Why does my bike chain go slack?

Check your jockey wheels as well. if they are not turning freely or the chain has come off one then it will make the chain go slack when you stop pedalling. The most likely cause though is the freehub or freewheel being sticky as said.

Why is my bike chain slack?

The chain is simply too long.

All new chains (not already on bicycles) come longer than they need to be. If you recently replaced your chain, and didn’t remove the extra links, this would cause the chain to be loose.

Why is my bike chain suddenly 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.

Should my bike chain have slack?

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.

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What happens if your chain is too loose?

If the chain is too slack, it can skip over the tooth in the sprockets, This skipping over of teeth leads to uneven transmission of power from the engine to the wheel. As a result, the speed of the motorcycle will unevenly oscillate without any intervention from the rider.

What causes a dropped chain?

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. Again, a visual check will tell you what you need to know.

How do you tighten a derailleur chain?

Tighten the cable

Select the highest gear (smallest sprocket) on the shifter. Pull the cable as tight as possible at the derailleur and attach it to the body via the cable anchor. Once you’ve done this, select the third gear on the shifter and gently pedal forwards to shift the chain.

Is my bike chain too loose?

Check your chain out. It should be tight enough that it only allows you to move it up and down about one inch. If it is sagging or much looser than that, you need to tighten that chain up. Chains often loosen when a bike does not have a derailleur.

How much slack should be on a bike chain?

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.

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Is chain too tight?

Well, there are a few tell-tale signs that your chain tension isn’t set correctly, such as: A ‘wurring’ sound as you accelerate. Knocking between gear changes. The chain looking under strain when you sit on the bike.