Changing Chain - Must the cassette also go

[lloydkayak]

Howsit,

 

A mate borrowed my bike and the chain is no more. I have read somewhere that the cassette and chain should be changed together. Is this true?

 

Also, will any 9 speed chain fit a 9 speed cassette (regardless of number of teeth)

 

Cheers forumites

[petatodd]

I have read somewhere that the cassette and chain should be changed together. Is this true

 

Not always. Measure your chain with a chain measure. If the chain stretch is greater than .75 but less than 1 then you can replace the chain only. If over 1 you must replace the cassette as well as the chain.

 

any 9 speed chain fit a 9 speed cassette

 

Yes

[lloydkayak]

Sweet... Thanks for the info

[droo]

Measure your chain with an inch ruler. If the centre distance between pins 12 links apart is more than 12 1/16 inches, chances are your cassette's stuffed. 12 1/8 inches and you can certainly throw it away.

 

Or the simple version (since you seem not to have your original chain) - fit a new chain and ride up a hill, making sure you spend a good honk or two in each gear on the cassette. If the chain skips, you need a new cassette.

 

For more on the subject, https://community.bikehub.co.za/topic/109516-the-great-chaincassettegears-thread/page__st__16

 

(And as with any question, it's best to do a search in Tech Q&A before starting a new thread that's exactly the same as a million others...)

[Dustbin Dog]

Howsit,

 

A mate borrowed my bike and the chain is no more. I have read somewhere that the cassette and chain should be changed together. Is this true?

 

Also, will any 9 speed chain fit a 9 speed cassette (regardless of number of teeth)

 

Cheers forumites

 

I would normally fit the new chain with the old cassette (if it is not obvious that the cassette should be replaced) then ride the bike. If the chain does not slip on the cassette then ride as is. Remember a worn cassette will not damage a new chain but a worn chain will damage a new cassette and chain rings.