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


Go Back   > >

Framebuilders Thinking about a custom frame? Lugged vs Fillet Brazed. Different Frame materials? Newvex or Pacenti Lugs? why get a custom Road, Mountain, or Track Frame? Got a question about framebuilding? Lets discuss framebuilding at it's finest.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 05-15-09, 10:19 AM   #1
koamileli
Senior Member
Thread Starter
 
Join Date: May 2009
Location: Seattle
Bikes: too many
Posts: 51
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
frame types and numbers

I recently came across an early 80s Fuji that was labeled as having a "Quad butted Cromoly 9658" frame. I only had heard of up to triple butted at that time. How is this different and whats the number signifigance?
koamileli is offline   Reply With Quote
Old 05-15-09, 03:58 PM   #2
JohnDThompson 
Old fart
 
JohnDThompson's Avatar
 
Join Date: Nov 2004
Location: Appleton WI
Bikes: Several, mostly not name brands.
Posts: 16,458
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 92 Post(s)
Ask the marketing department. If double-butted is good, and triple butted better, then it stands to reason that quad butted must be the best yet!
JohnDThompson is offline   Reply With Quote
Old 05-16-09, 11:10 AM   #3
koamileli
Senior Member
Thread Starter
 
Join Date: May 2009
Location: Seattle
Bikes: too many
Posts: 51
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
um yeah that doesnt help me any
koamileli is offline   Reply With Quote
Old 05-16-09, 12:34 PM   #4
E.A. Webb
Guest
 
Join Date: Apr 2009
Bikes:
Posts: 28
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Good answers to your questions here: tubes -double butted triple butted and other vegetables


Also of note: http://www.sheldonbrown.com/gloss_bo-z.html#butted


Butted

Thicker at the ends. Said of spokes and frame tubing. (Butted spokes are also called "swaged") Butted tubing is usually made with a constant outside diameter, but thicker walls at the ends. The idea is to make the part stronger at the ends, where the stresses are greatest, and lighter in the long middle section, where stresses are less. Some writers have objected to this term being applied to spokes, and maintain that "swaged" is more correct, since the operation that produces a butted/swaged spoke is one of thinning the middle, not thickening the ends. For some reason they don't generally object to the use of "butted" in reference to tubing, though the process is also one of thinning the middle, not thickening the end. This objection is based on a misunderstanding of the origin of the origin of the term "butted." "Butted" means having a butt, i.e. a thick end, and has no reference to the means of fabrication.


The BikeForums link has a better description IMO.
E.A. Webb 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 01:36 PM.