Customize Speed Switch On Stealth Bike

Multi-speed bikes with one front sprocket. is it worth buying

The fashion for three stars ended with the arrival of 10, 11, 12-speed cassettes. The fact is that on 3×7-3×9 transmissions, three toothed gears in the front perform an important function. they overlap the Gear Ratios, allowing you to climb hills and screw on descents.

Customize Speed Switch On Stealth Bike

The number of teeth on the new multi-star cassettes has been matched to do the same with one sprocket in front. Therefore, it makes no sense to use two more asterisks. For the XC discipline, this is a Substantial Breakthrough, as the frontal throw is the most unreliable part of the bike here.

How to install

When fixing the derailer on the frame, do not rush to tighten the clamp of its fastening. First, in the case of a thin walled butted frame, overtightening will cause the seat tube to buckle. Secondly, the transfer is NOT yet set to stars.

Putting it right means fulfilling two requirements:

  • The frame should be parallel to the stars.
  • There should be a gap of about 2 mm between the teeth of the largest chainring and the frame structure, but not more than 3 mm.

Now tighten the clamp to a reasonable torque and install the chain.

Attention! Remember that frontal transfers are different. Therefore, when choosing a new one, consider the following points:

  • Number of teeth on each chainring.
  • Pull type: top or bottom (determines the cable entry. from the bottom of the frame or from the top).

Why the chain does NOT move to the front large sprocket

If from the 1st sprocket to the 2nd it tenaciously goes over without hindrance, and does NOT switch from the 2nd to the third, then the matter is in the wrong maximum position of the front crossover. You can knock it down during the repair process:

  • Incorrectly selected carriage cartridge: the length of the shaft does not correspond to the passport documentation for the bicycle.
  • The limiter for moving the frame along a large star (bolt H) is incorrectly set.

Mountain Bike Front Shimano Derailleur Adjustment

First, use the Shimano Bike Reverse Speed ​​Setting Guide. After all, a working rear dealer is one of the requirements of the preparatory measures. They also include:

  • Checking the cable and shirts. Unwrapping and jamming in the shirt is not allowed.
  • Correct installation of the transfer unit on the frame, as described in the previous paragraph.
  • Disconnected cable from derailleur.

The adjustment of the mechanism is carried out strictly in the stated sequence:

  • Adjust the low gear limiter. Switch to the smallest sprocket in the front and the largest sprocket at the back (this will be 1-1 on the shifter). Turning screw L to get the chain as close as possible to the inner edge of the frame. In this case, it should NOT tenaciously rub against the frame structure. Take this step seriously if you don’t want the chain to come off and get bitten between the carriage and the small star.
  • Connect the cable to the switches. Before attaching, screw the thumbship onto the Shifter until it stops, and then turn it out 1-1.5 turns. At the final stage, this will facilitate readjustment.
  • Adjust the upper gear limiter. By throwing the chains onto the largest chainring in the front and the smallest chainring at the back (for example, on a 27-speed bike‘s shifter, this would be 3-9). Turn screw H to move the outer edge of the frame as close as possible to the chain. Again, tenaciously should NOT rub against the transfer.
  • Adjust the accuracy by throwing the forward throw with the thumb on the shifter. Everyone does it differently. One of the ways is to sit on the bike and, with the help of the drum, select such a tension force on the cable, at which the chain freely passes from the 1st to the 2nd star and from the 2nd to the third. The second way is to put the bike in place, switch to the middle sprocket and alternately put the 2nd and the penultimate sprocket in the back. The chain must not be rubbed in THESE positions. The extreme method is not accurate, requires testing on the move and is not fair for cheap derailleurs.

Front bulkhead replacement technology

If the front derailleur is not correctly positioned on the bike frame, you will NOT be able to adjust it. Since a conversation is brewing in the installation methodology, it is appropriate to discuss the essence of dismantling activities.

Prospective questions. Diagnostics of the current state

Accuracy by throwing the chain depends not only on the set adjustments. The role is also played by the position of the transfer of views and the deviation of the frame geometry from the nominal shape. It also happens that the cable simply broke and the switch does not work corny. That is why we placed the diagnostic stage before the description of the complete regulation procedure.

How to set up a Shimano front derailleur on a mountain bike

Statistics claim that the front “shifter” requires less maintenance than the rear one. Simplicity of design is also on the “front” side. Why, then, there are a lot of questions when installing and adjusting this unit. What is the capriciousness of the forward transfer? And in the end, how to do the work so that the result does not cause discontent and criticism.

Why do not front gears switch when changing from 1st to 2nd or from 2nd to 3rd

The reason the chain does NOT bounce onto the large front sprockets without additional tension is because the cable is stretched. In this situation, there is no need to configure from scratch. It is enough to twist the lamb Shifter and everything will fall into place.

Unscrew the thumbs 1 turn and try to shift in place by lifting the rear wheel and pedaling. If the chain still does not move freely to large sprockets, then spin the drum half a turn and try using the re-linking in place again. Repeat ½ turn. check series until shifts in both directions are NOT accurate.

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Having achieved a clear transfer in place, drive and test the operation of the front block of speeds. Under load, the setting may not seem so ideal, so you have to twist the drum in one direction or another within ½ a turn and immediately check the new position while driving.

Possible errors when setting the rear derailleur

Question: What if I unscrewed the adjusting screw to the end, and the chain still does not switch to 1 speed lower?
Answer: Most likely you pulled the cable poorly by hand from step 4, or you did it with Insufficiently tightened cable tension adjusting screws from step 3, and it is also possible that you did not tighten the cable at the highest speed on the shifter Described in step 1.

Question: I reached stage 7, but the chain was not in the smallest star why?
Answer: You may have pulled the cable too tight with your hands in step 4, in which case try to loosen the cable tension slightly with the adjusting screw. If the chain still does not go to the extreme small star, repeat steps 1 to 4.

Bicycle Rear Derailleur Setting

A very common problem faced by cyclists is the fuzzy rear derailleur. Today we will try to figure out how to set it up from scratch or adjust it if the settings are lost.

This article is suitable for setting up all shimano, sram, campagnolo, microshift switches and the second, not depending on how many speeds you have on your bike, starting from 2 and ending with 11 speed blocks of stars on the rear wheel.

Bicycle Rear Derailleur Adjustment

After we have eliminated all 5 possible problems with the rear derailleur, we can proceed to configure it. I took a bike with a shimano rear derailleur and divided the whole setup into 8 steps:

1. On the shifter, fold to the highest speed (which corresponds to the smallest star on the block of led stars). Steep the pedals so that the chain is on the small star. (Now you understand why it is so convenient to work with the rack)

I do NOT show numbers on the shifter, but believe me the position of the indicator is on the “number” 9 Which corresponds to the smallest star on the cassette.

2. Loosens the hex or bolt holding the cable.

3. We twist it all the way, and then return one turn back all the adjusting thumbs of the cable tension, which are located on the switch and on the shifter (sometimes there is only one adjustment screw on bicycles, most often it is on the switch, less often on the shifter).

In my case, the cable tension regulator is located only on the shifter. The photo shows how I spin the lamb.

4. We pull the cable by hand (it is not necessary to pull with all our strength, the main thing is that it does not sag and be stretched along its entire length) and tighten the bolt holding the cable.

5. Align the center of the derailleur roller with the center of the smallest chainring on the bike. Some people remove the chain for stages 5 and 6 to fine tune them. I do not see the need for this, you can not shoot, especially if you have a switch of more than one top level, such as shimano tourney, acera or alivio.

Tighten screw “H” with a screwdriver until the centers of the rollers on the tabs of the derailleur and the small star DO NOT coincide and proceed to the next step.

In the photo, I showed a red line, along which you can see that the switch roller is under a small star on the cassette, which means that the extreme position is set correctly.

6. Shift the shifter to the lowest speed (number 1), which corresponds to the largest driven star. Steep the pedals so that the chain goes to the extreme sprocket. And also align the center of the foot rollers with the center of the largest sprocket. All this alignment takes place with the screw “L”.

On the shifter, the indicator for switching the speed to number 1, if the numbers are in the most extreme position, which should correspond to the largest star on the cassette.

7. We drop again at the highest speed. Don’t forget pedaling # 128578; The chain should be on the smallest star. Next, switch to one speed and steep pedals, if the chain DOES NOT jump or does NOT jump right away, then you need to unscrew the adjusting screw a little, which adjusts the tension of the cable (it turns out we are pulling the cable).

Then again we check and switch from the highest speed one step lower (if an 8-speed cassette, then from 8 to 7 speed), if the switch happened immediately, congratulations you set the switch! You can check the remaining speeds will also easily and clearly switch both up and down.!

The chain should jump to the adjacent speed. In my case, this is a 9 speed cassette. Switching from 9 to 8.

8. Adjust the distance from the largest star to the derailleur roller. This distance should be about 4 mm, if the distance is greater, the switching clarity will be reduced. The adjustment screw on the switch is responsible for adjusting this gap. By unscrewing the screw, the distance decreases, screwing it in increases. The tuning is done on the largest star corresponding to the number 1 in your shifter.

Reasons for the deterioration of the rear derailleur:

1. Lack of maintenance. Most often, when buying a bicycle, the derailleur works well and flawlessly, but after the season of operation, you can replace the deterioration in performance or even the chain jumping off the extreme sprockets. In 70% of cases, setting the rear derailleur helps, but sometimes this does not help either, then the cable and shirt should be replaced, as they become clogged with dirt and interfere with the smooth running of the cable in the shirt. Usually bike maintenance is done once a year, in which the switch settings are enabled.

2. Wear of the switch itself. Everything ever breaks down and the bike derailleur is no exception. Most often, the parallelogram axes of the switch wear out, due to which a small backlash is formed, which does not allow the switching to be set correctly.

3. Worn derailleur sprockets. Over time, plastic sprockets wear out due to which the chain no longer holds on to them, which leads to poor operation of the derailleur. Also, the sprocket wasps can wear out and the sprocket will dangle unnecessarily on the axle, which leads to poor shifting.

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4. Curve cock or the switch itself. When you fall or hit something with a switch, the cock is most likely to bend (break), since it is made specially from a weaker alloy than the switch itself (to keep the more expensive spare part intact). The curvature does not allow the chains to rise straight, which reduces the efforts to adjust the transfer to zero. Read how to straighten a cock with your hands.

5. Problems with the cable. Sometimes, during installation or when dropped, the cable may bend strongly, after which the place of the bend will prevent the smooth movement of the cable in the shirt. In this case, its replacement is required.

It also happens that the cable gets loose (that’s why you should use the ends of the cables) and later one of the thin threads begins to separate from the main bundle, as a result, prevents the normal movement of the cable in the shirt. Sometimes one thread in the cable can break and also prevent it from working normally, here you can isolate it from the main bundle along the entire length of the cable. But the best option would be to replace the cable with a new one.

If a new cable was installed, sometimes after a certain number of kilometers (about 100 km.) You may notice a deterioration in shifting. this is due to the cable stretching a little. In this case, you will need to tighten the cable tension bolt a little.

Tools:

The tools you may need are a Phillips screwdriver and possibly a 10 or 8 hex key or wrench depending on the switch. It is also very convenient to work on a special bike rack, but you can do it without it too.

By setting the rear derailleur:

Share your experience with setting switches in the comments.

How to set up a Shimano front derailleur on a mountain bike

Statistics claim that the front “shifter” requires less maintenance than the rear one. Simplicity of design is also on the “front” side. Why, then, there are a lot of questions when installing and adjusting this unit. What is the capriciousness of the forward transfer? And in the end, how to do the work so that the result does not cause discontent and criticism.

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 shirt (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 for transfer;
  • 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, it is not necessary to spare the consumable;
  • The cable will pass through the shirts;
  • On the frame there are special grooves in which shirts are tucked;
  • At the front, fasten the cable with a screw.

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 rear derailleur frame is crooked, then this can only mean one thing. the cock is bent. If this is not critical, then you can correct the rooster with your hands. you need to take the rear switch in your hand, which is fixed on the rooster, 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, which needs to be changed on time, and not constantly repaired / pulled.

In some cases, the bike owner Pays attention to the deformed rear derailleur (the front derailleur is extremely rarely damaged by impact). it can also be returned to its original position with the help of 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, do 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 traffic accident.!

Multi-speed bikes with one front sprocket. is it worth buying

The fashion for three stars ended with the arrival of 10, 11, 12-speed cassettes. The fact is that on 3×7-3×9 transmissions, three toothed gears in the front perform an important function. they overlap the Gear Ratios, allowing you to climb hills and screw on descents.

The number of teeth on the new multi-star cassettes has been matched to do the same with one sprocket in front. Therefore, it makes no sense to use two more asterisks. For the XC discipline, this is a Substantial Breakthrough, as the frontal throw is the most unreliable part of the bike here.

Shimano bike derailleur setting

How to remove

Disconnection is tenacious here. We have already studied this procedure in detail in the material on how to change the chain on a bicycle with shifting gears. If there is no lock, then squeeze will be required. But in the future, we advise you NOT to give up such a convenient thing as a chain lock.

It is advisable to wash the removed chain. It is important to choose the means, which we have mentioned more than once in the corresponding publication. Although the result of research on technology, how and how to clean a bicycle chain at home. Impressed. We came to the conclusion that it is most convenient to do this with a high-pressure jet, and right on the bike.

  • Disconnect the cable from it.
  • Disconnect the frame clamp.

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 movement against the wind, ascents, poor road quality. The transmission unit must deal with all these problems. Ride quality and cyclist safety depend on the smooth operation of the speed switch. This skill is very useful, and every VELOBIKE 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, read the instructions, or using the advice of experienced bike owners.

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Before setting the derailleur, the rear derailleur must be adjusted. It will greatly facilitate the whole process of adjusting the alignment of the bike in the correct position (wheels up). 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 rope with elements of damage. Such a part requires replacement;
  • Rooster damage.

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

If all parts are in good working order, adjust the switch. What is the speed selector made 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 different-sized stars;
  • Front fixing mount;
  • Rear derailleur, whose main function is to transfer the chain to the desired sprockets.

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 speed selector adjustment. 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 contamination 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 the chain setup. 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 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 out the link 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. The multi-speed bikes that have gained popularity in recent years have two sets of views 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 speeds on it while driving, otherwise there is a danger of damaging the bike.
  • During gear shifting, you should not apply significant dynamic efforts, in order to eliminate the danger of a burst of flowers, it is advisable to change gears consistently, and not making sharp jerks.

Bicycle front derailleur

The transition to the setting of this mechanism is possible only when the rear derailleur is set. This feature is important to take into account before starting work. Figure 2 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, reactivate adjuster L. To adjust stop H, the chain moves to the largest sprocket at the front and smallest at the rear. The adjuster will help to 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.

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:

  • Rooster deformation;
  • Stretching the rope;
  • Deformation of the speed switch;
  • Incorrectly working return spring.