How To Disassemble The Gearshift Knob On A Bicycle

How to set up your bike’s shifters

Every cyclist sooner or later faces the problem of poor gear shifting on a bicycle.

There may be several reasons for this. damaged cables or dirty shirts, an extended chain, poorly tuned front or rear derailleurs. It is the latter circumstance that most critically affects the quality of gear shifting of a bicycle and can transform your ride into sheer torment.

Many beginners trust this procedure to experienced mechanics. This is the correct approach. But over time, you realize that you need to learn how to independently make the specified setting. This will not only help to save a certain amount of money on the services of a bicycle mechanic, but will allow you to independently, at any time, adjust the speeds, ensuring the perfect gear shifting of the bicycle throughout the entire trip. This text contains specific steps, following which, even a beginner cyclist will be able to independently adjust the speed on his bike.

Rear derailleur setting.

The first thing to start with the adjustment is an external examination of the rear overhang. You need to make sure that the gearshift cable is securely attached and supplied, its integrity, cleanliness and no wear of the upper and lower derailleur rollers. And also, the flatness of the foot, which during the operation of the bicycle can deform when falling.

It is very easy to check the pad flatness. you need to look at the rear of the derailleur and make sure that the corresponding sprocket of the cassette or ratchets, as well as the upper and lower roller of the derailleur, are in a line perpendicular to the ground. If all of the above conditions are met, you can safely proceed to setting.

It is necessary to set the chain to the minimum rear sprocket, respectively, turn on the maximum reverse speed on the bike. To carry out the adjustment, both the front and rear transfer have two adjusting screws on their body, designated by the letters H and L (High and Low, respectively). Since at the beginning of the adjustment, the chain was set to maximum gear at the rear, for adjustment you need exactly the screw with the letter H, which is responsible for adjusting high speeds. Rotating it clockwise or counterclockwise, they achieve such a position of the switch foot so that both of its rollers are strictly in line with the smallest back sprocket. After that, you must engage the minimum reverse gear, in which the chain is on the largest sprocket at the back. And already with the second screw, denoted by the letter L, make an identical adjustment before aligning the rollers with a large sprocket.

Sometimes a situation arises when, after correct and careful tuning and adjustment of the rear derailleur, a problem arises when shifting into high or low gears is poor. This is due to a strong or weak tension in the gear shift cable. This adjustment can be done in two ways. with a special regulator on the rear derailleur, or with a regulator on the gear shift knob (shifter). Which option is used on a particular bike depends on the level of equipment set by the manufacturer. If the chain is thrown poorly into lower gears, the tension of the cable should be increased, and with poor dropping to higher gears, on the contrary, it should be reduced.

On the rear transfer of medium and high level there is the possibility of another adjustment. Distances of the idler roller (top) to the cassette stars (chain tensioner adjustment). It is produced as follows. The chain is installed on the largest sprocket at the back and the largest at the front. In this position, the rear derailleur foot will be very tight. And with the adjusting screw, you need to achieve a distance of approximately 5mm from the top roller to the sprocket teeth. It is at this distance that the smoothest and most precise gear shifting is carried out. It is not worth reducing it, as there may be a risk of rubbing the roller with the sprocket teeth and damage it.

Setting the front derailleur.

Before adjusting the forward throw, the first step is to ensure that it is correctly positioned on the bike frame. There are two recommendations for beginners. The first is to make sure that when the largest chainring is engaged in front, its teeth are a short distance from the bend of the derailleur frame, as well as at the same distance from it. Moreover, in no case should they touch the frame or, on the contrary, are far from it.

The second is the parallelism of the switch frame to all the stars in the horizontal plane. That is, if you look at the switch from above, then its frame should be parallel to the stars of the system.

You need to start the adjustment by setting the chain to the minimum front and maximum rear sprocket. Next, you need to Unscrew the bolt, which fixes the cable on the switch housing. After that, he will take his natural position and you can proceed directly to the setting. Turning the screw marked L (Low) in different directions, you need to set the gap between the chain and the switch frame in the region of 1-2 mm. It is this distance that will ensure perfect shifting, and also eliminate the possibility of chain friction into the derailleur frame during driving. After that, it is necessary to fix the shifting cable with a slight interference, after making sure that it lies in the required groove in the clamping area. Set the chain to the maximum chainring and minimum rear sprocket, using the adjusting screw marked H, the same adjustment is made until the minimum clearance is found between the chain on the large chainring and the derailleur frame. If, after carrying out the above procedure, difficulties arise with the inclusion of low or high forward speeds, it is worth adjusting the tension of the shift cable, similar to setting the rear derailleur.

Having mastered both types of speed adjustment on a bicycle as quickly as possible, you will protect yourself from unpleasant surprises that may arise during the ride, Having the opportunity to make the necessary adjustment at any time, you spent a minimum of time and effort.

How to properly switch gears on a bike?

Bicycles designed for sports or walking are equipped with a multi-speed transmission, so the biker has the ability to change gears depending on the situation on the track. Manufacturers produce 18,21,24, 27-speed bicycles. However, from most beginners you can often hear that in so many gears on a bike, x is scary, they get lost and DO NOT imagine how you can confidently cope with so many speeds.

Let’s first figure out why you need gears on a bicycle, as well as how many there can be.

It’s simple enough. bike gears are needed to keep your knees healthy and comfortable to ride. With their help, you should set your optimal cadence, that is, the cadence per unit of time and the pressure on the pedals. This will allow you to optimally spend energy, save your bike and health. Your cycling will be extremely productive in any terrain.

The optimal number of revolutions per minute is individual for the biker and depends on many factors. His physiology, age, experience, driving style and terrain. On average, beginners are recommended to cadence 80-100 (110) rpm.

Now let’s figure out why we need gears on a bicycle in such quantities, because this is NOT a motorcycle and NOT a car?

In reality, experienced bikers ask NOT to be intimidated by multi-speed cycling equipment, because as soon as you learn how to pedal correctly, then not all of them will be involved in your work, for example, 27 speeds, but almost two less.

So how do you know how many bike speeds you have? It depends on the number of stars, on average, manufacturers like to produce 21-24 speeds, that is, when there are 3 gears on the front wheel and 7-8 gears in the rear.

How is the mechanism for gear shifting?

On a modern mountain bike, there is usually a system of 3 stars of different sizes in front, there is also a group of stars in the back, the so-called cassette, but there are more stars, here are 6 to 10.

The system in front consists of:

  • A small star, which is responsible for climbing uphill at low speed, but gives a lot of thrust;
  • Average star, also called marching or walking. As a rule, the largest part of a cyclist’s path passes through it;
  • Large sprocket designed for driving on asphalt, flat surface. Wherever serious effort is not required, it allows you to drive with great power at high speeds.

The set of stars, placed at the back, has the same logic, only the size goes the other way, from the largest, which is closer to the frame, to the smallest outer.

Gear shifting is assisted by mechanisms on the steering wheel, called shifters or shifters. Most of the shifters have a trigger switch mechanism, some hybrid bikes are equipped with a shifter like a rotation handle, and more advanced ones have a shifter combined with a brake lever.

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The trigger shifters are controlled using levers, and the grip-shift is a pivoting method, this is in more advanced bikes. There are two levers for each Shifter, for downshifting and upshifting. The trigger mechanism of action is as follows. the voltage from the shifters is transmitted through a cable to the switches, which are installed on the wheels. The rear group of stars changes the position of the chain on the stars using the rear derailleur, for the front system there is a switch in front.

The shifters can have dials showing which gear you are currently in. Some models have replaced the dials with a mini-display. Beginner cyclists often look at shifters, and experienced cyclists, after moving the pedals, feel what gear they are riding in.

How to use the switch correctly?

To avoid increased wear on the rear wheel cassette, front sprocket system, chain breakage and NOT damage your bike’s gearshift system as a whole, you need to know a few basic rules for shifting gears. So:

1. When changing speeds on a bicycle, the maximum misalignment of the chain should be inadmissible, for example, such a position as in front is unacceptable 1. Behind 8, and vice versa.

Using the example of a 24 (38) high-speed transmission, we will show how to combine gears:

The easiest gear is when the stars are in 1-1 position. In the process of riding, one should strive for a larger number, Increase power and speed, however, do not resort to the maximum increase in movement often, as this is an additional load on both the transmission mechanism and the joints of the legs.

The main guideline is that pedaling should not be difficult for you, but not very easy, the effort should be comfortable.

2. When deciding to change gears, especially for chainrings, you definitely need to lower your efforts a little and do not put too much pressure on the pedals. Why? The fact is that the front group of stars works with the upper part of the chain, which at the moment of movement experiences maximum tension, therefore, it can break if you change the position of the speeds, and do not stop pedaling with effort.

3. Switch should only be done when you are on the move!

4. Need to switch several speeds at once? Do it in stages, do not skip.

Also, when switching, you need to squeeze the lever of the shifter as much as possible, which is responsible for the front group of stars.

How do you know if you did everything right? A great way to find out if you’ve learned how to shift gears right. This is to listen, if the chain is laid down correctly, then you will NOT hear any extraneous sounds in the form of clanging or crackling. of course, provided that you have a chain in proper condition, it is lubricated, and not old, and so on. The only thing a cyclist can catch. So it’s a little click.

How to catch and feel the moment when you need to change speeds on your bike? An important condition for this. Learn to focus on your own feelings, if you don’t have enough strength and you started to pedal idle, then it’s time to switch to the next speed.

So, when the answer to the question of how to change gears on a bicycle has become clear, you need to Get as much of your own experience as possible in order to start feeling the moment when and how you need to change gear. For this train in different conditions, for example, on the highway, go up and down the mountain, Feel how the revolutions of each wheel change when the speeds on the bike change. Exclusively in this way, you will hit your experience with the bike transmission, learn how to pedal with the optimal cadence for you.


Place the bike on a work stand.

Move the front derailleur to the smallest link in the chain.

Remove the chain and place it on the bottom bracket of the bike frame.

How Long or Short Switch Cage Affects Performance?

There are advantages and disadvantages in both long and short shifters.

Longer cages are better for a wider range of gears, providing a more stable chainline and less sag, but especially for mountain bikers, who are likely to have a longer cage, there will be a lot of mechanics hanging from your bike when weaving between stones. Short and medium cage switches are less likely to bump into objects. It is generally best to use the shortest derailleur cage as possible if you can avoid kinking the chain at the extremes of the cassette, for example by using the largest on the sprocket and guide sprocket.

Smaller cages tend to have faster gear changes, are lighter and less prone to damage.

Disassemble the lower cartridge bracket

Place the splined carriage tool on the drive end of the cartridge.

Turn the slotted carriage tool clockwise with an adjustable wrench to loosen the cartridge. Unscrew the cartridge and remove it from the carriage.

Turn the non-drive side of the cartridge counterclockwise by hand to loosen it and remove it from the carriage.

Clutch switches

Rear clutch switches are increasingly used in mountain bike transmissions. The “clutch” function ensures that voltage is retained in the switch throughout its entire movement.

On uneven surfaces, the weight of the chain can cause the rear derailleur to bounce and move, resulting in chain noise and the possibility of it dropping completely off the chainrings. The clutch mechanism helps the chain stay more trained and therefore improves chain safety.

Shimano and SRAM use different naming conventions for their clutch shifters. Shimano calls its clutch mechanism “Shadow” or “DynaSys”, SRAM uses the term “Type 2”.

The feel of gear shifting can sometimes feel a little stiffer when engaging the clutch, so Shimano gears have the ability to disengage the clutch if needed.

What you need to know when buying a rear derailleur

Cage length

Rear derailleurs are available with different cage sizes to accommodate the varying amount of chain slack that occurs between or in front of the large sprocket and small sprocket. The distance between the top and bottom derailleur pulleys determines the length of the cage.

A wide range between small and large teeth on your rear cassette (e.g. 11-32) or a large difference between sprocket sizes on the front crank arm may mean that more sag is created when going to smaller rings. Longer cages allow the switch to compensate for more slack and keep the chain trained.

Because mountain bikes typically use long range cassettes, they tend to use longer derailleurs, similarly, triple chain road bikes tend to use longer cages to accommodate the larger difference between the smallest and largest chainring.

To complicate matters further, the three major manufacturers each use different terminology for their small, medium and large switch housings.

Switch Cell Length Brand Name

Shimano Campagnolo scar
Short cage SS Brief Brief
Middle cage GS middle middle
long cage SGS triple WiFli / Eagle

So what size cage do you need for your drivetrain? Well, the answer can be quite tricky. First, it is generally best to stick with your current group set brand and stay closer to your current hierarchy.

  • Mountain bikes with wide gear ratios or triple chain road transmissions, use long or medium cage derailleurs
  • Dual chain road bikes use short cage derailleurs

If in doubt, consult the derailleur “tine capacity” in the product description and make sure this number matches the size of your transmission. The rear gear must have sufficient capacity to accommodate the smallest and largest cassette sprocket and chainring, and a description of how it is calculate, given below.

Cassette buying guide

Shop cassettes on Wiggle

Rear Derailleur Buying Guide | Wiggle Cycle Guides

What are rear derailleurs?

Rear derailleur (often referred to as “rear gear”). It is a mechanism that moves the chain from gear to gear on the cassette at the back of the bike. The right gear lever on the steering wheel pulls on the cable (or uses electronic signals) to move the switch, which in turn moves the chain to the Corresponding tooth on the cassette.

Gear selector. This is the main part of the drivetrain and one of the heaviest components on a motorcycle, you must make sure it is compatible with the rest of your bike and is in good condition.

For more information on group sets Click the link below:

Bicycles / maintenance and repair / derailleurs / rear derailleur adjustment

From Wikibooks, Open World Books

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Removing the connecting rod

While holding the connecting rod with one hand, remove the connecting rod pinch bolt using an 8mm Allen key or 14mm socket wrench.

Fully extend the crank puller, return threads counterclockwise. Screw the male thread of the connecting rod puller into the connecting rod. While holding the connecting rod, return the inner head of the connecting rod puller clockwise until it stops.

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Place a large adjustable wrench on the flat parts of the connecting rod puller. While holding the adjustable wrench in place, place the 16 mm wrench on the internal screwdriver. Turn the inner actuator clockwise until the connecting rod does NOT come out of the spindle.

Repeat this section to remove the other connecting rod.

Popular brands

The most popular brand currently is Shimano. This company is known for producing a wide variety of switches, ranging from the cheapest and ending with professional models. Many models from the manufacturer Shimano allow you to choose the best option for any bike: Road, city or mountain. For beginners, the “Sora” or “Tiagra” model is an excellent option.

Among the popular manufacturers, Sram is worth noting. This company manufactures speed switches in different price segments. The main difference is the absence of thematic lines. Among the simplest and cheapest are the models “X-3” and “X-4”, and among the highest quality “X-7” and “X-9”.

Shimano’s main competitor in the near future is the Taiwanese manufacturer Microshift. The main feature of the company is good quality at low prices. Many European countries have already appreciated the speed switches of this company. It is worth noting that among the advantages of this brand there is another very important one. full compatibility with Shimano derailleurs. This plus can be used very profitably during repairs.

For lovers of the highest quality, pay attention to the German manufacturer Rohloff. Its planetary hubs are carefully selected and hand-assembled only. There are a lot of advantages in the products of this company, but it will be quite expensive to pay for them.

Bicycle speed selector: types and choices

Modern bicycles are equipped with speed switches, which are especially convenient to use when riding on terrain with various terrain. Of course, in order to understand which switch option to choose and how to properly care for it, it is better to get acquainted with it and its features in more detail.

Description and purpose

The greatest comfort while cycling and excellent energy saving is provided by a gearshift or derailer. With it, you can choose the optimal mode of travel, which is completely suitable for a specific route. The switch is especially useful if the track changes from asphalt to off-road.

You also have to use the device when accelerating, smoothly braking, climbing uphill. It is worth noting that thanks to the switch on the bike, you can maintain a constant speed, which is very convenient when overcoming long distances. Difficult weather conditions in the form of strong winds or slippery tracks are also easier to bear with the derailer. It’s no secret that a bike is an excellent cardio equipment, which is greatly facilitated by the speed switch.

Derailer, as we know it today, was invented in the 50s of the XX century by an Italian cyclist. The classic design is a block of stars. The unit, which is installed in the front, is called a system, and that at the back is called a cassette. The speeds are shifted by shifting the bike chain to the side, which in total allows the chain to lie on the selected sprocket.

All stars differ in diameter, and the chain has a fixed length. Thus, it sags, but this moment is removed by a special tension spring, which is located on the rear of the switch.

The switches are controlled by cables. The tension of the cables can be adjusted using the shift knobs. There are shifters on the steering wheel, which pull the cable. When you press the shifter, the frame is displaced, and the chain is thrown to the adjacent star.

There is also an option where the switch looks like a drum, which simply rotates to the desired mark, indicating the speed. The bicycle derailleur can also be designed as a trigger or a combination handle. Recently, electronic control of gear shifting is gaining popularity, which allows you to shift through all the stars at once.

It is worth taking a closer look at how a traditional speed switch works. The system speeds are located on the left side of the rudder handle, and the cassettes are located on the right side. When shifting the chain from one chainring to another, it is important that the pedals rotate. Also, it is impossible in the process of switching between speeds, pedaling back, so that the chain does NOT jam, and the transmission does NOT break. It is worth noting that there is no rear derailleur on models with foot brakes.

How To Disassemble The Gearshift Knob On A Bicycle

Modern manufacturers present different types of switches, which are designed for different types of cycling.

  • The external derailleur is the most common type, which consists of front and rear derailleurs. This option works by throwing the chain between the stars through the frame. The advantage of this switch is its lightness, clear design, and a large number of speeds. Also, energy is NOT lost due to friction of mechanisms inside.

However, it must be taken into account that such a switching system is subject to weather conditions. Over time, the chain will wear out due to strong distortion. Gears can only be changed while driving, and it is important to protect the bike from falling. Among the disadvantages, users also note the need for frequent maintenance.

  • The internal or planetary derailleur is a mechanism located in the inner part of the hub at the back. It has only one star in the back and front, and a chain. The number of speeds in such models starts from 3 Most bicycle models with planetary hubs are also equipped with an integrated brake system, which is very convenient.

Among the advantages should be highlighted High resistance to adverse weather and bad roads, High reliability, durability, ease of maintenance. Also important is the pedaling gear shifting. However, you should be aware that the internal switches have an impressive weight. In such models, there is excessive friction of the nodes, which leads to difficulty in movement. Among the minuses, it is worth noting the complexity of the repair.

  • Combined. a hybrid of planetary and external switches. Most often they are equipped with urban models of bicycles. This type is characterized by the pros and cons of both switching devices.

Installation and adjustment

Setting the gear selector is not an easy task, and especially for a beginner, it will be very difficult to cope with it. Better to leave it to a specialist. But the rear and front derailleurs are worth learning how to set up yourself. This requires a number 5 hex wrench and a Phillips screwdriver. It is most convenient to set up when the bike is in position with the wheels up.

The rear derailleur adjustment is as follows.

  • The chain is thrown to the smallest sprocket by pressing the shifter on the right side of the steering wheel.
  • Next, the switch is unlocked, for which the screw is released, which holds the cable. This is done by unscrewing the screw marked “H” with a screwdriver.
  • This screw adjusts the stars holding the chain so that they are located along one line.
  • Now you need to pull the cable, and then fix it using the screw.
  • Next, the switch is checked for proper operation. If necessary, you can improve the transition to large stars by turning the thumb counterclockwise.
  • By pressing the shifter, the chain is shifted to the smallest star.
  • With the screw marked “L”, you need to adjust the position of the switch so that the largest sprocket and the derailleur foot are in line.

Front derailleur adjusts slightly differently.

  • The shifter simultaneously moves the chain to the smallest sprocket in the front and the largest sprocket at the rear while pressing the pedals.
  • Then the screw holding the cable is released. This is done with a hexagon.
  • With the screw marked “L” using a screwdriver, move the frame so that the distance between its inner part and the chain is about 4 mm.
  • Then the cable is pulled and the screw is tightened, which holds it.
  • To debug another star, the chain must be thrown at the back to the minimum star, and in the front, left on the smallest. If the chain touches the frame, then it is necessary to adjust the lamb cable, which is located on the left side of the steering wheel. It is worth remembering that the lamb must be mixed counterclockwise.
  • The third sprocket is adjusted with a screw marked “H” and a screwdriver.

How to choose?

The choice of gear shifter on a bicycle primarily depends on the price issue. However, it is important to consider some technical characteristics. One of the most important is the type of fastening. The following mounting options are currently available:

  • Clamp to the frame tube;
  • On a special site;
  • Bicycle carriage.

It should be borne in mind that the last two options are quite rare guests on the modern market. When fastening with a clamp, take into account the thickness of the bicycle frame.

When choosing a derailleur, it is also important to choose the type of steering cable wiring. Most often, the cable is pulled to the speed selector or along the down tube under the carriage or along the top tube of the frame. Thus, there are universal derailleurs, as well as top or bottom pull.

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Another important point is the parameters of the star system. Two or three speed systems are most common. It is also important to know the number of stars in the rear derailleur as the chain thickness depends on this. It is better to take into account the dimensions of the Largest sprocket, the capacity of the system, the minimum difference of teeth on the large and medium sprockets, the length of the carriage axis and the angle of the chain stays.

Subtleties of operation

The gear shifter on a bicycle works precisely and for a long time if it is used correctly. To do this, you should read some recommendations. For example, switching between speeds should only be done while cycling. It is also recommended to reduce the pressure of the feet on the pedals when changing gears, especially this will facilitate the condition of the front derailleur.

Before going uphill, it is better to change gear in advance. This advice should be followed by beginners who still DO NOT know how to “feel” their transport. Also, do not shift multiple gears at once. The transition between gears should be carried out gradually so that the chain has time to jump to the previous sprocket.

In you will learn how to choose a bicycle derailleur.

general information

The modern bicycle speed selector on the handlebars offers new possibilities for optimizing riding on different road sections. On such a bike it is much easier to perform various stunts, move along uneven and mountainous tracks. The main thing is to correctly configure the node in question. To do this yourself, you need to study the main parts of the mechanism, including the shift lever and transmission.

The last block includes a set of parts that allow to take on part of the load transmitted to the cyclist. It also makes it easier to climb uphill and travel on rough terrain.

Which speed switches on a bike are better?

There are three main types of bicycle shifters:

  • External influence device.
  • Internal switching mechanism.
  • Combined system.

The internal type appeared before the external mechanism. Back in 1902, Sturmey-Archer made a similar analogue, which can be called the progenitor of multi-speed bushings. Let’s consider each of the types in more detail.

External analog and combined system

Most multi-speed bikes are equipped with this mechanism. It is used on both mountain and walking versions. The switch device consists of a controller and sprockets of different diameters. The whole unit forms a cassette system, the position of the speeds in which is changed with the help of the rear and front adjusters.

In such a device, from three to 24 speeds can participate. The adjustment of such a device can be done independently, having previously studied the principle of operation and the device of the mechanism.

The combined circuit is a mix of external and internal mechanisms. It is fixed to the rear bushing. This type is not very popular, since it combines all the disadvantages of the modifications discussed above. The node is configured only by a specialist.

Internal type of gearshift

This design is based on planetary hubs without cassettes. There are only two stars in the transmission unit. All elements are hidden inside. As a rule, in such a mechanism there is no front derailleur on the bicycle on the handlebars.

This device is used on recreational, road, city and folding bikes. The working system is housed inside the rear planetary tube. It is better to entrust the adjustment of such a switch to specialists.

Principle of operation

Before you know how to adjust the derailleur on a bicycle, you need to understand how it works. The functioning of the unit under consideration consists in pulling the cable of the front controller, which makes it possible to transfer the frame to stars of a larger diameter. When loosening the cable, the chain is thrown onto smaller sprockets.

The switching itself is carried out directly using the shifting type shifters located on the steering wheel. The rear is controlled by the right shifter, the front derailleur is controlled by the left analog. As a result, the chain is thrown among the front or rear sprockets.


How do I adjust the derailleur on my bike? First, let’s look at adjusting the rear knot. This mechanism is used on most modern bikes. It consists of the following elements:

  • Frames whose length affects the number of gears.
  • Pairs of rollers responsible for tensioning and guiding the chain.
  • Parallelogram mechanism.
  • Fasteners.
  • High and low speed limiters.
  • Adjusting screw.
  • Guide wire.

Assembling the speed switch on the bicycle on the handlebars, as well as adjusting it, may be necessary when the speed does NOT switch, the chain jumps over the sprockets, extraneous sounds or rattling are heard when the device is operating.

The unit is adjusted as follows:

  • Make sure the ESC is vertical and parallel to the bike.
  • The bike should be turned over with the wheels upwards to provide access to the adjusting screw.
  • The chain needs to be lowered to the smallest sprocket, using the turns of the shifter on the right side of the handlebar.
  • Unlock the switch by loosening the cable fixing screw.
  • Using a screwdriver and adjusting screw H, it is necessary to adjust the chain in such a way that the sprockets on which the chain lies are aligned.
  • The cable is stretched by hand as much as possible, after which it is fixed with a screw.
  • Next, the operation of the node is checked. If there are problems with transferring on large sprockets, you need to turn the handle counterclockwise, pulling the cable.
  • Then the chain is thrown to the smallest sprocket using a shifter.
  • Screw L is used to adjust the position so that the largest sprocket is in the same plane with the controller foot.

Front node setting

The types of speed switches for bicycles on the handlebars are indicated above. Next, let’s look at the adjustment of the front element. The assembly consists of the following parts:

  • The frame through which the chain runs.
  • Spring mechanism.
  • Upper and lower stop (H / L).
  • Latch and cable.

Switch configuration consists of the following steps:

  • The chain must be set at the front to the smallest star, and at the back to the maximum analog.
  • Using the hexagon, loosen the cable securing screw.
  • Using a screwdriver and screw L, adjust the position of the frame so that the distance from the inside to the chain is 4 mm.
  • The cable is pulled and secured with a screw.
  • The second sprocket adjusts after the chain on the rear derailleur is dropped to the smallest sprocket.
  • Check if the chain is clinging. If such a problem exists, it is necessary to tighten the cable tighter using the shifter. The distance from the chain to the frame should be about 3 mm.
  • Adjust the third sprocket with screw H. If necessary, increase the gap by pushing the frame outward.

Shimano derailleur

There are many brands on the market today that focus on bicycle accessories. Some of the best derailleurs are the Japanese Shimano models and the American design from Sram.

Consider the modifications and characteristics of professional Shimano switches:

  • XTR variants are at the top of the line for quality and price. Modifications are lightweight, used primarily on racing bikes.
  • Deore, Saint, Slx. used on bicycles of various categories with 27 gears.
  • Shimano LX, Dura-Ace, Hone derailleurs rank third in this line, focused on bikes with the maximum number of speeds.
  • Tourney. aggregated with 21 gears, designed for a quiet ride.

These models can be divided into two groups: for sports and recreational driving. The first category includes the following variations:

  • ESP 7.0. Derailleurs are made of very durable components, designed for 24-speed regulation.
  • ESP 4,0 / 5,0. have a cost lower than that of professional counterparts, withstand up to 24 gears, focused on tourist bike models. In addition, Sram 4.0 can be equipped with cheap hybrid mountain bike designs.
  • ESP 3.0. designed for walking and city devices.

The question arises, which bike derailleurs are the best? There are fundamental differences in the regulation and operation of different lines of controllers. For example, eight-speed modifications of Alivio, Acera, Altus can be replaced with nine-speed analogs of Deore, LX / XTR. It is also possible to do it in the reverse order.

Handlebar-mounted bike gearshift: installation and setup

The handlebar gearshift switch is used to equip urban, mountain and sports modifications. The comfort and safety of movement depends on the quality of this unit. Before using the vehicle, check the operation of this unit. The speed setting is done by tightening or loosening the control cable.