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

Bent Axle, what else to change ?

Notices
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.

Bent Axle, what else to change ?

Old 05-14-17, 01:47 PM
  #1  
Tahoon
Junior Member
Thread Starter
 
Join Date: May 2017
Posts: 8
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Bent Axle, what else to change ?

i had abike with bent axle and the bearing nut is completely deformed.
i'm getting new 145mm axle and wondering wheather it's logical to change any other parts since the axle deformation may had caused on other parts.

i've checked the ball bearing (loose ones) and can't see any problem !
Tahoon is offline  
Old 05-14-17, 01:54 PM
  #2  
79pmooney
Senior Member
 
79pmooney's Avatar
 
Join Date: Oct 2014
Location: Portland, OR
Posts: 11,511

Bikes: (2) ti TiCycles, 2007 w/ triple and 2011 fixed, 1979 Peter Mooney, ~1983 Trek 420 now fixed and ~1973 Raleigh Carlton Competition gravel grinder

Mentioned: 119 Post(s)
Tagged: 0 Thread(s)
Quoted: 4000 Post(s)
Liked 2,883 Times in 1,874 Posts
First thing to do is check to make sure your dropouts are aligned. I'm guessing they are not. Properly aligned, the slots are in line and the inside faces of the dropout are parallel. Any good shop has the tools (it takes a matched pair) to quickly assess both these issues. If the dropouts are a material that canb e safely bent, those same tools make it child's play. It's been a while since I last paid a hop but I doubt it will cost you much more that $25 and they will tell you that they are now aligned or need to be replaced (depending on the type).

If your dropouts are out of alignment, you are going to go through axles fast.

Ben
79pmooney is offline  
Old 05-14-17, 02:02 PM
  #3  
CliffordK
Senior Member
 
CliffordK's Avatar
 
Join Date: Nov 2014
Location: Eugene, Oregon, USA
Posts: 27,319
Mentioned: 216 Post(s)
Tagged: 0 Thread(s)
Quoted: 17219 Post(s)
Liked 3,963 Times in 2,943 Posts
Old MTB with a freewheel?
Bent axles are COMMON.

It really depends on how bad it is, and how much it was ridden with play in the axle.

Get a new axle with new cones and all the parts. Usually about the same price as just the axle. If the cones are bad, then it wouldn't hurt to also replace the bearings. Are they silver, shiny? Also check the races inside the hub.

In really bad cases, the grease seals can also be destroyed.
CliffordK is offline  
Old 05-14-17, 02:18 PM
  #4  
xenologer
Senior Member
 
Join Date: Aug 2008
Posts: 2,589
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 239 Post(s)
Likes: 0
Liked 7 Times in 7 Posts
Change the entire hub and cogs for a FreeHub and Cassette
never break/bend another axle again.

you can see a comparison of two here
https://www.sheldonbrown.com/free-k7.html
xenologer is offline  
Old 05-14-17, 07:31 PM
  #5  
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
Originally Posted by xenologer View Post
Change the entire hub and cogs for a FreeHub and Cassette
never break/bend another axle again.

you can see a comparison of two here
https://www.sheldonbrown.com/free-k7.html
Correct answer
operator is offline  
Old 05-16-17, 09:28 AM
  #6  
Tahoon
Junior Member
Thread Starter
 
Join Date: May 2017
Posts: 8
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Thanks all for your useful replies.

i can't find the axe bending is huge but that limited to my eyes, but one of the cone deformation is significantly weird the ball bearing made a new groove, the other cone looks nomal.

i bought it bent that way and seller didn't expose that, but i guess this had been old due to that weird cone deformation.

i got another axe with cones.
But do i need to change the cogs; it's a shimano freewheel TZ21 and i can't see any deformation on the smallest cog ?

I couldn't put link for the picture of the cone but it's like a new angled circle had been created by the bearing due to this bend; ofcorse the bearing lock is not ok
Tahoon is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
prairiepedaler
Bicycle Mechanics
6
10-06-19 07:46 AM
awunder
Bicycle Mechanics
18
03-06-14 12:30 AM
xn7
Classic & Vintage
12
11-16-11 08:55 AM
Sashko
Bicycle Mechanics
14
01-07-11 11:28 PM
chadwebster
Bicycle Mechanics
5
07-16-10 03:16 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


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.