Cycling Equipment · Public discussion

Upgrading Derailleurs

Started by cleavesf · · Last activity · 2 posts · 555 views

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Cycling Equipment
Published
31 May 2006
Last activity
31 May 2006
Original author
cleavesf
Posts
2
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Public discussion
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555
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Topics
Front derailleursDrivetrain compatibilityRear derailleurs

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  1. Original post
    cleavesf
    Archived post
    #1

    Hi,

    I have a Trek 4300, with the stock deraillers and shifters. I wanted to upgrade to the Deore XT or XTR, but those are 24 and 27 speeds respectively.

    I have XT hubs on Mavic wheels. I can clearly see that my rear tire certainly has room for one more cassette ring, so I'm pretty sure 24 would work.

    Is there any chance I can go up to 27?

    Also which version should I buy? I'm very confused with the top and bottom pull and angle. I looked at my front derailleur and I see it's 66-69 degrees. I can't tell if it's bottom or top pull though, because it seems to get pulled from the side. I'm baffled.

    If I upgrade to more speeds, that would mean I would only have to buy a cassette, rear derail, and new shifter for my rear derailleur right? I assume the front derailleur I buy is gonna be compatible anyways since 3 rings is maxed out right?

    Report
  2. artmichalek
    Archived post
    #2
    cleavesf said:


    I have XT hubs on Mavic wheels. I can clearly see that my rear tire certainly has room for one more cassette ring, so I'm pretty sure 24 would work.

    Is there any chance I can go up to 27?

    So I take it you have a 7 speed cassette now? If this is the stock setup it's unlikely that it's on a 8-9 speed freehub, even if it looks like you have more room. It's possible to break a 9 speed cassette down to an 8 speed and put it on a 7 speed freehub, but getting all 9 is out of the question without a new hub.

    cleavesf said:


    If I upgrade to more speeds, that would mean I would only have to buy a cassette, rear derail, and new shifter for my rear derailleur right? I assume the front derailleur I buy is gonna be compatible anyways since 3 rings is maxed out right?

    Both derailleurs will work, but if you want more gears you will need a new rear shifter.

    Report

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