New Chain Slipping.

[David Shellman]

Hello, new member here.

I'm pretty experienced when it comes to repairs and maintenance but I'd like a second opinion. I've just replaced the chain on my Boardman MHT. Due to regular use - my bikes are my exercise machines and take some hammering - I'm quite meticulous when it comes to changing the chain and every six months is the norm.
I replaced the cassette less than a year ago and recently changed the chain as it was over 75% worn.
The new chain started slipping in the highest gear. Thinking I over-lubricated, I wiped the chain clean and took it for a short drive - still slipping. I then took a link out of the chain - still slipping.
I put the old chain back on the bike and up until now there is no slipping.
Should a new chain slip on a cassette which is barely year old?
I'm now looking at leaving the old chain on the bike and running both the chain and cassette into the ground until they both need changing. Any opinions?

 

[richardfm]

Sounds like the cassette is worn.

 

[roubaixtuesday]

Should a new chain slip on a cassette which is barely year old?

Just depends on wear. Wouldn't surprise me.

Run into the ground is fine. But you are likely to total the chainrings too, which can be much more pricey than a cassette.

 

[Ming the Merciless]

Sounds like the cassette is worn.

OP says they are experienced in this. Thus presumably tried a new cassette to eliminate that being the issue?

 

[Alex321]

Hello, new member here.

I'm pretty experienced when it comes to repairs and maintenance but I'd like a second opinion. I've just replaced the chain on my Boardman MHT. Due to regular use - my bikes are my exercise machines and take some hammering - I'm quite meticulous when it comes to changing the chain and every six months is the norm.
I replaced the cassette less than a year ago and recently changed the chain as it was over 75% worn.
The new chain started slipping in the highest gear. Thinking I over-lubricated, I wiped the chain clean and took it for a short drive - still slipping. I then took a link out of the chain - still slipping.
I put the old chain back on the bike and up until now there is no slipping.
Should a new chain slip on a cassette which is barely year old?
I'm now looking at leaving the old chain on the bike and running both the chain and cassette into the ground until they both need changing. Any opinions?

Age of the cassette in months is almost irrelevant, it is how many miles you have done on it that matters, and how many of those miles were with a fairly worn chain. Or were winter miles wit lots of grit and gunge.

If you leave it too long to change the chain, then the cassette is much more likely to also need changing. If it slips with a new chain, but not the old, then it definitely needs changing.

As others have said, if you carry on riding it with the worn chain, you will probably also knacker the large chainring, and possibly the small one as well (assuming a 2x setup).

 

[Ajax Bay]

Age of the cassette in months is almost irrelevant, it is how many miles you have done on it that matters, and how many of those miles were with a fairly worn chain. Or were winter miles wit lots of grit and gunge.
If you leave it too long to change the chain, then the cassette is much more likely to also need changing. If it slips with a new chain, but not the old, then it definitely needs changing.

This ^^.

I'm now looking at leaving the old chain on the bike and running both the chain and cassette into the ground until they both need changing.

Can do this but bear in mind the extended chain will wear your chain ring faster. New cassette is the best route.
Presumably a 1x so the cassette will not be cheap.
https://www.tredz.co.uk/.Shimano-CS...ations=colour:Silver,option:11-46t&sku=772124
https://www.tredz.co.uk/.Boardman-MHT-8-6-Mountain-Bike-2026-Hardtail-MTB_281550.htm
"a wide 11-48T cassette and a 32T chainring"

 

[David Shellman]

Thanks everyone. I suspected it was a worn cassette but I did expect it to last a little longer than a year. I guess I needed another opinion or two. Thanks.

 

[richardfm]

OP says they are experienced in this. Thus presumably tried a new cassette to eliminate that being the issue?

Never presume, or assume, anything.