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  1. #1
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    Derailleur exploded...upgrade to 10speed?



    Bike had 2004ish deore XT 9 speed drivetrain, I had to replace the front derailleur last year so that's a newer XT triple derailleur now.


    Can I upgrade to 10-speed in the rear with just a chain/cassette/derailleur/rear shifter?
    2013 Trek/Gary Fisher Rumblefish Elite XXL/23"
    120mm 29er

    2004 Santa Cruz Bullitt XL White
    170mm 26er

  2. #2
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    Yes you can, but the shifting will not be as nice up front as it would with a proper 10 speed crank/shifter.

    There are some good reasons to upgrade to 10 speed, but unless you are going to get a shadow+ derailleur with a clutch, you'll be missing the biggest reason, and I would advise you to stick with 9 speed.

  3. #3
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    Quote Originally Posted by wschruba View Post
    Yes you can, but the shifting will not be as nice up front as it would with a proper 10 speed crank/shifter.

    There are some good reasons to upgrade to 10 speed, but unless you are going to get a shadow+ derailleur with a clutch, you'll be missing the biggest reason, and I would advise you to stick with 9 speed.
    I don't see that tech mentioned on the XT shadow RD I was looking at - Shimano Deore XT M773-SGS 10-Speed Shadow Rear Derailleur - Normal Shipping Ground

    It seems all the clutch does from this article -
    Tech Tuesday - Inside Shimano's Shadow Plus Mech and How To Adjust It - Pinkbike
    Is reduce the need for a roller chain guide, which I don't find myself needing much anyways. I don't care when my chain is slapping around when going through rough terrain, it's never popped off or anything really happened to me until this morning when the RD exploded and I have put thousands of rough single track miles on this bike since 2004.

    I was looking at going to 10-speed to be able to use an 11-36 cassette.
    2013 Trek/Gary Fisher Rumblefish Elite XXL/23"
    120mm 29er

    2004 Santa Cruz Bullitt XL White
    170mm 26er

  4. #4
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    Certainly is a good reason to want to hit up 10 speed. My concern was that you were getting the upgrade-itis.

    The biggest benefit of the clutch is tensioning the chain better than a traditional derailleur. So yes, it does (more or less) decrease the need for a chain guide, but it also makes for a much quieter ride.

  5. #5
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    interesting.

    I can find the XT rd without it for $50, with it for $98, and an SLX with it for $79. Is it worth the extra for the XT version over the SLX?


    My rear shifter is really sloppy/worn out (mainly the thumb lever to go up to larger cogs) and my cassette has been in need of replacement for a few months, I've been getting skipping under heavy loads on a couple gears. So I think right now is a very good time to replace all the rear drivetrain parts + a new chain (2 links got super bent when this happened) and may as well go to 10-speed since it will work. I'll replace the crankset for a double sometime in the future I imagine.
    2013 Trek/Gary Fisher Rumblefish Elite XXL/23"
    120mm 29er

    2004 Santa Cruz Bullitt XL White
    170mm 26er

  6. #6
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    Sounds like an excellent plan to me. XT components are a bit lighter and a bit more durable in my experience, but SLX level components are certainly good for a budget oriented build.

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