FAQ: How Much Slack Should A Bicycle Chain Have?

How much tension should be on a bicycle 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.

What happens if your bike chain is too loose?

The problem with a bike chain that is too long or is loose will cause the chain to slip off. And this will affect changing the gears cause the dérailleur does not have enough capacity to pick up the slack with the chain being too long.

How tight should a chain be on a fixed gear bike?

The chain tension on a fixed gear is quite critical, and is regulated by moving the rear axle back and forth in the forkends. If the chain is too tight, the drivetrain will bind, perhaps only at one angle of the pedals (chainwheels are not usually perfectly concentric). It should be tight as it can be without binding.

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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.

How do you tighten the chain on a road bike?

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.

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.

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.

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Why does my chain slip under pressure?

As a chain stretches it wears the leading edge off of the cogs and chain ring teeth. Mixing a new chain with old cogs is a problem because the new chain usually doesn’t mesh with the worn gears and skipping results. All of these problems can cause a chain to skip while under pressure.

Do I need chain tugs?

They are needed because your chain will naturally stretch over time, causing slack to form which delays power pickup when you turn the pedal and will result in your drivetrain wearing faster.

What chain should I use for single speed?

If you have a single-speed bike or one with internal gears, the chain type will be 1/8″ in internal width. In this category you will find cruiser bikes, urban bikes, fixies or models with internal gears, among others. If you have a bike with a derailleur, with 2 to 11 sprockets, you will need chains of 3/32″.

Do I need a chain tensioner for a single speed?

Chain tensioner – For fixies or conversion to single speed Fixie frames with horizontal dropout often require a chain tensioner to fix the rear wheel in a fixed position and to screw the axle securely and firmly to the frame. In a Fixie or Fixed Gear Bike this single gear is fixed.

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