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  [ 9 posts ] 
Author Message
 Post subject: Sram/Truvativ GXP BB
PostPosted: Mon Feb 12, 2007 9:08 pm 
Offline

Joined: Thu Dec 09, 2004 1:57 pm
Posts: 216
Does anyone know what size bearings Sram/Truvativ uses on their new GXP BB? I read somewhere that they use 2 different sizes but I can't find anything that says for sure what the two sizes are.

Thanks.


Last edited by rbrtwyn on Mon Feb 12, 2007 9:28 pm, edited 1 time in total.

Top
 Profile  
 
 Post subject:
PostPosted: Mon Feb 12, 2007 9:17 pm 
Offline

Joined: Thu Oct 06, 2005 4:17 am
Posts: 1003
As the two openings are of different sizes, yes, I believe the bearings are also of different sizes.


Top
 Profile  
 
 Post subject:
Posted: Mon Feb 12, 2007 9:17 pm 


Top
  
 
 Post subject:
PostPosted: Mon Feb 12, 2007 10:38 pm 
Offline

Joined: Thu Dec 09, 2004 1:57 pm
Posts: 216
Thanks. Does anyone know what the 2 bearing sizes are?


Top
 Profile  
 
 Post subject:
PostPosted: Tue Feb 13, 2007 4:17 am 
Offline
User avatar

Joined: Wed Oct 27, 2004 3:31 am
Posts: 228
Location: CALIFORNIA
As far as I know ,they are the same as Shim and FSA.Race Face uses two different sizes.The size should be 37x25x7mm.


Top
 Profile  
 
 Post subject:
PostPosted: Tue Feb 13, 2007 4:50 am 
Offline
User avatar

Joined: Mon Jun 26, 2006 4:39 am
Posts: 1688
Location: Los Angeles=Hills, Smog
I can help..."ish". I pulled my extra bottom bracket out of the tool box & took some measurements & did some inspecting...short of pulling the bearings. Well, Truvativ are sly. They have their own dust covers on the bearings with no size defining markings. Here are the measurements I took with my Calipers.
The 2 bearings look to be identical, however the non drive side bearing has a sleeve in it to make the ID Smaller. Here are the approx measurements...
OD 1.45"
ID .940"
ID w/ Sleeve .870" (non drive side)
Width .35"
Sleeve Width .50

Hope this helps


Top
 Profile  
 
 Post subject:
PostPosted: Tue Feb 13, 2007 5:04 am 
Offline

Joined: Thu Feb 09, 2006 4:40 pm
Posts: 706
Just got burned by this the past month. Same bearing but, as stated above me, the non-drive has a pressed in sleeve that forces you to buy the Truvative/Sram bearings/cups.

Really no way around it, as there is slop on the spindle otherwise.


Top
 Profile  
 
 Post subject:
PostPosted: Tue Feb 13, 2007 5:06 am 
Offline
User avatar

Joined: Mon Jun 26, 2006 4:39 am
Posts: 1688
Location: Los Angeles=Hills, Smog
Looks like it is a "6805" by matching my measurements to the closest bearing size
http://www.vxb.com/Merchant2/merchant.m ... gory_Code=


Top
 Profile  
 
 Post subject:
PostPosted: Tue Feb 13, 2007 5:10 am 
Offline
User avatar

Joined: Mon Jun 26, 2006 4:39 am
Posts: 1688
Location: Los Angeles=Hills, Smog
Auk wrote:
Just got burned by this the past month. Same bearing but, as stated above me, the non-drive has a pressed in sleeve that forces you to buy the Truvative/Sram bearings/cups.

Really no way around it, as there is slop on the spindle otherwise.


Why can you not press out the sleeve & repress it into the new bearing? Take it to any decent auto mechanic & he should be able to do it in a couple minutes or point you in the direction of someone with a press who can.


Top
 Profile  
 
 Post subject:
Posted: Tue Feb 13, 2007 5:10 am 


Top
  
 
 Post subject:
PostPosted: Tue Feb 13, 2007 5:50 am 
Offline

Joined: Thu Dec 09, 2004 1:57 pm
Posts: 216
Thanks for all the help. Another reason this board is the best!


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 9 posts ] 


Who is online

Users browsing this forum: Google [Bot], mdeth1313, nachtjager, prebsy, Yiannis-Super 6. and 31 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. Sram 22 and old Sram compatibility

in Road

TimmS

11

1426

Mon Feb 24, 2014 1:55 pm

tvillumsen View the latest post

There are no new unread posts for this topic. SRAM Yaw Q RINGS Help

in Road

NiFTY

5

339

Tue Sep 16, 2014 6:34 am

NiFTY View the latest post

There are no new unread posts for this topic. SRam Powerlink on DA?

in Road

addictR1

9

712

Wed Nov 20, 2013 12:46 pm

Zigmeister View the latest post

There are no new unread posts for this topic. sram red 22 2014

in Road

KTCY

2

777

Fri Apr 04, 2014 9:28 pm

ToffieBoi View the latest post

There are no new unread posts for this topic. Sram Red BB30 vs pressfit

in Road

ironman1

5

723

Sat Mar 08, 2014 8:12 am

Cosmo View the latest post


It is currently Wed Oct 01, 2014 11:54 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