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  1. #1
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    Drivetrain Question...

    So my Prophet are it's rear derailleur on a ride Thursday afternoon. In the process of ordering parts, but need some clarification from those of you who are much more knowledgeable than I.

    I'm replacing an XT rd-m786 (beleive a med cage) with a traditional 11-36t 10 SPD. I want to upgrade to the Sunrace 11-42t 10spd. Do I need a long cage rd-m786 to get over that taller 42? Some people are recommendeding the XT m8000 11spd as an option as well!?!? I'm running a race face NW 30t, but also have a 32 and 34 sitting in my tool case. Planning to buy a new chain as well... assume a traditional shimano 10spd chain will do the job? Also, what are the chances I'll need a Goat Link to make it work?

    Thanks in advance!

    Pic for reference...

    20180201_163228 by k2blt, on Flickr

    20180201_160937_001 by k2blt, on Flickr

  2. #2
    Mr. Buck E. Fikes
    Reputation: Oh My Sack!'s Avatar
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    You will be fine running a GS cage length. Though I'm on XTR, a GS length covers an 11-46T just fine so you should be golden. As for M8000? Yeah, you could run it but you're looking at replacing cassette, chain, RD, and Shifters to do it.

    Also, after looking at that carnage, I'd strongly suggest buying a new derailleur hanger as your's is likely tweaked.

  3. #3
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    Quote Originally Posted by Oh My Sack! View Post
    You will be fine running a GS cage length. Though I'm on XTR, a GS length covers an 11-46T just fine so you should be golden. As for M8000? Yeah, you could run it but you're looking at replacing cassette, chain, RD, and Shifters to do it.

    Also, after looking at that carnage, I'd strongly suggest buying a new derailleur hanger as your's is likely tweaked.
    Thanks for the info @Oh My Sack! Parts ordered. As it'll likely become my backup bike next year when I wrap up grad school, the xt will suffice for the next 12 months. Good call on the derailleur hanger. Just checked and it's done... Hairline crack on the frame side.

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