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 11-27-11, 09:45 PM   #1
Rooskavich
Newbie
Thread Starter
 
Join Date: Nov 2011
Bikes:
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Chainline with Hub Choice

I have a 2008 Kona Paddy wagon that I just purchased a pair of velocity fusion rims for. I am looking for the right sealed hubs to lace up, right now. I am caught between pauls and profiles, but both have a 44mm chainline (with the Kona being 42mm), will this be a problem? I have a Sram External BB with a 48t Sram Crank up front. I am trying to learn as much as possible about chainline theory, so I do not buy hubs and have issues later. Thanks for the help
Rooskavich is offline   Reply With Quote
Old 11-28-11, 04:56 AM   #2
mihlbach
Senior Member
 
mihlbach's Avatar
 
Join Date: Dec 2005
Location: Long Island, NY
Bikes:
Posts: 6,419
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
Quote:
Originally Posted by Rooskavich View Post
I am caught between pauls and profiles, but both have a 44mm chainline (with the Kona being 42mm), will this be a problem?
No.

Last edited by mihlbach; 11-28-11 at 10:18 AM.
mihlbach is offline   Reply With Quote
Old 11-28-11, 10:18 AM   #3
mihlbach
Senior Member
 
mihlbach's Avatar
 
Join Date: Dec 2005
Location: Long Island, NY
Bikes:
Posts: 6,419
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
But if it still bothers you, use a narrower cog. I haven't take any measurments, but comparing them side-by-side my Eighth Inch track cog is narrower than some of my other cogs (Surly, Dura Ace). A narrower cog will bring your chainline in a mm or so.
mihlbach is offline   Reply With Quote
Old 11-28-11, 12:46 PM   #4
Rooskavich
Newbie
Thread Starter
 
Join Date: Nov 2011
Bikes:
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
What type of cog do you use or who else makes narrow cogs. Would using a BB spacer make more sense? Does anyone have preference between profile or pauls? Let me know
Rooskavich is offline   Reply With Quote
Old 11-28-11, 01:08 PM   #5
mihlbach
Senior Member
 
mihlbach's Avatar
 
Join Date: Dec 2005
Location: Long Island, NY
Bikes:
Posts: 6,419
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
What would make the most sense is to just use whichever hub you like best. Having your chainline off by 1-3 mm doesn't mean anything. Are you even sure that your present chainline is 42mm? (which has nothing to do with your frame, BTW). Unless you have measured it, you really can't be sure. Its very difficult to measure it to that degree of accuracy anyway. The reason those hubs have slight differences is because a few mm makes no difference whatsoever.

If you want to achieve a perfect chainline with BB spacers and so forth, get your wheels built first and see what kind of chainline issues you have, if any.
mihlbach is offline   Reply With Quote
Old 11-28-11, 01:57 PM   #6
Rooskavich
Newbie
Thread Starter
 
Join Date: Nov 2011
Bikes:
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks for all the help. The only reason I asked, because this is my first wheel build and I have no experience with either of the two, I was just seeing if you had? Again, thank you
Rooskavich is offline   Reply With Quote
Old 11-28-11, 03:21 PM   #7
mihlbach
Senior Member
 
mihlbach's Avatar
 
Join Date: Dec 2005
Location: Long Island, NY
Bikes:
Posts: 6,419
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
Before you build your wheel, thread the cog (finger tight only!) onto the hub and take some measurements. All of these hubs are compatible with a standard road double and track crank/BB combo. If you end up with more than 4-5 mm of chainline error (very unlikely) then you ought to consider doing something about it. If necessary there are plenty of ways to tweak a mm of chainline here and there...you can buy a different width cog, add a small spacer behind the cog, add a BB spacer, move your chainring from the outside to inside (if its a double), and redish your wheel slightly and rearrange spacers.

Last edited by mihlbach; 11-28-11 at 03:24 PM.
mihlbach is offline   Reply With Quote
Old 11-28-11, 04:26 PM   #8
Rooskavich
Newbie
Thread Starter
 
Join Date: Nov 2011
Bikes:
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I appreciate the help. Do you have any references on how to build wheels. My rear wheel is 36h and front is 32h. Any literature on wheel building would help out a lot. Thanks
Rooskavich is offline   Reply With Quote
Old 11-28-11, 04:37 PM   #9
wearyourtruth
Ride for Life
 
wearyourtruth's Avatar
 
Join Date: Jun 2004
Location: Baltimore
Bikes:
Posts: 2,729
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Rooskavich View Post
I appreciate the help. Do you have any references on how to build wheels. My rear wheel is 36h and front is 32h. Any literature on wheel building would help out a lot. Thanks
http://sheldonbrown.com/wheelbuild.html

behold, thy bible.
wearyourtruth 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 10:02 AM.