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




Post new topic Reply to topic  [ 5 posts ] 
Author Message
PostPosted: Fri Aug 09, 2013 8:08 am 
Offline

Joined: Tue Jul 25, 2006 11:36 pm
Posts: 46
Location: The Netherlands
Hi weenies,

I just installed a 3d+ rotor crank on my bbright bike.
I use a 53 aero noQ chainring as outer and a non aero noQ 39 chainring on the inside.

I first installed the 39 with the bolts falling inside the cutouts on the 39 ring.
I got horrible chain rub with the inside of the 53 chainring, with the chain on the 53, it rubs aginst the inside of the 39.
Ofcourse this only happened with not straight chain line.

When i turned the 39 chainring around with the bolts NOT falling in the cutouts, all problems seemed gone.

Is this normal?

I couldnt find any documentation about installing the noQ rings on the web or at the rotor website.

_________________
Carboner


Top
 Profile  
 
Posted: Fri Aug 09, 2013 8:08 am 


Top
  
 
PostPosted: Sat Aug 10, 2013 12:00 am 
Offline

Joined: Wed Jan 10, 2007 10:56 pm
Posts: 1070
Location: Canada
Its a known issue. Recent shimano chainrings (7900 onwards) have wider spacing. I've used problem solvers chainring spacers (1.2 mm) to eliminate this. Just adjust your FD stops accordingly.

_________________
My RCA


Top
 Profile  
 
PostPosted: Sat Aug 10, 2013 9:44 am 
Offline

Joined: Tue Jul 25, 2006 11:36 pm
Posts: 46
Location: The Netherlands
Ok good to know, strange thing was that the 39-27 straight chainline was really noisy.
I'll just keep the ring reversed.

_________________
Carboner


Top
 Profile  
 
PostPosted: Mon Aug 12, 2013 6:12 pm 
Offline
User avatar

Joined: Wed Mar 06, 2013 4:23 pm
Posts: 592
Location: Austin, TX
goodboyr wrote:
Its a known issue. Recent shimano chainrings (7900 onwards) have wider spacing. I've used problem solvers chainring spacers (1.2 mm) to eliminate this. Just adjust your FD stops accordingly.


goodboyr, can you elaborate on how you're spacing your rings. I recently switched to q-rings from my praxis works rings and there is a definite difference in the thickness of the rings or at least how they are spaced on the same spider. Did you have to use longer chainring bolts? While the shifting and where the FD stops are now with the q-rings, it's pretty much at the limit. It's definitely livable but I feel it could be much better with some better spacing. Thanks

_________________
My Cervelo R5
My Lynskey Helix
My MTB


Top
 Profile  
 
PostPosted: Mon Aug 12, 2013 6:20 pm 
Offline

Joined: Wed Jan 10, 2007 10:56 pm
Posts: 1070
Location: Canada
I don't have any experience with the q rings. I was answering the question for conventional non shimano rings such as "no q" rings and praxis rings. In those cases its simply a case of adding a spacer (0.6 or 1.0 mm thick) to the inside of the large ring (mating surface to crank spider) and using the existing bolts.

_________________
My RCA


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 


Who is online

Users browsing this forum: bungis, cdtf, jimborello, Sacke, srshaw, Yahoo [Bot] and 47 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. Rotor Q-rings for Campagnolo

in Road

Attermann

2

300

Thu Sep 24, 2015 5:06 am

maggierose View the latest post

There are no new unread posts for this topic. Power2max type s and rotor 3DF crankset or Rotor INPOWER

in Road

TomColnago

14

781

Tue Nov 17, 2015 6:00 pm

Mario Jr. View the latest post

There are no new unread posts for this topic. FSA Team Chain vs Dura Ace Chain

in Road

ParisCarbon

5

712

Wed Oct 14, 2015 9:38 pm

MisterMuncher View the latest post

There are no new unread posts for this topic. 10 speed chain on 11 speed chain ring Campa more noise?

in Road

Body

6

537

Thu May 14, 2015 9:59 am

Body View the latest post

There are no new unread posts for this topic. FSA N10 rings with 11s Di2?

in Road

ParisCarbon

6

213

Thu Dec 17, 2015 5:00 am

goodboyr View the latest post


It is currently Fri Feb 12, 2016 3:39 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