HOT: Active* forum members generally gain 5% discount at starbike.com store!
Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Blog NEW Articles FAQ Contact About




Post new topic Reply to topic  [ 7 posts ] 
Author Message
PostPosted: Sun Aug 24, 2014 5:22 pm 
Offline

Joined: Fri Jun 03, 2011 6:30 pm
Posts: 50
Hi

Can anyone help with why the lockring keeps loosening? I torqued it up to spec and the bike is a month old. argh...


Sent from my iPhone using Tapatalk


Top
 Profile  
 
PostPosted: Sun Aug 24, 2014 8:51 pm 
Offline

Joined: Fri Oct 28, 2011 3:25 am
Posts: 907
Location: United Kingdom of Great Britain and Northern Ireland
1/ Clean up and check both sets of threads for damage.

2/ Try another lockring. Could just be that the threads were cut poorly, but probably not.

3/ Exceed stated torque until it holds and/or use threadlock.


Top
 Profile  
 
Posted: Sun Aug 24, 2014 8:51 pm 
  • 15.90 € (including 19% VAT)
  • 37 components


Top
  
 
PostPosted: Mon Aug 25, 2014 7:42 pm 
Offline

Joined: Fri Jun 03, 2011 6:30 pm
Posts: 50
Over torqued slightly now and all threads checked and ok. Fingers crossed.


Sent from my iPhone using Tapatalk


Top
 Profile  
 
PostPosted: Tue Aug 26, 2014 2:30 am 
Offline

Joined: Fri Oct 28, 2011 3:25 am
Posts: 907
Location: United Kingdom of Great Britain and Northern Ireland
Assuming here that the cassette body has not come loose. When that happens the cassette lockring can be tight, but if you pull on the sprockets they can shift sideways so that the lockring contacts with the RH dropout.


Top
 Profile  
 
PostPosted: Tue Aug 26, 2014 5:25 am 
Offline
User avatar

Joined: Wed Oct 20, 2010 5:56 am
Posts: 333
If you've over-torqued the lock ring, next time cassette is apart check if the spacer between 6 & 7 cogs is busted. Mine was the first time I took it apart to clean (having never torqued it myself), so shop warrantied it and said Campy changed the spec from 40 Nm to 15 because of this (but I've never read that anywhere else so shop could have been BS-ing me).

There are two different 12T sprockets, one for cassettes starting with 12T and a different one that goes below the 11T. One has "knurling" (for the lock ring) and the other doesn't. There also appear to be two different lock rings in the parts catalog (http://www.campagnolo.com/media/files/0 ... part_B.pdf) - CS-112, and CS-111 "for Z 11", which I presume means 11T as the first sprocket. They certainly look different in the diagrams. I don't know if the cassette can even be assembled properly with the wrong 12T or wrong lock ring, but maybe there was some mix-up with these?

You don't state what your ratio is but if it's 12-something and you don't have the knurled 12T I can see where the lock ring might loosen. I'm not a mechanic, just speculating.


Top
 Profile  
 
PostPosted: Tue Aug 26, 2014 11:36 am 
Offline
User avatar

Joined: Fri Dec 11, 2009 10:38 pm
Posts: 1126
Location: Toronto
certain lack of info.

was this a brand new, never messed with, bike and cassette? are you sure?

which cassette is it?

how did you know it was loose?

are you sure it's not a loose freehub?

what torque spec did you use?

have you checked the spacers?

I have always used gentle torque on my lockrings and never a problem.

I have a ham-fisted friend who took delivery of a brand new Campy wheelset, overtorqued the lockring, stripped the threads, and was then in immediate need of a new freehub. Don't be that guy.

_________________
There's sometimes a buggy.
How many drivers does a buggy have?

One.

So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.

http://www.youtube.com/watch?v=GekiIMh4ZkM


Top
 Profile  
 
Posted: Tue Aug 26, 2014 11:36 am 
  • 15.90 € (including 19% VAT)
  • 37 components


Top
  
 
PostPosted: Tue Aug 26, 2014 11:43 am 
Offline
User avatar

Joined: Wed Jul 13, 2005 10:51 am
Posts: 1051
Location: Sydney, Australia
There are definitely different lock rings for different campagnolo cassettes.

Answers to the above will help.

_________________
You can't be a real country unless you have a beer and an airline. It helps if you have some kind of a football team, or some nuclear weapons, but at the very least you need a beer.
-- Frank Zappa


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 


Who is online

Users browsing this forum: athletic91, Bing [Bot], Exabot [Bot], Google [Bot], Google Adsense [Bot], thprice and 35 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. Charger problem - Campagnolo EPS.

in Road

Nejmann

8

992

Tue May 20, 2014 12:24 am

choctop View the latest post

There are no new unread posts for this topic. Campagnolo Shamal Ultra Clinchers - Problem

in Road

smootherider100

6

1593

Fri Apr 04, 2014 2:52 pm

apb27 View the latest post

There are no new unread posts for this topic. Specialized Quarq Lockring Tool

in Road

NiFTY

1

327

Wed Jan 22, 2014 6:40 pm

aaric View the latest post

There are no new unread posts for this topic. SRAM crank extraction woes, lockring comes out

in Road

n808

5

474

Tue May 27, 2014 8:44 am

Andrew69 View the latest post

There are no new unread posts for this topic. Di2 firmware problem

in Road

rokkstar

12

730

Thu Aug 28, 2014 4:03 am

tnc1970 View the latest post


It is currently Sat Dec 20, 2014 2:49 pm

All times are UTC + 1 hour




Advertising   –  FAQ   –  Contact   –  Convert   –  About

© Weight Weenies 2000-2013
hosted by starbike.com


How to get rid of these ads? Just register!


Powered by phpBB