Go Back  Bike Forums > Bike Forums > Singlespeed & Fixed Gear
Reload this Page >

Replacing a sealed bearing track hub with a longer axle?

Notices
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)

Replacing a sealed bearing track hub with a longer axle?

Old 07-12-08, 12:08 PM
  #1  
tbrtbx
Senior Member
Thread Starter
 
Join Date: Jan 2007
Posts: 486
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Replacing a sealed bearing track hub with a longer axle?

Anyone know how to do it? I've got a 120mm spaced track hub, and need to use it in a 130mm frame. I can't cold-set because it's carbon fibre, but I don't know how to replace the axle. If I knock it out, it just knocks out the bearings.

Can anyone help?
tbrtbx is offline  
Old 07-12-08, 12:17 PM
  #2  
allencb
Senior Member
 
Join Date: Nov 2006
Posts: 171
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
What model hub?

How much axle do you have? You might not need to replace the axle, just put some spacers inboard of the locknuts. The Formula hubs I've seen online seem to have a ton of axle outside of the track nuts when mounted to a frame. Seems to me you might have enough to respace the locknuts on the existing axle. Put the hub in a 120mm frame and tighten the nuts. Measure the axle sticking out past the track nuts. If you have 5mm or more on each end, you should be good to go with simple spacers.

FWIW, I did this when adapting my Ultegra hubs (130mm) to work in my Surly LHT frame (spaced for 135mm). The difference was only 5mm, but it worked well. I've put 1000 miles on that combo since respacing the hub.

Chris
allencb is offline  
Old 07-12-08, 12:26 PM
  #3  
tbrtbx
Senior Member
Thread Starter
 
Join Date: Jan 2007
Posts: 486
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Thanks for the reply, Chris.

They are the same model as these, only with different branding


When putting the hub in the 130 frame, the axle only extends about 1mm on either side, meaning I can tighten it, but only by bending the stays..
tbrtbx is offline  
Old 07-12-08, 12:36 PM
  #4  
operator
cab horn
 
Join Date: Jun 2004
Location: Toronto
Posts: 28,353

Bikes: 1987 Bianchi Campione

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 42 Post(s)
Likes: 0
Liked 23 Times in 17 Posts
Huh?

If you knock it out... the axle is out, then replace with the longer axle. What's the problem? You can purchase formula axles just by itself?
operator is offline  
Old 07-12-08, 12:38 PM
  #5  
allencb
Senior Member
 
Join Date: Nov 2006
Posts: 171
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Yeah, it doesn't look like you'll have enough axle for the method I described.

According to https://sheldonbrown.com/harris/fixed-hubs.html#formula, you can respace the hubs up to 130mm. I assume that means with a new axle. You might check with them, they probably have the axles in stock. I saw on their page what looks to be the stock axle and removing it will knock the bearings out, but it's a simple matter to press them back in when you install the new axle.

Chris
allencb is offline  
Old 07-12-08, 12:48 PM
  #6  
tbrtbx
Senior Member
Thread Starter
 
Join Date: Jan 2007
Posts: 486
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
OK - thanks! Will look for some longer axles.
tbrtbx is offline  
Old 07-12-08, 01:53 PM
  #7  
tbrtbx
Senior Member
Thread Starter
 
Join Date: Jan 2007
Posts: 486
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Cant find them there, so before this thread died, does anyone know who stocks them?
tbrtbx is offline  
Old 07-12-08, 02:10 PM
  #8  
allencb
Senior Member
 
Join Date: Nov 2006
Posts: 171
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
No clue. You might try the place you got the hubs from. Did you try calling Harris? Are they Harris hubs or Formula?

Chris
allencb is offline  
Old 07-12-08, 02:23 PM
  #9  
tbrtbx
Senior Member
Thread Starter
 
Join Date: Jan 2007
Posts: 486
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Ill try the place I got them, they are Ambrosio hubs, which are just like formula hubs.

Thanks.
tbrtbx is offline  

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2022 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.