Slipping Chain on Big Ring but not Small!

[grellboy]

On the big ring, chain slips as soon as under load. On the small ring, not at all! Any ideas why and also how to remedy would be very much appreciated.

 

[S-Express]

Maybe your big chainring is worn, and the small ring isn't.

 

[Rooster1]

Firstly - Is the chain and the ring the same age ?
Or No idea ?

 

[Rooster1]

If the teeth of the ring look like sharks fins

Then its likely the chain ring. A chain replacement might also be imminent.

 

[Yellow Saddle]

If the teeth of the ring look like sharks fins View attachment 339273

Then its likely the chain ring. A chain replacement might also be imminent.

No. A chain won't slip on that ring, especially if it is a large ring. The ring has to deteriorate to the next stage where the pointy bits change direction before you can even contemplate slippage.

 

[Yellow Saddle]

On the big ring, chain slips as soon as under load. On the small ring, not at all! Any ideas why and also how to remedy would be very much appreciated.

We haven't seen your (chain) ring yet, so speculating is pointless. Photo please.

 

[Sharky]

Do you mean that the chain slips on the big chainring itself or it slips on the rear cassette when on the front big ring?

 

[Smokin Joe]

Do you mean that the chain slips on the big chainring itself or it slips on the rear cassette when on the front big ring?

Sounds more likely. It would take some serious wear for the chain to slip on the large chainring but the extra torque would make it more likely to slip on a worn sprocket.

 

[fossyant]

New cassette and chain.

 

[Adam4868]

If big front and big rear there's a good chance it'll slip.

 

[Yellow Saddle]

If big front and big rear there's a good chance it'll slip.

Why do you say that?

 

[Rooster1]

I love trying to be helpful with suggestions and then having them dismissed. WRONG

It could any or all three parts of the setup, the cassette and the chain and the front chain ring. WRONG

The owner thinks the big ring is jumping, and I've had this before but you never really know where the jumping is taking place but sometimes it can be obvious. WRONG

It could even be a bad single stiff chainlink for all we know. YOU ARE WRONG

I am just offering suggestions and asking for clarification. WRONG AGAIN.

I've edited my own post to save others the trouble. RIGHT

 

[Yellow Saddle]

I love trying to be helpful with suggestions and then having them dismissed. WRONG

It could any or all three parts of the setup, the cassette and the chain and the front chain ring. WRONG

The owner thinks the big ring is jumping, and I've had this before but you never really know where the jumping is taking place but sometimes it can be obvious. WRONG

It could even be a bad single stiff chainlink for all we know. YOU ARE WRONG

I am just offering suggestions and asking for clarification. WRONG AGAIN.

I've edited my own post to save others the trouble. RIGHT

Stop feeling sorry for yourself and don't make suggestions as if from a position of authority if you are not in such a position.

Your earlier suggestion was misleading.

 

[mythste]

I love trying to be helpful with suggestions and then having them dismissed. WRONG

It could any or all three parts of the setup, the cassette and the chain and the front chain ring. WRONG

The owner thinks the big ring is jumping, and I've had this before but you never really know where the jumping is taking place but sometimes it can be obvious. WRONG

It could even be a bad single stiff chainlink for all we know. YOU ARE WRONG

I am just offering suggestions and asking for clarification. WRONG AGAIN.

I've edited my own post to save others the trouble. RIGHT

 

[gbb]

I see a willy waving situation is evolving again.