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  [ 4 posts ] 
Author Message
 Post subject: Crank options for BB90?
PostPosted: Fri Apr 22, 2011 3:47 pm 
Offline

Joined: Wed Jun 27, 2007 12:18 am
Posts: 186
I have a friend with a Trek road bike, which uses BB90. The bike came with an Ultegra triple, but she really does not need the triple and would prefer a compact. What kind of crank do I have to buy that will work with the BB90 bearings already installed? Is there an Ultegra BB90 version?


Top
 Profile  
 
 Post subject: Crank options for BB90?
Posted: Fri Apr 22, 2011 3:47 pm 


Top
  
 
PostPosted: Fri Apr 22, 2011 4:12 pm 
Offline

Joined: Sun May 16, 2010 7:28 pm
Posts: 533
My understanding of BB90 is that they've effectively taken external bearings from outside of a standard threaded bottom bracket and made them internal. So any crank that would work with a standard threaded bottom bracket shell should also work with BB90. Where you get into trouble is that any crank with an oversized spindle (BB30 and some boutique brands) will not fit.
So to answer your question, yes, a standard ultegra compact double should fit just fine. As should cranksets from SRAM and campy.


Top
 Profile  
 
PostPosted: Fri Apr 22, 2011 5:45 pm 
Offline

Joined: Thu Dec 09, 2004 1:57 pm
Posts: 214
The bearings your friend currently has will only work with Shimano 10 (all Shimano 10) cranks or other 24mm spindle cranks (Rotor, etc.). While BB90 works with Campy and SRAM as well, you'd need the proper BB90 bearings for those cranks (BB90/SRAM, BB90/Campy). So if your friend wants to use the same bearings that are already installed, she would have to stick with Shimano 10 or Rotor, etc.


Top
 Profile  
 
PostPosted: Fri Apr 22, 2011 5:54 pm 
Offline

Joined: Mon Oct 12, 2009 6:36 pm
Posts: 246
Any Shimano crank will fit.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 


Who is online

Users browsing this forum: Baidu [Spider], campbellrae, Google Adsense [Bot], reeper250 and 51 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. Shimano FC-9000 crank in Trek BB90 bottom bracket fitment

in Road

Gearhead65

3

251

Tue Mar 04, 2014 9:04 pm

FIJIGabe View the latest post

This topic is locked, you cannot edit posts or make further replies. crank options for BB30 supersix himod and Ultegra di2?

in Road

theStig

1

554

Thu May 02, 2013 7:22 am

Omiar View the latest post

There are no new unread posts for this topic. Nice cranksets for BB90 Madone and Osymetric rings

in Road

Kayrehn

0

591

Fri Apr 26, 2013 4:48 am

Kayrehn View the latest post

There are no new unread posts for this topic. replacement crank decals? Or sprucing up a plain crank

in Road

davidalone

2

373

Tue Mar 11, 2014 8:52 am

davidalone View the latest post

There are no new unread posts for this topic. CAAD10 headset options?

in Road

drainyoo

10

1190

Sat Jul 27, 2013 4:09 am

drainyoo View the latest post


It is currently Sun Apr 20, 2014 12:14 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