Shimano acera bike speed setting

SHIMANO Attachment Classification

A bicycle, like any other thing, is made up of components. The transmission, braking system is screwed onto the frame, which is the skeleton of the bike, wheels and suspension are installed.

Bicycle attachments include any part of the bicycle that is attached to the frame:

Shimano Acera 8-Speed Rear Derailleur Review

For ease of perception, any manufacturer divides all the equipment it produces into classes that differ in purpose, quality and price.

So, for a lover of a quiet ride or a beginner cyclist, there is no point in buying a body kit of a high category, all your trips will be successful with intermediate equipment.

How To: Adjust Shimano Rear Derailleurs

If you are on a tight budget, then the best option would be to buy a bike with the initial body kit, but without saving on the frame. On a good frame, you can easily install improved equipment in the future.

The attachment is different for each type of bike. Shimano identifies several areas:

  • mountain bikes (MTB)
  • road (Road)
  • urban (Urban)
  • gravel, gravel bikes (Gravel / Adventure)
  • electric bicycles (eBike)

Each of the five areas has its own classes, from basic to professional level.

NEW! Shimano Gravel Bike Equipment

Shimano manufactures equipment specially designed for gravel bikes. Now the line is represented by three models of the same series:

  • GRX RX810
  • GRX RX600
  • GRX RX400

Gravel or gravel bikes are as versatile as possible and are designed for long, comfortable rides, equipped with disc brakes and wide enough tires. Due to their design, they are great for driving on roads, as well as on trails covered with mud or gravel.

Adaptability, versatility and durability make these bikes ideal for everyday commuting, light hiking or winter training.

SHIMANO Mountain Bike Equipment (MTB)

Shimano Altus is also entry level equipment. The safety margin is higher than that of the previous class and you can already afford trips to simple off-road.

Shimano Acera. so called lower middle class, this equipment gives you confidence on the country road or light off-road.

Shimano Alivio is a mid-range mountain bike equipment. You can be calm about your choice and not think about where you will ride. Slightly different from the more expensive older Deore model.

Shimano SLX is a top kit for the hobbyist. reliable with less component weight. The limit of expediency, an ordinary cyclist in his life does not meet conditions that require better equipment.

Shimano Deore XT. this equipment is used to assemble bicycles for participation in competitions. Reduced weight and dimensions, the most modern and technologically advanced materials.

Shimano XTR. if reliability is just not enough for you. The best equipment from Shimano. new materials, latest technologies. Minimum weight. Absolute reliability. Price matches.

Shimano Saint is very durable and reliable equipment for professionals. Withstands any extreme loads.

Shimano ZEE is the equipment for aggressive riding on mountain trails. ZEE gives you the confidence to tackle even the steepest descents.

SHIMANO Attachment Classification

Shimano Road Bike Body Kit

The Shimano Tourney is a basic set of equipment, so you shouldn’t place high hopes on the durability and efficiency of the system. Not recommended for purchase.

Shimano Claris. entry-level equipment, usually found on inexpensive road bikes.

Shimano Sora is a set of equipment that can keep your bike working perfectly for a long time. Ideal for the first bike in its class.

The Shimano Tiagra is a mountain-grade counterpart to Deore With such a body kit, you can already try to participate in competitions.

Shimano 105. maximum quality for a reasonable price. reliability, better materials, advanced design. “Golden mean” in road equipment.

Shimano Ultegra is a road body kit for experienced amateurs and professionals. Very tough and extremely lightweight.

Shimano Dura-Ace. High Performance Road Cycling Equipment.

SHIMANO e-bike equipment

Shimano Steps E5000 is an equipment for city bicycles, with it you can easily and conveniently get to work or arrange cycling within the city limits.

Shimano Steps E6100. equipment that provides a smooth, efficient and natural ride feel. no matter how or where you ride.

Shimano Steps E7000. equipment that is installed on mountain and touring bikes. E7000 allows more riders to easily climb mountain trails.

Shimano Steps E8000 is an electric MTB bike that allows you to go further with less energy and have more fun.

How to install

When securing 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 crossover has not yet been set relative to the stars.

shimano, acera, bike, speed, setting

Putting it right means fulfilling two requirements:

  • The frame must 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 throws are different. Therefore, when choosing a new one, consider the following points:

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

Forward-looking issues

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 that require constant changes in speed and gear ratio. This can also include driving against the wind, off-road conditions, 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 component that needs to be taken up periodically is the shifting 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.

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

Statistics say 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 setting up this unit. What is the capriciousness of the front crossover? And in the end, how to do the work so that the result does not cause discontent and criticism.

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Front bulkhead replacement technology

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

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 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 angle of rotation 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 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 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 to 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. With such a bike there is less hassle, 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 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.

Rear derailleur

The gear selector 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 cope 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. Each cyclist can make adjustments to the bike’s gear shifters on their own. 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 is the speed selector made of? The components of the speed switch are as follows:

  • The handle for shifting the speeds, 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 transfer the chain to the necessary sprockets.
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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 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 more (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 cross-over will not be able to get into the spokes of the front wheel.

Shimano acera bike speed setting

Similar search: bike derailleur, adjust derailleur, rear derailleur, shimano altus

Continuing a series of articles about a bicycle (about a bicycle), I want to talk about setting up the rear derailleur of a bicycle.
For example, consider the SHIMANO ALTEZ switch.

So, we need the following tools: a set of hexagons, pliers, a screwdriver (curly or simple).

Setting the rear derailleur should only be done after setting the front derailleur.

If you do not have an assistant or a special stand for the rear wheel, maybe something else that would allow you to freely rotate the pedals to change speeds, then just turn the bike “on the horns”.

Let’s understand the terms used. To do this, look at the figure below and read the signatures.

Grandmother for cable tension
2. Fastening the cable
3. the Tensioner
4. the Tensioner roller

We drive the chain to the smallest sprocket (I think it is not worth reminding that we perform the actions on the rear cassette).

We untwist the mount to loosen the cable.

We unscrew the grandmother, which regulates the tension of the cable, to the middle position. The point is that we can make fine adjustments in the future: pull or loosen the cable.

Let’s get started with the adjustment. At the moment, the rear derailleur is not being pulled by the cable, so the spring tends to move it towards the small sprocket. This stroke is limited by the adjusting screw H (from the word High, we are talking about high gear), so we will adjust it. By screwing in the screw, we move the switch closer to the wheel, unscrewing it. we allow the switch to move further away from the wheel. We are looking for a position in which the chain will be directed exactly to the sprocket. We crank the pedals, checking that the chain goes exactly along the sprocket, without bouncing on high teeth.

Now you need to put the cable back in place. We check that the cable does not get caught anywhere, so that the shirt does not fall out of the mount anywhere. This check is very important, give it due consideration. We hold (without much effort) the cable with pliers and tighten the mount. If the switch slightly moved towards the wheel, it’s okay (it’s better to make sure that the cable is not slack), because there is an adjusting grandmother. If necessary, we adjust the setting by the grandmother.

We switch to low gear, i.e. to the biggest star (I will say again that we do this on the back cassette).

The next task is to adjust the screw L (Low. low gear), find such a position of the switch in which the chain runs smoothly along the sprocket. I advise you to move the derailleur as close to the next gear as possible, but so that the chain does not start jumping on high teeth.

Now let’s adjust the tension of the roller. The action is trivial on cheap switches (I took this one as an example), but theory is theory, and the application of the smallest aspects of theory in practice is the key to a high-quality switch setting
So, switch back to the largest star, in front to the smallest; we put the bike on wheels (if it was “on horns”). In this position, the tensioner roller is as close as possible to the cassette and can touch it on bumps or when pedaling backwards. We do not have bumps, shaking the chain with your hands while rotating the pedals. I do not advise you (you get dirty, injure your hands, and we turned the bike over), so we just pedal back. By adjusting the tensioner bolt, we ensure that the chain turns smoothly, and the roller does not touch the cassette.

I advise you to drive out and test the derailleur at different forward speeds. Do not forget about the grandmother, who can adjust the adjustment. Principle: by screwing in the grandmother, you release the switch further from the wheel; twisting. pulling closer to the wheel.
Also, do not forget that you should not expect particularly accurate and soft switching from cheap switch models.

This entry was posted on 08/20/2010 at 2:48 pm and is filed under Science and Technology. You can follow the discussion of this post using the RSS 2.0 feed. You can go to the end and leave a comment. Notifications are now disabled.

Shimano Deore LX / SLX

There is a double division here. Since 2009, Deore LX has been positioned as a travel equipment group. And the SLX is already aiming for racing.

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Deore LX. here Accent is made for reliability and durability at the expense of weight. The most ideal option for tourists, the price is too high, but the reliability is high.

SLX. here the Accent is made for racing. Less weight, better spring stiffness, consistent accuracy and speed.

These switches can no longer be classified as budget switches. They are clearly not needed for simple pokatushek. Those who understand what they are paying for, but are not ready (or cannot) spend money on top-end Shimano derailleurs should take a closer look at them. Depending on whether you are a cyclist or a racer, you need to choose the appropriate line.

In the road range corresponds to the Shimano 105 group.

Shimano Deore XT

Luxury equipment. Almost top, but not quite. New developments arrive here a little “late”. “Almost top” is everything. speed, accuracy, weight, reliability. price. And then it’s up to you.

In the road range corresponds to the Shimano Ultegra group.

Combined mechanism

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

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.

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.

The rear derailleur consists of the following elements.

  • Switch frame. The number of bike speeds depends on its length.
  • Two rollers that are responsible for the direction of the chain: the guide and the 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 necessary 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 handlebars, 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.
  • Loosen the screw holding the cable. This is done in order to unlock the switch.
  • Prepare a screwdriver and find the screw with the Latin letter H.
  • Move the switch so that the sprockets on which the chain lies (one star. on the cassette, two stars. on the switch) are in the same plane, that is, they form one line.
  • Take the cable with your hand. It must be pulled out as much as possible and fixed by tightening the screw.
  • Check if the switch is working properly. If it does not move well to large stars, turn the thumbs counterclockwise, pulling the cable.
  • Now move the chain to the smallest star using the shifters.
  • Find the screw with the Latin letter L.
  • Change the position of the derailleur so that the largest sprocket in the cassette lies in the same plane with the derailleur foot, forming a straight line with it.

Shimano Acera

In my opinion, this is the first line of switches that can be used in Naturally not long-lasting and not complex, but these switches will already pull the PST on the plain.

Pros: very average level, perfect balance between price, quality and accuracy.

Cons: the chain still hits the feather, although it practically does not jump on the stars from the shaking.

In the road range corresponds to the Shimano Claris group.

How to adjust cable tension?

The technological process is simple. it is enough to debug the transition between two neighboring stars, the index gear change system is designed so that the shift will be adjusted on all the stars of the cassette:

  • pull the cable by hand and fix it with the fastening bolt;
  • the final adjustment is carried out by rotating the hollow screw with a drum (position 2 in the figure), the chain should easily move from one star to another and back with one press of the shifter.

When you finish adjusting the Shimano rear derailleur on a mountain bike, tighten and secure the cable securely. It is important that it fits into the guide groove. If the work is done correctly, then when the pedals are rotated, the chain works silently and does not jump to the side.

Shimano Saint

Extreme switch level, designed for the highest loads that can occur when jumping and shaking, both on the slopes and on the ramp. This derailleur is a top-tier derailleur comparable to the Shimano XTR, but designed for gravity applications. Well, the price is appropriate.

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, align the position of the rooster 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.