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 01-15-08, 03:04 AM   #1
pat_00
Junior Member
Thread Starter
 
Join Date: Dec 2007
Bikes:
Posts: 12
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
will this bottom bracket work on a french bike?

http://www.sjscycles.co.uk/product-S...reads-4521.htm

Having some trouble finding a french threaded BB for my peugeot. Then I came across this.

Anyone have any experience with these type of BBs? I assume it would work, but there might be something i'm missing.
pat_00 is offline   Reply With Quote
Old 01-15-08, 11:03 AM   #2
sch
Senior Member
 
Join Date: May 2003
Location: Mountain Brook. AL
Bikes:
Posts: 3,039
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 28 Post(s)
An interesting product, looks like one solution to the Fr thread problem.
Not sure why they talk about 1.6mm washers, as it seems that the
BB would accomodate any width from 68 to 73. Maybe the internal
threading is not that robust. I would inquire about what tooling is
used to tighten/loosen the BB and lube the internal thread with suitable
grease. DO NOT use loktite, you would never get it off with the fine
internal threading on the BB.
sch is offline   Reply With Quote
Old 01-15-08, 11:27 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)
From Sheldon Browns site:

Quote:
Originally Posted by The Master, Sheldon Brown
These YST bottom brackets fit any threaded 68-70 mm shell, and do not use the existing threads.

The main unit slides in from the right side, and there is a conical lockring that screws in from the left. Uses standard Shimano splined tools.

Uses standard industrial 61903 bearing cartridges, secured by snap rings.

Note! Your frame must be modified (chamfered/countersunk) to permit one of these bottom brackets to be installed. This requires an expensive special tool that your local bike shop may or may not have available (same tool used for Mavic and Schlumpf bottom brackets.)

Once the frame has been modified, a standard bottom bracket will no longer fit.

We were initially very excited to get these in, but we found that the quality was too erratic, so we no longer carry this product.
Having to mod the frame is a big requirement. The bottom bracket is of questionable quality. Sounds like a crap shoot.

Have you absolutely determined that a french thread is required? A lot of Pugs, especially those produced in the 80's and beyond used British.
__________________
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.

Last edited by dobber; 01-15-08 at 01:54 PM.
dobber is offline   Reply With Quote
Old 01-15-08, 11:40 AM   #4
Dan Burkhart 
Senior member
 
Dan Burkhart's Avatar
 
Join Date: Oct 2004
Location: Oakville Ontario
Bikes:
Posts: 5,982
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 33 Post(s)
Quote:
Originally Posted by pat_00 View Post
http://www.sjscycles.co.uk/product-S...reads-4521.htm

Having some trouble finding a french threaded BB for my peugeot. Then I came across this.

Anyone have any experience with these type of BBs? I assume it would work, but there might be something i'm missing.
The problem with those is you need to find someone with a chamfering tool to chamfer the BB shell. I can tell you from first hand experience if you skip this step, the outer flange will likely fail. Other than that, they seem to be of ok quality.
Dan Burkhart is offline   Reply With Quote
Old 01-15-08, 01:01 PM   #5
Grand Bois
Senior Member
 
Grand Bois's Avatar
 
Join Date: Mar 2005
Location: Pinole, CA, USA
Bikes:
Posts: 16,688
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 87 Post(s)
You'd be better off with one of these than a piece of junk like that YST:

http://cgi.ebay.com/ws/eBayISAPI.dll...MEWA:IT&ih=019
Grand Bois is online now   Reply With Quote
Old 01-15-08, 04:51 PM   #6
pat_00
Junior Member
Thread Starter
 
Join Date: Dec 2007
Bikes:
Posts: 12
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'm not 100% sure it's french thread yet, I'll have it apart next week. I've dated it roughly to the mid 70s by the decals. However it is an Australian built model, i can't find any info about whether or not they used british thread on the BB.

Just looking at my options, i may not have to replace the bottom cups if i can find a cotter-less axle to fit in the existing bb.
pat_00 is offline   Reply With Quote
Old 01-15-08, 04:54 PM   #7
operator
cab horn
 
Join Date: Jun 2004
Location: Toronto
Bikes: 1987 Bianchi Campione
Posts: 28,306
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by pat_00 View Post
http://www.sjscycles.co.uk/product-S...reads-4521.htm

Having some trouble finding a french threaded BB for my peugeot. Then I came across this.

Anyone have any experience with these type of BBs? I assume it would work, but there might be something i'm missing.
This is the standard YST brakcet. Low quality, low everything. It basically is a last ditch effort to revive a bike with F'ed up BB threads.

I remember Sheldon Brown remarking that they stopped selling them cause they blew. Most shops should have this special "frame mod" tool. Once you do it, you can't go back.
operator is offline   Reply With Quote
Old 01-15-08, 08:13 PM   #8
pat_00
Junior Member
Thread Starter
 
Join Date: Dec 2007
Bikes:
Posts: 12
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
okay i'm convinced not to go with this option

thanks for your advice everyone.
pat_00 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 02:25 PM.