How to Adjust the Speed ​​of a Speed ​​Bike

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How to adjust speeds on a stealth bike. How to properly adjust the rear and front derailleurs on a bicycle: photo and description of the process

Despite the fact that the bicycle was invented a long time ago and, it would seem, should have been out of date for a long time, but this two-wheeled vehicle is gaining more and more popularity every year. Cycling enthusiasts prefer this type of transport due to its convenience, ease of operation, environmental safety and practicality. Not only ordinary bicycles are very popular, but also mountain, track bikes, which use modern innovative technologies. In order for the owners to enjoy cycling, they need to take care of it and monitor the condition of all parts and assemblies. If, in the process of cycling, you hear extraneous sounds, creaking, knocking and twitching during gear changes, it’s time to pay attention to such a detail as the gear selector.

Rear derailleur

The gear shifter is an important part of a multi-speed bike. Thanks to this component, it becomes possible to move in extreme conditions, which include upwind movement, ascents, poor road quality. The transmission unit must deal with all these problems. The quality of the ride and the safety of the cyclist depend on the smooth operation of the speed switch. This skill is very useful, and every bike owner should learn how to independently adjust the gear shifter. Every cyclist can make adjustments to bicycle shifters. You need to study the theory in detail by reading the instructions, or using the advice of experienced bike owners.

Before setting the derailleur, the rear derailleur must be adjusted. Placing the bike in the correct position (wheels up) will greatly facilitate the entire adjustment process. So, all the necessary details will be in sight, and it will be much easier to get to them.

adjust, speed, bike

Reasons for poor gear shifting:

  • physical defects of the switch parts;
  • contamination of parts. To prevent this from happening, the components of the transmission unit must be periodically cleaned of dirt, dust and old grease;
  • worn out cable with elements of damage. Such a part requires replacement;
  • damage to the cock.

If you observe damage, deformation and wear of the constituent parts, they must be replaced as they are practically irreparable.

If all parts are OK, adjust the switch. What does the speed switch consist of? The components of the speed switch are as follows:

  • Handle for gear shifting located on the steering wheel;
  • A shifter that attaches to the handlebars near the handles. Handles and a cable are attached to the shifter. It is with the participation of the cable that the impulse is transmitted from the shifter to the stars;
  • Cassette, which includes stars of different sizes;
  • front fixing mount;
  • rear derailleur, whose main function is to switch the chain to the required sprockets.

How the switches work

Using the handle and shifter, the cyclist activates the required speed. In a certain position of the handle, the cable is pulled. As a result of this tension, the frame is thrown onto larger sprockets; when the cable is loosened, it is not thrown onto small sprockets. As mentioned above, bike setup can be started from the rear derailleur. Procedure for adjusting the rear derailleur:

  • select the second star in the front block, and the smallest in the rear one and set the switch chain on them;
  • The bike’s rear derailleur system has two bolts that act as stops. One is abbreviated as H, and on the other. L. These two bolts are used to adjust the high and low gears on the stars. If during the adjustment process any extraneous sounds occur, you can get rid of them using the latch;
  • check the tension of the cable and, if the tension is not correct, use the regulator located on the shifter;
  • Test the switching quality. If the switching occurs smoothly, no extraneous sounds are heard, then you did everything right.

What to do if you can’t adjust the bike’s rear derailleur

There are several methods for solving this issue. But if the standard tuning instruction did not work, to tune the rear derailleur you need to:

  • dismantle the chain, remove the cable;
  • move the switch to the chain position to the smallest star;
  • use adjusting bolts (this way you can tighten the cable);
  • set the adjusting bolt H to the extreme position;
  • move the part called the parallelogram to the big star and adjust the position of the bolt L.

The regulator is fixed with screws. It must be set to the extreme position. After that, the chain must be displaced in this order: the front cassette is the largest star in diameter, the rear, on the contrary, is the smallest.

Bicycle front derailleur

The transition to setting this mechanism is possible only when the rear derailleur is set. This feature is important to take into account before starting work. The figure shows the switch (round, black).

Leave the chain on the middle sprocket of the front block and place it on the large sprocket in the rear block. If chain friction is observed, re-engage adjuster L. To adjust stop H, the chain moves to the largest sprocket at the front and smallest at the back. The adjuster will help you position the chain in the optimal position without friction and excessive chain tension. At the end of the work, be sure to check the quality of its implementation.

Correct installation of the front derailleur

You can start the front derailleur setting only after adjusting the rear derailleur. Installation is the initial step in adjusting the speed switch. It’s very important to do it right.

  • before installing the switch, it is necessary to inspect the condition of the constituent parts and, if necessary, clean them of dirt and lubricate.
  • Next, adjust the location of the front derailleur. On the frame, it should be located along the pipe under the saddle.
  • Set the steering angle parallel to the drive sprocket on the front cassette of the transmission unit.
  • Next, you need to adjust the gap between the underside of the derailleur frame and the top line of the teeth of the large gear. The gap should be minimal.
  • Adjust the degree of cable tension.
  • Place the chain close to the inside of the frame.

It is also worth paying attention to setting up the chain. The bicycle chain is a very important element, with the help of which the impulse is transmitted from one chainring to another and the adjustment process takes place. The technical condition of the circuit is of great importance for the operation of the entire system. If, for some reason, the bicycle chain is stretched or deformed, this cannot but adversely affect the operation of the entire transmission unit. To prevent this from happening, the chain must be periodically removed and cleaned, and then set the correct position. There are lock and lockless models of bicycle chains. They differ in the way they are connected. To remove the locking chain, it is enough to find the link with the lock and disconnect it with a screwdriver. The lockless bicycle chain is disconnected using a squeeze. This tool helps to push the link axle out and make the connector. If it skews for some reason, this can adversely affect the gearshift process.

One of the best manufacturers of bicycle parts, including derailleurs, is the Japanese company Shimano, which has a proven track record of producing products in which Japanese quality is combined with budget and price. Shimano derailleurs (fig. 3) are suitable for all types of bicycles. Shimano derailleurs are installed on both regular touring bicycles and mountain and track bikes with gearboxes up to 33 speeds.

Another recognized market leader is Sram. The products of this company are used on bicycles of the city bike category, as well as on sports bicycles. Sram products are of good quality and affordable price for cycling enthusiasts.

Every bicycle owner who prefers this type of transport to others is obliged to understand how to switch its speeds. It is believed that the more speeds a bike has, the better it is. But in fact, speed only allows you to improve the quality of maneuvering and squeeze the maximum out of the bike’s capabilities, so then everything depends on the dynamic efforts of the person riding the bike. Conventional bicycles have a simpler design compared to high-speed ones. There is less hassle with such a bike, but it also has fewer possibilities. In the transmission unit of such bicycles there are only two stars: one large and one small. Multi-speed bicycles, which have gained popularity in recent years, have two sets of sprockets in their transmission units: front and rear. Each cassette contains stars of different sizes. To switch gears correctly, you need to remember a few basic rules:

  • If your bike is not equipped with a planetary hub, you only need to switch gears on it while driving, otherwise there is a danger of damage to the bike.
  • During gear shifting, it is not necessary to apply significant dynamic forces, in order to eliminate the danger of a burst of flowers, it is advisable to change gears sequentially, without making sudden jerks.

How to adjust the speed switch on a bike

It often happens that either the speeds on the bike are not switched clearly, or some new transmission elements have been installed. In this case, you will need to adjust the speed switch and it is quite possible to do this work on your own, without contacting specialized workshops.

Necessary terminology

To understand the process of self-adjusting the speed switch, you need to know the definition of some specific terms, otherwise it will be difficult to understand the instructions.

Things to remember:

  • Speed ​​switch (override). This is a transmission element that is specifically responsible for gear shifting. If there is a rear overhang, then it also acts as a support for the tension of the bicycle chain. The crossover (back and front) can be described as follows: it is a parallelogram mechanism equipped with a powerful return spring, on which the frame is fixed. The rear derailleur has two rollers inside the frame. if the level of cable tension rises, the frame shifts the chain to large stars, and if this cable tension decreases, then the chain is shifted towards small stars with the help of the frame. The mechanism of the front derailleur works in the same way.
  • Shifter. It is designed to switch speeds by changing the tension level of the cable. Most often, the shifter is located on the handlebars, but in some bicycle models it can also be located on the lower tube of the frame triangle. Note:shifters and speed switches have a common connection on the steering wheel (this is provided by a cable) and are covered with a jacket.
  • Cassette. This is the name of the rear transmission unit, which consists of stars of different sizes (of different diameters and with a different number of teeth) and is installed on the rear hub drum. If the bike model is old, then a ratchet is used instead of a drum in the rear hub.
  • Cock. This is a metal part that helps to maintain the integrity of the frame and rear derailleur in the event that the vehicle has been hit. The rooster is always attached to the frame, and a cross-over is already attached to this metal part. When a blow occurs, it is this very cock that breaks down, and the frame and the speed switch (crossover) remain intact.
  • System. This is the name of the front transmission unit, which consists of stars of different diameters and with a different number of teeth. These stars are fastened to each other and the connecting rods with special hollow bolts on the connecting rods, but you need to know that there are no hollow bolts in cheap bicycles. the stars and connecting rods are riveted together.

Why is there a violation of gear shifting

To understand what action should be taken to adjust gear shifting, you need to understand what causes may lead to the problem under consideration. Experts identify several such predisposing factors:

  • deformation of the rooster;
  • stretching the cable;
  • deformation of the speed switch;
  • malfunctioning return spring.

How to fix defects

The speed switch will work perfectly and the bike itself will be with a new (or not very old) cable, with absolutely intact shirts (and not dry!) ​​And not deformed (or in a small volume) stars and chain.

If the cable is just stretched, then you just need to pull it up. But if the cable breaks, then you cannot do without replacing this element. The process of replacing the cable is not difficult, the main thing is to strictly adhere to the recommendations of specialists:

  • unscrew the cable fixing screw, which is located on the cross-over;
  • pull the cable out of the shirts;
  • if necessary, disassemble the shifter and pull the cable out of it;
  • a new cable must be inserted into a special groove in the shifter, and it is the metal tip of the cable that must enter into the groove;
  • lubricate the entire cable with a special grease, you do not need to spare the consumable;
  • pass the cable through the shirts;
  • there are special grooves on the frame, into which shirts are tucked;
  • fasten the cable with a screw on the front.

In case of poor gear shifting, pay attention to the return spring. it must be clean and lubricated. To achieve this, you just need to rinse the spring under running water, dry it completely and lubricate it thoroughly.

If the frame of the rear derailleur is crooked, then this can only mean one thing. the cock is bent. If this is not critical, then you can correct the cock with your hands. you need to take the rear switch in your hand, which is fixed on the cock, and with the other hand hold the frame. Slowly pull out the problematic transmission element (rooster) until relatively level.

Note: this “repair” of the cock is a temporary solution to the problem of shifting gears. The fact is that the rooster is a consumable that needs to be changed in time, and not constantly repaired / pulled.

In some cases, the bike owner pays attention to a deformed rear derailleur (the front derailleur rarely suffers on impact). it can also be returned to its original position using the hands. But if the rear derailleur is deformed too much, then it is advisable to replace it.

Note: After performing specific manipulations to repair bent / deformed parts, you should not use the bike for too long. this may end in a fall, another breakdown at the most inopportune moments. And in some cases, such carelessness can lead to a road accident.!

How to properly adjust the rear derailleur

To independently adjust the rear derailleur on a bicycle, you just need to strictly follow the step-by-step instructions from experts in this process. So, follow all the steps:

  • Move the chain to the small sprocket with the right shifter.
  • Unscrew the fixing screw and release the cable.
  • Find the screw with the “H” mark. Use a screwdriver to adjust this screw so that the smallest star lies in the same plane with the rollers, which are located in the foot (frame).
  • Pull the cable by hand and fix it with the screw.
  • Check the operation of the switch, and if it does not work correctly, the chain does not switch well to large stars, then you need to tighten the cable harder (either with the help of a drum or with a switch).
  • Move the chain to the largest sprocket available in the cassette.
  • Find the screw marked “L” and adjust it so that the tab (frame) and the sprocket are in the same plane. in this case, the crossover will not be able to get into the spokes of the front wheel.

How to adjust the front derailleur

There are also clear and simple step-by-step instructions for adjusting the front derailleur:

  • Move the chain to a smaller star.
  • Unscrew the fixing screw and release the cable.
  • We find a screw marked “L”, with its help we adjust the position of the frame so that the chain is between the plates of the frame, but at the same time does not touch them.
  • We stretch the cable, fix it with a screw.
  • Now we move the chain in the cassette to a smaller sprocket. it is convenient to do this using the rear derailleur.
  • With the front derailleur, move the chain to the middle sprocket and look. if the chain on the second one touches the outer side of the frame everywhere, then you need to increase the tension of the cable using the drum located on the left shifter.
  • We switch the gear to the largest sprocket in the cassette and check. if the chain touches the walls of the frame, you need to move the last element so that the chain is in the middle. This manipulation can be done using the screw marked “H”.
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How to adjust the rear derailleur on a bike

Setting up the speed switch is not a tricky business, and anyone who knows at least a little about the mechanisms can do it.

To independently configure all the mechanisms and put them into action, you need to do the following:

  • you need to check if the switch itself is bent. This can be determined by looking at the tensioner. it should be parallel to the stars on the rear wheel. If it’s all about him, then you need to try to straighten it with pliers or other tools.
  • if everything is fine with the switch, then most likely the rooster is to blame (this is the mount on which the switch is placed). Most often, it also bends, and it has to be straightened periodically, so that at the first breakdown it must be replaced.

If all of the above is done or in order, then you can proceed directly to setting the switch itself.

This should be done as follows:

  • put the switch on the highest speed (that is, on the smallest star)
  • we find two screws. H and L. Turn the screw H so that the roller on the switch moves one mark with a smaller star
  • put on the lowest speed (large sprocket), and rotate the screw L until the roller is aligned with the large sprocket
  • again set it to the highest speed, and pull the cable. In this case, you need to make sure that he got into the special prem. It should be pulled tighter!
  • check switching! If it switches very tightly, or does not switch at all, then you need to slightly loosen the cable, or vice versa, pull it.
  • if everything works well, then we can assume that the job is done.

Reasons for the malfunction of the rear spreader

The reasons can be varied. this is a bent cock or a derailleur, poor cable tension, corrosion on parts, etc. Usually, such problems occur if the derailleur is incorrectly set or no one has used a bicycle for a long time, which caused corrosion on the parts of the diverter. and its movement is difficult.

Adjusting screws on the switch

The adjusting screws are the same H and L screws used to adjust the rear derailleur. Their action is based on fixing the speed switch, which allows it not to wobble. Usually they are accessed only once, at the first setup, and they are not touched again. But in the event of a cock or a switch breakdown, you simply cannot do without them. They are not too sensitive, so they can be safely twisted and adjusted as needed.

Cables and shirts

Special attention should also be paid to cables with shirts. The shirt is a cable sheath. And special attention should be paid to them for the simple reason that if the cable or shirt is damaged, then at the most crucial moment it may break, and subsequently switching speeds will be impossible.

Rear derailleur cock

The rooster (or cockerel) is the part with which the switch is attached to the frame. In addition, it provides more reliable protection of the frame from all-round impacts, such as a fall from a great height or a large overload of the bicycle. First of all, the rooster fails, and this saves the frame itself. After all, the rooster can always be changed, but the frame, if damaged, may not be repairable.

Therefore, this part is also very necessary, and if there is a need to purchase it, then choosing it, you should pay attention to the following characteristics: its alloy composition (what metals are used in the manufacture), quality (no chips and cracks) and of course the price.

It should not cost more than 500-600 rubles, of course it all depends on the wishes of the buyer. You can buy those that are much more expensive, but this is unnecessary.

Chains and sprockets

These two parts are the main parts of the bicycle, since they directly move with the help of them. Most often, the asterisks are cassettes. which consists of 6-7 stars. It all depends on the number of speeds on the bike.

And the chains vary in pitch and length. The chain pitch is the size of one link on the sprocket or chain, and in accordance with the pitch on the sprocket, you need to select the chain with the desired pitch. The length is basically the same everywhere, but it can also be of an individual size. Then you will have to look for it for a very long time, or rivet it yourself.

Chain tensioner rollers

The tensioner rollers are part of a mechanism that provides high-quality chain tension during gear changes or while the bike is moving. Without it, the chain will not keep at the same level, which will not allow you to pedal or switch gears.

Steering wheel switches

There are two types of steering wheel switches. lever and cylindrical. Lever are a small lever located on the left or right on the steering wheel, with which the cable is pulled.

Cylindrical switches are switches that mount with a rubber or plastic handle to the edge of the handlebars. Shifting here occurs by turning the handle down or up, then pulling the cable and moving the chain to the desired sprocket located at the back. They guarantee high-quality and fast shifting without getting off the bike and while driving.

How to fine-tune the rear derailleur

The most important factor when adjusting a switch is accuracy. You can fine-tune it as described at the beginning of the article, but during implementation you need to pay special attention not only to the adjusting screws, but also to the entire mechanism as a whole.

How to adjust the front derailleur on a bike

Adjusting the front derailleur is a little easier than the rear derailleur. An important factor here is its correct and reliable installation on the frame, and everything else is done within 15 minutes.

The correct front derailleur position is when the chain is on the largest sprocket and a distance of 1-3mm is maintained from sprocket to frame. Then we can assume that the switch is installed correctly.

Tips for fine tuning

  • you need to set the minimum speed, that is, behind the chain stands on the largest star, and in front on the smallest.
  • slightly loosen the cable tension and turn the screw L until there is a 1mm gap between the chain and the frame
  • firmly fix the cable by inserting it into a special groove.
  • we set the highest speed
  • adjustable with screw H the gap between the chain and the inner side of the frame
  • we check the performance
  • if the switching is tight, then we adjust with screws to the desired state
  • After all the manipulations, the bike should be washed and all parts (chain, sprockets, etc.)

Steering wheel switches

The switches here are exactly the same as on the rear wheel. They are absolutely no different, and even located exactly the same.

Cables and shirts

The cables for the front derailleur differ from the derailleur on the rear in that they can be slightly shorter, or even slightly thinner. And shirts are also divided into three types, and each shirt has its own cable.

Useful Tips for Using Derailleurs on Your Bicycle

Of course, breakdowns and adjustments can be avoided if all the rules are carefully followed.

Namely:

  • wash the bike and its parts as often as possible, and then dry it thoroughly, since dirt and corrosion are the main enemies of metal products
  • lubricate all parts with machine oil or grease (imported products do not cope very well, and often do harm)
  • climb on your own to repair mechanisms only in extreme cases, since inexperience can only aggravate the situation, so it is better to ask professionals or friends for help.

In conclusion, I would like to say that you can fix any thing yourself if you do everything correctly, following all the tips listed above. Or even start monitoring its condition from the very moment of purchase. And then you don’t have to fork out for new parts, which, moreover, cost 2 times more than the bike itself.

How to set up gear shifting on a mountain or city bike

Speed ​​switches are actively used when riding both mountain and city bikes. Much depends on their quality work: the pleasure of cycling, the quality of the ride and even your safety. Before each cycling season, this mechanism should be checked and, if necessary, correctly adjusted.

What parts help to adjust the speed switches

The multi-speed mountain bike or city bike is equipped with several gears and offers new possibilities. It is much easier to conquer peaks, ride on irregularities, even perform various tricks on it. To enjoy cycling, you need to set the speed switch correctly.

Those who first decided to understand the switch mechanism on their own should first familiarize themselves with the details of the transmission and their functions.

A drivetrain is a collection of bicycle parts that can take on some of the cyclist’s load. It also helps you to ride on difficult terrain such as mountains.

Knowledge of the structure of modern bicycles helps to properly set up gear shifting

We will not dwell on each part of the bike in detail. Let’s consider just some of the elements that make up the transmission.

  • the front derailleur assists the chain in guiding the chainring. Attaches to the frame near the pedals;
  • the system is part of the front derailleur. It also consists of stars, different in diameter and number of teeth, which are attached to the connecting rods with special bolts;

The front derailleur is in the pedal area

Rear derailleur located on the rear wheel

The most reliable chains are matte gray. If the chain has a yellowish tint, this indicates its low quality. Nickel plated chains are considered to be of average quality.

The bike chain is an important part of the drivetrain

Shifters are mounted on the handlebars and are responsible for gear shifting

The transmission cable connects the shifter to the derailleur

Speed ​​change mechanism

The work of the rear and front derailleur is as follows: if the cable is pulled, the derailleur frame moves the chain to higher sprockets. If, on the contrary, weaken the cable, then the frame will throw the chain onto smaller stars.

The speeds are switched with the help of shifters (coins) located on the steering wheel. The rear derailleur is adjustable with the right shifter. Thus, the chain jumps between the rear sprockets. And the front derailleur is adjustable with a shifter on the left side. So the chain jumps among the chainrings.

Gear shift types

Before making any adjustments, determine what kind of gear shift your bike has. There are 3 main types of switches.

  • External switching mechanism.
  • Internal switching mechanism.
  • Combined type.

The internal gearshift mechanism appeared earlier than the external one. The progenitor of multi-speed bushings is the English company Sturmey-Archer. It was they who created the first two and three speed hubs, which were released in 1902.

Internal gear shifting for mountain bike

The basis of this design is planetary bushings. This mechanism does not use cassettes. The transmission includes only 2 stars: front and rear. The whole mechanism is hidden inside. There is usually no front derailleur either.

All elements of the speed switch are hidden in the body

This mechanism is often found on road bikes, pleasure bikes, folding bicycles and city bikes. The system itself is located inside the rear planetary hub. This type of shifter can be seen, for example, on the Forward Surf city bike (3 gears).

This mechanism is difficult for a layman to adjust. Better contact a bike workshop if necessary.

External shifting on a speed bike

The outer type belongs to most multi-speed bicycles. It is used on both mountain and city walking models. The mechanism is made up of gear shifters and stars that form a cassette or system. Variable speed with rear and front derailleurs.

External gear shift elements. derailleur and cassette

This type of gear shifting can be seen on both the Forward Dortmund city bike (7 speeds) and the Forward Agris mountain bike (24 speeds). You can customize this switch yourself by examining the mechanism.

Bicycle chassis design, principles of operation. video. Combined mechanism

The combined type is a combination of external and internal mechanisms. It attaches to the bike’s rear wheel hub.

The combo derailleur is a hybrid of the external and internal types of bike shifting.

This mechanism is extremely rare, since it has collected all the negative aspects of both external and internal gearshift systems. It is configured only by a professional.

Switch classification

In the modern world, there are many companies that create equipment for bicycles. The best quality models are made by corporations such as Shimano (Japan) and Sram (America), producing entire lines of derailleurs.

Devices for professionals:

  • Shimano XTR, Sram ESP 9.0 and Sram ESP X.0 are leading the way in price and quality. They are mainly used in competition bicycles. They are characterized by low construction weight.
  • Shimano deore xt, Shimano Saint, Shimano slx finished second in the same category. Used in bicycles with 27 gears.
  • Shimano Deore LX, Shimano Dura-Ace, Shimano Hone. 3rd place. They are designed for devices with the maximum number of speeds.

Sports bike lines:

  • Sram ESP 7.0 and Shimano Deore are similar designs. Made from highly durable components and designed for 24 gears.
  • Sram ESP 4.0, Sram ESP 5.0, Shimano Nexave and Shimano alivio are cheaper than the professional line. They can handle up to 24 speeds and are designed for touring bike models.

Sram ESP 7.0 derailleur specially designed for sports bikes

Hobbyist Switch Line:

  • The Sram ESP 4.0, Shimano C201 and Shimano acera are bundled with cheaper entry-level hybrids and mountain bikes. Withstand up to 24 gears.
  • Sram ESP 3.0, Shimano Nexus and Shimano altus are designed for touring, city bikes.
  • The Shimano tourney is built for a calm, smooth ride. Shifts 21 gears.

There is no fundamental difference in the adjustment and operation of different switch lines from the same company. For example, different Shimano derailleur groups work the same and are interchangeable. Let’s say that the drive of eight-speed Alivio, Altus, Acera switches can be equipped with nine-speed Deore, Deore XT, Deore LX, XTR systems and vice versa.

What can affect the quality of the switches

It is important to find out what caused the problem.

Stretched rope

This defect is regulated by a drum on a shifter.

  • When the chain moves silently and bounces on large stars with difficulty, then the cable is stretched. Turn the drum clockwise until the part is tensioned to the desired position.
  • In the case when the chain does not want to go down to small stars, relax the cable by turning the drum counterclockwise.
  • Check the operation of the speed switch. Twist the drum if necessary. Adjust until the chain bounces smoothly.

Broken cable

If the part is damaged, it must be replaced.

  • Unscrew the fixing screw on the lintel.
  • Disassemble the shifter to remove the cable.
  • Insert a new one, treat with special grease.
  • Run it through the shirts and put them back in place.
  • Secure the new cable to the derailleur.

Changing the cable on the bike. video. Parallelogram spring problems

For better operation of the return spring, you need to wash it. Then lubricate after cleaning.

Rooster bent or broke

If the foot of the rear derailleur is oblique, then the mount is bent. You can fix this defect yourself.

  • Hold the foot with one hand and grasp the switch with the other.
  • Carefully, without sudden movements, level the position of the cock until the rear frame is level.

The rooster should be replaced with a new one as soon as possible. Even if you align it, such a detail will not last long.

Deformation of the switch

A common cause of such a breakdown is a blow from a bicycle. Usually the rear derailleur suffers, the front derailleur is very difficult to bend. After a breakdown, it is worth checking which parts are broken.

  • If this is a frame. align or change the part.
  • If the screw that adjusts the chain tension or the eyelet that secures this screw breaks, then it is better to replace the parts. Otherwise, the speeds will switch very badly.

How to adjust the rear derailleur

The rear derailleur is a machine that transfers the chain from one sprocket of the rear wheel to another. Today, the vast majority of high-speed bicycles are equipped with such a switch.

Most high-speed bikes are equipped with a rear derailleur

The rear derailleur consists of the following elements.

  • Switch frame. The number of bike speeds depends on its length.
  • Two rollers that guide the chain: guide and tensioner roller.
  • The mechanism itself (parallelogram).
  • Fixing bolt.
  • Low gear stop. screw marked L.
  • Top gear stop. screw marked H.
  • Cable guide groove.
  • Tensioner adjusting screw.

Setting the rear derailleur is needed if the mechanism is out of order, the chain jumps over the necessary stars, the speed does not switch, a grinding or loud sounds are heard. You can configure the mechanism and debug its work yourself. You will need a Phillips screwdriver and a hex wrench

First, make sure the derailleur is vertical and parallel to the bike. If everything is in order, you can proceed to the setup. For convenience, turn the bike upside down, placing it on the saddle and handlebar, this will give access to the switch itself and the adjustment screws.

    First, lower the chain to the smallest sprocket. Do this with the shifter on the right handlebar of the bike, it is she who is responsible for the rear derailleur.

How to properly adjust bike speeds video

Despite the fact that the bicycle was invented a long time ago and, it would seem, should have been out of date for a long time, but this two-wheeled vehicle is gaining more and more popularity every year. Cycling enthusiasts prefer this type of transport due to its convenience, ease of operation, environmental safety and practicality. Not only ordinary bicycles are very popular, but also mountain, track bikes, which use modern innovative technologies. In order for the owners to enjoy cycling, they need to take care of it and monitor the condition of all parts and assemblies. If, in the process of cycling, you hear extraneous sounds, creaking, knocking and twitching during gear changes, it’s time to pay attention to such a detail as the gear selector.

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Rear derailleur

The gear shifter is an important part of a multi-speed bike. Thanks to this component, it becomes possible to move in extreme conditions, which include upwind movement, ascents, poor road quality. The transmission unit must deal with all these problems. The quality of the ride and the safety of the cyclist depend on the smooth operation of the speed switch. This skill is very useful, and every bike owner should learn how to independently adjust the gear shifter. Every cyclist can make adjustments to bicycle shifters. You need to study the theory in detail by reading the instructions, or using the advice of experienced bike owners.

Before setting the derailleur, the rear derailleur must be adjusted. Placing the bike in the correct position (wheels up) will greatly facilitate the entire adjustment process. So, all the necessary details will be in sight, and it will be much easier to get to them.

Reasons for poor gear shifting:

  • physical defects of the switch parts;
  • contamination of parts. To prevent this from happening, the components of the transmission unit must be periodically cleaned of dirt, dust and old grease;
  • worn out cable with elements of damage. Such a part requires replacement;
  • damage to the cock.

If you observe damage, deformation and wear of the constituent parts, they must be replaced as they are practically irreparable.

If all parts are OK, adjust the switch. What does the speed switch consist of? The components of the speed switch are as follows:

  • Handle for gear shifting located on the steering wheel;
  • A shifter that attaches to the handlebars near the handles. Handles and a cable are attached to the shifter. It is with the participation of the cable that the impulse is transmitted from the shifter to the stars;
  • Cassette, which includes stars of different sizes;
  • front fixing mount;
  • rear derailleur, whose main function is to switch the chain to the required sprockets.

How the switches work

Using the handle and shifter, the cyclist activates the required speed. In a certain position of the handle, the cable is pulled. As a result of this tension, the frame is thrown onto larger sprockets; when the cable is loosened, it is not thrown onto small sprockets. As mentioned above, bike setup can be started from the rear derailleur. Procedure for adjusting the rear derailleur:

  • select the second star in the front block, and the smallest in the rear one and set the switch chain on them;
  • The bike’s rear derailleur system has two bolts that act as stops. One is abbreviated as H, and on the other. L. These two bolts are used to adjust the high and low gears on the stars. If during the adjustment process any extraneous sounds occur, you can get rid of them using the latch;
  • check the tension of the cable and, if the tension is not correct, use the regulator located on the shifter;
  • Test the switching quality. If the switching occurs smoothly, no extraneous sounds are heard, then you did everything right.

What to do if you can’t adjust the bike’s rear derailleur

There are several methods for solving this issue. But if the standard tuning instruction did not work, to tune the rear derailleur you need to:

  • dismantle the chain, remove the cable;
  • move the switch to the chain position to the smallest star;
  • use adjusting bolts (this way you can tighten the cable);
  • set the adjusting bolt H to the extreme position;
  • move the part called the parallelogram to the big star and adjust the position of the bolt L.

The regulator is fixed with screws. It must be set to the extreme position. After that, the chain must be displaced in this order: the front cassette is the largest star in diameter, the rear, on the contrary, is the smallest.

Bicycle front derailleur

The transition to setting this mechanism is possible only when the rear derailleur is set. This feature is important to take into account before starting work. The figure shows the switch (round, black).

Leave the chain on the middle sprocket of the front block and place it on the large sprocket in the rear block. If chain friction is observed, re-engage adjuster L. To adjust stop H, the chain moves to the largest sprocket at the front and smallest at the back. The adjuster will help you position the chain in the optimal position without friction and excessive chain tension. At the end of the work, be sure to check the quality of its implementation.

Correct installation of the front derailleur

You can start the front derailleur setting only after adjusting the rear derailleur. Installation is the initial step in adjusting the speed switch. It’s very important to do it right.

  • before installing the switch, it is necessary to inspect the condition of the constituent parts and, if necessary, clean them of dirt and lubricate.
  • Next, adjust the location of the front derailleur. On the frame, it should be located along the pipe under the saddle.
  • Set the steering angle parallel to the drive sprocket on the front cassette of the transmission unit.
  • Next, you need to adjust the gap between the underside of the derailleur frame and the top line of the teeth of the large gear. The gap should be minimal.
  • Adjust the degree of cable tension.
  • Place the chain close to the inside of the frame.

It is also worth paying attention to setting up the chain. The bicycle chain is a very important element, with the help of which the impulse is transmitted from one chainring to another and the adjustment process takes place. The technical condition of the circuit is of great importance for the operation of the entire system. If, for some reason, the bicycle chain is stretched or deformed, this cannot but adversely affect the operation of the entire transmission unit. To prevent this from happening, the chain must be periodically removed and cleaned, and then set the correct position. There are lock and lockless models of bicycle chains. They differ in the way they are connected. To remove the locking chain, it is enough to find the link with the lock and disconnect it with a screwdriver. The lockless bicycle chain is disconnected using a squeeze. This tool helps to push the link axle out and make the connector. If it skews for some reason, this can adversely affect the gearshift process.

One of the best manufacturers of bicycle parts, including derailleurs, is the Japanese company Shimano, which has a proven track record of producing products in which Japanese quality is combined with budget and price. Shimano derailleurs (fig. 3) are suitable for all types of bicycles. Shimano derailleurs are installed on both regular touring bicycles and mountain and track bikes with gearboxes up to 33 speeds.

Another recognized market leader is Sram. The products of this company are used on bicycles of the city bike category, as well as on sports bicycles. Sram products are of good quality and affordable price for cycling enthusiasts.

Every bicycle owner who prefers this type of transport to others is obliged to understand how to switch its speeds. It is believed that the more speeds a bike has, the better it is. But in fact, speed only allows you to improve the quality of maneuvering and squeeze the maximum out of the bike’s capabilities, so then everything depends on the dynamic efforts of the person riding the bike. Conventional bicycles have a simpler design compared to high-speed ones. There is less hassle with such a bike, but it also has fewer possibilities. In the transmission unit of such bicycles there are only two stars: one large and one small. Multi-speed bicycles, which have gained popularity in recent years, have two sets of sprockets in their transmission units: front and rear. Each cassette contains stars of different sizes. To switch gears correctly, you need to remember a few basic rules:

  • If your bike is not equipped with a planetary hub, you only need to switch gears on it while driving, otherwise there is a danger of damage to the bike.
  • During gear shifting, it is not necessary to apply significant dynamic forces, in order to eliminate the danger of a burst of flowers, it is advisable to change gears sequentially, without making sudden jerks.

Having become the happy owner of a bike, you should be prepared for the fact that over time you will have to carry out basic maintenance of the bike yourself. Of course, if we are talking about a serious malfunction, it is best to seek help from specialists, but many manipulations can be safely performed on your own.

When should you configure? Required set of tools:

  • Screwdriver;
  • Hex key set;
  • Pliers;
  • Spare cables;

Adjusting the front derailleur

  • We put the speed switch in the following ratio: the smallest star in the front and the largest in the back;
  • Unscrew the cable;
  • Using the screw of the limiter for low gears, we adjust the position of the frame, it should be at a distance of no more than 3 millimeters from the chain;
  • Stretch the front derailleur cable slightly;
  • Switch the speed to the middle sprocket and check if the chain is touching the outer frame. If it touches, it is necessary to tighten the cable more;
  • We put the derailleur on the smallest star and check how easy it is to change gears. If the switch fails, adjust the high gear limiter screw.

Setting up the rear derailleur

  • Setting the switch to the smallest star.
  • Loosen the cable. To do this, unscrew the clamp screw located on the rear derailleur.
  • Putting the front derailleur chain on the middle sprocket.
  • We check the operation of the chain. To do this, you just need to twist the pedals. If the chain starts to fall, adjust the high gear stop screw. As a result, your rear derailleur and the smallest chainring in the front should line up.
  • Pull the cable tightly and tighten the bolt, which is responsible for fixing the tightening.
  • We begin to test the switch by clicking each speed from the lowest to the highest. If in a certain place the system fails, then adjust the tension of the cable until all speeds are easy to switch.

When adjusting the speed switch, be sure to remember that all cable manipulations must be done smoothly and very carefully. Be patient and avoid sudden movements. When loosening or tightening the bolts, do it gradually, no more than one turn at a time.

Remember that speed tuning is a very important issue that affects the overall performance of your bike. Therefore, take the drive mechanism very seriously, and once you have mastered the technique of setting speeds, carry it out systematically.!

The bike chain is one of the most important parts of your bike, so not only the overall feeling of riding, but also your safety depends on its serviceability.

The drivetrain plays a very important role in the operation of the entire bike, so you must carefully monitor the wear of its individual parts.

In order to install disc brakes on a bicycle, you can go to any bike workshop, or carry out this process yourself.

The braking system of any bike is the most important mechanical element that is responsible for your safety during the trip.

The need to remove the bike chain occurs when it needs to be replaced, cleaned or a broken link must be removed.

Speed ​​switches are actively used when riding both mountain and city bikes. Much depends on their quality work: the pleasure of cycling, the quality of the ride and even your safety. Before each cycling season, this mechanism should be checked and, if necessary, correctly adjusted.

What parts help to adjust the speed switches

The multi-speed mountain bike or city bike is equipped with several gears and offers new possibilities. It is much easier to conquer peaks, ride on irregularities, even perform various tricks on it. To enjoy cycling, you need to set the speed switch correctly.

Those who first decided to understand the switch mechanism on their own should first familiarize themselves with the details of the transmission and their functions.

Knowledge of the structure of modern bicycles helps to properly set up gear shifting

We will not dwell on each part of the bike in detail. Let’s consider just some of the elements that make up the transmission.

  • the front derailleur assists the chain in guiding the chainring. Attaches to the frame near the pedals;
  • the system is part of the front derailleur. It also consists of stars, different in diameter and number of teeth, which are attached to the connecting rods with special bolts;

The front derailleur is in the pedal area

Rear derailleur located on the rear wheel

The bike chain is an important part of the drivetrain

Shifters are mounted on the handlebars and are responsible for gear shifting

The transmission cable connects the shifter to the derailleur

Speed ​​change mechanism

The work of the rear and front derailleur is as follows: if the cable is pulled, the derailleur frame moves the chain to higher sprockets. If, on the contrary, weaken the cable, then the frame will throw the chain onto smaller stars.

The speeds are switched with the help of shifters (coins) located on the steering wheel. The rear derailleur is adjustable with the right shifter. Thus, the chain jumps between the rear sprockets. And the front derailleur is adjustable with a shifter on the left side. So the chain jumps among the chainrings.

Gear shift types

Before making any adjustments, determine what kind of gear shift your bike has. There are 3 main types of switches.

  • External switching mechanism.
  • Internal switching mechanism.
  • Combined type.

Internal gear shifting for mountain bike

The basis of this design is planetary bushings. This mechanism does not use cassettes. The transmission includes only 2 stars: front and rear. The whole mechanism is hidden inside. There is usually no front derailleur either.

All elements of the speed switch are hidden in the body

This mechanism is often found on road bikes, pleasure bikes, folding bicycles and city bikes. The system itself is located inside the rear planetary hub. This type of shifter can be seen, for example, on the Forward Surf city bike (3 gears).

External shifting on a speed bike

The outer type belongs to most multi-speed bicycles. It is used on both mountain and city walking models. The mechanism is made up of gear shifters and stars that form a cassette or system. Variable speed with rear and front derailleurs.

External gear shift elements. derailleur and cassette

This type of gear shifting can be seen on both the Forward Dortmund city bike (7 speeds) and the Forward Agris mountain bike (24 speeds). You can customize this switch yourself by examining the mechanism.

Bicycle chassis design, principles of operation. video. Combined mechanism

The combined type is a combination of external and internal mechanisms. It attaches to the bike’s rear wheel hub.

The combo derailleur is a hybrid of the external and internal types of bike shifting.

This mechanism is extremely rare, since it has collected all the negative aspects of both external and internal gearshift systems. It is configured only by a professional.

Switch classification

In the modern world, there are many companies that create equipment for bicycles. The best quality models are made by corporations such as Shimano (Japan) and Sram (America), producing entire lines of derailleurs.

Devices for professionals:

  • Shimano XTR, Sram ESP 9.0 and Sram ESP X.0 are leading the way in price and quality. They are mainly used in competition bicycles. They are characterized by low construction weight.
  • Shimano deore xt, Shimano Saint, Shimano slx finished second in the same category. Used in bicycles with 27 gears.
  • Shimano Deore LX, Shimano Dura-Ace, Shimano Hone. 3rd place. They are designed for devices with the maximum number of speeds.

Sports bike lines:

  • Sram ESP 7.0 and Shimano Deore are similar designs. Made from highly durable components and designed for 24 gears.
  • Sram ESP 4.0, Sram ESP 5.0, Shimano Nexave and Shimano alivio are cheaper than the professional line. They can handle up to 24 speeds and are designed for touring bike models.

Sram ESP 7.0 derailleur specially designed for sports bikes

Hobbyist Switch Line:

  • The Sram ESP 4.0, Shimano C201 and Shimano acera are bundled with cheaper entry-level hybrids and mountain bikes. Withstand up to 24 gears.
  • Sram ESP 3.0, Shimano Nexus and Shimano altus are designed for touring, city bikes.
  • The Shimano tourney is built for a calm, smooth ride. Shifts 21 gears.

There is no fundamental difference in the adjustment and operation of different switch lines from the same company. For example, different Shimano derailleur groups work the same and are interchangeable. Let’s say that the drive of eight-speed Alivio, Altus, Acera switches can be equipped with nine-speed Deore, Deore XT, Deore LX, XTR systems and vice versa.

What can affect the quality of the switches

It is important to find out what caused the problem.

Stretched rope

This defect is regulated by a drum on a shifter.

  • When the chain moves silently and bounces on large stars with difficulty, then the cable is stretched. Turn the drum clockwise until the part is tensioned to the desired position.
  • In the case when the chain does not want to go down to small stars, relax the cable by turning the drum counterclockwise.
  • Check the operation of the speed switch. Twist the drum if necessary. Adjust until the chain bounces smoothly.

Broken cable

If the part is damaged, it must be replaced.

  • Unscrew the fixing screw on the lintel.
  • Disassemble the shifter to remove the cable.
  • Insert a new one, treat with special grease.
  • Run it through the shirts and put them back in place.
  • Secure the new cable to the derailleur.

Changing the cable on the bike. video. Parallelogram spring problems

For better operation of the return spring, you need to wash it. Then lubricate after cleaning.

Rooster bent or broke

If the foot of the rear derailleur is oblique, then the mount is bent. You can fix this defect yourself.

  • Hold the foot with one hand and grasp the switch with the other.
  • Carefully, without sudden movements, level the position of the cock until the rear frame is level.
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Deformation of the switch

A common cause of such a breakdown is a blow from a bicycle. Usually the rear derailleur suffers, the front derailleur is very difficult to bend. After a breakdown, it is worth checking which parts are broken.

  • If this is a frame. align or change the part.
  • If the screw that adjusts the chain tension or the eyelet that secures this screw breaks, then it is better to replace the parts. Otherwise, the speeds will switch very badly.

How to adjust the rear derailleur

The rear derailleur is a machine that transfers the chain from one sprocket of the rear wheel to another. Today, the vast majority of high-speed bicycles are equipped with such a switch.

Most high-speed bikes are equipped with a rear derailleur

The rear derailleur consists of the following elements.

  • Switch frame. The number of bike speeds depends on its length.
  • Two rollers that guide the chain: guide and tensioner roller.
  • The mechanism itself (parallelogram).
  • Fixing bolt.
  • Low gear stop. screw marked L.
  • Top gear stop. screw marked H.
  • Cable guide groove.
  • Tensioner adjusting screw.

Setting the rear derailleur is needed if the mechanism is out of order, the chain jumps over the necessary stars, the speed does not switch, a grinding or loud sounds are heard. You can configure the mechanism and debug its work yourself. You will need a Phillips screwdriver and a hex wrench

First, make sure the derailleur is vertical and parallel to the bike. If everything is in order, you can proceed to the setup. For convenience, turn the bike upside down, placing it on the saddle and handlebar, this will give access to the switch itself and the adjustment screws.

    First, lower the chain to the smallest sprocket. Do this with the shifter on the right handlebar of the bike, it is she who is responsible for the rear derailleur.

Correct cycling gearshift setting

Modern bicycles equipped with a gear system allow you to move quickly and with minimal energy losses in any conditions: long climbs, rough terrain, roads with sharp turns, which require constant changes in speed and gear ratio. This can also include driving against the wind, off-road, poor quality asphalt. In general, the value of the transmission unit is simply colossal, especially on mountain bikes.

Despite the invaluable help, the transmission is great and requires frequent attention, care, and sometimes long and tedious fuss. One of the components that needs to be spent periodically is the shift mechanism, which consists of front and rear derailleurs. At first glance, the arrangement of these parts seems complicated. In practice, setting up gear shifting is very simple.

Why bike speeds don’t shift well

Usually, the thought of needing to fix derailleur problems comes when the chain is shifting too hard between the stars, or the gears are not shifting at all. The problem visits suddenly, as an option, you can contact the master.

However, this issue can be resolved in the service in a couple of minutes, and the money will have to be paid in an hour. Maybe you should tinker yourself?

Before proceeding with the instructions for setting up the bike speed system, let’s determine why it does not work correctly:

  • Switches are damaged. A complete replacement is needed to solve the problem.
  • Deformed cock. protection of the rear derailleur. Usually it is advised to change, but once you can straighten.
  • Spring worn or stretched cable. Replacement required, switch setting.

Very often, all the components of the transmission are in good condition, and the gears still shift poorly. New parts, or small workpieces installed in a transmission unit are a common cause of poor chain sprocket travel.

Setting switches at home

Now let’s figure out how to set up the speed system ourselves. Derailleurs on bicycles with multi-gear transmission are divided into front and rear. The latter are most vulnerable when riding in a variety of road conditions, the risk of damage is higher compared to the front ones, but the adjustment must be done at the very beginning. Obviously, the rear derailleur serves more stars, so it takes longer to set up.

Rear derailleur setting:

First you need screws L and H. they are clearly visible, no need to look. Also includes a cable adjuster, tension and fixing screws.

  • H is used to align the roller with the small rear sprocket. By tightening the screw L, we set the roller on one straight line with the large rear sprocket.
  • Set the highest speed on the shifter.
  • Tighten and fix the cable with the locking bolt.
  • Large gears should be included without interference, otherwise, using the adjuster, the cable is slightly weakened. Additional tension will be needed if gears are poorly reset.

Actually, the adjustment itself is made, it remains to adjust the switching accuracy. This is especially true for systems with a large number of stars. To do this, the chain is installed on a large chainring at the back and a small one at the front. By tightening the tension screw, we achieve the optimal position of the roller. as close as possible to the cassette. The same must be done and vice versa: set the chain to the maximum sprocket in the front and the minimum sprocket at the back. The roller should not rub against the cassette, just be located next to it.

How to properly set up the switch in front:

  • Check device attachment.
  • Release cable tension at minimum speed.
  • Use screw L to create a gap between the derailleur body and the chain (1 mm).
  • Secure the cable with the adjusting bolt.

The same should be done with the H-screw. The maximum speed must be set, and the gap with the chain must not exceed one millimeter.

Adjust the speeds on both derailleurs until the chain is free to swing from one chainring to the other. If it goes hard, you need to adjust the correct position of the cable using the adjusting bolt.

After all the manipulations, the entire system is checked. To do this, you need to ride a bike and try all the recommended gear ratios. Note that on mountain bikes, the transmission adjustment is a common periodic procedure, and if suddenly the transmission goes tight, we are not in a hurry to draw conclusions about the breakdown, but we do what is described above.

Do not think that a high-quality transmission does not need to adjust the shifting system. Yes, it may be necessary to do this less often for shimano components, but sooner or later you will still have to face.

We just saw an easy way to adjust the front and rear derailleurs. Is it really necessary? Adjustment of the shift mechanism is necessary for the transmission, like tires for a wheel. Timely assistance to the “traffic node” will allow not only to solve current problems, but also to prevent them in the future. Eliminate all inconveniences in time and ride with pleasure!

Adjusting the bike speed switch

The process of changing the speeds occurs due to the fact that the cable is weakened, and then it goes into a state of tension. A high-quality setting may be necessary if the mechanism for changing the speeds on the bike does not work well or is not clear enough. Also, another variant of the situation may be the replacement of old parts with new ones.

Reasons for poor performance

So, adjusting bike speeds starts with the rear derailleur if you need to adjust both. Otherwise, we set up exactly the one that needs it. But first, it’s worth understanding what exactly are the reasons that the gearshift system works badly:

  • The cable is stretched;
  • The return spring does not work well;
  • Rooster. a metal part that protects the frame and the switch from deformation upon impact. is damaged;
  • There have been changes in the switch itself.

It doesn’t take much effort to solve the first possible problem. All you have to do. just increase the tension level of the adjusting drum rope. In the case when the cable is very stretched, then it is changed to a new one. If the problem lies in the spring, it should be properly cleaned under a strong stream of water, and then well lubricated with special grease. If the rooster is deformed, then you can notice it on the crooked gearshift frame. If the level of deformation is small, then you can do it yourself. To do this, grasp the rear derailleur and frame and bend the part to the proper level. But this technique is not long-term; in the future, the cock will require replacement. It also often deforms during impact. Deformation in the front derailleur is rare. If the frame is bent, it can be leveled, but if it burst and cracked, then only replacement will help. Deformation of the chain tension adjustment screw may also occur at the rear. This problem is not global, but it will eventually lead to the need to replace the switch.

Rear derailleur setting

The correct setting will help you to effectively and efficiently switch gears on your bike. The setting of the rear derailleur will be of good quality if all the defects that have occurred are eliminated, and all the details. new or in relatively good condition.

For those who are engaged in such a business for the first time, you need to know that this element of the bicycle structure in its design has two screws, which are indicated by the letter system: H and L. You need to start by choosing a higher speed, while the chain is located at the smallest of all the stars that are in the cassette. Now we turn the screw H to the position so that the gearshift roller goes down to the position from the small star. We turn to the low speed group and stop at the one when the chain position is on the largest of the cassette stars. Rotate the screw again, but now with the L value so that the roller aligns with the position of the large star. On the shifter, the rear derailleur is at maximum speed. This will allow the cable to be properly tensioned so that it fits in the groove next to the fixing bolt and just tighten it. You can check the correctness of such manipulations if you switch speeds on a bike of a high category. If they turn on with difficulty, slightly loosen the cable tension. If the reset is not going well. a decrease in speed, then the cable must be pulled on the contrary.

The last stage of the adjustment is the smoothness of the gear change. To do this, you need to fix the chain on the small sprocket at the front, and on the large sprocket at the back and roll the pedals back. In order to adjust the gearshift on the bike correctly, it is worth installing the upper roller as close to the star as possible, but not touching it. This moment can be achieved by rotating the tension screw. This customization item is available on more expensive bike variants. On cheap models, it is most often absent.

Front derailleur

Let’s move on to the next step in adjusting the bike speeds. Here the whole process is much easier and faster. Make sure the front derailleur is properly installed and secured to the frame before starting work. Determining this is elementary: from the largest star on which the chain is fixed, to the frame there should be about 3 mm, and the frame itself should be parallel to the arrangement of the stars. Now let’s proceed to the direct setting of the front derailleur. We set the minimum speed. Remember that the chain is located at the front on the smallest of the stars, and at the back on the largest. Loosen the cable and turn the screw L until a distance of 1 mm is formed between the chain and the frame. Then we attach the cable, as in the case of the rear derailleur, and tighten it well, but still not zealous. The whole process must be well experienced. Now we turn to absolutely opposite actions at the minimum speed and rotate the screw H until the same minimum gap is formed. If at the same time it is difficult to put the chain on large stars, then the screw should be slightly loosened.

You can only find out the quality of the work performed in a practical way. While riding, we begin to switch speeds on the bike. If the chain does not respond well to a decrease in speed, then a tension adjuster is installed on the steering wheel switch. Rotate it until the desired result is achieved. If the problem is with high speeds, then the cable must be pulled using the same manipulations.

Only practice will tell you thoroughly how to adjust the speeds on your bike, so don’t be afraid to act on your own and you will succeed. The ability to switch speeds on a bike conveniently and correctly is a guarantee of a comfortable ride.

Bicycle gearshift adjustment

During the operation of the bike, it is often necessary to carry out some minor repairs: replace or pump up the camera in the wheel, tighten the brakes or adjust the gear shift.

Changing the speeds is necessary in order to properly distribute the load on the cyclist at different stages of the path. By increasing or, conversely, lowering the gear, you can make it easier to climb a mountain by increasing the number of revolutions or, when descending from a mountain, develop a higher speed.

It is very important to choose a good, high-quality switch that will be easy to set up and will not fail along the way. Many cyclists prefer the Shimano brand in this regard.

The change of speeds occurs due to the weakening or, conversely, the tension of the cable inside the mechanism that moves the switch. It has a fairly simple mechanical design, so the process of adjusting them can hardly be called a difficult and difficult task. There are many models that are fairly easy to set up and operate, such as those manufactured by Shimano.

If you need to adjust both the front derailleur and the rear, it is worth starting the procedure from the rear, because its position greatly affects the settings of the front.

Before adjusting, make sure that the switches are intact, not deformed, and interact correctly with each other. In addition, it is worth checking the degree of wear of the parts and replacing them if necessary. Shimano derailleurs are particularly durable. Also, all dirt, dust and residual oil or grease should be removed.

Adjustment tools

  • Screwdriver;
  • Hex key set.

Rear derailleur setting

For greater convenience when directly adjusting the bike, it can be turned upside down with the wheels, onto the handlebars and saddle.

Before adjusting the rear derailleur, loosen the cable tension, then put the first gear. If this cannot be done automatically, then you should manually throw the chain onto the large sprocket (and to the small one on the pedal gears).

First, it is worth adjusting the special limit screws that prevent the chain from jumping off when moving to the outer sprockets. To do this, carefully tighten the screws marked L, low (for low gears) and H, high (for high gears). This must be done very carefully, not overdoing it, since if these screws are loosely tightened, the chain will jump off the sprocket, but if it is strong, then this can prevent the chain from moving to the extreme sprocket. After that, you can already directly adjust the rear derailleur. The essence of the whole setup is to adjust the position of the rollers so that when pedaling it does not touch the teeth of a large sprocket. If, when twisting, the chain does not come off well from large sprockets to smaller ones, in this case it is necessary to further loosen the cable tension by turning the pedals clockwise. Adjustment procedures should be continued until there is a clear gear change. Quite easy to adjust Shimano shifters.

Front derailleur setting

When adjusting the front bicycle derailleur, you also need to adjust the low and high gear stops. To do this, as in the rear, it is necessary to loosen or tighten the stop screws. Correct setting will prevent the chain from bouncing and binding when shifting. The next step is to secure the drive cable. To do this, it will need to be placed in a special groove located under the fastening screw.

After adjustment, it is necessary to check how the load transfer is obtained. To do this, you can ride a bike a little. During the movement, the chain should be thrown over to the adjacent sprocket without problems and in no case should it touch the bike frame.

It is best to apply new grease to the parts after adjustment.

In addition to adjusting the gear system for a more comfortable and pleasant ride, when adjusting the bike, you can also adjust the front fork with shock absorbers.

Adjusting the shock absorber fork

There are several tuning options for the bike fork:

  • First, you can adjust the spring rate of the shock absorber. This setting is called preload and is required when changing riding style. Adjustable for individual style and weight of the cyclist;
  • Another type of bike fork shock adjustment is rebound. It is responsible for the rate at which the spring returns to its original state after deformation. With this setting, the spring quickly returns to its original form, which is very important for tracks with a sharp change.
  • The third type of setting is called compression and is the opposite of the previous settings. In this case, the shock absorber, on the contrary, slows down the compression speed of the fork.
  • Another type of setting allows using a certain switch to make a rigid fork out of a regular plug. It is called lockout. Not available on all types of plugs. Shimano Lockout forks.
  • The last setting. extension control. is designed to adjust the fork travel. Usually set up for different driving conditions, whether it is city or rough terrain.

how to adjust gear shifting on a bike