Go Back  Bike Forums > Bike Forums > Classic & Vintage
Reload this Page >

What is this mystery threaded hole for?

Notices
Classic & Vintage This forum is to discuss the many aspects of classic and vintage bicycles, including musclebikes, lightweights, middleweights, hi-wheelers, bone-shakers, safety bikes and much more.

What is this mystery threaded hole for?

Old 09-13-21, 06:44 AM
  #26  
USAZorro
Seor Member
 
USAZorro's Avatar
 
Join Date: Oct 2004
Location: Hardy, VA
Posts: 17,585

Bikes: Mostly English - predominantly Raleighs

Mentioned: 64 Post(s)
Tagged: 0 Thread(s)
Quoted: 1327 Post(s)
Liked 794 Times in 483 Posts
Mount for a mini-pump bracket?
__________________
In search of what to search for.
USAZorro is offline  
Likes For USAZorro:
Old 09-13-21, 06:45 AM
  #27  
himespau 
Senior Member
Thread Starter
 
himespau's Avatar
 
Join Date: Jun 2008
Location: Louisville, KY
Posts: 13,314
Mentioned: 32 Post(s)
Tagged: 0 Thread(s)
Quoted: 3852 Post(s)
Liked 2,668 Times in 1,593 Posts
Originally Posted by Doug Fattic
Back in the late 80's I remember putting some under the top tube water bottle bosses to hold a short Blackburn pump that had a holder designed for those under the top tube bosses. I don't think Blackburn made that holder for long. They went to holders that could fit on the side of a water bottle cage but was held in place by its bosses..
I was wondering there was something like that that it could be. Did the holder use one or 2 bosses? Was it proud enough to get over this number holder - I'm pretty sure it's brazed on, not screwed into a second boss?
himespau is offline  
Old 09-13-21, 07:23 AM
  #28  
Doug Fattic 
framebuilder
 
Join Date: Dec 2009
Location: Niles, Michigan
Posts: 1,371
Mentioned: 48 Post(s)
Tagged: 0 Thread(s)
Quoted: 562 Post(s)
Liked 1,654 Times in 572 Posts
Originally Posted by himespau
I was wondering there was something like that that it could be. Did the holder use one or 2 bosses? Was it proud enough to get over this number holder - I'm pretty sure it's brazed on, not screwed into a second boss?
The Blackburn holder was held in place with 2 water bottle bosses (M5 thread). The pump clipped into the holder and was held more securely in place with a velcro strap. The velcro strap went around both the pump and the top tube. I believe that holder would have worked with the 2 boss arrangement on your Colnago. The number plate boss could have slipped through the holder slot and the other boss and velcro stop been enough to security hold the pump.
Doug Fattic is offline  
Likes For Doug Fattic:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.