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 12-04-10, 02:36 PM   #1
fopianki
Senior Member
Thread Starter
 
Join Date: Jul 2005
Bikes:
Posts: 129
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Middle chainring (Deore LX) for a 1994 Cannondale T700

Hi folks, I commute to work on my trusty 1994 Cannondale T700 touring bike. After noticing some skipping when pedaling while on the middle chainring I noticed that there are several teeth either worn down or broken. This is a 5 bolt, 32 teeth chainring for a Deore LX. Hard to measure the Bolt diameter with a 5 bolt pattern. My LBS said to bring it down and they will look at it and then order the correct chainring. This is a problem since I'm currently restricted from driving due to a recently diagnosed seizure disorder. (Yes, I'm allowed to ride my biKe! ) Does anyone know where I could find the correct chainring order online/ If necessary, how should I measure the diameter? thanks Frank
fopianki is offline   Reply With Quote
Old 12-04-10, 02:49 PM   #2
JanMM
rebmeM roineS
 
JanMM's Avatar
 
Join Date: Jan 2006
Location: In Central IN
Bikes: RANS V3, RANS V-Rex, RANS Screamer
Posts: 13,288
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 10 Post(s)
I put a '93 LX crankset on a '94 C-dale hybrid and it was 110 BCD.
To measure for confirmation of the size: http://www.sheldonbrown.com/gloss_bo-z.html

Loose Screws has a good selection of rings.
http://www.loosescrews.com/index.cgi...d=519832830230
__________________
RANS V3 - Ti, RANS V-Rex - cromo, RANS Screamer - cromo
JanMM is offline   Reply With Quote
Old 12-04-10, 06:35 PM   #3
hybridbkrdr
we be rollin'
 
hybridbkrdr's Avatar
 
Join Date: Oct 2009
Location: Quebec, Canada
Bikes:
Posts: 1,570
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Just out of curiosity, if you have the correct BCD, does it make any difference if you have let's say a Sora crankset and you want to buy a Tiagra or 105 chainring? Will it still be compatible?
hybridbkrdr is offline   Reply With Quote
Old 12-04-10, 07:09 PM   #4
bikeman715
Senior Member
 
bikeman715's Avatar
 
Join Date: Mar 2008
Location: Salinas , Ca.
Bikes: Bike Nashbar AL-1 ,Raligh M50 , Schwinn Traveler , and others
Posts: 2,402
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
as long the BCD are correct no it doesn't matter who the mfg. is.
bikeman715 is offline   Reply With Quote
Old 12-04-10, 08:10 PM   #5
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: 28,776
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 36 Post(s)
Are you SURE the worn chainring ring is 32 teeth? A 110 mm bcd will not accept any chainring with less than 33T and 34T is far more common. If you truly have a 32T chainring, the bcd is smaller than 110 mm.
HillRider is offline   Reply With Quote
Old 12-04-10, 08:26 PM   #6
AEO
Senior Member
 
AEO's Avatar
 
Join Date: Jun 2007
Location: A Coffin Called Earth. or Toronto, ON
Bikes: Bianchi, Miyata, Dahon, Rossin
Posts: 12,258
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by bikeman715 View Post
as long the BCD are correct no it doesn't matter who the mfg. is.
except campagnolo.
campagnolo 110BCD is a bit different on one arm, compared to the standard everyone else uses, for whatever reason.
__________________
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
http://sanfrancisco.ibtimes.com/arti...ger-photos.htm
AEO is offline   Reply With Quote
Old 12-04-10, 08:33 PM   #7
operator
cab horn
 
Join Date: Jun 2004
Location: Toronto
Bikes: 1987 Bianchi Campione
Posts: 28,306
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by bikeman715 View Post
as long the BCD are correct no it doesn't matter who the mfg. is.
Actually it does. OP will probably get subpar shifting with anything other than a shimano ring. People need to understand that just because someone else makes a chainring you can bolt on doesn't mean it'll work as well as the crankset was designed. Not only that, the OP will also have to make sure that the rings are for the correct speed drivetrain anyways.
operator is offline   Reply With Quote
Old 12-06-10, 10:04 PM   #8
fopianki
Senior Member
Thread Starter
 
Join Date: Jul 2005
Bikes:
Posts: 129
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by HillRider View Post
Are you SURE the worn chainring ring is 32 teeth? A 110 mm bcd will not accept any chainring with less than 33T and 34T is far more common. If you truly have a 32T chainring, the bcd is smaller than 110 mm.
You're right...it was a typo...there are 42 teeth...my apologies for the confusion!
fopianki 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 07:24 PM.