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

British and Italian thread question

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.

British and Italian thread question

Old 06-04-11, 02:10 PM
  #1  
deathhare
:jarckass:
Thread Starter
 
deathhare's Avatar
 
Join Date: Aug 2006
Location: Nashville
Posts: 6,562
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 1 Time in 1 Post
British and Italian thread question

I recently bought a frameset from someone on here and was told its BB shell was british thread.
I bought a british threaded campy BB and it doesnt fit.
It falls thru as its too small of a diameter for the BB shell.
Does this mean its most likely Italian thread? I have no experience with Italian stuff but I think its slightly larger. Im curious if perhaps it could be anything else? I doubt it would be but I dont want to buy yet another BB that doesnt work.
Gets expensive.

Trying to figure out what I need.
I was planning to get another Veloce BB. I have a Campy Centaur square taper crankset.

Thanks
deathhare is offline  
Old 06-04-11, 02:18 PM
  #2  
Grand Bois
Senior Member
 
Grand Bois's Avatar
 
Join Date: Mar 2005
Location: Pinole, CA, USA
Posts: 17,415
Mentioned: 24 Post(s)
Tagged: 0 Thread(s)
Quoted: 437 Post(s)
Likes: 0
Liked 9 Times in 9 Posts
Italian bottom bracket shells are right threaded on the drive side and they're normally 70 mm wide rather than the standard 68 mm, so it shouldn't be hard to tell if it's italian.
Grand Bois is offline  
Old 06-04-11, 02:34 PM
  #3  
deathhare
:jarckass:
Thread Starter
 
deathhare's Avatar
 
Join Date: Aug 2006
Location: Nashville
Posts: 6,562
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Thanks.
There is a diameter difference too, right?
This british BB I bought falls right thru the hole without touching threads.

BTW, the shell of this bike is 70mm.
deathhare is offline  
Old 06-04-11, 02:44 PM
  #4  
Bianchigirll 
Bianchi Goddess
 
Bianchigirll's Avatar
 
Join Date: Apr 2009
Location: Shady Pines Retirement Fort Wayne, In
Posts: 27,494

Bikes: Too many to list here check my signature.

Mentioned: 146 Post(s)
Tagged: 2 Thread(s)
Quoted: 1997 Post(s)
Liked 834 Times in 510 Posts
YES it is Italian.
__________________
Bianchis '90 Proto, '90 Campione del Fausto Giamondi Specialisma Italiano Mundo, '91 Boarala 'cross, '93 Project 3, '86 Volpe, '97 Ti Megatube, '93 Reparto Corse SBX

Others but still loved; '80 Batavus Professional, '87 Cornelo, '?? Jane Doe (still on the drawing board), '90ish Haro Escape SLX Bertoni "Speckled Trout"
Bianchigirll is offline  
Old 06-04-11, 04:52 PM
  #5  
iab
Senior Member
 
iab's Avatar
 
Join Date: Jun 2006
Location: NW Burbs, Chicago
Posts: 10,921
Mentioned: 152 Post(s)
Tagged: 0 Thread(s)
Quoted: 2294 Post(s)
Liked 1,506 Times in 686 Posts
https://www.sheldonbrown.com/gloss_bo-z.html#bottom
iab is offline  
Old 06-04-11, 08:40 PM
  #6  
JohnDThompson 
Old fart
 
JohnDThompson's Avatar
 
Join Date: Nov 2004
Location: Appleton WI
Posts: 22,854

Bikes: Several, mostly not name brands.

Mentioned: 134 Post(s)
Tagged: 0 Thread(s)
Quoted: 2688 Post(s)
Liked 1,398 Times in 869 Posts
Originally Posted by deathhare View Post
Thanks.
There is a diameter difference too, right?
This british BB I bought falls right thru the hole without touching threads.

BTW, the shell of this bike is 70mm.
Yes. Italian shells are 36mm inside diameter; English shells are 1.37" (34.8mm) inside diameter. In conjuction with a 70mm wide shell, it appears you have an Italian thread bottom bracket.
JohnDThompson is offline  
Old 06-05-11, 07:37 AM
  #7  
deathhare
:jarckass:
Thread Starter
 
deathhare's Avatar
 
Join Date: Aug 2006
Location: Nashville
Posts: 6,562
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Thanks for the help.
deathhare is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
shuru421
Classic & Vintage
1
02-12-19 08:37 PM
Andrey
Bicycle Mechanics
10
06-29-18 10:27 AM
cheeseroller
Bicycle Mechanics
7
12-13-14 02:01 PM
horatio
Bicycle Mechanics
4
09-14-11 12:09 PM
aaronshtan
Classic & Vintage
14
09-08-11 12:37 PM

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 My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.