Why does my BMX bike chain keep falling off?

What does it mean if your bike chain keeps falling off?

It might be that the chain is worn, has a stiff or bent link, or has become clogged up with dirt. A visual inspection while turning the cranks should reveal if there’s a problem here. The chainring, or a chainring tooth, could be bent.

How much tension should a BMX chain have?

The chains of a BMX should be tight enough but not too tight or too loose. It should not sag too much to touch the chainstay. It should be tight enough to allow movement of about one inch up and down. It should not be too tight, or the cranks will get harder to turn.

Can you tighten a BMX chain?

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It’s always a huge pain when you go to tighten your wheel, then the chain ends up with a bunch of slack, so doing it the right way will help prevent that from happening. This trick applies to BMX bikes without chain tensioners.

Should BMX chain be loose?

What is this? A BMX chain should be just the right size. It should not be too loose that it touches the chainstay; neither should it be so tight that the cranks become harder to turn.

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Why does my BMX chain keeps snapping?

Wear. Chains break for a host of reasons, but most common is wear. … Because the chain is stretched, the metal fatigues is more susceptible to failure. Additionally, as the chain wears the chainrings and cassette (gears in the rear) will wear out as well.

What causes tight spots in BMX chain?

Un-even chain tension is usually down to one of 3 things. Your front sprocket isn’t quite central. Your rear sprocket isn’t quite central. Your chain is stretched unevenly.

Why does my bike chain fall off when I pedal backwards?

If it has a derailleur your gears need adjusting. We properly adjusted shifting system will allow you to pedal backwards without the chain coming off. Something could be bent, like the derailleur hanger or the derailleur itself. If it’s a singlespeed, this means the chain is out of alignment with the two sprockets.