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

Stopper pin not seated for Hollowtech II BB

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.

Stopper pin not seated for Hollowtech II BB

Old 08-17-10, 05:27 AM
  #1  
digger
Senior Member
Thread Starter
 
digger's Avatar
 
Join Date: May 2002
Location: Likely North of you.
Posts: 2,161
Mentioned: 110 Post(s)
Tagged: 0 Thread(s)
Quoted: 761 Post(s)
Likes: 0
Liked 69 Times in 69 Posts
Stopper pin not seated for Hollowtech II BB

I had installed a Hollowtech II BB in an old Raleigh road frame last night. The stopper plate pin will not seat properly.

Story:
Before purchasing the new BB, I had measured the BB shell to be about 69mm. I couldn't use my calipers, so I used a ruler instead, unfortunately I could not get the ruler flush to the BB shell due to the cranks, cables and BB cable guide all in the way. So, when I came up with a measurement of 69mm I said, "Ah, must be a 68mm shell."

However, when I removed the crank and original square taper BB I then measured the BB shell with my calipers with a result of 70.8mm. Erk? Oh...crap....

Undaunted (and somehow hopefull), I went ahead and installed the new BB and it installed just fine. Obviously this BB is English threaded, even though it is a 70mm shell.

I went ahead and tried the crank (FC4550) but the stopper plate pin won't seat into the hole.

I'm not sure my how much the pin misses the hole (I assume 2mm) as it is difficult to see.

Would it be safe to go ahead and torque down the crank bolts and ride this crank, even though the stopper plate retention pin is not in place?
digger is offline  
Old 08-17-10, 09:46 AM
  #2  
operator
cab horn
 
Join Date: Jun 2004
Location: Toronto
Posts: 28,321

Bikes: 1987 Bianchi Campione

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 13 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Test the closing of the plate with the crankarm by itself. Does it close?
operator is offline  
Old 08-17-10, 10:35 AM
  #3  
digger
Senior Member
Thread Starter
 
digger's Avatar
 
Join Date: May 2002
Location: Likely North of you.
Posts: 2,161
Mentioned: 110 Post(s)
Tagged: 0 Thread(s)
Quoted: 761 Post(s)
Likes: 0
Liked 69 Times in 69 Posts
Originally Posted by operator View Post
Test the closing of the plate with the crankarm by itself. Does it close?
Yes, I had tried that to see if something was preventing it from closing.

I think I'll have to bring the bike in to my LBS so that can use their facing tool remove some of the BB material - about 1mm each side.
digger is offline  
Old 08-17-10, 12:35 PM
  #4  
badamsjr
17yrold in 64yrold body
 
Join Date: May 2010
Location: Northern CA
Posts: 922
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
That was what I was going to suggest--having it refaced at the LBS. I seem to recall someone in one of these forums saying something about old Raleigh frames having a wider BB shell than the standard 68mm. Looks like they were right, and you found one! I'm not sure what the prize for that is, though.

BTW I had a regular 68mm BB shell that I had trouble getting the latch pin to close--turned out I had not gotten the drive side cup flush with the side of the shell. Took out the cup and chased the threads with a steel PW retainer, and reinstalled the cup. Now it works, and all is well.

Last edited by badamsjr; 08-17-10 at 12:38 PM.
badamsjr 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.