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




Post new topic Reply to topic  [ 8 posts ] 
Author Message
PostPosted: Sat Jan 25, 2014 6:11 pm 
Offline
User avatar

Joined: Sat Jan 03, 2009 9:43 pm
Posts: 2838
Location: Canada
having an issue here.

Im using the new shimano m987 brakes with a shimano brake adapter. Can it be possible the adaptor is not compatible? I know it is m985 compatible...

the rear wheel, when installed, will have the rotor rub in the caliper, major rub. I am using a 160mm adaptor and 160mm rotor. What the heck is wrong here?

Image

Image

_________________
My steel XPREZO 29er race bike
­Twitter


Top
 Profile  
 
Posted: Sat Jan 25, 2014 6:11 pm 


Top
  
 
PostPosted: Sat Jan 25, 2014 6:40 pm 
Offline

Joined: Sun Nov 14, 2010 10:25 pm
Posts: 464
same problem here on lefty with avid g3 rotor and m820 saint's and shimano adapter.
Solved it by putting a washer in between the caliper and adapter. I'd consider this a temporary hackjob but would like to know the cause and solution.

_________________
    2011 Cannondale Flash F1
      2010 Cannondale Caad9
        2000 Cannondale Caad 4 aero
          1999 Cannondale Caad1
            ???? Concorde SS


Top
 Profile  
 
PostPosted: Sat Jan 25, 2014 8:02 pm 
Offline
User avatar

Joined: Sat Jan 03, 2009 9:43 pm
Posts: 2838
Location: Canada
I put a titanium spacer between the caliper and adaptor, seems to do the work just fine. Though I don't consider it an ideal solution.

_________________
My steel XPREZO 29er race bike
­Twitter


Top
 Profile  
 
PostPosted: Sat Jan 25, 2014 9:03 pm 
Offline

Joined: Fri May 02, 2008 5:39 pm
Posts: 416
Location: Tropical Wales
I've used different brand adapters in the past and all seem to raise the front and rear by different amounts. I would have thought they should be standard but they don't seem to be. IIRC the KCNC adapter raised the caliper more than Shimano or Hayes adapters I had lying around. Might be worth trying a different brand adapter perhaps?


Top
 Profile  
 
PostPosted: Sat Jan 25, 2014 9:06 pm 
Offline
User avatar

Joined: Sat Jan 03, 2009 9:43 pm
Posts: 2838
Location: Canada
Thanks Dan

do you think the washer can suffice?

If using a washer under the lower caliper/adaptor bolt, should I also use one on the top bolt to level off the caliper? I think it would push it further out, so far the caliper is not rubbing anymore with the titanium washer under the lower caliper bolt...

_________________
My steel XPREZO 29er race bike
­Twitter


Top
 Profile  
 
PostPosted: Sat Jan 25, 2014 11:29 pm 
Offline
User avatar

Joined: Thu Oct 26, 2006 8:54 pm
Posts: 366
Location: USA
I don't think using washers is that big a deal, heck Avid supply a bunch of their brakes with multiple convex-concave washers to allow adjustment of the calliper's angle...
If it were me though I'd definitely want to do it symmetrically, ie have an equally think washer under each bolt. Otherwise the calliper is going to be bending the adapter a bit when you tighten it down. Probably not a big deal, just doesn't seem optimal.
If adding a second washer "pushes it too far out", I'd say you should find some thinner washers.
In terms of what is "too far", I think your limit ought to be when the edge of the brake pad reaches the edge of the rotor - you don't want some of the pad hanging off the edge of the rotor or it'll impact performance and likely cause noise.

_________________
Enjoying my Funk


Top
 Profile  
 
PostPosted: Sat Jan 25, 2014 11:39 pm 
Offline

Joined: Fri May 02, 2008 5:39 pm
Posts: 416
Location: Tropical Wales
I agree with dwaharvey's suggestion. I wouldn't be too worried using washers but would want the same thickness washers with each caliper bolt. You can get a big bag of Hope branded washers of various thicknesses in the right size which might be the best bet.


Top
 Profile  
 
Posted: Sat Jan 25, 2014 11:39 pm 


Top
  
 
PostPosted: Thu Feb 06, 2014 10:40 pm 
Offline

Joined: Thu Jan 13, 2011 4:04 pm
Posts: 508
Location: Sunny UK
as already stated, washers are of no concern as Avid use them, and best to use one between adatper and calliper. you can buy shims = thin washers that are used to centralise IS brake callipers.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 8 posts ] 


Who is online

Users browsing this forum: Baidu [Spider] and 8 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. Zipp 404 Firecrest - brake rubbing

in Everything wheels

Kermithimself

8

897

Wed May 15, 2013 3:39 am

Blitzenbuddy View the latest post

There are no new unread posts for this topic. Dura Ace 9000 Front Mech Rubbing - Hair being pulled out now

[ Go to page: 1, 2 ]

in Road

ADP

18

2578

Sat Jun 08, 2013 2:27 am

durianrider View the latest post

There are no new unread posts for this topic. Rotor 3D+ on a PF86 frame with Rotor BB cups

in Road

Omiar

5

1257

Mon Jun 10, 2013 12:37 pm

Omiar View the latest post

There are no new unread posts for this topic. Rotor Flow vs Rotor 3D+ 2014

in Road

IchDien

8

1382

Thu Jan 16, 2014 7:15 pm

IchDien View the latest post

There are no new unread posts for this topic. KCNC C7 Brake Caliper

in Road

Doyler

3

556

Thu Jul 04, 2013 11:56 am

Doyler View the latest post


It is currently Fri Apr 18, 2014 5:01 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