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


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 06-06-08, 09:55 AM   #1
ch9862
Senior Member
Thread Starter
 
ch9862's Avatar
 
Join Date: Nov 2004
Location: Falls Church, VA
Bikes:
Posts: 260
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Chainring for Campy cranks?

I have 34-50 compact Campy crankset on one of my bikes. It's so flat here, I never seem to use the small ring. OTOH, when riding in traffic, I often find myself in 50-21 (e.g. when taking off when the light changes). This has me thinking about the chainline.

Is there a Campy-compatible 40 or 42 chainring I could replace the 34 with? That would probably be more useful for me in the city, whereas the 50 would still be fine on longer rides.

TIA
ch9862 is offline   Reply With Quote
Old 06-06-08, 10:05 AM   #2
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 29,111
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 175 Post(s)
Campy's compact cranks use a modified 110 mm bcd with one bolt hole off-set so that other maker's chainrings won't fit with out modification. Campy's only optional small ring is 36T.

You could buy any 110 mm bcd 40 or 42T chainring and file or Dremel the one bolt hole to match but the ring spacing and shifting quality might be compromised.
HillRider is online now   Reply With Quote
Old 06-06-08, 10:11 AM   #3
roadfix
hello
 
roadfix's Avatar
 
Join Date: May 2003
Location: Los Angeles
Bikes:
Posts: 18,589
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 27 Post(s)
I remember reading somewhere in these forums that the Centaur compact uses standard 110bcd rings. Could this be true?
roadfix is offline   Reply With Quote
Old 06-06-08, 10:19 AM   #4
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 29,111
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 175 Post(s)
Quote:
Originally Posted by roadfix View Post
I remember reading somewhere in these forums that the Centaur compact uses standard 110bcd rings. Could this be true?
I thought so too until I contacted Campy and was told Cenatur uses the same proprietary bolt pattern as Record and Chorus. Maybe Veloce doesn't but I'm not sure.
HillRider is online now   Reply With Quote
Old 06-06-08, 10:40 AM   #5
RockyMtnMerlin
Senior Member
 
RockyMtnMerlin's Avatar
 
Join Date: Sep 2005
Location: Laramie Wyoming
Bikes: Merlin Extralight Topolino Wheels Campy Record
Posts: 2,970
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
TA Nerius chain rings have the Campy odd 110 BCD if you don't want to file. Also Stonglight CT2 chain rings are in that bolt pattern. You find them on the internet (among other places). Not cheap though.
__________________
RockyMtnMerlin is offline   Reply With Quote
Old 06-06-08, 11:01 AM   #6
ch9862
Senior Member
Thread Starter
 
ch9862's Avatar
 
Join Date: Nov 2004
Location: Falls Church, VA
Bikes:
Posts: 260
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by HillRider View Post
You could buy any 110 mm bcd 40 or 42T chainring and file or Dremel the one bolt hole to match but the ring spacing and shifting quality might be compromised.
Thats' what I'm going to try, then. Shifting quality is not very important - I'm trying to avoid shifting in front .


Quote:
Originally Posted by RockyMtnMerlin View Post
TA Nerius chain rings have the Campy odd 110 BCD if you don't want to file. Also Stonglight CT2 chain rings are in that bolt pattern. You find them on the internet (among other places). Not cheap though.
Last sentence has me on alert! But thanks for the lead - I'll keep my eyes peeled.


Thanks!
ch9862 is offline   Reply With Quote
Old 06-06-08, 11:56 PM   #7
RockyMtnMerlin
Senior Member
 
RockyMtnMerlin's Avatar
 
Join Date: Sep 2005
Location: Laramie Wyoming
Bikes: Merlin Extralight Topolino Wheels Campy Record
Posts: 2,970
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
But not as expensive as Campy.
__________________
RockyMtnMerlin 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 07:42 AM.