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 07-31-08, 09:14 AM   #1
frymaster
Senior Member
Thread Starter
 
frymaster's Avatar
 
Join Date: Aug 2007
Location: where the mild things roam
Bikes:
Posts: 1,092
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
bcd question

here's the deal: i have these cranks. sugino gt's. they're five-bolt road cranks for two chainrings. i like them rather a lot.

however, i've now gone a stripped some teeth down on my chainring and would like to get a replacement. the question is: what's the bcd? it's not written anywhere on the cranks, my measurement ability is insufficiently accurate to come up with the right number and sheldon brown doesn't seem to have that info squirrled away anywhere.

help?
frymaster is offline   Reply With Quote
Old 07-31-08, 09:20 AM   #2
Little Darwin
The Improbable Bulk
 
Little Darwin's Avatar
 
Join Date: Jul 2005
Location: Wilkes-Barre, PA
Bikes: Many
Posts: 8,401
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
A lot of the Suginos were 110mm, but I don't know the GT specifically. The first entry on this page will help you figure it out: http://www.sheldonbrown.com/gloss_bo-z.html
__________________
Slow Ride Cyclists of NEPA

People do not seem to realize that their opinion of the world is also a confession of character.
- Ralph Waldo Emerson
Little Darwin is offline   Reply With Quote
Old 07-31-08, 11:18 AM   #3
FLYcrash
Senior Member
 
Join Date: Mar 2008
Location: Chicago, IL, USA
Bikes: 1974 Raleigh Sports
Posts: 307
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
What's my BCD?

You can calculate/look up your BCD with a ruler and the info posted there. Make sure to go from the center of one bolt hole to the center of the next. Sheldon does explain this measurement, and he also quotes the formula for calculating the BCD from it.

Search feature, guys, search feature...
FLYcrash 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 01:54 AM.