FAQ: Why Does My Bicycle Chain Loosen And Tighten While Pedaling?

Why is my bicycle chain tight and loose?

Re: tight then loose Chain Could be: bent crank, over stretched chain, misaligned chain, off center chainwheel, tweaked rear hub, bad freewheel. Most likely is an off center chainwheel: Remove the chain and check how far the chainwheel moves front to back, like you are truing a wheel with a hop in it.

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 bike chain keep loosening up?

A motorcycle chain that keeps getting loose is usually caused by the rear axle or chain tensioning bolts not being tight enough. It can also be cause by a new chain not being worn in enough, worn down sprocket teeth, having too tight of a tension, or having the wrong size of chain installed.

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Why does my BMX chain keep coming loose?

You will be stressing your rear triangle and putting load on it that can cause a loose or super tight chain. I usually pull my wheel back and then making sure the wheel is kicked a little to the non drive side.

How loose should BMX chain be?

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. Inspect your chain and other BMX parts regularly to prevent accidents and unnecessary maintenance costs.

Can wd40 be used on bike chains?

WD-40 Specialist® Bike Chain Lube is an all-conditions lubricant that protects bicycle chains in dry, wet, or varying conditions. The fast and easy-to-use aerosol spray helps prevent squeaks and extends the life of the chain.

How do I know if my bike chain is 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.

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.

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How do you adjust the tension on a bike chain?

To change the tension loosen one of the axle-nuts and move the wheel forward or backward slightly and snug it up again. Then, loosen the opposite axle-nut, adjust and tighten, making sure the wheel remains centered in the frame. Re-check tension. A chain tensioner can make the process easier.

What happens if motorbike chain is loose?

Too tight, and the tension will restrict your power and force, effectively hindering your motion (and safety). Too loose, though, and you risk a chain jumping off a sprocket; a slapping chain has the potential to damage moto-parts (and rider-parts).

How do you fix a loose chain?

A Bike Repair Tool Kit is ideal and highly recommended.

  1. Step 1: Put your bike in the correct position.
  2. Step 2: Loosen the rear axle.
  3. Step 3: Pull back on the rear tire.
  4. Step 4: Make sure that you have the right chain tension.
  5. Step 5: Tighten the rear tire back into place.
  6. Step 6: Test the chain and the tire.

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