Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  

Go Back   > >

Mountain Biking Mountain biking is one of the fastest growing sports in the world. Check out this forum to discuss the latest tips, tricks, gear and equipment in the world of mountain biking.

User Tag List

Thread Tools Search this Thread
Old 10-07-05, 06:19 PM   #1
ec velo
Thread Starter
Join Date: Jul 2004
Location: eau claire, wi
Bikes: XC: PUSS; Winter Beater: GT avalanche SS; Jump: Transition Trail or Park; Fixie: Steamroller
Posts: 179
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
What's up with so many different axle sizes?

I was just checking out different hubs on the web and have become somewhat confused.
I've seen 10mm QR, 10mm thru, 11mm thru, 12mm thru, 20mm thru, and even 24mm QR.
OK, the 20mm and 24mm I understand, but the 10, 11, 12 have got me stumped.
Are dropouts specific to a certain size? Can you put a 11mm in a 10mm dropout or vice versa?
Why isn't there some standard?

Please help me make sense of it all.
sheba is offline   Reply With Quote
Old 10-07-05, 08:11 PM   #2
MasterSezFaster's Avatar
Join Date: Jul 2005
Location: Amongst the hills in So.Cal.
Bikes: Scott Gambler, Scott Ransom, Bianchi C2C 928
Posts: 391
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
A standard drop out (most mountain bikes) are 10mm and will accept a 10mm weather it be a qr or through axle. I have not seen any 11mm on a mountain bike so you should not need one. Some mountain bikes will have dropouts for 12mm, 15mm and even 20mm on the rear (very few though and the hubs are gonna run you 300$+ for a 20mm rear ).

You know what a qr (quick release) is, your typical wheel/hub with the lever that locks the wheel to the dropout which has an opening to slide the axle in. A through axle is designed for dropouts that are closed, meaning have no way to put an axle in other then (hence the name) through and they are bolt-ons.

MasterSezFaster is offline   Reply With Quote

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 11:07 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.
  • Ask a Question
    get answers from real people!
Click to start entering your question.