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.

Rack tubing?

Old 03-10-19, 11:34 AM
  #1  
ncscott
cyclist
Thread Starter
 
Join Date: Aug 2004
Location: vermont
Posts: 350

Bikes: road bike, mountain bike, touring bike

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Rack tubing?

I'm going to be taking a beginners welding class soon and would like to build a rack for the bike. I have looked at all the suppliers of frame tubes and can't figure out if any of them sell the tubing for touring racks.
Could anyone please point me into the right directions for a supplier of rack tubing.
thanks,
ncscott is offline  
Old 03-10-19, 11:54 AM
  #2  
unterhausen
Randomhead
 
Join Date: Aug 2008
Location: Happy Valley, Pennsylvania
Posts: 17,874
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
what kind of welding, TIG?

I just buy my rack tubing from McMaster Carr. If you are going to get the rack powdercoated or plated, then you can go with 4130, and there are probably better choices than McMaster for that.
unterhausen is offline  
Old 03-10-19, 02:10 PM
  #3  
ncscott
cyclist
Thread Starter
 
Join Date: Aug 2004
Location: vermont
Posts: 350

Bikes: road bike, mountain bike, touring bike

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
The local makers shop has a TIG welder and that is the class i am taking.
What size tubing do you use and what size plate metal do you use for tabs?
Thanks,
ncscott is offline  
Old 03-10-19, 02:29 PM
  #4  
unterhausen
Randomhead
 
Join Date: Aug 2008
Location: Happy Valley, Pennsylvania
Posts: 17,874
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
5/16" stainless for most tubing, .035 wall. You can get away with .028" in 4130, but the bends might not be as nice. I usually get 1/8" or 3/32" for tabs. You can buy tabs from a number of suppliers.

Rear rack might be better with 3/8" same thicknesses. I didn't really like 1/4" for anything, but I'll probably start using it for randonneuring front racks.
unterhausen is offline  
Old 03-11-19, 08:41 AM
  #5  
wsteve464
Senior Member
 
Join Date: Jul 2016
Posts: 231
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 67 Post(s)
McMaster has steel tubing , not 4130 though, for half the price of 4130 at Aircraft Spruce.
https://www.mcmaster.com/standard-metal-tubing
wsteve464 is offline  
Old 03-11-19, 07:30 PM
  #6  
unterhausen
Randomhead
 
Join Date: Aug 2008
Location: Happy Valley, Pennsylvania
Posts: 17,874
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
mcmaster has 4130 tubing
https://www.mcmaster.com/metal-tubing

I wish it was easier to get a direct link to a page.


I usually use seamed stainless though.
unterhausen is offline  
Old 03-11-19, 09:11 PM
  #7  
Andrew R Stewart 
Senior Member
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 11,359

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: 1650 Post(s)
My yet to be delivered order of 4130 tubes (for a rack) is coming from Stockcar Steel. https://stockcarsteel.com/ Not the best range of diameters and walls but good prices on what they do have.

My current rack project uses 4130 through out. 3/8" x .035" for the perimeter hoop and the center strut on each side. 5/16" x .035" on the rest. Andy
__________________
AndrewRStewart
Andrew R Stewart is offline  
Old 03-12-19, 08:39 AM
  #8  
Philphine
Senior Member
 
Join Date: Dec 2007
Posts: 768
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 77 Post(s)
you could check and see if there's a place called "metal supermarket" near you. don't know what their total selection is since i just get regular weldable steel, but they sell to the public in small amounts, like a few feet.
Philphine is offline  
Old 03-13-19, 02:44 PM
  #9  
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 40,244

Bikes: 8

Mentioned: 177 Post(s)
Tagged: 0 Thread(s)
Quoted: 6344 Post(s)
10mm/3/8" used by Brice Gordon.. (Mine was from the early 80s , he was brazing them together, then)..
Tubus similar,

Bike Friday used 8mm ,, Blackburn used 8mm aluminum rod..
fietsbob 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

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