Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

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.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 05-21-09, 04:26 PM   #1
hockeyteeth
Senior Member
Thread Starter
 
hockeyteeth's Avatar
 
Join Date: Sep 2006
Location: Gnv, FL
Bikes:
Posts: 1,890
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Phil Wood BB Spindle Spacer?

I replaced cartridge bearings in a Phil Wood BB the other day and noticed the only thing controlling the chainline was a movable spacer. Why is that? Seems like a bad design to me...
hockeyteeth is offline   Reply With Quote
Old 05-22-09, 05:36 AM   #2
Garthr
Senior Member
 
Join Date: Oct 2008
Location: where
Bikes: Franklin Frames Custom, Rivendell Bombadil
Posts: 1,289
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by hockeyteeth View Post
I replaced cartridge bearings in a Phil Wood BB the other day and noticed the only thing controlling the chainline was a movable spacer. Why is that? Seems like a bad design to me...

I wonder about that too. It's all to easy to change your chainline just by tapping the axle! I've installed them, but never owned one. Try calling or emailing Phil Wood and ask them about their "bad design". They do respond to email.

I'm serious, ask them just as you asked here. If they are worth their weight in gold(which some of their parts are approaching), they should have a good answer, not one that's blowing smoke up the you-know-what.

Can you post any photos of the disassembled BB ?
Garthr is offline   Reply With Quote
Old 05-22-09, 07:53 AM   #3
dobber
Perineal Pressurized
 
dobber's Avatar
 
Join Date: Oct 2003
Location: In Ebritated
Bikes:
Posts: 6,557
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
What spacer? I adjust the chainline by how far the individual cups are threaded in.
__________________
This is Africa, 1943. War spits out its violence overhead and the sandy graveyard swallows it up. Her name is King Nine, B-25, medium bomber, Twelfth Air Force. On a hot, still morning she took off from Tunisia to bomb the southern tip of Italy. An errant piece of flak tore a hole in a wing tank and, like a wounded bird, this is where she landed, not to return on this day, or any other day.
dobber is offline   Reply With Quote
Old 05-22-09, 07:16 PM   #4
hockeyteeth
Senior Member
Thread Starter
 
hockeyteeth's Avatar
 
Join Date: Sep 2006
Location: Gnv, FL
Bikes:
Posts: 1,890
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I don't have any photos unfortunately. Maybe I'll call them on Tuesday.

Dobber: There are two cartridge bearings for each cup and a spacer sandwiched between them, I'm not sure how to explain it any better, but the spacer is what allows you to adjust the preload on the bearings by tightening the cups. This spacer can be moved with force along the spindle, thereby adjusting how far the spindle is inserted into either cup and modifying the original chainline.
hockeyteeth is offline   Reply With Quote
Old 05-22-09, 07:49 PM   #5
dobber
Perineal Pressurized
 
dobber's Avatar
 
Join Date: Oct 2003
Location: In Ebritated
Bikes:
Posts: 6,557
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by hockeyteeth View Post
I don't have any photos unfortunately. Maybe I'll call them on Tuesday.

Dobber: There are two cartridge bearings for each cup and a spacer sandwiched between them, I'm not sure how to explain it any better, but the spacer is what allows you to adjust the preload on the bearings by tightening the cups. This spacer can be moved with force along the spindle, thereby adjusting how far the spindle is inserted into either cup and modifying the original chainline.
Is this an outboard bearing?

I'm thinking of the plain vanilla bottom bracket. Two cartridge bearings, an axle and a housing.
__________________
This is Africa, 1943. War spits out its violence overhead and the sandy graveyard swallows it up. Her name is King Nine, B-25, medium bomber, Twelfth Air Force. On a hot, still morning she took off from Tunisia to bomb the southern tip of Italy. An errant piece of flak tore a hole in a wing tank and, like a wounded bird, this is where she landed, not to return on this day, or any other day.
dobber is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -6. The time now is 03:38 PM.