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

Bending SS rod?

Search
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.

Bending SS rod?

Thread Tools
 
Search this Thread
 
Old 11-02-18 | 10:29 AM
  #1  
Thread Starter
Senior Member
10 Anniversary
 
Joined: Dec 2011
Posts: 2,914
Likes: 250
From: NE Ohio

Bikes: 1992 Serotta Colorado II,Co-Motion Speedster, Giant Escape Hybrid, 1977 Schwinn Super Le Tour

Bending SS rod?

I may be needing to fabricate a headlight bracket that will work with Dia Compe center pull brakes. The brackets on my other B&M headlights are about 1/8"+ diameter. Is this something I could do cold? Or would heating it up and bending work with SS rod. McMaster Carr has quite a selection.
​​​​​​ Thanks!
Tandem Tom is offline  
Reply
Old 11-02-18 | 11:03 AM
  #2  
Andrew R Stewart's Avatar
Senior Member
Titanium Club Membership
10 Anniversary
 
Joined: Feb 2012
Posts: 19,359
Likes: 5,492
From: Rochester, NY

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB

Kind of depends on a few factors like how tight a radius will the bend be and how many times will you bend the rod to get your final shape. My rule of thumb is that one wants as large a radius bend as does the job and as few bendings as possible. Remember this is much the paperclip situation. A paperclip can last for decades and still function the next time if it's not stressed too much any one time. But if it's bent beyond it's elastic limit (meaning that it stays bent after the stress is applied) then at least one of it's lives has been used up. The question that engineers study is how many lives does a particular cat have and how "flexible" was that cat to begin with There are guidelines about bend radius as a function of rod diameter but I don't know them. I certainly would bend cold. Doing so hot is a real pain in the hand and SS does funny things when hot, compared to steels. Will you be having to braze or weld the various bent rods together? One other rule of thumb is to have all the structural members attach at two ends, no cantilevered beams sticking our away from their point of contact. Triangularation is your friend. Andy
__________________
AndrewRStewart
Andrew R Stewart is offline  
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Tandem Tom
Framebuilders
7
09-24-19 09:04 PM
mikeronson
Classic & Vintage
16
08-26-15 06:16 PM
jimmytango
Singlespeed & Fixed Gear
18
07-10-12 02:50 PM
bikemore
Classic & Vintage
14
03-26-12 07:04 PM
ridethepanther
Classic & Vintage
30
08-13-10 01:56 PM

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.