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  1. #1
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    Post Mount Disc Brake Standard

    Hi, can anyone point me towards a drawing of the the Post Mount Standard for Disc brakes?
    Cheers

  2. #2
    Nouveau Retrogrouch SuperModerator
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    Look on the Hayes site
    mtbtires.com
    The trouble with common sense is it is no longer common

  3. #3
    pvd
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  4. #4
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    Wow, the drawing on the Hayes website is shocking!
    Thanks pvd, those drawings are great.

  5. #5
    Nouveau Retrogrouch SuperModerator
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    Quote Originally Posted by Moff
    Wow, the drawing on the Hayes website is shocking!
    mtbtires.com
    The trouble with common sense is it is no longer common

  6. #6
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    Awesome.... im guessing that for the rear axle is exactly the same right, just rotated.
    t[SIZE="3"]here are a couple of words that will open you many many doors in life....... push and pull.[/SIZE]

  7. #7
    just ride
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    Quote Originally Posted by coghi View Post
    Awesome.... im guessing that for the rear axle is exactly the same right, just rotated.
    No. The original IS standard had the disc tab aligned with the dropout face, not 4mm offset out like the front. So, the rear PM standard would be centerline 5mm inboard of dropout face.
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  8. #8
    pvd
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    Actually, 5.7mm for rear.



    Shimano Framebuilder Info - Pvdwiki

  9. #9
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    Anyone doing post mounts on the chainstays? I know Fixie Inc do some. Any others?

  10. #10
    bee
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    Quote Originally Posted by shandcycles View Post
    Anyone doing post mounts on the chainstays? I know Fixie Inc do some. Any others?

    Yeah. I'd like to know too. And, where oh where oh where can I find a place that sells the dropouts with the post mounts integrated into the dropout? Getting accurant post mount alignment parallel to the dropout face is very hard to do.

  11. #11
    just ride
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    Quote Originally Posted by shandcycles View Post
    Anyone doing post mounts on the chainstays? I know Fixie Inc do some. Any others?
    We did on our Fargo, and we are on our Vaya.

    We don't integrate them with the dropout because while it would be easier initially to create alignment, and dropout that huge has a larger tendency to warp during welding, so we found that separating the pieces makes more sense, even though it is still really hard to keep alignment on that post-mount.

    Any post-mount that is welded, and then does not have a post-CNC process or some type of insert is going to be really hard to keep aligned. This is why IS is so popular, it is easy to take a facer parallel to dropout face in there and shape it up fast.
    MTBR Disclaimer: I work for Salsa Cycles
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  12. #12
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    Question-Sorry do not mean to hijack this thread-I have old Paragon sliders with I S standard. Does Paragon now make a post mount slider that I can change too? Thanks in advance...

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