Loose rear hanger on Sight- Mtbr.com
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  1. #1
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    Loose rear hanger on Sight

    Put a new derailleur on the sight (2016 carbon) over the weekend and I noticed when I tightened the rear derailleur hanger bolt that the derailleur can move/wiggle a little around the axis of that bolt.

    Any one else experience this?
    Last edited by hbar314; 05-16-2017 at 10:32 AM.

  2. #2
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    Same thing happens to my 2015 Range Carbon. There is an indentation on the hanger that goes into a hole in the frame. That hole is a bit bigger. I line it up after tightening the bolt and have no issues unless I crash or hit the RD.

  3. #3
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    Yeah, just seems like an odd thing going on.

  4. #4
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    Keep in mind that the hanger is sandwiched between the hub end cap and the dropout when the axle is tightened, holding it in place.

    Does it move with the wheel in the frame?

  5. #5
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    Quote Originally Posted by brentos View Post
    Keep in mind that the hanger is sandwiched between the hub end cap and the dropout when the axle is tightened, holding it in place.
    Does it move with the wheel in the frame?
    The hanger isn't sandwiched between the hub end cap and the frame.
    It just bolts to the bottom of the frame triangle.

    But yes, it moves when its tight and the wheel is off or on the bike.

  6. #6
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    Quote Originally Posted by hbar314 View Post
    The hanger isn't sandwiched between the hub end cap and the frame.
    It just bolts to the bottom of the frame triangle.

    But yes, it moves when its tight and the wheel is off or on the bike.
    My bad, I had assumed it was the same arrangement and hanger as my Norcos. (Revolver, Ithaqua, Threshold).

    If it's moving around with the wheel on, I'd want to get it fixed too.

  7. #7
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    That hanger design a to allow for the breakaway hanger bolt. Downside is that on the first crash the hanger rotates a bit and chips away at the frame.

  8. #8
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    Quote Originally Posted by Washirican3 View Post
    That hanger design a to allow for the breakaway hanger bolt. Downside is that on the first crash the hanger rotates a bit and chips away at the frame.
    I would assume so on that if my frame wasn't new.
    Took the hanger off and the hole isn't chipped at all.

    All I can surmise is that pedaling will pull the derailleur to one side making the tolerance of the hole a non issue. If it moves away, bad shifting for a pedal stroke or so while it moves back.

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