Nederlands | English | Deutsch

Project Sports

Questions and answers about sports

Chain catching after derailleur change

5 min read

Asked by: Matthew Swaney

Why does my chain keep come off when I change gear?

If your chain has started to come off frequently when it didn’t in the past, something in your bike setup has changed. The first thing to do is check that all of your drivetrain bolts are tight, that nothing has moved or got whacked, and to make sure your rear wheel is correctly seated in the dropouts.

Why does my new bike chain keep slipping?

Gear indexing issues



One of the most common reasons for a skipping chain is simply a drivetrain that needs a simple indexing adjustment. This is so common that even many brand new bikes can exhibit these symptoms. The good news is that this is probably the simplest to diagnose and fix of all potential issues.

Why does my chain slip under pressure?

Other problems associated with a worn drive train are bushings coming out of the chain, bent cog or chain ring teeth, and individual teeth breaking off of cogs or chain rings. All of these problems can cause a chain to skip while under pressure.

How do you adjust a derailleur to stop a chain from skipping?


Quote from video: Now one of the most common causes is simple derailleur adjustment on modern derailers with index shifting. The pulleys in the cage. Here should line up with the cog that the chain is on.

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 do I know if my derailleur is bent?

Quote from video: When we're trying to shift. Down becomes quite erratic or vice-versa. The key is to look at the rear derailleur we can see it's bent slightly inward.

How do I adjust the tension on my rear derailleur?

Quote from video: So what you want to do is first shift your bike into the smallest gear releasing all of the cable tension. And you'll feel that it's quite loose. Here. Once you've done that.

How do you check bike chain tension?

Quote from video: So straight away that gives me a little window in the top of the tool here which gives me a reading it says point two five at the moment which is as I would expect this is a very new bike.

Why does my rear cassette slip?

These can occur simultaneously – a dirty chain causes rapid chain wear, a worn out chain causes the cassette to wear out. If you have been riding with a slipping chain for long, you are very likely to have worn out both the chain and the cassette and will have to replace both.

Can wd40 be used on bike chains?

WD-40 is a great bike chain lube water based lubricant and will not only lubricate the chain well, but will also keep it rust and corrosion free.

How do I know if my chainring is worn out?

Rough/noisy running is the best way to tell if a chainring needs replacing,” says Chris Mckenney of SRAM. “Unless a chainring is well beyond its service life it is very difficult to see this visually; chainring teeth slowly take on the shape of a shark’s fin in use.

How often should a bike cassette be replaced?

Quote from video: Похожие запросы

How do you stop a chain from dropping?

Quote from video: Especially if you are standing up on the pedals. Or if you're pushing. Hard another way to keep the chain from coming off the inside of the chainset is to use a chain catcher these small additions are

Why does my bike chain keep clicking?

A clicking noise often comes from your chain wanting to jump up or down a gear on the rear cassette. This can typically be fixed by adjusting the tension of the cable that runs from your shifter to your rear derailleur.

How do you put tension on a bike chain?

Quote from video: And your chain ring just gently pull on your rear axle. And to get some tension to it after you do that just tighten. The attract nuts.

Why does my bike keep jumping gears?

Why Do Bicycle Chains Skip? When your bike chain skips between gears while you’re riding, or shifts twice instead of once when you try to change gears, the most common culprit is a loose cable. Your bike cables naturally stretch over time.

Why is my chain jumping?

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 stop a ghost from shifting?

Quote from video: Make sure your derailleur is vertically in line with the cassette pulley wheels and parallel to the wheel. And bike frame. If this is not the case and this is out of alignment.