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

Go Back   > >

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.

User Tag List

Thread Tools Search this Thread
Old 03-23-09, 01:59 PM   #1
Atlanta Road Racer
Thread Starter
dgearhart's Avatar
Join Date: Jun 2008
Location: Atlanta, GA
Bikes: Specialized Tarmac SL3 will full carbon everything/everywhere and Zipp 404 tubulars for racing. Cyclocross bike is a 56cm carbon Blue CXc with carbon everywhere.
Posts: 98
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Swapping 12/25 and 12/27 Cassette Every Weekend

I typically like to race criteriums with a 12/25 Dura Ace cassette on my Zipp 404 Tubulars, but I prefer a Dura Ace 12/27 on road races the following day.


1. If I have a shimano 10spd cassette lock ring tool, can I just swap cassettes anytime without derailleur adjustments as long as my 12/25 and 12/27 both use the same spacer?

2. I notice that the lock ring makes a click sound and will not tighten further when it is tight. Is there danger in tightening the lock ring to the point of hearning or feeling that click? Am I over tightening the cassette lock ring or is that even possible? I assumed it was designed so that you can't over tighten it, but I figured that I should ask before I make an incorrect assumption and ruin something.

My goal is to just bring my rachett with the lock ring tool to every road race on Sunday and quickly swap cassettes with no further adjustments prior to racing, but I'm not sure if I can make it that simple. Thanks in advance for any clarification and/or feedback/suggestions/advice.
dgearhart is offline   Reply With Quote
Old 03-23-09, 02:09 PM   #2
Senior Member
Join Date: Feb 2005
Location: Oklahoma
Bikes: Trek 5500, Colnago C-50
Posts: 9,438
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
You should be able to change these cassettes in about 5 minutes with no adjustments needed. I've done this many times. The lockring torque specs are shown on the lockrings. It needs to be plenty tight. Looseness in the cassette cogs can damage the freehub splines. It's not necessary to use a torque wrench for this application once you have a good feel for what is "tight".

Al1943 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 09:20 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.