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: Tue May 01, 2012 2:26 pm 
Offline

Joined: Tue Dec 09, 2008 6:01 pm
Posts: 44
Hi

I was just wondering if anyone knew if the bearings in the freehub body of the current Fulcrum Racing Zero (USB bearings) are ceramic. Or are only the main bearings in the hub ceramic?

Thanks in advance

Darren


Top
 Profile  
 
PostPosted: Tue May 01, 2012 11:03 pm 
Offline

Joined: Mon Jun 23, 2008 8:52 am
Posts: 597
encomium wrote:
Hi

I was just wondering if anyone knew if the bearings in the freehub body of the current Fulcrum Racing Zero (USB bearings) are ceramic. Or are only the main bearings in the hub ceramic?

Thanks in advance

Darren


Only hub bearings are ceramic ones.


Top
 Profile  
 
Posted: Tue May 01, 2012 11:03 pm 


Top
  
 
PostPosted: Tue May 01, 2012 11:20 pm 
Offline
Tubbie Guru

Joined: Tue May 03, 2005 2:20 am
Posts: 5794
Location: Belgium
Hi,

Which, between you and me, is really stupid. :( Especially so since the inner bearing of the freewheel hub is far from easy to remove as it has not been designed to be removable......

Ciao, ;)

_________________
Being a snob is an expensive hobby.


Top
 Profile  
 
PostPosted: Tue May 01, 2012 11:27 pm 
Offline

Joined: Mon Jun 23, 2008 8:52 am
Posts: 597
fdegrove wrote:
Hi,

Which, between you and me, is really stupid. :( Especially so since the inner bearing of the freewheel hub is far from easy to remove as it has not been designed to be removable......

Ciao, ;)


I do not get what you are trying to say:-( I just said that only hub bearings are ceramic. One of the reason why I think so is that upgrade ceramic kit contains only of hub bearings.
And, could anybody tell me the reason for ceramic bearings in freehub body?


Top
 Profile  
 
PostPosted: Tue May 01, 2012 11:42 pm 
Offline
Tubbie Guru

Joined: Tue May 03, 2005 2:20 am
Posts: 5794
Location: Belgium
Hi,

The wheels' bearings, USB as the TS stated, are ceramic. The freewheel's bearings aren't.

The reason why these should also be made out of ceramic is that as soon as the freewheel is seeing some tension (a chain and rear derrie spring suffice) those bearings inside the freehub are as much a source of friction as any other bearing. Hence...

Ciao, ;)

_________________
Being a snob is an expensive hobby.


Top
 Profile  
 
PostPosted: Tue May 01, 2012 11:55 pm 
Offline

Joined: Wed Jan 10, 2007 10:56 pm
Posts: 634
Location: Canada
Plus, in my experience, these are the bearings that fail first on campy wheels.


Top
 Profile  
 
PostPosted: Wed May 02, 2012 2:37 am 
Offline

Joined: Tue Dec 09, 2008 6:01 pm
Posts: 44
thanks for the answers. i guess the load/drag on the freehub bearings are not as high as the main bearings as they don't bear the full weight/load and also only applicable when freewheeling so that's probably why it wasn't worth the extra cost.


Top
 Profile  
 
Posted: Wed May 02, 2012 2:37 am 


Top
  
 
PostPosted: Wed May 02, 2012 5:44 am 
Offline
Shop Owner

Joined: Sat Jun 13, 2009 4:02 am
Posts: 1975
Location: NoVA/DC
encomium wrote:
i guess the load/drag on the freehub bearings are not as high as the main bearings as they don't bear the full weight/load and also only applicable when freewheeling

campy freehub bearings ride directly on the axle. they are stationary when coasting, spinning when pedalling


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], beanbiken, BeeSeeBee, drider85, HammerTime2, Nismo4x4, tinozee, Yahoo [Bot] and 58 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. New Fulcrum Racing Zero - Freehub material

in Road

excremanwu

4

548

Tue Jul 29, 2014 1:08 pm

Stolichnaya View the latest post

There are no new unread posts for this topic. Fulcrum Racing 5 freehub play

in Road

mogwaiboi

4

561

Thu Apr 10, 2014 12:37 pm

martinko View the latest post

There are no new unread posts for this topic. New Fulcrum Racing Zero Carbon's?

in Road

morrisond

3

1086

Sat Aug 09, 2014 2:20 pm

5 8 5 View the latest post

There are no new unread posts for this topic. Fulcrum Racing Zero Spokes

in Road

rg255

3

760

Wed Mar 26, 2014 10:00 pm

neeb View the latest post

There are no new unread posts for this topic. Campagnolo Shamal Ultra Mega G3 vs Fulcrum Racing Zero

[ Go to page: 1, 2 ]

in Road

rg255

16

3950

Fri Mar 28, 2014 10:01 pm

sawyer View the latest post


It is currently Mon Nov 24, 2014 10:44 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