Readers ask: How Much Slack In Bicycle Chain?

How much slack should a bicycle chain have?

Chain Tension There should be approximately one half inch of movement in the chain up and down at a point half way between the front and rear sprockets. To change the tension loosen one of the axle-nuts and move the wheel forward or backward slightly and snug it up again.

What happens if bicycle chain is tight?

On a single gear bicycle, you will need to tighten the chain properly. A chain that is too loose may jump off the sprocket when hitting a bump, A chain that is too tight will cause friction, extra wear and excessive force on the components.

Is my chain too slack?

Here’s How: Do a simple check on your bike by shifting the chain to the big chainring and the biggest cassette cog; then, push on the end of the derailleur cage (pushing forward) to see how much it will move forward. If it moves just a little, then you’re good. If it moves a lot, then you’ve got too much chain.

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Why does my bike chain slip when I pedal hard?

Most of the time, a skipping chain is caused by cable stretch. In the first half dozen rides on a new bike your shift cables stretch the most. They can also stretch over time as you ride. Hippley explains, “It takes cable tension to open a derailleur, which shifts your chain between gears.

Why does my chain go slack when I stop pedaling?

If your chain is getting slack on top when you stop pedalling or backpedal, then the problem is in your freehub (or freewheel, whichever you have), a dirty freehub will cause all the problems you’ve listed, even on a brand new bike.

Why is my chain so loose?

Your chain might simply be too old or can stretch over time. When this occurs you need to replace it. Consider that your loose chain also may be due to operator error. Exceeding the recommended gear range for the rear derailleur on your bike may lead to a droopy chain when you ride in these gears.

How tight should my fixie chain be?

It should be tight as it can be without binding. If the chain is too loose, it can fall off, which is quite dangerous on a fixed gear. Set the rear axle so that the chain pulls taut at the tightest part of the cranks’ rotation. One at a time, loosen up each of the stack bolts, and tighten it back just finger tight.

Why is my bike chain so loose?

Chains often loosen when a bike does not have a derailleur. Derailleur is the gear changing mechanism towards the back of the bike. The derailleur helps to pull the chain and keep it tight. Bikes without a derailleur are single-speed bikes or fixies.

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When should I tension my bike chain?

The chain should be tight enough that it only allows you to move it up and down about half an inch. If there is no slack in the chain then it is too tight. And if there is too much slack then you need to tighten that chain.

Is MTB chain too short?

If the chain is too short, this shift is difficult to make and the derailleur cage is stretched out and almost parallel to the chainstay. If the chain is really short, then you might not even be able to shift into the largest cog. Before you remove the chain, make sure it’s on the small chainring and smallest cog.

Should I shorten my bike chain?

You either deliberately run the chain long enough to handle your mistakes in shifting (for big/big) or you don’t. You should have better shifting theoretically with a shorter chain, but if you shift big/big by accident you do have a problem.

How do I know if my chain is too loose?

75% of its original length. If you put the tool up against the chain and it doesn’t reach the 0.5 mark, then your chain has not elongated and is fine. If you find that it is 0.5, you need to replace the chain if you have 11 or more rear gears. If it is 0.75, you need to replace it if you have 10 or fewer rear gears.

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