Then apply lubricant to the teeth and pits;
  • It is advisable to clean the sprocket cassette and chain at the same time. This is the only way to achieve the desired result.

The system is cleaned in the same way. You don’t need to remove the bicycle wheel, but you need to work with the utmost accuracy so as not to accidentally knock off the switch setting.

Change the sprockets on the rear wheel of the bike

The drivetrain plays a very important role in the operation of the entire bike, so you must carefully monitor the wear of individual parts of it. This is especially true for the rear wheel sprockets, which fail over time. A worn out sprocket must be replaced as soon as possible, and it will not be difficult to do this.

Before starting the replacement process, get yourself the tools you need to help you. It:

  • Whip
  • Cassette remover
  • Rozhkova and adjustable wrenches

First, remove the rear wheel from the bike. This is very easy to do. Unscrew the nut with a wrench and release the chain. Owners of mountain models just need to press on the special mount and the wheel will be dismantled. Next, we install a removable device on the slotted nut of the cassette. Here we need a whip to prevent the cassette from turning. While we rotate the puller with an adjustable wrench, hold the largest star with a whip.

Using a nut, unscrew the cassette and remove it from the wheel. We carefully examine the stars and determine which one has become unusable. Start with the smallest and end with the largest. The bike drivetrain is designed in such a way that you can only replace the worn out sprockets and not the entire cassette. Therefore, having inspected the cassette, you remove the used parts from it and replace them with new ones. It is very easy to pull the star out of the cassette, this is facilitated by special rivets. The main thing is to carefully remember the order of the stars, so as not to get confused with their installation back. In the configuration of some bikes, you may find so-called spiders. It is a group of several stars that are inextricably linked. In this case, you will have to replace the entire spider. Many cyclists are faced with the following problem. After replacing several stars, there is great discomfort in the operation of the chain. This is due to the fact that the chain has already passed a certain mileage, has worn out and now it is difficult for it to interact with new parts. Therefore, experts recommend the simultaneous replacement of the chain and worn sprockets. This greatly minimizes the complexity of your bike’s drivetrain.

If you own a single speed bike, the process of replacing the chainring will be simplified to a minimum. You just need to open the retaining ring. If your own ring has become unusable, it must be replaced immediately, even if you are not going to replace the stars in the near future. Otherwise, the chain will lose its fixation, and this threatens with backlash. The process of replacing the ring is very simple, you do not need to perform the slightest forceful manipulations. Therefore, if you are talking about a single-speed bike, everything is very easy and understandable here. However, the owners of such models should carry out the process of dismantling the cassette only if one or more of the largest stars have worn out. If a small asterisk starts to fail, this is not a cause for concern. Whatever you ride, remember that both the simplest road bike and the super-fast bike need a proper transmission. A badly worn chain and stars will not allow you to drive even a couple of meters. Pay close attention to the mechanics and replace worn-out parts in a timely manner. A working bike is the main guarantee of your safety and a cool, trouble-free ride!