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

Phil 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

Probably 5mmx0.8 (Look cleat bolt, for example) or 4mmx0.7 (water bottle
cage bolt, for example). Your local hardware store will have both for
cheap (20-50 cents each). Pick 'em both up and use the one that works.

Mark J.

On Aug 1, 10:50*am, Phil 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.

On Aug 1, 6:29*pm, JBAFromNY wrote:
On Aug 1, 10:50*am, Phil 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.

On Aug 1, 5:29*pm, JBAFromNY wrote:
On Aug 1, 10:50*am, Phil 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.

On Aug 2, 8:48*am, Qui si parla Campagnolo wrote:
On Aug 1, 5:29*pm, JBAFromNY wrote:

On Aug 1, 10:50*am, Phil 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.