Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Possible to replace front hub axle for narrower one?

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.

Possible to replace front hub axle for narrower one?

Old 02-24-12, 09:47 PM
Junior Member
Thread Starter
Join Date: Feb 2012
Location: Toronto, Canada
Posts: 15

Bikes: Department store Schwinn turned frankenbike, 1986 Bianchi Strada, fixed gear with 1980 Canadian custom road frame

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Possible to replace front hub axle for narrower one?

Hi there,

I bought a pair of 700C rims for an old 10 speed frame yesterday. Unfortunately the front dropouts are slightly too narrow to fit onto the hub axle. I've looked at the previous posts about this problem, and it looks like a way around this is filing the axle or the dropouts. Filing the axle appears to win out over filing the dropouts because the fork might not be balanced if you shave off more on one side. But wouldn't that be the exact same concern if the axle is shaved?

Instead of shaving down any parts, I'm wondering if it's possible to replace the axle and locknuts with narrower ones.
Attached Images
File Type: jpg
015.JPG (55.4 KB, 13 views)
File Type: jpg
018.JPG (56.4 KB, 13 views)
eliott is offline  
Old 02-25-12, 01:17 AM
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 43,598

Bikes: 8

Mentioned: 197 Post(s)
Tagged: 0 Thread(s)
Quoted: 7607 Post(s)
Liked 1,350 Times in 857 Posts
So, you got a bike at X mart bike with 3/8 solid axle spec,
and now want to fit a 9mm QR axle in it?
fietsbob is offline  
Old 02-25-12, 04:28 AM
Really Old Senior Member
Bill Kapaun's Avatar
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 13,668

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 1716 Post(s)
Liked 1,121 Times in 787 Posts
I've seen axles that were made with flat spots.
Maybe ask your LBS?

IF you file them yourself, you're probably going to have issues "buggering" the lock nut & cone threads every time you take one off to service the bearings.
I much prefer them to turn SMOOTH when tweaking that last little adjustment.
Bill Kapaun is offline  
Old 02-25-12, 09:31 AM
Senior Member
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 33,656

Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!

Mentioned: 39 Post(s)
Tagged: 0 Thread(s)
Quoted: 2025 Post(s)
Likes: 0
Liked 1,089 Times in 736 Posts
Don't file the axle. The last thing you want is to weaken it. I'd file the dropouts working on the same face (front OR rear) on both sides of the fork and stop as soon as the axle fits. Also, dont file the top of the dropout as you don't want the wheel "cocked" vertically either.

I just realized this is a double post and FBinNY gave the same advice I did on the other thread.

Last edited by HillRider; 02-25-12 at 09:35 AM.
HillRider is offline  
Related Topics
Thread Starter
Last Post
Bicycle Mechanics
10-06-19 07:46 AM
Bicycle Mechanics
06-01-18 01:27 PM
Bicycle Mechanics
12-26-15 02:28 AM
Bicycle Mechanics
02-25-12 09:39 AM
Classic & Vintage
07-06-11 11:27 PM

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread

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

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.