With active riding, the bike gradually wears out. To avoid this, you must constantly look after him. In high-speed bikes, one of the most vulnerable spots is the rear of the transmission. Therefore, sometimes it requires replacement. How to remove sprockets from the rear wheel of a bicycle?
Why is this needed?
The most common problem is chain wear. If it is not replaced on time, then it will begin to bore the stars. Everyone has their own favorite program, which is most often used. Over time, the chain on it will begin to scroll if a large load is applied. Therefore, we must learn to remove the stars from the rear wheel of a bicycle. As soon as such a skill is acquired, you can fix any breakdowns yourself. And this will save a lot of money on maintenance in the workshop.
Why is this necessary? You can remove the sprockets from the rear wheel of the bicycle for both conventional lubrication and their complete replacement. They will also interfere if it is necessary to replace the knitting needles on the right side or to get to the sleeve itself.
The difference between a rattle and a cartridge
Before you remove the stars from the rear wheel of a bicycle, you need to decide on their design. It is important to distinguish between a rattle and a cassette. Outwardly, although they are similar, they are very different inside.
In the ratchet, the freewheel is installed with the sprockets. This is such a monolithic system, which is simply screwed onto the sleeve. The cassette can be disassembled, so you can replace one worn star. Unlike the ratchet, it is not a monolith together with the freewheel, but is worn on it.
To remove them, you will need different pullers. It is important not to confuse them with each other, because they are not interchangeable. They have different slots. If you are still afraid not to distinguish a rattle from a cassette, the photo will be an excellent clue in this matter.
How to remove sprockets from the rear wheel of a bicycle?
If it is a rattle, then everything will be a little easier. If there is special equipment, then even a person who has nothing to do with bicycles can handle this.
To do this, you need only 2 tools:
- special puller;
- adjustable wrench.
For starters, of course, you need to remove the wheel. Then the stars are removed using two actions. It is necessary to insert the puller into the ratchet, and then try to turn it counterclockwise with the key.
If the mechanism has never been removed, then it can spin strongly (such is his property) and not succumb even under great efforts. Then you need to spray the miraculous spray WD-40 from the side of the thread. If you leave it like this for several hours, then the ratchet can easily be removed. It must also be remembered that the greater the lever, the greater the effort. Therefore, you need to take the largest adjustable spanner. Make a couple of jerks and the ratchet will loosen easily.
To remove the cassette, you will need another tool. It is called a whip. This is a handle to which a piece of a bicycle chain is attached. If you turn the cassette counterclockwise, it will begin to rotate. This whip will be useful here, which will hold it. Some craftsmen instead of this tool just use a piece of the old chain. Next is the same thing as when removing the ratchet.
How to remove sprockets from the rear wheel of a bicycle without a puller?
For such an operation, you do not need to purchase a special tool. True, it is much easier to deal with. In order to remove the ratchet without a puller, you will need:
The ratchet has 2 recesses. There you need to insert a punch and hit it with a hammer. You need to clockwise. Instead, you can use a large nail. One must be careful, as there are bearings under this place. With a little effort, you can unscrew the sprockets.
There still remained the inside of the rattle. It is removed using a gas key, which is twisted counterclockwise.