Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

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.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 11-10-07, 11:58 PM   #1
PBR Streetgang
Senior Member
Thread Starter
 
PBR Streetgang's Avatar
 
Join Date: Jan 2006
Location: SF
Bikes:
Posts: 227
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Is it possible to use a modern symetrical bottom bracket with Campy NR cranks?

I did a search or two but came up empty. Is it possible to use a modern symetrical Campy bottom bracket with pre-date code NR cranks designed for an asymetrical spindle? I'm guessing that 115 mm might work. Thanks.
PBR Streetgang is offline   Reply With Quote
Old 11-11-07, 07:28 AM   #2
norskagent
car dodger
 
norskagent's Avatar
 
Join Date: Aug 2005
Location: garner/raleigh nc
Bikes:
Posts: 3,365
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
In my case, yes. I had to replace an old offset 112mm english threaded NR bottom bracket with a new campy veloce 111 mm, italian threaded. It was ~2mm too short for the frame I was using. Switched to a new veloce 115mm and everything lined up well. If the cranks you are using are older you can probably tighten them inwards further than if they were new, due to wear and tear.
norskagent is offline   Reply With Quote
Old 11-11-07, 04:45 PM   #3
PBR Streetgang
Senior Member
Thread Starter
 
PBR Streetgang's Avatar
 
Join Date: Jan 2006
Location: SF
Bikes:
Posts: 227
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks, norskagent. I just bought a NOS campy BB on ebay for $35.00, so I think I'm covered. Nevertheless, this information is good to know. So, if anyone can share their experiences with cartridge BBs used with Nuovo Record cranks, it would be appreciated. Thanks.
PBR Streetgang is offline   Reply With Quote
Old 03-18-11, 11:11 PM   #4
wallymann
Senior Member
 
wallymann's Avatar
 
Join Date: Jan 2010
Bikes:
Posts: 126
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
for C-Record strada/road cranks, you can use the modern centaur 111mm *symmetric* BB and it works perfect. same ISO taper, same spindle length, same symmetry as the orginal C-record cup-and-cone BB. lickton's calls it the "2008 Centaur 111mm" model, part#s: 0205-13 (eng) and 0205-15 (ita). this is the BB i installed on my somec with c-record cranks...works PERFECT!

i'm trying to figure out if the equivalent 115.5mm centaur will work with Nuovo/Super Record cranks. nuovo record BBs are ~115mm assymetrical and ISO tapers, with the longer spindle-end on the drive-side. the centaur spindle length looks right (enough, within ~1mm overall) and the ISO tapers are right, but i believe the 115.5mm centaur is also symmetric so you'll need some BB spacers to shift everything over to the drive-side. however, i dont have the difference in length between the drive- and non-drive sides of the nuovo record BB spindle to know how wide the spacer needs to be...DOH!

edit: based on the documentation i found here: http://www.minortriad.com/campagbb.html

a 68mm english nuovo record BB is 115.5mm overall with 49mm on the drive-side and 33.5mm on the non-drive (part# 744/A 68 SS). that's a difference of 15.5mm in spindle-end lengths. you'd need half of that in the form of a spacer to shift a symmetric BB over to the drive-side...15.5mm / 2 = 7.25mm thick spacer. say 7mm is close enough for gubment work.

7mm seems somewhat wide for a BB spacer, you're giving up alot of important threaded interface in the BB area. i'm reluctant to think this is a really workable retrofit. i might try it out and see how it works...

edit #2: i re-read that documentation and the spec i was using was for an older BB. the latest nuovo record BB spec is in chart-3 "new style". the nuovo record double BB is nominally 113.5mm long assymetric (28mm + 54mm + 31.5mm). and looking at the differences in spindle-length, it only has 3.5mm of assymetry.

so...going back to the symmetric 115.5mm centaur cartridge bb...dang, it's still not going to work, since the long spindle-end is on the fixed-cup side and you cant thread it in any further to "give" the extra length to the non-drive side. dang.

Last edited by wallymann; 05-26-11 at 07:47 AM. Reason: new info added
wallymann is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -6. The time now is 03:43 AM.