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  [ 12 posts ] 
Author Message
PostPosted: Tue May 01, 2012 12:04 pm 
Offline

Joined: Thu Jan 13, 2011 4:04 pm
Posts: 508
Location: Sunny UK
Is the Truvativ Noir GXP cank and BB cups compatible with Shimano Hollowtech II?

I measured both to have 24 mm diameter spindle so looks like they are but anyone mixed both e.g. (Shimano BB cups with the Truvativ crank)?


Last edited by 02GF74 on Wed May 02, 2012 1:15 pm, edited 1 time in total.

Top
 Profile  
 
PostPosted: Tue May 01, 2012 12:47 pm 
Offline
User avatar

Joined: Mon Nov 01, 2004 3:13 pm
Posts: 586
Location: €pe
No, they are not compatible AFAIK.

_________________
my plastic bikes, 29ers & stable of old steel


Top
 Profile  
 
Posted: Tue May 01, 2012 12:47 pm 


Top
  
 
PostPosted: Tue May 01, 2012 1:04 pm 
Offline

Joined: Mon Sep 27, 2010 8:38 am
Posts: 497
Truvativ/SRAM tapers to 22mm on the NDS.


Top
 Profile  
 
PostPosted: Tue May 01, 2012 1:43 pm 
Offline

Joined: Thu Jan 13, 2011 4:04 pm
Posts: 508
Location: Sunny UK
ricerocket wrote:
Truvativ/SRAM tapers to 22mm on the NDS.


hmmm, I didn't spot that, 24 to 22 mm should be quite noticeable, a 1 mm step :shock: ; best photo I could find on t'web is this:

Image
and another, since we all like pictures, right? :P
Image

.... and so my confusion continues .... :(

maybe it is the "lands" on the spindle that are in different places for the two BBs?


Top
 Profile  
 
PostPosted: Tue May 01, 2012 2:04 pm 
Offline

Joined: Sat Jun 06, 2009 7:28 am
Posts: 475
why would you be confused? you have been given the correct answer. They are not compatible.


Top
 Profile  
 
PostPosted: Tue May 01, 2012 2:09 pm 
Offline

Joined: Thu Jan 13, 2011 4:04 pm
Posts: 508
Location: Sunny UK
.... because if they are the same spindle diameter, how come they don't fit?


Top
 Profile  
 
PostPosted: Tue May 01, 2012 2:48 pm 
Offline

Joined: Sun Feb 05, 2012 7:00 am
Posts: 46
Location: Gold Coast, AUS
02GF74 wrote:
.... because if they are the same spindle diameter, how come they don't fit?

think you are missing the point, they are only the same size on the drive side, the NDS is 22mm on GXP.
http://www.bikyle.com/bottom_brackets.htm


Top
 Profile  
 
PostPosted: Tue May 01, 2012 9:04 pm 
Offline

Joined: Sat May 07, 2011 12:23 am
Posts: 156
The NDS bearing contacts the splined portion of the spindle, not the smooth section. You can actually see the step in the pictures you've provided on the splines.

As stated repeatedly above, they definitely are not compatible.


Top
 Profile  
 
PostPosted: Wed May 02, 2012 11:28 am 
Offline

Joined: Thu Jan 13, 2011 4:04 pm
Posts: 508
Location: Sunny UK
ok, sorry if I appear to be non trusting but it is my nature to question whenever I see something but am told something else so I like to understand. :?

a close look at the chainset indeed showed polishing on the splined section where the ND bearing made contact, not the way I would have designed it but ......

I wonder if making a shim form a stip of 1 mm thick aluminium would work??? :noidea:


Top
 Profile  
 
PostPosted: Wed May 02, 2012 1:04 pm 
Offline

Joined: Sun Feb 05, 2012 7:00 am
Posts: 46
Location: Gold Coast, AUS
GXP BB is like $20-$30...


Top
 Profile  
 
PostPosted: Wed May 02, 2012 1:49 pm 
Offline

Joined: Sun Nov 26, 2006 8:59 pm
Posts: 43
Location: UK
Hope make an adaptor so that you can use Truvativ / SRAM GXP cranks with their own BB, maybe one of those would fit a Shimano BB as well?


Top
 Profile  
 
Posted: Wed May 02, 2012 1:49 pm 


Top
  
 
PostPosted: Thu May 03, 2012 4:40 am 
Offline
User avatar

Joined: Tue Mar 08, 2005 10:01 pm
Posts: 661
Location: New Hampshire
They're incompatible, and that's that. Just buy a new BB, they're cheap. Don't futz around with shims or adapters, get the parts that work.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 12 posts ] 


Who is online

Users browsing this forum: Google [Bot] and 7 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 
This topic is locked, you cannot edit posts or make further replies. Shimano Hollowtech II compatability

in Road

naylor343

0

259

Tue Oct 15, 2013 10:38 pm

naylor343 View the latest post

There are no new unread posts for this topic. Athena EPS - Battery V2 compatible with V1

[ Go to page: 1, 2 ]

in Road

Nejmann

17

906

Wed Nov 13, 2013 5:10 pm

ferrarista View the latest post

There are no new unread posts for this topic. Specialties TA Syrius not compatible with 11-speed DI2?

in Road

bonafide

0

98

Thu Mar 06, 2014 3:36 pm

bonafide View the latest post

This topic is locked, you cannot edit posts or make further replies. What is the lightest crankset compatible with a BSA frame?

in Road

dwmark2

4

731

Tue Nov 12, 2013 11:42 pm

prendrefeu View the latest post

There are no new unread posts for this topic. Dura-Ace Di2 9070 - compatible with 10-speed?

[ Go to page: 1, 2, 3 ]

in Road

martinSL

33

4445

Sun Nov 10, 2013 8:12 pm

Pokerface07 View the latest post


It is currently Sat Apr 19, 2014 9:06 am

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