Go Back  Bike Forums > Bike Forums > Framebuilders
Reload this Page >

Another many year project

Notices
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.

Another many year project

Old 12-08-19, 12:52 AM
  #1  
Andrew R Stewart 
Senior Member
Thread Starter
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 13,855

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Raleigh Pro, Trek Cycle Cross, Mongoose tomac ATB, GT Bravado ATB, JCP Folder

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2523 Post(s)
Liked 595 Times in 455 Posts
Another many year project

Started this frame about two months ago. I can get pretty single minded sometimes... Now I need to break for the holidays. It's almost done. Here's a shot of positioning the head badge prior to brazing and of the soon to be replaced bike's same area.

The bike will be what I call my station wagon. Suitable for commuting to slow but not loaded touring. I'll return to this thread in a while when there's color to show (at this point the same marine blue metallic the old bike has). Andy

__________________
AndrewRStewart
Andrew R Stewart is offline  
Old 12-08-19, 03:10 AM
  #2  
guy153
Senior Member
 
Join Date: Dec 2019
Posts: 307
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 88 Post(s)
Liked 64 Times in 53 Posts
Looks really nice! What are those rings of brazing material around the top and bottom of the HT?
guy153 is offline  
Old 12-08-19, 10:09 AM
  #3  
Andrew R Stewart 
Senior Member
Thread Starter
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 13,855

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Raleigh Pro, Trek Cycle Cross, Mongoose tomac ATB, GT Bravado ATB, JCP Folder

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2523 Post(s)
Liked 595 Times in 455 Posts
Head tube reinforcing rings have had fillets at their edges so there is no "shore line". Andy
__________________
AndrewRStewart
Andrew R Stewart is offline  
Old 12-08-19, 10:21 AM
  #4  
guy153
Senior Member
 
Join Date: Dec 2019
Posts: 307
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 88 Post(s)
Liked 64 Times in 53 Posts
I'd never heard of head-tube reinforcing rings before, but just googled them. They seem like a good idea on larger diameter HTs, like the Columbus braze-on cups. Do you braze them on before attaching the DT and TT? That might help to keep the HT round.
guy153 is offline  
Old 12-08-19, 01:26 PM
  #5  
Andrew R Stewart 
Senior Member
Thread Starter
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 13,855

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Raleigh Pro, Trek Cycle Cross, Mongoose tomac ATB, GT Bravado ATB, JCP Folder

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2523 Post(s)
Liked 595 Times in 455 Posts
The rings are more to prevent the HT ends from expanding when a headset is pressed in. On a lugged frame it's the lug that provides that extra strength. On a luggless frame something else (the reinforcing band or a machined butt) do the job. On filleted frames I like to avoid having sharp edges, corners, shorelines for aesthetic reasons. This frame violates this goal in a few areas but otherwise follows that theme. More photos after completion. Andy
__________________
AndrewRStewart
Andrew R Stewart is offline  
Old 12-08-19, 01:40 PM
  #6  
guy153
Senior Member
 
Join Date: Dec 2019
Posts: 307
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 88 Post(s)
Liked 64 Times in 53 Posts
Interesting. Apart from the MTB frame where I brazed on the cups I have just used one of the thicker walled HTs from Columbus or Reynolds. They aren't butted just about 1.3mm thick. The thinner ones they make I think are intended for lugs but I guess you could use those reinforcement rings for lugless.
guy153 is offline  
Old 12-08-19, 09:07 PM
  #7  
bikingman
Senior Member
 
Join Date: Sep 2012
Posts: 129
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 11 Post(s)
Liked 0 Times in 0 Posts
I see both lugs and reinforcement rings... Just wondering about the choice to use both in this case when it seems the lugs would have been plenty strength against headset pressins. Is this to reinforce the headtube from ride shock load (hitting potholes)?
bikingman is offline  
Old 12-08-19, 09:35 PM
  #8  
Andrew R Stewart 
Senior Member
Thread Starter
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 13,855

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Raleigh Pro, Trek Cycle Cross, Mongoose tomac ATB, GT Bravado ATB, JCP Folder

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2523 Post(s)
Liked 595 Times in 455 Posts
The choice, for or against, to do a fillet frame has nothing to do with strength. That either style of joining has added strength about the HT ends is the issue.

But bikingman isn't correct in his seeing both lugs and rings on the same frame (or in the same photo). The un finished frame has fillet joints and reinforcing rings. The blue frame is lugged. Am I not writing well enough to describe what the photos show? Andy
__________________
AndrewRStewart
Andrew R Stewart is offline  
Old 12-09-19, 07:28 AM
  #9  
unterhausen
Randomhead
 
Join Date: Aug 2008
Location: Happy Valley, Pennsylvania
Posts: 20,215
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked 567 Times in 418 Posts
there have been lugs made with reinforcing rings, notably Nervex Pro.
unterhausen is offline  
Old 12-09-19, 09:45 AM
  #10  
Andrew R Stewart 
Senior Member
Thread Starter
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 13,855

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Raleigh Pro, Trek Cycle Cross, Mongoose tomac ATB, GT Bravado ATB, JCP Folder

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2523 Post(s)
Liked 595 Times in 455 Posts
I took guy153's comment to say that thin rings are made for adding to lugs. Maybe, but not any I've seen. Andy
__________________
AndrewRStewart
Andrew R Stewart is offline  
Old 12-09-19, 09:48 AM
  #11  
guy153
Senior Member
 
Join Date: Dec 2019
Posts: 307
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 88 Post(s)
Liked 64 Times in 53 Posts
Originally Posted by Andrew R Stewart View Post
I took guy153's comment to say that thin rings are made for adding to lugs. Maybe, but not any I've seen. Andy
I meant you could maybe use those rings if you were making a lugless frame but with a thinner walled HT such as is usually used when you have lugs. If you use the thicker 1.3mm HTs for a lugless frame then I don't think you need those rings.
guy153 is offline  
Old 12-09-19, 10:24 AM
  #12  
unterhausen
Randomhead
 
Join Date: Aug 2008
Location: Happy Valley, Pennsylvania
Posts: 20,215
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked 567 Times in 418 Posts
you probably don't need them. Can't hurt.
unterhausen is offline  
Old 12-12-19, 01:14 AM
  #13  
duanedr 
Senior Member
 
Join Date: Aug 2012
Location: Seattle
Posts: 304
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 46 Post(s)
Liked 18 Times in 14 Posts
With my bikes (steel, non-TIG welded), I require a flourish on the HT ends (and ST end). It makes the frame look finished. When the tube just ends, it looks like the frame was made to hit a price point rather than instill pride of ownership (or craftsmanship).
__________________
https://www.flickr.com/photos/54319503@N05/
https://www.draper-cycles.com
duanedr 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 - Do Not Sell My Personal Information -

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.