On average, however, most street motorcycles will need a chain tension of about 20 – 30 mm, or about a half inch to an inch in slack. This means that the chain should be able to move about a half inch to an inch up and about a half inch to an inch down. It's easiest to measure this using a measuring tape.

How tight should the chain be on a?

The rule of the thumb says that the exact tightness of a chain will only let you move for about half an inch. Now, if the chain is too loose, then you need to tighten it. If you cannot even move the chain, then it is too tight, and it needs to be loosened.

Are bike chains supposed to be tight?

So, how tight should a bike chain be? As discussed, a bike chain shouldn't be too tight or too loose. Instead, its tension should be about 0.5 inches. That's the only chain tension that can guarantee the best performance from your bike chain.

What happens if bike chain is tight?

Finally, if your bike chain is too tight it can cause damage to your components like the sprockets on your bike. This can also reduce the life expectancy of the sprockets and the dérailleur. You can test the chain is tight enough by ensuring you can only move it about half an inch in either direction.

How tight should my chain be on a single speed?

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.

30 related questions found

How do I know if my chain is too loose?

To find out whether your chain is too long take a look at it from the side with your eyes being level with the chain. A loose chain will sag close to or below the chainstays as the chain hangs between the rear cogs and chainring. The chain might skip as you pedal, or even drop off the gears.

How tight should a chain be on a chain saw?

A properly-tensioned chainsaw chain should still be just a little loose on the chainsaw guide bar, but the chain needs to be tight enough that you can't pull the drive links out of the bar nose.

Why is my motorcycle chain tight and loose?

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.

How much play should be in a motorcycle chain?

Small adjustments of a quarter turn (or less if your chain is only slightly loose) are the safest bet. Measure the slack after every change. When the chain is within factory specifications (usually around 1.2–1.5 inches), tighten the axle nut to keep it from slipping.

Can you ride a motorcycle with a loose chain?

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).

Why do chainsaw chains stretch?

A chainsaw chain stretches and loosens from tension and extreme friction. The friction from cutting through wood makes the chain very hot and the heat causes it to loosen. The heat expands the guide bar and when it cools, the chain has stretched. The chain will also loosen as it wears down from use.

Why won't my chainsaw chain tighten?

If you can't tighten the chain, you may not be implementing the proper tightening procedure. To adjust the chain, loosen the nuts that hold the guide bar in place. These nuts are located on the side panel. Turn the tension control screw to the right to tighten the chain and to the left to loosen it.

How do I know if my chainsaw chain is tight enough?

The chainsaw chain should feel snug but still pull freely. Finally, perform a "snap" test to ensure proper saw chain tension. Simply pull the chain on the underside of the guide bar down so one or two drive links are out of the guide bar rails and release it. The chain should snap directly into position.

How often should you tighten your motorcycle chain?

You should check and adjust your chain every 500 miles (805 km), and more often for a dirt bike. It's also a great time to look for kinks or rust, and to give your chain a quick cleaning and lubrication, too.

How do you fix a loose motorcycle chain?

Turning the adjusters clockwise will tighten the chain, and counterclockwise will loosen it. By turning the adjusters, you're moving the whole wheel up and down the swingarm, so it's important to move them gradually and equally on both sides of the bike.

Why does my bike chain slip when I pedal hard?

The most common reason for the chain slipping is that the cable is stretched, then the solution is to tighten the shift cable. If the problem is that the chain is too long they will need to shorten the bike chain. If there is any damage to the sprocket, derailleur, chain, or cable you will need to replace it.

How long does a motorcycle chain last?

On average, you can expect to replace your chain and sprocket between 20,000 to 30,000 kilometers, less if you ride fast and hard. However, if you spot any damage to your chain or sprocket, it's better to just go and replace the prematurely-worn part right away.

Will a new motorcycle chain stretch?

A new motorcycle chain will appear to stretch during the first few rides after installation. However, a chain should not stretch too much immediately and might be defective if it continues to stretch or needs to be constantly adjusted.

Why does my chain keep getting 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 long should bike chain last?

Most mechanics agree that you should replace your chain about every 2,000 to 3,000 miles, depending on your riding style.

How much do chains stretch?

The number most commonly agreed on for a worn chain is one percent elongation between links. In reality though, you want to replace the chain before this point. So therefore anything past 12, 1/16 inches (0.5 percent) would be the time to replace a chain.