Changing cassettes

[Audible Anarchy]

i have a new set of wheels with a different cassette size.

 

the difference in ratios is minor - the current wheels / setup has a 12-25 and the new wheels have a 11-25- if i want to use them, is it just a matter of swopping the wheels? or do i need to make adjustments to the rear derailer?

 

any advice would be appreciated before i try them out / risk damaging the drivetrain?

 

cheers

[AndreZA]

Go ahead, not problem.

[TNT1]

Depends how worn your chain is. Try the new wheels, if the chain skips, you will probably need a new chain.

[rudi-h]

yes, you can just swop the wheels. no risk, no problem

[Audible Anarchy]

chain is about 5000kms old, still in good nick as far as i can tell.

[Eldron]

i have a new set of wheels with a different cassette size.

 

the difference in ratios is minor - the current wheels / setup has a 12-25 and the new wheels have a 11-25- if i want to use them, is it just a matter of swopping the wheels? or do i need to make adjustments to the rear derailer?

 

any advice would be appreciated before i try them out / risk damaging the drivetrain?

 

cheers

 

Go for it as Andre says but...

 

The wheel dishing may be a few mm's different so you may need to reset your gear cable tension.

 

Also check your limit screws the first time you do it - in worst case scenario your chain could come off the inside of the cassette, get jammed between the cassette/spokes and cause some nasty damage.

 

Best idea is once you've done the change run the gears on your bike stand for a while and manually try to get the chain off the cassette at the back - if it doesn't come off you should be safe...

[Wonder Woman]

I've often changed cassettes from a 12-23 / 12-25 & 12-27 and have never had a days problem.