How to replace the chain on a bicycle with speeds. video instruction
How to replace the chain on a bicycle with speeds. video instruction
Any vehicle needs maintenance. Bicycles are not exempt. Their key element in the transmission unit is the chain. High-speed bicycles have a lot of finickyness to function properly. The frequency of chain replacement or maintenance is largely determined by the riding style. For example, trial cycling enthusiasts do this while riding. When and how to change the chain on a speed bike?
What you need to know about the types of bicycle chains?
Bicycle chains come in two types: lock and solid. Disconnecting the lock variation is not difficult. It is convenient to do this with a regular thread (wire), threading it into adjacent links (before and in front of the lock) and tightening the loop. The main thing is to avoid damage to the lock and not lose it.
Opening a continuous chain is possible only with a special squeeze, although the procedure itself also cannot be classified as complex tasks:
- It will be necessary to install the chain in the position of pressing out-pressing in the axle.
- Tightening the screw to pull out the pin.
Axial pressing is inherent in the opposite sequence: connecting the links and pressing the pin by means of a screw.
For your information. The use of the squeeze is accompanied by loosening of the axle, therefore, the repetition of the release is the lot of another link.
What tools are important to have to replace the chain:
- The key used to remove the rear wheel.
- Pliers to hold segments and pins.
- Squeeze. As noted above, this device is used to press out and press in the pins.
Chain Removal Procedure in Standard Variation. Step-by-Step Instructions
Cyclists who do not have sufficient experience in such matters are advised to memorize the general scheme, which reflects the location of the chain on the system, cassette, switches. Then the procedure for its subsequent installation will not cause difficulties.
As soon as all the nuances are fixed in memory (or on paper), you can proceed to further steps:
- Cleaning links from dirt accumulations. If this is not done, dirt will be a significant obstacle to the next steps.
- Removing the rear wheel. The absence of this detail simplifies all actions, although experienced craftsmen safely skip this stage. In fact, it does not apply to mandatory measures.
- Extruding the pin present in all links (the metal cylinder that closes the link). This is where the squeeze is applied.
- Disconnecting one link.
- Removing the extreme links from the switch system.
This completes the removal of the chain (worn out or requiring cleaning). The procedure itself is quite easy if you have a tool and basic knowledge. Accuracy of execution and the absence of forceful actions during the pressing process are very important.
Step-by-step process for installing a bicycle chain in the form of instructions
With bicycles that have one gear (singlespeeds), everything is limited to a chain canopy on a star-shaped part and a latching snap-in or pressing in a pin. The design of high-speed bikes suggests some difficulties in this issue.
They can be designated by the following points:
- Locking derailleurs on small transmission sprockets.
- Next, a chain is put on the teeth of the stars. In this case, it is important to take into account the location of the rollers involved in its tension.
- Then the chain links are aligned.
- The chain is clamped and the axle is pressed in or the lock is closed.
At the final stage, the move is checked. For this purpose, the pedals are rotated. Incorrect installation is characterized by sagging of the installed element and difficult twisting. If this is not observed, the installation of the chain is done according to all the rules.
In what cases, in addition to wear, the chain is removed:
- For deep cleaning when it is necessary to remove lubricant and accumulated abrasive.
- To replace damaged links.
A failed chain stretches, its links shift, harming the sprockets, which negatively affects the switches. It is quite difficult to visually determine the degree of wear.
Therefore, they use a simple measurement, that is, you need to measure twenty-four links, or rather their total length:
- With a value of 30.5 cm, we can talk about the normal state of the chain.
- An indicator of 30.65-30.75 cm indicates the need for replacement.
For your information. A wear value of 30.75 cm indicates a damaged sprocket set. If the length of the measured links reaches 30.8 cm, then the transmission is damaged.
By the way, cutting the stretched chain does not solve the problem. Stretching is characterized by an even distribution. In this case, damage to the stars cannot be avoided. As you know, “star” parts cannot be repaired. It is cheaper to change the chain than to replace more expensive components.
A video plot will tell you how to replace a chain on a bicycle
Effective and efficient gear shifting techniques
Okay, here’s the most important thing to remember when riding any bike: THERE IS NO PERFECT GEAR! SHIFT!
Very often we see people putting too much energy into their pedals when they climb a steep hill in a large chain ring, or swing their legs when they are spinning in a gear that is too easy for the descent they are riding. driving time. keep your cadence as constant as possible (the speed at which your pedals make a full revolution)! This requires one of two things: shifting gears or increasing power output. The problem with power output is that unless you’re Wonder Woman, you have a limited supply of power. We recommend changing gears frequently to improve efficiency while riding.
Liv’s Tip: Start shifting to lighter gears with your right hand early to maintain a steady rhythm. Remember, your right hand is for small terrain changes. If you find that your pedaling speed is slowing down dramatically, you may need to use the front derailleur (left hand) to make it easier to shift gears during the big uphill in front. But if you’re already uphill and putting out a lot of power to the pedals, you might notice that your front derailleur doesn’t want to work! You will move, you will hear a grinding noise, but nothing will happen, and you will most likely stop in the middle of a hill.
Instead of chafing these gears, you will need to apply a little more power to the pedal travel right before shifting, then reduce the pedal travel when shifting. With less pressure on your chain, it will be easier for your derailleur to remove your chain from the larger ring to the smaller one.!
How to switch: the basics
So now that you have a basic understanding of what these gears are called, how do you shift? Depending on the type of bike, your shifters may be slightly different; on road bikes (or any bike with a folding handlebar), your derailleurs. these are the same levers you use to apply the brakes. To operate the switches, push the lever to the side until you hear a click. For most flat handlebar mountain and hybrid bikes, you shift gears with paddles that you control with your thumb. Some bicycles are equipped with “grip switches” or a disc that is located inside where you place your hands. In these systems, you change gears by turning the disc forward and backward.
Your shifters are connected to a cable enclosed in a protective cover. When you click on the gears, the cable tightens and looses by applying more or less force to the derailleur, which moves your chain up and down the cassette or chain rings. Below we explain what each lever does:
Left hand: Controls forward gears / front derailleur. moving the chain up and down the chain rings. These levers cause large jumps, gears when changing terrain.
Right hand: Controls reverse gears / rear derailleur. moving the chain up and down the cassette. These levers are designed for small adjustments, transmission and use in small terrain changes.
Large lever: The larger of the two gear levers moves the chain to the large rings. So big = big. Switching to large rings with your RIGHT hand will make pedaling EASIER. Shifting into higher gears with the LEFT hand will make it HEAVY.
How To Put On Bike Chains
Small lever: The smaller of the two gear levers moves the chain to smaller rings. So small = small. Shifting down to smaller rings with the RIGHT hand will make the pedal press HARD. LEFT-handed downshifting makes pedaling EASIER.
No big / small leverage? You may have a SRAM road drivetrain that uses a “double-push” system. This means that there is a smaller lever hidden behind the larger brake lever and you can only move it in one direction. A long press (with two clicks) will move the chain to a simpler gear at the rear (right) and a larger, stiffer gear at the front (left) A short press (with one click) will move the chain to a stiffer, smaller gear at the back (right) and a smaller, lighter gear at the front (left hand).
You may also have a handle shift. This means you have a dial that you turn back and forth to change gears. Turning the dial forward will shift the chain to a smaller and lighter gear in the back (right hand) and a smaller and lighter gear in the front (left hand). Turning the disc back will move the chain to a larger and lighter gear in the back (right hand) and a larger and lighter gear. harder front gear (left hand).
What does all of this mean ?!
Terminology. one of the hardest things to learn to switch. Low / High, Large / Small, Light / Hard, Fast / Slow, Front / Rear, One by One, Twice, Three for if your head is already spinning, you can brush up on the following dictionary words:
Low gear = Easy = Good for climbing: Low gear on your bike. it is the smallest chain ring in the front and the largest gear on your cassette (reverse gears). This is the easiest position to pedal and you will be able to pedal uphill with minimal resistance. Getting into this position is called “downshifting”.
High gear = Stiff = Good for downhill: The “top” gear on your bike. it is the largest chain ring at the front and the smallest gear on your cassette (reverse gears). This position will be the hardest to pedal and you will be able to accelerate when going downhill. To get into this position, it is called “upshifting”.
_- Speed Bike: When you were a kid, you probably bragged to your friends about the number of “speeds” on your bike. Whether it’s 7, 18, 21-speed, etc., that’s what you had in mind. this is the number of gears on your bike. You can determine this number by multiplying the number of teeth in your cassette (rear gears) by the number of chain links (front gears) on your bike. For example, if your bike has two chain rings and 11 teeth in the cassette, then you have a 21-speed bike. However, in today’s bicycle industry, expensive adult bikes are rarely referred to this way because, in fact, bigger doesn’t always mean better. on this below.!
One, Two, Three-Po: The number of chain links (front gears) on your bike determines whether your drivetrain (gear system) will be referred to as one-on-two, two-on, or three-deck. the bicycle industry. strive to produce the same gear range with fewer chain rings. The result is a larger cassette (rear gears) that has more teeth and often more teeth on the largest gear train in the cassette. What for? Because, as a rule, fewer chain rings make the bike more efficient, lighter, and easier to operate and adjust. For this reason, you will often see single drivetrains on high-end mountain bikes and dual drivetrains on high-end road bikes.
Cross chaining. a term that refers to being in one of the following gear combinations:
BIG / BIG: Largest cassette tooth (lightest gear) and largest star ring (hardest gear))
SMALL / SMALL: Smallest tooth in the cassette (hardest gear) and smallest chain link (lightest gear)
In these positions, the chain stretches at an angle that can damage the transmission over time, and may also cause the chain to slip or cause the front derailleur to make noise and malfunction.
What to do if the chain is loose on a mountain bike?
If you encounter the problem of chain sagging on a mountain bike or any other that has several gears, then in such a situation it is changed. The fact is that in such bicycles, the machine is responsible for the chain tension. With the help of a spring, it constantly and automatically corrects the tension in the chain mechanism.
To save money, some craftsmen “cut” the chain, that is, cut it and reduce the number of links. In this case, the links are connected with a special lock. Of course, this option is also possible, but it is important to understand that a stretched chain is a worn out mechanism and it will not last long.
When buying new chains, it is important to know that they are different and may not fit your faithful two-wheeled friend. First of all, you need to make sure what chain pitch is used on your bike model. And you also need to decide on its length, which is usually measured in the number of links.
How to chain a child’s bike
Children’s bicycles are designed in the same way as regular bikes (not speed bikes). Therefore, in order to tighten the chain on children’s bicycles, you need:
- turn it over, fix it so that a fall does not occur;
- remove the chain protection from the bike (for this you need to use a wrench or a screwdriver);
- loosen the nuts that secure the rear wheel;
- move the wheel back a little (this can tighten the chain drive to the desired level, the main thing is not to overtighten, so that the child can pedal without effort);
- you need to fasten the wheel to the frame with nuts;
- you can go!
How to tighten a chain on a bike at speeds
In relation to high-speed vehicles, there are two more ways to adjust the tension of the bicycle chain correctly.
Method one for pulling up the chain on a sports bike:
- remove the links from the gears;
- carefully knock down the stopper on the speed switch;
- turn the switch towards the spring tension. Thanks to this action, the part is automatically tensioned to the desired level.
Method two. just pull up the switch cables (in some situations, this method may come in handy).
These methods will perfectly cope with the problem of chain stretching.
Then and today.
The first bicycles were equipped with just one sprocket on the rear wheel and one on the front crank arm. I think everyone is familiar with the situation, especially in childhood who often rode with friends, that if the chain is stretched, then it will constantly subside. And if the front sprocket is also covered with a protective casing, then putting on the chain is doubly problematic, and all this is accompanied by nervous irritation and dirty hands from grease. To adjust the chain on such a bike, it was necessary to spin the rear wheel and move it back a little, or remove one or two links. This was the tension of the bicycle chain due to special cuts on the rear fork.
Improper chain maintenance is the cause of an accident
In the event of a collapse or breakage of the bicycle chain, with the best outcome, the driver will get off with the fact that he will not be able to go further. But often with this there are more serious consequences. For example, if there is no special guard on the rear wheel, the chain can fall into the spokes, but here the outcome is unfavorable in all cases. Under any coincidence, the spokes of the rear wheel will be bent, and an eight will form on it, and the repair of such a breakdown will take a pretty penny. And there is also a danger that the driver will injure himself or pedestrians, as his rear wheel will jam.
The next danger in the event of chain breakage or loosening applies to those bicycles that do not have a handbrake. Since here the entire braking system is located in the rear wheel carriage, therefore, the driver will no longer be able to brake in the usual way. It’s even scary to imagine if this happens at high speed.
How to put a chain on a sports bike
How can you shorten the chain?
Normal speedless bike chains are collapsible. One of the links has a special lock. Opening it will allow you to remove unnecessary links or add new ones.
Installing a Bike Chain
Important! Before proceeding with the removal of excess links of a solid-riveted chain on a high-speed bike, a special squeeze is purchased.
With its help, you can gently rivet the clamps, leave the required number of them, and then re-rivet.
There is another solution: in the absence of a tool, pins on the links are ground using sandpaper. After that they are removed.