Comments on: Rack Building Basics — Tools http://alexwetmore.org/archives/496 Thu, 09 Oct 2014 15:41:30 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Alex Wetmore http://alexwetmore.org/archives/496/comment-page-1#comment-638981 Alex Wetmore Thu, 09 Oct 2014 15:39:26 +0000 /blogs/alex_wetmore/archive/2007/10/02/rack-building-basics-tools.aspx#comment-638981 I just added the zip ties to try and hold it in place. They''ve never been ideal, the setup is just a bit fussy. There has been recent discussion on the Framebuilders list about glasses and another supplier came up that I might check out in the future. You can find that list on Google Groups, it is just called "framebuilders". I just added the zip ties to try and hold it in place. They”ve never been ideal, the setup is just a bit fussy. There has been recent discussion on the Framebuilders list about glasses and another supplier came up that I might check out in the future. You can find that list on Google Groups, it is just called “framebuilders”.

]]> By: Ray Hastings http://alexwetmore.org/archives/496/comment-page-1#comment-638963 Ray Hastings Thu, 09 Oct 2014 15:28:06 +0000 /blogs/alex_wetmore/archive/2007/10/02/rack-building-basics-tools.aspx#comment-638963 I just noticed the zip ties holding the clip on shade on your didymium brazing glasses. I have the same issue, the top of the glasses is too thick, the clip on, won''t grip it properly, wants to ride up. Did you remove the existing clip on mechanism or just force it with the zip ties? I need to do something similar with my set up. I just noticed the zip ties holding the clip on shade on your didymium brazing glasses. I have the same issue, the top of the glasses is too thick, the clip on, won”t grip it properly, wants to ride up. Did you remove the existing clip on mechanism or just force it with the zip ties? I need to do something similar with my set up.

]]> By: Alex Wetmore http://alexwetmore.org/archives/496/comment-page-1#comment-617173 Alex Wetmore Tue, 30 Sep 2014 15:32:26 +0000 /blogs/alex_wetmore/archive/2007/10/02/rack-building-basics-tools.aspx#comment-617173 I haven''t had trouble with that flattening out. I''m using the cheaper Ridgid bender for 5/16" tubing, that one should be higher quality. I have built many of my racks with 5/16" x 0.035" perimeter and legs, and 0.028" for internal cross bars and backstop. Doing a hybrid like that might allow you to get better bends without making the rack much heavier. I haven”t had trouble with that flattening out. I”m using the cheaper Ridgid bender for 5/16″ tubing, that one should be higher quality.

I have built many of my racks with 5/16″ x 0.035″ perimeter and legs, and 0.028″ for internal cross bars and backstop. Doing a hybrid like that might allow you to get better bends without making the rack much heavier.

]]> By: Ray Hastings http://alexwetmore.org/archives/496/comment-page-1#comment-616816 Ray Hastings Tue, 30 Sep 2014 11:55:35 +0000 /blogs/alex_wetmore/archive/2007/10/02/rack-building-basics-tools.aspx#comment-616816 I''m really enjoying your blog, has really helped me out a lot. Do you have any issues with 90 degree bends on 516 .028 wall 4130 tubing flattening out? I am using a Rigid 600 series, model 38038 bender. Looks pretty much luck the Swagelok benders. The Swagelok documentation rates their benders for a wall thickness of .035-.065 for 516 tube, maybe the wall thickness is too thin and the tube is crushing a little? I may try filling the tube with sand or freezing water in it before I bend it next time. I”m really enjoying your blog, has really helped me out a lot. Do you have any issues with 90 degree bends on 516 .028 wall 4130 tubing flattening out? I am using a Rigid 600 series, model 38038 bender. Looks pretty much luck the Swagelok benders. The Swagelok documentation rates their benders for a wall thickness of .035-.065 for 516 tube, maybe the wall thickness is too thin and the tube is crushing a little? I may try filling the tube with sand or freezing water in it before I bend it next time.

]]> By: Alex Wetmore http://alexwetmore.org/archives/496/comment-page-1#comment-36460 Alex Wetmore Wed, 01 Jun 2011 22:30:08 +0000 /blogs/alex_wetmore/archive/2007/10/02/rack-building-basics-tools.aspx#comment-36460 I mostly use Gasflux rod and flux, but are available from henryjames.com. I mostly use Gasflux rod and flux, but are available from henryjames.com.

]]> By: Adam B http://alexwetmore.org/archives/496/comment-page-1#comment-36437 Adam B Wed, 01 Jun 2011 19:06:00 +0000 /blogs/alex_wetmore/archive/2007/10/02/rack-building-basics-tools.aspx#comment-36437 Cheers Alex. You''ve mentioned sources for the 4130 you''re using, but I didn''t find a discussion of your brazing rod and flux choices. Also, where you get them from. Thanks for the great info! Cheers Alex.

You”ve mentioned sources for the 4130 you”re using, but I didn”t find a discussion of your brazing rod and flux choices. Also, where you get them from.

Thanks for the great info!

]]> By: Alex Wetmore http://alexwetmore.org/archives/496/comment-page-1#comment-18164 Alex Wetmore Mon, 14 Feb 2011 16:24:35 +0000 /blogs/alex_wetmore/archive/2007/10/02/rack-building-basics-tools.aspx#comment-18164 I use Chemtane/Oxy, which is pretty similar to MAPP/Oxy. What you''ve read is true for gas welding, but brazing is not gas welding. Chemtane/Oxy works great for me for brazing. I haven''t tried gas welding with it, but there are no gas welding operations necessary on a bike frame, and few framebuilders do any gas welding. I use Chemtane/Oxy, which is pretty similar to MAPP/Oxy.

What you”ve read is true for gas welding, but brazing is not gas welding. Chemtane/Oxy works great for me for brazing. I haven”t tried gas welding with it, but there are no gas welding operations necessary on a bike frame, and few framebuilders do any gas welding.

]]> By: Dimitris Adams http://alexwetmore.org/archives/496/comment-page-1#comment-18139 Dimitris Adams Mon, 14 Feb 2011 09:45:20 +0000 /blogs/alex_wetmore/archive/2007/10/02/rack-building-basics-tools.aspx#comment-18139 of course you don''t use mapp/oxy...you use oxy/propane...anyway if you know anything about mapp/oxy just let me know. Thanks of course you don”t use mapp/oxy…you use oxy/propane…anyway if you know anything about mapp/oxy just let me know.
Thanks

]]> By: Dimitris Adams http://alexwetmore.org/archives/496/comment-page-1#comment-17845 Dimitris Adams Sat, 12 Feb 2011 12:30:55 +0000 /blogs/alex_wetmore/archive/2007/10/02/rack-building-basics-tools.aspx#comment-17845 First of all I would like to give you congats for your hi-end blog! I am big fan! I am planning to build my first custom touring lugged frame using tubes from Columbus. I would like to ask you something about the brazing method. I asked my welding shop and they told me that the cheapest and easiest method of brazing is using MAPP/Oxy setup instead of Oxy/Acetylene setup. One disadvantage of MAPP i discovered (from web): ” The MAPP/oxygen flame is not entirely appropriate for welding steel, due to the high concentration of hydrogen in the flame - higher than acetylene, but lower than any of the other petroleum fuel gases. The hydrogen infuses into the molten steel and renders the welds brittle. For small-scale welding with MAPP this is not too serious a problem as the hydrogen escapes readily , and MAPP/oxygen can in practice be used for welding small steel parts.” I saw that you are using MAPP. What is your opinion about that. Should I go for MAPP or should I buy an Oxy/Acetylene setup. Thanks in advance. Many thanks also for the information you are sharing with us with your blog. First of all I would like to give you congats for your hi-end blog! I am big fan!
I am planning to build my first custom touring lugged frame using tubes from Columbus. I would like to ask you something about the brazing method. I asked my welding shop and they told me that the cheapest and easiest method of brazing is using MAPP/Oxy setup instead of Oxy/Acetylene setup. One disadvantage of MAPP i discovered (from web):
” The MAPP/oxygen flame is not entirely appropriate for welding steel, due to the high concentration of hydrogen in the flame – higher than acetylene, but lower than any of the other petroleum fuel gases. The hydrogen infuses into the molten steel and renders the welds brittle. For small-scale welding with MAPP this is not too serious a problem as the hydrogen escapes readily , and MAPP/oxygen can in practice be used for welding small steel parts.”
I saw that you are using MAPP. What is your opinion about that. Should I go for MAPP or should I buy an Oxy/Acetylene setup. Thanks in advance. Many thanks also for the information you are sharing with us with your blog.

]]> By: Scott Atwood http://alexwetmore.org/archives/496/comment-page-1#comment-4074 Scott Atwood Wed, 28 Nov 2007 13:19:47 +0000 /blogs/alex_wetmore/archive/2007/10/02/rack-building-basics-tools.aspx#comment-4074 What a great series. I''m looking forward to the other entries. I''m especially curious about painting them. And also the mounting section to the braze-on. Can''t figure that one out, using hollow tubing and all. What a great series. I”m looking forward to the other entries. I”m especially curious about painting them. And also the mounting section to the braze-on. Can”t figure that one out, using hollow tubing and all.

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