Under Bottom Bracket Shell Cable Guide Issue
03-06-18 | 09:10 AM
#1
Thread Starter
Junior Member
Joined: Sep 2017
Posts: 5
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Under Bottom Bracket Shell Cable Guide Issue
I’m nearing the end of my first restoration project and need to attach the plastic gear cable guide. however I have a problem.
I don’t have the screw or bolt that attaches the plastic cable guide to the bottom of the BB shell as it mustve gotten lost when I sent the bike to get re-painted. I dont know what I need to attach the cable guide as when I inspected the shell I saw two holes and neither appeared to have threading. I’ll attach photos of what the guide looked like before it was sent off to be re-painted. Do I need a screw/bolt or a rivet? Can these be replaced?
Thanks for any help!
BBFF5B17-AB07-428D-8B00-96A812B500F8.jpg
A35C5D52-F6D3-4C0F-A98B-02CC1C1CDB4D.jpg
I don’t have the screw or bolt that attaches the plastic cable guide to the bottom of the BB shell as it mustve gotten lost when I sent the bike to get re-painted. I dont know what I need to attach the cable guide as when I inspected the shell I saw two holes and neither appeared to have threading. I’ll attach photos of what the guide looked like before it was sent off to be re-painted. Do I need a screw/bolt or a rivet? Can these be replaced?
Thanks for any help!
BBFF5B17-AB07-428D-8B00-96A812B500F8.jpg
A35C5D52-F6D3-4C0F-A98B-02CC1C1CDB4D.jpg
03-06-18 | 09:24 AM
#2
Bianchi Goddess
Joined: Apr 2009
Posts: 28,890
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From: Shady Pines Retirement Fort Wayne, In
Bikes: Too many to list here check my signature.
You really just need a short machine screw of the correct diameter. You could either take the frame to the hardware store or find something of about the same diameter as the hole to take with you as a guide. I'd try and get stainless steel
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
03-06-18 | 11:33 AM
#6
All Campy All The Time
Joined: Nov 2013
Posts: 1,432
Likes: 124
From: Richmond, Virginia
Bikes: Listed in my signature.
Some bottom bracket sets include a plastic sleeve to keep crud out of the bearing. Any screw, rivet, stud, etc. used to hold that guide should be short enough to not interfere with insertion or removal of the sleeve.
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My C&V Bikes:
1972 Bottecchia Professional, 1972 Legnano Olympiade Record,
1982 Colnago Super, 1987 Bottecchia Team C-Record,
1988 Pinarello Montello, 1990 Masi Nuova Strada Super Record,
1995 Bianchi Campione d'Italia, 1995 DeBernardi Thron
My C&V Bikes:
1972 Bottecchia Professional, 1972 Legnano Olympiade Record,
1982 Colnago Super, 1987 Bottecchia Team C-Record,
1988 Pinarello Montello, 1990 Masi Nuova Strada Super Record,
1995 Bianchi Campione d'Italia, 1995 DeBernardi Thron
03-06-18 | 11:47 AM
#7
Senior Member
Joined: Jul 2009
Posts: 786
Likes: 6
Once the cables are run and properly adjusted, all that guide needs to do is not slip. The cables will keep it snug to the frame (unless you run them slack and then cross-chain small-small, in which case shame on you twice.) The fastener has only to resist a tiny amount of shear forces. A pop rivet or a small machine screw is all that is needed. You could even use a plastic auto trim anchor that fits the hole.
03-06-18 | 12:36 PM
#8
03-06-18 | 01:06 PM
#10
Guess not.
03-07-18 | 12:00 AM
#11
Bike Butcher of Portland
Joined: Jul 2014
Posts: 12,444
Likes: 7,978
From: Portland, OR
Bikes: It's complicated.
The ones I buy come with M5 button heads, but you can tap and drill whatever works. An M5 or 10-32 drill and tap set would do the trick. Make sure you use a "just right" length screw. Too short, obviously you won't catch enough threads, too long and you could hit a sealed bottom bracket.
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If someone tells you that you have enough bicycles and you don't need any more, stop talking to them. You don't need that kind of negativity in your life.
If someone tells you that you have enough bicycles and you don't need any more, stop talking to them. You don't need that kind of negativity in your life.
