Poor gear shifting on the rear bike

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 specialists 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 marked “H”. 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 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, you can start setting up your bike 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 sprockets. If during the adjustment process any extraneous sounds arise, you can get rid of them with the help of the latch;
  • check the tension of the cable and if the tension does not correspond to the required one, 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.

Front derailleur

poor, gear, shifting, rear, bike

To adjust, you need a hex wrench and a Phillips screwdriver.

  • We put the chain on the big star at the back. Small in front.
  • Loosen the fixing screw. The position of the frame is adjusted with a screw marked LOW. Our task is to set the gap between the chain and the left side of the frame at about 0.5 mm.
  • Now we fix the cable. It is not necessary to tighten too much. Switch to a small star in the back and a large one in front. There may be interruptions. As long as it’s ok.
  • Using the screw, set the gap between the chain and the right side of the switch frame to 0.5 mm.
  • Checking the quality of the settings. If the chain is thrown over with an interference, then carry out micro-adjustments. Make no more than 1-2 turns so as not to knock out the settings. Done.

Reasons for incorrect gear shifting

When configuring switches, many may encounter some difficulties. First, a little theory. The front derailleur does not work by itself. It works in conjunction with the stars of the system.

There are special nodules on the stars, which are designed to make the chain switch better. The quality of switching directly depends on the state of these “pins”. If they wear out or wear out, then accordingly switching will suffer very much.

The front derailleur itself consists of the following components:

The frame comes in different thicknesses. Internal width depends on chain width.

  • You also need to pay attention to backlash.

Why gear shifts poorly on a bicycle

On entry-level bicycles, the transmission of the cheapest groups is installed, and when the gears start to shift poorly and jam, the owners just shrug their shoulders. what, they say, you can take from cheap rubbish.

A big surprise befalls those who buy a much more expensive bike, and after a while again encounter shifting problems. The point here, of course, is not karma, but the wrong attitude to technology.

I am by no means claiming that there is no difference between starter and top-end components. Of course, the experienced cyclist with eyes closed will distinguish the Shimano Alivio from the XTR in three clicks.

But the reasons for the fuzzy operation of the transmission do not so much depend on the class of the transmission, but on its condition and settings. In this post, I will not talk about how to configure the switches, for this a separate article will be released soon, subscribe, and I will send you a notification about its publication.

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 in question. Experts identify several such predisposing factors:

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

Correct installation of the front derailleur

You can only start the front derailleur setting 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 from dirt and lubricate.
  • The next step is to 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 upper mowing line of the teeth of the large gear. The gap should be minimal.
  • Adjust the cable tension.
  • Place the chain close to the inside of the frame.
READ  Bike Frame 13 How Tall

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 chain 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 stretches or deforms, 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.

Bicycle gears. 2 main reasons of POOR SHIFTING. Problems with derailleur adjusting.

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 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.

Common Causes of Poor Shifting and How to Fix It

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. With a bike like this, there is less hassle, but it also has fewer options. In the transmission unit of such bicycles there are only two stars: one large and one small. Multi-speed bikes, which have gained popularity in recent years, have two sets of sprockets in their transmission units: front and rear. Each cassette consists of 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 sharp jerks.

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 bolts. 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 one, on the contrary, is the smallest.

Correct setting

First of all, you need to make sure that all parts are intact and undeformed. If this is not the case, the bike components must be replaced and only then proceed to setting the speeds. In particular, it is required to check for suitability:

Of the tools, you only need a wrench to tighten the threaded connections, with which you can tighten the bolts. When replacing the cable, pliers can also come in handy to help “bite off” the excess part. The further sequence of actions depends on the type of switch.

To work you need a torque wrench

If you need to adjust the rear derailleur, then the instructions will be as follows:

  • The chain must be on the largest star in the front and the smallest in the back.
  • The bolt that fixes the rear crossover cable must be unscrewed.
  • The derailleur rollers should be set in such a position that they are in the same plane with the desired sprocket. To do this, you just need to rotate the bolt with the inscription “H” until they take the required position.
  • Pull the cable well and tighten the bolt.
  • Then the speed switches to the lowest (so that the chain radically changes its position and is on the largest star at the back and the smallest at the front).
  • The “L” screw must be rotated until the derailleur rollers are directly opposite the large sprocket.

For the derailleur on the rear wheel to work properly, it is important that the cable is not overtightened. If the transition from one speed to another is difficult, you should use the shifter. It will allow you to change the cable tension. then the switch will not work so tightly.

READ  How to customize a child's bike seat

The front steering wheel derailleur is configured differently:

  • With the help of the rear shifter, you need to go to the middle star. This is necessary in order to avoid severe distortion of the chain.
  • The chain is installed in first gear, and the bolt securing the cable is unscrewed.
  • Turning the screw “L” will move the cross-link frame so that the distance between the chain and the derailleur on both sides is the same.
  • The cable must be pulled (not too much) and secured with a bolt.
  • After that, you need to switch to the largest star in front.
  • Screw “H” should be turned until the chain is exactly in the middle of the frame.

You can adjust the adjustment results with the thumb on the shifter, as is the case with the rear derailleur. If the triggers are too tight, it is recommended to loosen the cable tension slightly. If you complete each step in accordance with the instructions, the switch will work properly.

Causes of fuzzy operation of gear switches

Cables and shirts. This is the most common problem, especially for beginner cyclists. I just wonder what a terrible state some cyclists are in.

At the end of the cable, there must be an aluminum cap that protects it from loosening. Using pliers, you can carefully remove it and unscrew the bolt securing the cable to the rear derailleur.

Release the shirt from the stops by carefully removing it from the cable. The cable itself can be left in its slot in the shifter. When he is completely naked, once again inspect for raised threads and scuffs. Spray WD40 on a rag and wipe it thoroughly.

The shirts, if they are in order, can also be used a second time. Fill them with more WD40, and gently rub there with a cable. The task is to drive out all the dirt that has accumulated during the riding period.

Here I ask you to take into account the following thing. cables and shirts do not need lubrication. Never lubricate them with thick lubricants, such as grease. Literally after a few trips on the ground, you will have a consistency in your shirts, consisting mainly of dirt.

If you need to calm the soul, then spray with Teflon spray, it dries quickly, but leaves a thin gliding layer. Which, however, will be erased after a dozen switches.

One more point. There are Teflon-coated cables, such as Shimano XTR Cable, which cost quite a lot of money. In the days of fetishism, I used only these, because of the sliding cover, the effort on the shifter is slightly less.

Unfortunately, after about a year of active skating, Teflon in places of friction is erased completely. However, these cables have a very big advantage. they come with spout stops, which effectively prevent dirt from getting in.

Returning to shirts, make sure that nowhere are too long, or vice versa, short sections, because of this, there will be increased friction in the bending places, and sooner or later dirt will accumulate there.

Bent cock. If you do not know what this part is, then here you can read a note about the bicycle cock. Sometimes it happens that a seemingly perfectly tuned rear derailleur does not work clearly, despite fresh cables and shirts.

The reason may be that during transportation, the bicycle is clamped somewhere, and the cock bent slightly. If you cannot achieve a clear gear change, then remove the cock and put it on the table.

If it is a little crooked, then you need to bend it. Do not overdo it, aluminum can give microcracks. How exactly to bend it. I will not advise. I do it in an artisanal way. I put it on the bike and pull it with my hands. Ideally, you need to edit with a special typewriter, which even takes into account the asymmetry of the dropouts.

Rear derailleur play. Move the rear derailleur towards you and away from you, keeping where the cable goes. Ideally, there should be no backlash at all, but a small free play does not represent anything criminal, especially on the initial transmission groups.

During operation, this backlash tends to increase, and then delays in switching, fuzziness, etc. begin. If everything is in order with the cables and the rooster, then with fine tuning you can overcome the negative effect of backlash.

Most often, the reason that the bike shifts poorly is a complex of problems. Dirt in shirts, a slightly bent cock, a slight backlash in the switch, poor tuning. all the tolerances add up.

over, many Catalans drive like this, and find it normal when the speeds are switched according to the principle of three forward, two back. Guys, this is not normal!

Any drivetrain, even the lowest Shimano Tourney, needs to work well. Do not get used to the bad, otherwise, even if you buy an expensive bike, you will get the same thing in a season or two.

Friends, on my site there is still a lot of useful information about bicycles and travel. I invite you to receive email notifications about the publication of my new articles, so you will always know that I have written something new. Follow the link please.

In order not to lose sight of this site: follow the link. you will receive a notification about the release of a new article by email. No spam, you can unsubscribe in a couple of clicks.

You can say thank you for the article by reposting on or :

Switching recommendations

Drive only at speeds that will not cause the chain to tilt too much. For example, you cannot set the speed to 1/8, 1/10, 3/1 (the first number is forward gear, the second is reverse), and so on. For the smallest front chainring, you can turn on 1–4 speeds at the rear, for the middle. 3–7, for the largest. 7. If you nevertheless put an incompatible gear, there will be a risk of chain jamming and spinning, as well as an increase in its wear rate.

READ  Bike 26 Wheels How Tall

On a speed bike, fast gear changes are very important, especially if you are competing. Transmission repairs should be carried out before the race, and then after, as aggressive driving can cause the shift adjustment to be out of order. If you do full maintenance of your bike at least once a season, it will serve you for a very long time.!

Why gear shifts poorly on a bicycle

On entry-level bicycles, the transmission of the cheapest groups is installed, and when the gears start to shift poorly and jam, the owners just shrug their shoulders. what, they say, you can take from cheap rubbish.

A big surprise befalls those who buy a much more expensive bike, and after a while again encounter shifting problems. The point here, of course, is not karma, but the wrong attitude to technology.

I am by no means claiming that there is no difference between starter and top-end components. Of course, the experienced cyclist with eyes closed will distinguish the Shimano Alivio from the XTR in three clicks.

But the reasons for the fuzzy operation of the transmission do not so much depend on the class of the transmission, but on its condition and settings. In this post, I will not talk about how to configure the switches, for this a separate article will be released soon, subscribe, and I will send you a notification about its publication.

Causes of fuzzy operation of gear switches

Cables and shirts. This is the most common problem, especially for beginner cyclists. I’m just wondering what a terrible state some cyclists are in.

At the end of the cable, there must be an aluminum cap that protects it from loosening. Using pliers, you can carefully remove it and unscrew the bolt securing the cable to the rear derailleur.

Release the shirt from the stops by carefully removing it from the cable. The cable itself can be left in its slot in the shifter. When he is completely naked, once again inspect for raised threads and scuffs. Spray WD40 on a rag and wipe it thoroughly.

The shirts, if they are in order, can also be used a second time. Fill them with more WD40, and gently rub there with a cable. The task is to drive out all the dirt that has accumulated during the riding period.

Here I ask you to take into account the following thing. cables and shirts do not need lubrication. Never lubricate them with thick lubricants, such as grease. Literally after a few trips on the ground, you will have a consistency in your shirts, consisting mainly of dirt.

If you need to calm the soul, then spray with Teflon spray, it dries quickly, but leaves a thin gliding layer. Which, however, will be erased after a dozen switches.

Poor Shifting. 6 Main Causes Of Bad Gear Change. Bicycle Troubleshooting

One more point. There are teflon-coated cables, such as the Shimano XTR Cable, which cost quite a lot of money. In the days of fetishism, I used only these, because of the sliding cover, the effort on the shifter is slightly less.

Unfortunately, after about a year of active skating, Teflon in places of friction is erased completely. However, these cables have a very big advantage. they come with spout stops, which effectively prevent dirt from getting in.

Returning to shirts, make sure that nowhere are too long, or vice versa, short sections, because of this, there will be increased friction in the bending places, and sooner or later dirt will accumulate there.

Bent cock. If you do not know what this part is, then here you can read a note about the bicycle cock. Sometimes it happens that a seemingly perfectly tuned rear derailleur does not work clearly, despite fresh cables and shirts.

The reason may be that during transportation, the bicycle is clamped somewhere, and the cock bent slightly. If you cannot achieve a clear gear change, then remove the cock and put it on the table.

If it is a little crooked, then you need to bend it. Do not overdo it, aluminum can give microcracks. How exactly to bend it. I will not advise. I do it in an artisanal way. I put it on the bike and pull it with my hands. Ideally, you need to edit with a special typewriter, which even takes into account the asymmetry of the dropouts.

Rear derailleur play. Move the rear derailleur towards you and away from you, keeping where the cable goes. Ideally, there should be no backlash at all, but a small free play does not represent anything criminal, especially on the initial transmission groups.

During operation, this backlash tends to increase, and then delays in switching, fuzziness, etc. begin. If everything is in order with the cables and the rooster, then with fine tuning you can overcome the negative effect of backlash.

Most often, the reason that the bike shifts poorly is a complex of problems. Dirt in shirts, a slightly bent cock, a slight backlash in the switch, poor tuning. all the tolerances add up.

over, many Catalans drive like this, and find it normal when the speeds are switched according to the principle of three forward, two back. Guys, this is not normal!

Any drivetrain, even the lowest Shimano Tourney, needs to work well. Do not get used to the bad, otherwise, even if you buy an expensive bike, you will get the same thing in a season or two.

Friends, on my site there is still a lot of useful information about bicycles and travel. I invite you to receive email notifications about the publication of my new articles, so you will always know that I have written something new. Follow the link please.

In order not to lose sight of this site: follow the link. you will receive a notification about the release of a new article by email. No spam, you can unsubscribe in a couple of clicks.

You can say thank you for the article by reposting on or :