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


Go Back   > >

Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

User Tag List

Reply
 
Thread Tools Search this Thread
Old 06-26-05, 05:52 PM   #1
toman
green
Thread Starter
 
Join Date: Sep 2004
Location: Portland
Bikes:
Posts: 53
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Chainline: Freewheel vs. cog?

On a regular freewheel hub, is there any difference in the chainline between a bmx type freewheel and a track cog? I'm thinking about switching from a freewheel to a bumbike setup while I save for a proper track hub, but I'm wondering if it will affect my chainline which is perfect as it is.
toman is offline   Reply With Quote
Old 06-26-05, 05:54 PM   #2
jacobs
Senior Member
 
jacobs's Avatar
 
Join Date: Apr 2005
Location: Boston, MA
Bikes: http://www.jacobsbicycles.com
Posts: 787
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
It will have a little difference, but no more than 2-3mm.
jacobs is offline   Reply With Quote
Old 06-26-05, 05:57 PM   #3
baxtefer
Cornucopia of Awesomeness
 
baxtefer's Avatar
 
Join Date: Oct 2004
Location: not where i used to be
Bikes:
Posts: 4,847
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
http://www.sheldonbrown.com/chainline/#sprockets
baxtefer is offline   Reply With Quote
Old 06-26-05, 08:08 PM   #4
r-dub
likes avocadoes
 
Join Date: Nov 2004
Location: oakland, ca
Bikes: heh, like that info would fit here...
Posts: 1,125
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
there will probably be a little bit of chainline difference unless you spend some time doing the math and getting it perfect. If that's the case, go for straight chainline with the fixed side and let the freewheel be a little bit off.
r-dub is offline   Reply With Quote
Old 06-26-05, 08:21 PM   #5
BostonFixed
Banned.
 
Join Date: Oct 2004
Bikes:
Posts: 4,418
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The 2-3mm that jacobs said ISN'T going to make a difference.
BostonFixed is offline   Reply With Quote
Old 06-26-05, 09:24 PM   #6
IchbinJay
Senior Member
 
IchbinJay's Avatar
 
Join Date: Oct 2004
Location: Massachusetts
Bikes: Jamis Ventura Comp (2010) and Raleigh M80 (1998).
Posts: 446
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I concur. Depending on the type of chain you have (geared vs. BMX style) there is actually a good amount of play that will allow for the difference in positioning.
IchbinJay is offline   Reply With Quote
Old 06-26-05, 10:40 PM   #7
toman
green
Thread Starter
 
Join Date: Sep 2004
Location: Portland
Bikes:
Posts: 53
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
cool, sounds like it should work fine since I'm using a bmx type chain and the chainline is about perfect as it is.
toman 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 05:35 AM.