Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Bottom Bracket has broken splines

Search
Notices
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.

Bottom Bracket has broken splines

Thread Tools
 
Search this Thread
 
Old 09-26-08, 03:37 PM
  #1  
Senior Member
Thread Starter
 
Join Date: Jul 2007
Location: Maryland
Posts: 136

Bikes: Bridgestone '90 RB-1, Giant TCR Alloy, 90's mountain bikes galore.

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Bottom Bracket has broken splines

Hey everyone, I have a bike with a cartridge-style square-taper BB installed that has its splines (20 teeth) broken off on the drive side.

1) Is there a way to remove the BB?
2) If I don't care that much about performance, can I just leave it in there? Will it suddenly break and fall out?

Thanks.
Tinkeric is offline  
Old 09-26-08, 03:46 PM
  #2  
Elitist Troglodyte
 
DMF's Avatar
 
Join Date: Jun 2006
Location: Dallas
Posts: 6,925

Bikes: 03 Raleigh Professional (steel)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 1 Time in 1 Post
1) If the retaining ring protrudes beyond the hanger tube, a big-ass channel-locks or pipe wrench will get it (be sure to turn in the correct direction). If not, a hammer and chisel and a whole lot of swearing.

2) Assuming you mean the splines that are used to screw it into the hanger tube, they have nothing to do with how it performs.
__________________
Stupidity got us into this mess - why can't it get us out?

- Will Rogers
DMF is offline  
Old 09-26-08, 04:46 PM
  #3  
messenger
 
Join Date: Aug 2008
Location: WLA
Posts: 599

Bikes: pinarellos and a colnago

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 1 Time in 1 Post
yes, a bike shop will have some extractors....
G piny parnas is offline  
Old 09-26-08, 05:57 PM
  #4  
cab horn
 
Join Date: Jun 2004
Location: Toronto
Posts: 28,353

Bikes: 1987 Bianchi Campione

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 42 Post(s)
Likes: 0
Liked 26 Times in 19 Posts
Originally Posted by G piny parnas
yes, a bike shop will have some extractors....
Like what, exactly.
operator is offline  
Old 09-26-08, 11:16 PM
  #5  
Senior Member
Thread Starter
 
Join Date: Jul 2007
Location: Maryland
Posts: 136

Bikes: Bridgestone '90 RB-1, Giant TCR Alloy, 90's mountain bikes galore.

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Sounds good. My only concern about #2 was that the body near the drive-side got screwed up along with the splines -- and that at any moment it could literally disintegrate and send itself out with the crank.

Originally Posted by DMF
1) If the retaining ring protrudes beyond the hanger tube, a big-ass channel-locks or pipe wrench will get it (be sure to turn in the correct direction). If not, a hammer and chisel and a whole lot of swearing.

2) Assuming you mean the splines that are used to screw it into the hanger tube, they have nothing to do with how it performs.
Tinkeric is offline  
Old 09-27-08, 10:00 AM
  #6  
Death fork? Naaaah!!
 
top506's Avatar
 
Join Date: Nov 2005
Location: The other Maine, north of RT 2
Posts: 5,325

Bikes: Seriously downsizing.

Mentioned: 49 Post(s)
Tagged: 0 Thread(s)
Quoted: 559 Post(s)
Liked 629 Times in 280 Posts
I have removed stripped BB cups with a big pipe wrench.
Last ditch method only.
Top
__________________
You know it's going to be a good day when the stem and seatpost come right out.

(looking for a picture and not seeing it? Thank the Photobucket fiasco.PM me and I'll link it up.)
top506 is offline  
Old 09-27-08, 06:14 PM
  #7  
Senior Member
 
coldfeet's Avatar
 
Join Date: Dec 2007
Posts: 2,118
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Originally Posted by Tinkeric
Sounds good. My only concern about #2 was that the body near the drive-side got screwed up along with the splines -- and that at any moment it could literally disintegrate and send itself out with the crank.
Umm, you screwed up BB shell enough that it took out the splines on the part that screws the BB into the shell? I think you may have screwed the frame. How did this happen? Any Pics?
coldfeet is offline  
Old 09-29-08, 05:35 PM
  #8  
Elitist Troglodyte
 
DMF's Avatar
 
Join Date: Jun 2006
Location: Dallas
Posts: 6,925

Bikes: 03 Raleigh Professional (steel)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 1 Time in 1 Post
DMF 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



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

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.