Retrobike Forum Index

Retrobike Forum Index » Road » Retro Classic Road

It is currently Sat Aug 19, 2017 6:23 pm
* Login   * Register * Search  * FAQ



Post new topic Reply to topic  Page 1 of 1
  [ 6 posts ] 
  Previous topic | Next topic 
Author Message
ededwards
 Post subject: Merckx b/b query
PostPosted: Sat Nov 20, 2010 7:20 pm 
Pumpy's Bear
Pumpy's Bear
User avatar

Joined: Mon Oct 10, 2005 10:03 pm
Posts: 8148
Location: Hereford
The Corsa Extra always has an Italian thread, right? But does shell size vary - the cups on a 600 b/b I had off another Corsa Extra just too small.

A bit confused :?
Top
 Profile  
 
Elev12k
 Post subject:
PostPosted: Sat Nov 20, 2010 7:37 pm 
Concours Judge
Concours Judge
User avatar

Joined: Wed Jul 06, 2005 3:59 pm
Posts: 8221
Location: a proper EU country
The diameter is smaller? That must be Belgian treading :lol:

Ed, it sounds a bit like the 600 is British. Italian is larger diameter and threads the other way round on the drive side.

British says 1.37
It says 1.36..
Top
 Profile  
 
ededwards
 Post subject:
PostPosted: Sat Nov 20, 2010 7:49 pm 
Pumpy's Bear
Pumpy's Bear
User avatar

Joined: Mon Oct 10, 2005 10:03 pm
Posts: 8148
Location: Hereford
Elev12k wrote:
The diameter is smaller? That must be Belgian treading :lol:

Ed, it sounds a bit like the 600 is British. Italian is larger diameter and threads the other way round on the drive side.

British says 1.37
It says 1.36..


Thanks Mel, as you say, it is 1.37 but that has me confused as it came out of another Corsa Extra so I was pretty sure I could just pop it in and off I went. Oh well.
Top
 Profile  
 
garethrl
 Post subject: Re: Merckx b/b query
PostPosted: Sun Nov 21, 2010 12:12 pm 
Retro Guru
User avatar

Joined: Wed Dec 19, 2007 10:05 am
Posts: 979
Location: Brussels
Hi Ed,
My Corsa takes an Italian BB. It hadn't even occurred to me that it might be the case so imagine my surprise when the British one I'd bought for it slid straight through! :roll:

As a sanity check, measure the BB shell width. Italian is 70mm, British is 68mm. There may be slight variations, but 2mm would be extreme.

Cheers,
Gareth.

ededwards wrote:
The Corsa Extra always has an Italian thread, right? But does shell size vary - the cups on a 600 b/b I had off another Corsa Extra just too small.

A bit confused :?
Top
 Profile  
 
dbmtb
 Post subject:
PostPosted: Sun Nov 21, 2010 4:17 pm 
Gold Trader
Gold Trader
User avatar

Joined: Wed Jun 20, 2007 11:19 pm
Posts: 7006
Location: Odense, Denmark
Every steel Mercxx I've had my hands on has been Italian thread.
Top
 Profile  
 
ededwards
 Post subject:
PostPosted: Sun Nov 21, 2010 6:25 pm 
Pumpy's Bear
Pumpy's Bear
User avatar

Joined: Mon Oct 10, 2005 10:03 pm
Posts: 8148
Location: Hereford
dbmtb wrote:
Every steel Mercxx I've had my hands on has been Italian thread.


Exactly, even the mid 70s 531c I had was Italian threaded hence my confusion.

Only thing that I can think of is that the 600 b/b that I thought came out of the 7-11 Corsa Extra was in fact out of another frame - but the groupset on the bike was 600 throughout so seems weird as I definitely swopped out the b/b when I fitted a Campag chainset. Oh well, one of lifes little mysteries I guess.
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 6 posts ] 

Retrobike Forum Index » Road » Retro Classic Road

All times are UTC [ DST ]

Who is online

Users browsing this forum: kermitgreenkona88, Wileyone and 24 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
New Forum Posts
Dura ace ax seatpost
 Poster: spitball
 Date: Sat Aug 19, 2017 6:22 pm

Boulder
 Poster: RockiMtn
 Date: Sat Aug 19, 2017 6:17 pm

show us your gt's
 Poster: mkone
 Date: Sat Aug 19, 2017 6:12 pm

Modern brakes on old frames
 Poster: mrmeat
 Date: Sat Aug 19, 2017 6:08 pm

Raleigh Quadra or Scirocco?
 Poster: legrandefromage
 Date: Sat Aug 19, 2017 5:52 pm

About Us

Follow Retrobike

Other cool stuff
All content © 2005-2015 Retrobike unless otherwise stated.
Cookies Policy.
bikedeals - the best bike deals in one place
FatCOGS - Fat Chance Owner's Group

Powered by phpBB® Forum Software © phpBB Group