Advertise on Bikeforums.net



User Tag List

Results 1 to 4 of 4
  1. #1
    Senior Member Stefan.'s Avatar
    Join Date
    Sep 2010
    Location
    Eugene Oregon
    My Bikes
    2007 f3 13 pinarello
    Posts
    59
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Swapping out cassettes- adjust deraileur/chain length?

    Hi there. I recently purchased a pinarello that came with "junior gearing" (14-25 I believe). I want to swap out the cassette for an 11-25. Does this require the rear deraileur to be adjusted, or to change the length of the chain. Since the highest gear remains the same, I don't think so, but just want to confirm.

    Thanks all. Long time lurking, first time poster.

  2. #2
    Junior Member constant mesh's Avatar
    Join Date
    Aug 2010
    Location
    Pannonia
    My Bikes
    SCOTT Tampico
    Posts
    22
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Chain lenght will be fine, the only RD adjustment that you will have to do is the spring screw if you have one, but usually it's a straight swap, because your lowest sprockets are the same.

  3. #3
    thompsonpost
    Guest
    That's "B screw" adjustment you refer to.

  4. #4
    Senior Member andrewluke's Avatar
    Join Date
    Oct 2009
    Location
    Alexandria, VA
    My Bikes
    2010 CAAD9 w/ SRAM Red
    Posts
    444
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Just remove the chain and move the derailleur by hand back and forth to see the spacing between the cogs and the guide pulley (the one closest to the cogs). Adjust by turning the B-screw. You normally want that around 5-10mm from the cogs to the pulley at its closest point depending on manufacturer (I set based on the big cog with an 11-25/28 and SRAM). It can be checked and set with the chain on but it's a lot easier without.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •