Cage Size of Record Rear Derailleur

Discussion in 'Cycling Equipment' started by puma, Mar 14, 2004.

  1. puma

    puma New Member

    Joined:
    Jul 23, 2003
    Messages:
    135
    Likes Received:
    0
    I just want to make sure that I'm purchasing the right cage sized rear derailleur. The formula for these things appears to be:

    Computing Capacity:
    (Large Chainring - Small Chainring)
    + (Large Rear Cog - Small Rear Cog)
    = Capacity

    Computing Front Diff.
    Large Chainring - Small Chainring = Front Diff.

    I run a double 10 speed:

    chainrings=54/44T
    cogs=11/23T

    So my Capacity would be 23 and my Front Diff. would be 10

    So looking at the record guidelines:

    Short-
    Min. sprocket 11t
    Max. sprocket 26t
    Capacity. 27t
    Max. front diff. 14

    I should be getting a short, right?

    Thanks.
     
    Tags:


  2. fushman

    fushman New Member

    Joined:
    Feb 13, 2004
    Messages:
    394
    Likes Received:
    0
    yup, definately a short cage dr with that set up

    btw thats quite some gearing to have for the bay area, im sure id appreciate it going down hill, but id never be able to get up in the first place!
     
  3. puma

    puma New Member

    Joined:
    Jul 23, 2003
    Messages:
    135
    Likes Received:
    0
    Yeah, I know. But, I live in the flatter parts (Stanford/Palo Alto) of the SF area, and I prefer speed over altitude. Thanks for the reply.
     
Loading...
Loading...