Procedure for larger cassettes

Quoted post said:

Originally posted by bigmatt
Hi,

I am changing out my stock cassette from a 12-25 Ultegra to a 12-27. I have a new chain to go with it and am wondering if I need to make the new chain longer and if adjustments to limit screws etc. are nessasary.

Thanks in advance for the tips! This is my first post and I am looking forward to using this forum.

Best, -Matt

😄

The chain might need to be longer,but since the original chain could have been sized several different ways there is no way to know. www.parktool.com has the drill on chain length. Don't mess with the limit screws. the B tension might need tweaking.

Quoted post said:

Originally posted by boudreaux
The chain might need to be longer,but since the original chain could have been sized several different ways there is no way to know. www.parktool.com has the drill on chain length. Don't mess with the limit screws. the B tension might need tweaking.

Thanks!

The B tension is the screw that pushes on the hanger?

Quoted post said:

Originally posted by bigmatt
Thanks!

The B tension is the screw that pushes on the hanger?

All you'll ever need to know:

http://www.bikeforums.net/showthread.php?t=38747

And make sure you check your H/L limits. I've swapped cassettes and been suprised.

Quoted post said:

Originally posted by dobber
All you'll ever need to know:

http://www.bikeforums.net/showthread.php?t=38747

That's a mind numbing amount of drivel to sort thru to size a chain.

Quoted post said:

Originally posted by boudreaux
That's a mind numbing amount of drivel to sort thru to size a chain.

Ha!

Thanks again Boudreaux & Dobber.