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
 Post subject: BB30 and moisture?
PostPosted: Mon Mar 05, 2012 8:49 pm 
Offline

Joined: Wed Dec 07, 2011 1:26 am
Posts: 414
Location: California's country side
Many of us use the freezer method on the crank spindle, wouldn't there be condensation as the crank come back to room temperature. trapped in the space between the 2 bearings?

I am referring to some of the BB30 shells are fully enclosed, although some have holes all over for Di2, those are not a concern.


Top
 Profile  
 
 Post subject: BB30 and moisture?
Posted: Mon Mar 05, 2012 8:49 pm 


Top
  
 
 Post subject: Re: BB30 and moisture?
PostPosted: Mon Mar 05, 2012 9:11 pm 
Offline

Joined: Mon Jan 24, 2011 8:09 pm
Posts: 710
PoorCyclist wrote:
Many of us use the freezer method on the crank spindle, wouldn't there be condensation as the crank come back to room temperature. trapped in the space between the 2 bearings?

I am referring to some of the BB30 shells are fully enclosed, although some have holes all over for Di2, those are not a concern.


Isn't there a hole in the bottom bracket shell to allow moisture out? Nothing is water proof, but the bearings are sealed and it shouldn't be a problem I would think?


Top
 Profile  
 
 Post subject: Re: BB30 and moisture?
PostPosted: Tue Mar 06, 2012 12:20 am 
Offline

Joined: Tue Dec 20, 2011 12:43 am
Posts: 237
Zig is correct. Most if not all BB30 shells have a drainage hole that allows for excess moisture to drain.

_________________
Cervélo S2 2012 Red
Great minds think alike... sadly, so do the mediocre ones.


Top
 Profile  
 
 Post subject: Re: BB30 and moisture?
PostPosted: Tue Mar 06, 2012 3:14 am 
Offline

Joined: Wed Dec 07, 2011 1:26 am
Posts: 414
Location: California's country side
Just looked at my BMC, 360 degrees not a hole to be found.. but the shell is machined nicely and coated with something though.


Top
 Profile  
 
 Post subject: Re: BB30 and moisture?
PostPosted: Tue Mar 06, 2012 3:17 am 
Offline

Joined: Tue Oct 30, 2007 5:02 pm
Posts: 642
If there is a shell between bearings as it should be the only moisture condensing would
be the moisture containing in the air trapped there and as soon as axle is worm it will go
back to the air, no worries.


Top
 Profile  
 
 Post subject: Re: BB30 and moisture?
PostPosted: Tue Mar 06, 2012 4:59 am 
Offline
Shop Owner

Joined: Sat Jun 13, 2009 4:02 am
Posts: 1965
Location: NoVA/DC
a nitrogen purge prior to installation would do it.


Top
 Profile  
 
 Post subject: Re: BB30 and moisture?
PostPosted: Tue Mar 06, 2012 5:07 am 
Offline

Joined: Wed Dec 07, 2011 1:26 am
Posts: 414
Location: California's country side
Previously with the freeze spray I can see frost on the spindle.
I have to use a temp gun to check how cold I am getting it.


I guess nothing is a true vacuum here and not really corrosive so probably doesn't matter.


I was curious about the orientation of the C-clip, would it be better to have the opening facing the bottom?


Top
 Profile  
 
 Post subject: Re: BB30 and moisture?
Posted: Tue Mar 06, 2012 5:07 am 


Top
  
 
 Post subject: Re: BB30 and moisture?
PostPosted: Tue Mar 06, 2012 8:28 pm 
Offline
Formerly known as PezTech
User avatar

Joined: Tue Sep 26, 2006 12:37 am
Posts: 5698
Location: Phoenix Arizona
irrelevant...

The amount of moisture / humidity in the enclosed space doesnt "grow" as the temp changes. It would have been in there in any case.

whipe it before you seal it up if you want and roll.

_________________
charles@pezcyclingnews.com


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 8 posts ] 


Who is online

Users browsing this forum: Bing [Bot], kavitator and 33 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. Campy BB30 cup adaptors vs Parlee BB30 cups for Campy

[ Go to page: 1, 2, 3 ]

in Road

GuyGadois

32

1999

Sat May 10, 2014 2:56 am

BRM View the latest post

There are no new unread posts for this topic. bb30 vs pressfit bb30

in Road

ninjanoir78

6

1683

Thu Sep 26, 2013 1:50 pm

ms6073 View the latest post

There are no new unread posts for this topic. Attachment(s) BB30 help needed

in Road

mali

1

154

Thu Aug 21, 2014 5:04 pm

aaric View the latest post

There are no new unread posts for this topic. BB30 bearings, how quickly do you go through them?

[ Go to page: 1, 2, 3 ]

in Road

Sykes

36

1481

Fri Sep 19, 2014 4:07 pm

ricks123 View the latest post

There are no new unread posts for this topic. Praxis Works BB30 BB

in Road

mitchgixer6

6

683

Mon May 19, 2014 5:17 am

mitchgixer6 View the latest post


It is currently Mon Sep 22, 2014 5:44 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