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.
How tight does a bike chain need to be?
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.
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 do bike chains get 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 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.
Is my chain to 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.
How do you tension a bike chain?
How to Tighten a Bike Chain (Updated 2021)
- Step 1: Put your bike in the correct position.
- Step 2: Loosen the rear axle.
- Step 3: Pull back on the rear tire.
- Step 4: Make sure that you have the right chain tension.
- Step 5: Tighten the rear tire back into place.
- Step 6: Test the chain and the tire.
What does a chain tensioner do on a motorcycle?
The chain tensioner is connected to the rear of the bike either near the monoshock or most preferably on the swingarm near the rear chain sprocket and its cog is connected to the chain drive with an adjustment to give the chain some stretch so as to gain optimum slack and tightness to the chain operation.