Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

Frame Ventilation

Old 04-02-09, 01:26 PM
  #1  
aroundoz
More Energy than Sense
Thread Starter
 
aroundoz's Avatar
 
Join Date: Aug 2005
Location: Seattle
Posts: 716

Bikes: Co-Motion Divide

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Frame Ventilation

I have heard that a good steel frame has a lot openings so it can dry out and hopefully prevent moisture build up and rust.

I had an old Braxton which took it to the extreme.

I have also owned a couple of Thorn bikes and one even had sealed tubes. Does that make sense to you? Unless they somehow created a vacuum when sealing them, there will be no place for the moisture to go.

Wondering what your opinion is on this. When I lived in Seattle, a respected mechanic would routinely drill a small hole in the bottom of the BB to let moisture run out and I am thinking of doing this to my steel frame.
Attached Images
File Type: jpg
100_0233.jpg (86.5 KB, 17 views)
aroundoz is offline  
Old 04-02-09, 02:09 PM
  #2  
AEO
Senior Member
 
AEO's Avatar
 
Join Date: Jun 2007
Location: A Coffin Called Earth. or Toronto, ON
Posts: 12,258

Bikes: Bianchi, Miyata, Dahon, Rossin

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
I have a similar set of slits on my BB, but it's a cromo CX frame and it actually has holes all around because welding or brazing = heat and expansion.
__________________
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
http://sanfrancisco.ibtimes.com/arti...ger-photos.htm
AEO is offline  
Old 04-02-09, 02:37 PM
  #3  
Geordi Laforge
Large Member
 
Geordi Laforge's Avatar
 
Join Date: Nov 2008
Posts: 1,497
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
use framesaver, first of all
and drill a small hole on the bottom of the bb shell.
cover with tape.
after it rains, turn bike over and peel back tape.
Geordi Laforge is offline  
Old 04-02-09, 02:52 PM
  #4  
cbchess
Map maker
 
cbchess's Avatar
 
Join Date: Feb 2008
Location: Richmond,VA
Posts: 728

Bikes: Ventana El Ciclon, Walt Works 29er, Specialized Enduro (fixed up for my son).

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
use frame saver or any spray oil type water displacer - I used a spray can of Gun oil that worked very well.
It seems a hole in the BB would allow more water in. If you are worried about water in the BB area just take out your seat post and turn your bike upside down.
cbchess is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.