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Thread: Bikes: Bottom Bracket Bolt for Specialized Sirius (Cable Guide)

  1. #1
    Phil
    Guest Phil's Avatar

    Default Bikes: Bottom Bracket Bolt for Specialized Sirius (Cable Guide)

    I have a 90's vintage Specialized Sirius road bike. I had to replace
    the cable guide beneath the bottom bracket, and there was not bolt.
    Can anyone tell me what size bolt I need to attach the guide to the
    bracket?

    Phil

  2. #2
    JBAFromNY
    Guest JBAFromNY's Avatar

    Default Bikes: Bottom Bracket Bolt for Specialized Sirius (Cable Guide)

    On Aug 1, 10:50.am, Phil <plaw...@messiah.edu> wrote:
    > I have a 90's vintage Specialized Sirius road bike. I had to replace
    > the cable guide beneath the bottom bracket, and there was not bolt.
    > Can anyone tell me what size bolt I need to attach the guide to the
    > bracket?
    >
    > Phil


    As near as I can tell the hole on my ca. '91 Sirrus isn't threaded.
    The cable guide is just a plastic plug with a small hole for screw
    that expands it enough to keep it in place. By eye, I'd guess it's
    maybe a 3mm screw.

  3. #3
    invasivenorman
    Guest invasivenorman's Avatar

    Default Bikes: Bottom Bracket Bolt for Specialized Sirius (Cable Guide)

    On Aug 1, 6:29.pm, JBAFromNY <ja...@nyc........> wrote:
    > On Aug 1, 10:50.am, Phil <plaw...@messiah.edu> wrote:
    >
    > > I have a 90's vintage Specialized Sirius road bike. I had to replace
    > > the cable guide beneath the bottom bracket, and there was not bolt.
    > > Can anyone tell me what size bolt I need to attach the guide to the
    > > bracket?

    >
    > > Phil

    >
    > As near as I can tell the hole on my ca. '91 Sirrus isn't threaded.
    > The cable guide is just a plastic plug with a small hole for screw
    > that expands it enough to keep it in place. .By eye, I'd guess it's
    > maybe a 3mm screw.


    Considering the terrifying stresses involved, I would try a daub
    of some random adhesive I had lying about the house.

  4. #4
    Qui si parla Campagnolo
    Guest Qui si parla Campagnolo's Avatar

    Default Bikes: Bottom Bracket Bolt for Specialized Sirius (Cable Guide)

    On Aug 1, 5:29.pm, JBAFromNY <ja...@nyc........> wrote:
    > On Aug 1, 10:50.am, Phil <plaw...@messiah.edu> wrote:
    >
    > > I have a 90's vintage Specialized Sirius road bike. I had to replace
    > > the cable guide beneath the bottom bracket, and there was not bolt.
    > > Can anyone tell me what size bolt I need to attach the guide to the
    > > bracket?

    >
    > > Phil

    >
    > As near as I can tell the hole on my ca. '91 Sirrus isn't threaded.
    > The cable guide is just a plastic plug with a small hole for screw
    > that expands it enough to keep it in place. .By eye, I'd guess it's
    > maybe a 3mm screw.


    Got to a decent bike shop and have them thread that hole to a more
    common size and replace the guide with one that has a teeny bolt.

  5. #5
    Phil
    Guest Phil's Avatar

    Default Bikes: Bottom Bracket Bolt for Specialized Sirius (Cable Guide)

    On Aug 2, 8:48.am, Qui si parla Campagnolo <pe...@vecchios.com> wrote:
    > On Aug 1, 5:29.pm, JBAFromNY <ja...@nyc........> wrote:
    >
    > > On Aug 1, 10:50.am, Phil <plaw...@messiah.edu> wrote:

    >
    > > > I have a 90's vintage Specialized Sirius road bike. I had to replace
    > > > the cable guide beneath the bottom bracket, and there was not bolt.
    > > > Can anyone tell me what size bolt I need to attach the guide to the
    > > > bracket?

    >
    > > > Phil

    >
    > > As near as I can tell the hole on my ca. '91 Sirrus isn't threaded.
    > > The cable guide is just a plastic plug with a small hole for screw
    > > that expands it enough to keep it in place. .By eye, I'd guess it's
    > > maybe a 3mm screw.

    >
    > Got to a decent bike shop and have them thread that hole to a more
    > common size and replace the guide with one that has a teeny bolt.


    I think you're right about it not being threaded. The old guide had a
    small post that fit tightly; the new guide has two holes, no post, so
    nothing to hold it. The hole isn't so small, though--it is at least 6
    mm--a 5 mm bolt won't hold it.

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