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 04-09-07, 09:44 AM   #1
Xhavier_5478
slacker..
Thread Starter
 
Xhavier_5478's Avatar
 
Join Date: Mar 2007
Location: Colorado Springs, Colorado
Bikes: '92 Schwinn PDG Series OS 26, '05 Jamis Eclipse set up as TT
Posts: 94
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
adding accents to lugging.

I am stripping down a frame to bare steel, for repainting and a fixie build. It is a lugged frame, but not fancy enough to have any sort of maker accents on the lugs, I was just wondering if there was anyway to add a design or imprint in the lugs, and what tools would one use?
Xhavier_5478 is offline   Reply With Quote
Old 04-09-07, 09:47 AM   #2
Blue Jays
Banned
 
Join Date: Jun 2006
Location: United States
Bikes: roadbikes and full-suspension mountainbikes
Posts: 1,926
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Perhaps clicking on the Joe Bell site for lugged-frame painting ideas and suggestions?
Blue Jays is offline   Reply With Quote
Old 04-09-07, 03:20 PM   #3
Xhavier_5478
slacker..
Thread Starter
 
Xhavier_5478's Avatar
 
Join Date: Mar 2007
Location: Colorado Springs, Colorado
Bikes: '92 Schwinn PDG Series OS 26, '05 Jamis Eclipse set up as TT
Posts: 94
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'm not thinking much about painting right now, I'm wondering if there is a way to add something like this to some of my

(Referring to the makers insignia on top of the fork lug)

What I'm trying to get at is how are those designs cut into the lug?

Or is it there in the initial creation of the part?

Last edited by Xhavier_5478; 04-10-07 at 11:03 AM.
Xhavier_5478 is offline   Reply With Quote
Old 04-09-07, 07:54 PM   #4
Andreasaway
Senior Member
 
Join Date: Oct 2005
Bikes:
Posts: 107
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
With lug cut outs, they are added often in the casting stage, but many smaller custom builders will cut them out prior to brazing. So in short, I have never heard of someone adding them later. Maybe you could try using a dremel tool. Good Luck
Andreasaway is offline   Reply With Quote
Old 04-09-07, 08:08 PM   #5
dcullen
Senior Member
 
Join Date: Jul 2006
Bikes:
Posts: 125
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
That probably cast or pantographed into the crown casting. A pantograph is something like a router for metal parts, used to cut out shapes, letters, etc from steel parts (or commonly, molds) You might be able to simulate this with a piece of sheet brass with a cut out logo. Braze it to the flats of the crown and file/finish. You should be able to add small extensions to the lug the same way, they wont add strength, just decoration. Maybe use thin tubing so it easier to fit o the tubes.

Quote:
Originally Posted by Xhavier_5478
I'm not thinking much about painting right now, I'm wondering if there is a way to add something like this to some of my lugs?

(Referring to the makers insignia on top of the fork lug)

What I'm trying to get at is how are those designs cut into the lug?

Or is it there in the initial creation of the part?
dcullen is offline   Reply With Quote
Old 05-02-07, 12:58 PM   #6
rivethead147
Junior Member
 
Join Date: May 2007
Bikes:
Posts: 5
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
you would have to take the lug off to cut the shapes in, cuttin gin with a dremel will be difficult as the tolerance between lug and pipe are tight and you will most likely cut into the pipe which creates a structural problem.

some one posted that the lug is cast, i'm machinist and generally work on custom bikes (motorcycle) so maybe there is a reason for it but....what lunatic would cast a lug? casting creates weak parts, casting has all sorts of problems for parts designed to cojoin and load any kind of pressure.

if you really want to cut the designs in, i would suggest starting out with a caliper and measure exact pipe width, should be able to find pre fab lugs and find ones that a)fit and b)has enough material to cut out patterns without sacrificing structural integrity. you will need a torch to heat the pipe up and remove the lugs (i would guess it's brazed, clearly; scrape the paint first and heat the joint up, it will expand in the process so get a pair of crappy vice grips to help). careful not to crimp the pipe in the process, and good luck. for the torch, assuming it's brazed a propane torch should get it hot enough.
rivethead147 is offline   Reply With Quote
Old 05-08-07, 06:02 PM   #7
Dr.Deltron
Guest
 
Bikes:
Posts: n/a
Mentioned: Post(s)
Tagged: Thread(s)
Quoted: Post(s)
Quote:
Originally Posted by Xhavier_5478
I am stripping down a frame to bare steel, for repainting and a fixie build. It is a lugged frame, but not fancy enough to have any sort of maker accents on the lugs, I was just wondering if there was anyway to add a design or imprint in the lugs, and what tools would one use?
There are several materials to use, depending on complexity of design, so that you can sand blast the designs into the lugs. The pressure blaster and the proper media might set you back a few hundred bucks though.

Thanks for the intrigueing idea. I have access to all the needed equipment, so I'll have to give it a whirl and see how it works.
  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 01:11 AM.