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
PostPosted: Tue May 29, 2012 7:01 pm 
Offline

Joined: Sun Dec 25, 2011 3:51 am
Posts: 9
Location: Washington, DC
I am considering an upgrade on my Blue Norcross EX by swapping out the 48-34 SRAM Apex crank for a 50-34 SRAM Force crankset. If I do it, I will upgrade the bottom bracket to a BB30 as well since the frame is BB30 ready. I noticed one of the GXP BB bearings appears to be loosening a bit so I need to take it in for service anyway (500 miles on the bike). Is this upgrade worth it or a waste of money? The weight savings would be about 0.5 lbs. However, performance and stiffness wise is it worth the cost? Will the Force be more trouble free?

Thanks in advance.

_________________
2012 Blue Norcross EX, Size: ML


Top
 Profile  
 
Posted: Tue May 29, 2012 7:01 pm 


Top
  
 
PostPosted: Wed May 30, 2012 10:29 am 
Offline

Joined: Tue Aug 05, 2008 1:15 am
Posts: 156
My A bike has BB30 & B had BB30/w GXP adapter. Both had Force cranks and the frames were like yours, Norcross Exs. I really couldn't tell the difference, stiffness wise, between them; this is probably due to riding w/33mm low pressure tubs. The apparent difference was the different Q factor, w/BB30 being a narrower stance. I ended up setting both bike up w/BB30; found a deal I couldn't refuse.

I've had more trouble w/BB30 bearings than GXP. I think the GXP has much better sealing & end up lasting longer. During cross season I go through ~3-4 BBs on each of the bikes bikes... This might be due to pressure washing at races, but never had to change BBs, this much, w/shimano or GXP threaded cups.


Top
 Profile  
 
PostPosted: Wed May 30, 2012 2:41 pm 
Offline

Joined: Sun Dec 25, 2011 3:51 am
Posts: 9
Location: Washington, DC
Thanks availpunk,
I am starting to feel like its not worth it in terms of trouble free operation and the cost per gram sense especially if I stay with a GXP BB. Leaning toward using the Apex until it wears out or fails, then consider lighter, high end parts.

_________________
2012 Blue Norcross EX, Size: ML


Top
 Profile  
 
PostPosted: Wed Aug 08, 2012 5:32 am 
Offline

Joined: Sat Feb 02, 2008 5:57 pm
Posts: 74
The Apex is a good crankset –– not quite the lightest, but maybe that's a decent thing in CX. If you're feeling like a hustler, I would just leapfrog Force and go to Red if I were in your shoes. All the SRAM factory guys in Chicago, where I used to live, were using Red cranks on their personal bikes.


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


Who is online

Users browsing this forum: No registered users and 5 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 Force chainrings on a Red Crankset

in Road

Grimpeur

5

638

Sat Nov 02, 2013 10:21 pm

tk2306 View the latest post

There are no new unread posts for this topic. SRAM Force 22 Crankset, Enve Seatpost, Bars, Selle Kit Carbo

in For sale - Pictures are mandatory 22-3-13

RyanH

0

392

Fri Aug 29, 2014 5:47 am

RyanH View the latest post

There are no new unread posts for this topic. Sram quietly upgrades Apex and Rival chainrings?

in Road

athletic91

2

586

Tue Mar 18, 2014 3:58 pm

athletic91 View the latest post

There are no new unread posts for this topic. Attachment(s) Sram Red, Sram XX, Sram Force 22, Ritchey Superlogic,

in For sale - Pictures are mandatory 22-3-13

oskar

0

264

Thu Sep 11, 2014 11:09 pm

oskar View the latest post

There are no new unread posts for this topic. Crankset upgrade question for Cervelo R3

in Road

Cookiedds

11

877

Tue Jun 10, 2014 6:04 pm

GT56 View the latest post


It is currently Fri Sep 19, 2014 9:03 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