Your bike chain keeps falling off because it’s not properly tightened. When the bike chain is tight, it stays on your bike and makes pedaling much easier. A loose chain can also cause chafing and wear on the drivetrain, which can lead to a derailment or other problems down the road.
Here are the possible list of why your bike chain keeps falling off
- Front derailleur limit screws are not properly adjusted
- If Chain Falls inside the chainset the L screw needs to adjust
- If the Chain falls outside the chainset then Front derailleur H screws need to adjust
- Your Bike Don’t Have Chain catcher
- The chain is too long
- Chain or components are worn out
- Twisting the shifter too far
- The rear derailleur is not accurate
- The Chain Might be clogged and Dirty
- The Chainring might be bent
- Gear is too low or high in the range
It’s hard to keep your bike chain on tight when you’re cycling. But, there’s a good reason for it – it’s because your bike chain falls off because it’s not properly tightened. When your bike chain falls off, it makes it difficult to pedal and can even lead to accidents. In this post, we will discuss why does bike chain keeps falling off and some tips on how to tighten your bike chain properly.
1. Front derailleur limit screws are not properly adjusted
You may be able to adjust the front derailleur limit screws on your bike to make sure it’s in the correct position. If you can’t, then you need to adjust them. This is a quick fix and should only take a few minutes if done correctly.
2. If Chain Falls inside the chainset
If your chain falls inside of the chainring, then you will likely need to adjust one or more of your front derailleur limit screws. You can do this by turning them with a wrench. Be careful not to overtighten these screws–you might end up breaking them.
3. If the Chain falls outside of the chainring
If your chain falls outside of the chainring, then you will likely need to adjust one or more of your front derailleur h screws.
4. Your Bike Don’t Have Chain catcher
If your bike doesn’t have a chain catcher, you will need to install one before you can properly adjust your front derailleur limit screws or h screws. A chain catcher catches the chain so it doesn’t fall off the bike while you are riding and helps keep your drivetrain free from debris and damage.
5. The chain is too long
If the chain is too long, it can cause problems with your bike’s gearing. The front derailleur may not be able to adjust properly and your bike might feel clunky or jittery when you are riding. The result will be your bike chain keep falling off the chainring and drivetrain.
6. Chain or components are worn out
If your chain or components are old and worn out, they may not be able to handle the extra torque from your new drivetrain. You might need to replace these parts before you can adjust your front derailleur limit screws or h screws.
7. Twisting the shifter too far
If you are twisting the shifter too far, it might cause damage to your front derailleur. Over-twisting can also cause your bike chain to fall off the chain and drivetrain.
8. The rear derailleur is not accurate
If the rear derailleur is not accurate, it could cause your bike to behave erratically or not shift properly. In some cases, replacing the rear derailleur might fix this problem.
9. The Chain Might be clogged and Dirty
If the chain is clogged and dirty, it can cause your front derailleur to not rotate as smoothly as it should. This will cause your bike to feel jittery or choppy when you are riding and the chain might fall off the chainring. Cleaning your drivetrain regularly with a degreaser can help eliminate this problem.
10. The chainring is bent
If the chainring on your bike is bent, it will likely need to be replaced. This can be done at a bike shop or by using a bicycle repair tool. If you don’t have either of these options available to you, then you will likely need to adjust one or more front derailleur limit screws or h screws in order for your drivetrain to work properly.
11. Gear is too low or high in the range
If your bike chain is too low in range, the front derailleur won’t be able to go high enough to pedal effectively. This will cause more rear derailleur work, which then causes the chain to slip as you pedal. If your bike’s gears are too high or low in range, it can also cause problems with pedaling because of the difference in torque needed for different riding speeds.
Why does my bike chain keep slipping?
There are a few things that you can do to prevent your bike chain from slipping:
Check the tension of your chain: Over-tightening your chain will cause it to wear more quickly, and will also cause it to slip more. Make sure the tension is just right by adjusting the links using a tool like a bike chain tool.
Check your bike’s gearing: If your bike is too low or high in its gear range, it will be more difficult for you to pedal and will also slip more on the chain. Make sure your bike is in the correct gear for the terrain you are riding on.
Check your bike’s pedals: If your bike’s pedals are not adjusted properly, they will also cause the chain to slip. Make sure your pedal pins and screws are tight enough to keep the chain from moving.
Tighten your bike’s wheel spokes: over-tightening the spokes can also cause the chain to slip. Make sure the spokes are tight enough, but not so tight that they become brittle or misshapen.
Others Possible Reasons
There are other possible reasons for a bike chain to fall off. The chain might have become too long, and you need to shorten it by removing links. Another reason is the chain was bent or damaged during assembly. You can use a bend-able chain tool to straighten it out, but if that’s not possible you may need to replace the chain.
Also, check your bike’s derailleur for bent screws or worn-out plates. Finally, adjust your drivetrain components such as the cassette, chainring, and cogwheel to ensure they are correctly synced.
Also Read: How Long Does a Bike Chain Last
3 Best Solution if Bike Chain Keep Falling Off
- Reattach The Chain
- Use a Chain Catcher
- Use a Chain Guide
Reattach The Chain: If you can reattach the chain, do so as soon as possible. If the bike is not riding erratically or if it’s just a small chain link that has fallen off, you can try to salvage it by using a chain catcher. Simply place the catch over the gap and hold on while turning the crank. This action will pull the lost link back into place and keep your bike running smoothly.
Use A Chain Catcher: If you can’t reattach the chain or if it’s a large link that has fallen off, you may need to use a chain catcher.
Chain catchers are specially designed devices that grab onto the chain and keep it from falling off. They come in different sizes and shapes, so find one that fits your bike best.
Use A Chain Guide:
If you’re not able to use a chain catcher or if the chain has fallen off completely, you may need to use a chain guide. Chain guides are metal plates that slide over the bike’s drivetrain sprocket and derailleur wheel. They help keep the chain on track by preventing it from slipping off.
What if your chain is still coming off?
If your chain is still coming off, it means that the chain is too tight. You can loosen the chain by taking off one link at a time and re-adjusting the tension. You can also replace the chain if it’s stretched beyond its limit.
- If your chain still seems to be coming off despite your best efforts, it might be time to have it serviced!
- There are a few things that you can do to try and rectify the situation: use a degreaser, use a cleanser with a strong odor, or use a chain lubricant.
- If none of these work, it might be time to take your chain to a professional.
Bike chains are essential for keeping your bike moving smoothly and safely. However, over time they can start to become loose or fall off altogether. In this blog post, we’ve outlined the reasons why bike chains might start to fall off and provided tips on how to fix the issue. If you’re experiencing this problem, don’t worry, our guide can help you get your chain back on track!
How do I stop my bike chain from falling off?
Properly tighten your bike chain and clean it on a regular basis.
How do I keep my chain from falling off?
Adjust the front derailleur limit screws or h screws if needed.
What causes bike chain to come off?
The most common of which is riding over a bump or kink in the road that tears the chain. If you regularly commute on rough roads, it’s important to check your bike’s cassette and rear derailleur alignment to ensure they’re both set up properly and that there aren’t any bent spokes present.