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

Thru Axle Thread Issue

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.

Thru Axle Thread Issue

Old 04-22-19, 09:22 PM
  #1  
mtn_cyclist
Senior Member
Thread Starter
 
Join Date: Sep 2016
Location: Westminster, CO
Posts: 80

Bikes: Motobecane Fantom Cross Ti, Litespeed Obed, Fandango DC9 tandem, Motobecane Fantom Boost Ti

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 27 Post(s)
Liked 11 Times in 7 Posts
Thru Axle Thread Issue

I'm building up a boost spaced mtb. I have a DT Swiss 12x148 thru axle for the rear wheel. It won't screw into the derailleur hanger threads so I assume the thread pitches are different. What do I need to know about this? Thanks!
mtn_cyclist is offline  
Old 04-22-19, 10:34 PM
  #2  
jimc101
Senior Member
 
Join Date: Oct 2007
Location: West Yorkshire, United Kingdom
Posts: 5,630
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 381 Post(s)
Liked 37 Times in 34 Posts
What frame is it? as this will define the thread needed/brand/model needed on the axle for your frame, and why can't you use the axle that came with the bike, at least you will know that this fits?
jimc101 is offline  
Old 04-22-19, 11:27 PM
  #3  
ThermionicScott 
working on my sandal tan
 
ThermionicScott's Avatar
 
Join Date: Aug 2011
Location: CID
Posts: 20,291

Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers)

Mentioned: 88 Post(s)
Tagged: 0 Thread(s)
Quoted: 2847 Post(s)
Liked 844 Times in 586 Posts
Derailleur hanger threads are 10x1mm. What were you expecting to learn by trying to thread a thru-axle into it?
__________________
Originally Posted by chandltp View Post
There's no such thing as too far.. just lack of time
Originally Posted by noglider
People in this forum are not typical.
RUSA #7498
ThermionicScott is offline  
Old 04-23-19, 03:13 AM
  #4  
dsaul
Senior Member
 
Join Date: Jan 2013
Location: South Jersey
Posts: 1,930
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 580 Post(s)
Liked 444 Times in 303 Posts
There are three possible thread pitches for a 12mm rear thru axle. 12 x 1, 12 x 1.5 and 12 x 1.75. There are also varying lengths based on what standard the frame manufacturer used. All "boost" frames do not take the same length axle.

All About Thru Axles - Fairwheel Bikes Blog
dsaul is offline  
Likes For dsaul:
Old 04-23-19, 03:18 AM
  #5  
dsaul
Senior Member
 
Join Date: Jan 2013
Location: South Jersey
Posts: 1,930
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 580 Post(s)
Liked 444 Times in 303 Posts
Originally Posted by ThermionicScott View Post
Derailleur hanger threads are 10x1mm. What were you expecting to learn by trying to thread a thru-axle into it?
A lot of thru axle frames have the axle thread integrated into the derailleur hanger and it does double duty as both the hanger and the thru axle nut.
dsaul is offline  
Old 04-23-19, 07:45 AM
  #6  
ThermionicScott 
working on my sandal tan
 
ThermionicScott's Avatar
 
Join Date: Aug 2011
Location: CID
Posts: 20,291

Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers)

Mentioned: 88 Post(s)
Tagged: 0 Thread(s)
Quoted: 2847 Post(s)
Liked 844 Times in 586 Posts
Originally Posted by dsaul View Post
A lot of thru axle frames have the axle thread integrated into the derailleur hanger and it does double duty as both the hanger and the thru axle nut.
Oh, the mount for the derailleur hanger? Got it.
__________________
Originally Posted by chandltp View Post
There's no such thing as too far.. just lack of time
Originally Posted by noglider
People in this forum are not typical.
RUSA #7498
ThermionicScott is offline  
Old 04-23-19, 09:16 AM
  #7  
Metaluna
Senior Member
 
Join Date: Aug 2005
Location: New Hampshire
Posts: 1,221

Bikes: Niner RLT 9 RDO, Gunnar Sport, Soma Saga, Workswell WCBR-146

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 114 Post(s)
Liked 19 Times in 19 Posts
Originally Posted by dsaul View Post
There are three possible thread pitches for a 12mm rear thru axle. 12 x 1, 12 x 1.5 and 12 x 1.75. There are also varying lengths based on what standard the frame manufacturer used. All "boost" frames do not take the same length axle.

All About Thru Axles - Fairwheel Bikes Blog
In addition to overall length, you also need to match the length of the threaded section of the axle. Too short is bad as the axle threads could bottom out before the hub is fully clamped in the frame. I don't know what happens if the threaded length is too long. It's probably okay up to a point.

At least, that's the way it works for non-boost frames. Maybe the industry did a better job of standardization with boost, but I doubt it.
Metaluna is offline  
Old 04-24-19, 06:26 AM
  #8  
Sean Rogers
Junior Member
 
Join Date: Apr 2019
Location: San Francisco, CA
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Hey, I am looking for the same solution. Have you got any reliable person for this job?
Sean Rogers is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
prairiepedaler
Bicycle Mechanics
6
10-06-19 07:46 AM
El Gato27
Bicycle Mechanics
5
04-05-19 10:07 AM
FixxerUpper
Bicycle Mechanics
4
09-07-13 12:07 PM
Turtle Speed
Bicycle Mechanics
4
05-17-13 12:43 PM
RobE30
Classic & Vintage
3
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


Thread Tools
Search this Thread

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

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.