Re: Pipe strengthening longsprings . . . NEW method
[Re: The Beav]
#4376099
03/13/14 11:04 PM
03/13/14 11:04 PM
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Joined: Jun 2010
Posts: 16,382 Iowa
~ADC~
The Count
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The Count
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Iowa
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I agree! Cheap and easy just like me. lol ~ADC~
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Re: Pipe strengthening longsprings . . . NEW method
[Re: Seldom]
#4376104
03/13/14 11:06 PM
03/13/14 11:06 PM
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Joined: Mar 2007
Posts: 1,225 Midland, MI.
Seldom
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I'd suggest not using galvanized pipe for the insert or grind off the galvanizing if you have to use it. Zinc from the galvanizing will not stay in-solution in the molten weld puddle and will precipitate to the center of the tack. This coupled with the spring steel could easily cause a cracking failure of the tack.
Last edited by Seldom; 03/13/14 11:08 PM.
"A few want to know WHY, the majority appear to be satisfied just knowing HOW!" Youtube Channel- SeldomFales
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Re: Pipe strengthening longsprings . . . NEW method
[Re: Seldom]
#4376114
03/13/14 11:11 PM
03/13/14 11:11 PM
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Posts: 7 Northeast Oregon
GrantRichie
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I think that was a good explanation Seldom. You could go with a slightly smaller pipe also to get the new flex points slightly further back. I might see if I can find some 3/4" outside diameter pipe to try. I have 20-30 of the older cast jaw traps that I wouldn't mind doing this to. Might as well get it right before I do all of them. 1/2" pipe is 7/8" OD and 3/4" is 1-1/8"OD. Using a larger OD insert will certainly increase the strength of the springs by moving the bending apex even closer to the spring eyes(shortening the spring) I just got out my calipers to measure the pipe I used. I pulled this pipe out of this building I am sitting in when I replaced the galvanized with PEX, so this galvanized pipe is from 1953. It measures 27/32". That is 1/32" less than 7/8". Is black pipe the same outside thickness?
Last edited by GrantRichie; 03/13/14 11:14 PM.
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Re: Pipe strengthening longsprings . . . NEW method
[Re: Seldom]
#4376121
03/13/14 11:12 PM
03/13/14 11:12 PM
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GrantRichie
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I'd suggest not using galvanized pipe for the insert or grind off the galvanizing if you have to use it. Zinc from the galvanizing will not stay in-solution in the molten weld puddle and will precipitate to the center of the tack. This coupled with the spring steel could easily cause a cracking failure of the tack. It sure is nice having someone who knows about metal contribute! I will pull apart one of my pipe clamps I use for wood working and use some black pipe then.
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Re: Pipe strengthening longsprings . . . NEW method
[Re: Seldom]
#4376126
03/13/14 11:14 PM
03/13/14 11:14 PM
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Joined: Sep 2013
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Mike in A-town
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I think that was a good explanation Seldom. You could go with a slightly smaller pipe also to get the new flex points slightly further back. I might see if I can find some 3/4" outside diameter pipe to try. I have 20-30 of the older cast jaw traps that I wouldn't mind doing this to. Might as well get it right before I do all of them. 1/2" pipe is 7/8" OD and 3/4" is 1-1/8"OD. Using a larger OD insert will certainly increase the strength of the springs by moving the bending apex even closer to the spring eyes(shortening the spring) Seldom, I think he was referring to using a pipe that has a true 3/4" OD. Although I am not sure what "trade size" that would be. 3/8" maybe? Mike
One man with a gun may control 100 others who have none.
Vladimir Lenin
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Re: Pipe strengthening longsprings . . . NEW method
[Re: GrantRichie]
#4376132
03/13/14 11:16 PM
03/13/14 11:16 PM
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Joined: Mar 2007
Posts: 1,225 Midland, MI.
Seldom
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1/2" nominal pipe size is always gong to be 7/8" OD regardless of time & place.
If all you've got is galvanized, use it but grind the galvanizing off before you weld and you'll have no problem.
Last edited by Seldom; 03/13/14 11:16 PM.
"A few want to know WHY, the majority appear to be satisfied just knowing HOW!" Youtube Channel- SeldomFales
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Re: Pipe strengthening longsprings . . . NEW method
[Re: Mike in A-town]
#4376142
03/13/14 11:23 PM
03/13/14 11:23 PM
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Posts: 1,225 Midland, MI.
Seldom
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Seldom, I think he was referring to using a pipe that has a true 3/4" OD. Although I am not sure what "trade size" that would be. 3/8" maybe?
Mike
Yes, I bet you're correct that it was 3/8" nominal pipe size at 3/4" OD.
Last edited by Seldom; 03/13/14 11:24 PM.
"A few want to know WHY, the majority appear to be satisfied just knowing HOW!" Youtube Channel- SeldomFales
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Re: Pipe strengthening longsprings . . . NEW method
[Re: GrantRichie]
#4376162
03/13/14 11:30 PM
03/13/14 11:30 PM
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Mike in A-town
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I've never handled much 3/8" pipe. So I have no idea what the OD is.
Anybody know off-hand?
Mike
One man with a gun may control 100 others who have none.
Vladimir Lenin
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Re: Pipe strengthening longsprings . . . NEW method
[Re: GrantRichie]
#4376182
03/13/14 11:38 PM
03/13/14 11:38 PM
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GrantRichie
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I just looked it up: if you are using black pipe or galvanized pipe 1/2" inside diameter pipe is about 27/32" outside diameter, 3/8" inside diameter pipe is about 11/16" outside diameter. So nothing exactly 3/4". 11/16" might work well though. I might have to make a run to town and get a piece to try.
Last edited by GrantRichie; 03/13/14 11:39 PM.
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Re: Pipe strengthening longsprings . . . NEW method
[Re: GrantRichie]
#4376185
03/13/14 11:41 PM
03/13/14 11:41 PM
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Posts: 1,225 Midland, MI.
Seldom
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Nom. Size (in) O.D. Average I.D. Min. Wall Nom. Wt./Ft. Max. W.P. PSI** 1/8" 0.405 0.249 0.068 0.051 810 1/4" 0.540 0.344 0.088 0.086 780 3/8" 0.675 0.473 0.091 0.115 620 1/2" 0.840 0.602 0.109 0.170 600 3/4" 1.050 0.804 0.113 0.226 480 1" 1.315 1.029 0.133 0.333 450
"A few want to know WHY, the majority appear to be satisfied just knowing HOW!" Youtube Channel- SeldomFales
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Re: Pipe strengthening longsprings . . . NEW method
[Re: ~ADC~]
#4376219
03/14/14 12:08 AM
03/14/14 12:08 AM
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Joined: Sep 2013
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Mike in A-town
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... I'm not sure but you all may be over complicating it. lol I'll bet you can get 10' of conduit in a size that will work just fine for like $2... I had considered that, but I think EMT would crush. And rigid is the same size as water pipe. Last time I bought a stick of 1/2" rigid it was $13 at Lowe's. LOL Mike
One man with a gun may control 100 others who have none.
Vladimir Lenin
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Re: Pipe strengthening longsprings . . . NEW method
[Re: GrantRichie]
#4376230
03/14/14 12:14 AM
03/14/14 12:14 AM
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Joined: Sep 2013
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Mike in A-town
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Schedule 40 and 80 have the same OD. The ID on 80 is smaller. At least it is with conduit. You lose wire fill capacity on a given size with 80 compared to 40.
Mike
One man with a gun may control 100 others who have none.
Vladimir Lenin
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Re: Pipe strengthening longsprings . . . NEW method
[Re: GrantRichie]
#4376265
03/14/14 12:39 AM
03/14/14 12:39 AM
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Traps1982
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Wow!! Excellent, excellent thread!! I got a couple of Vics that I am going to do this with.
They are COYOTES! Not "coy-wolf" not "coyote-wolf hybrid". Just plain old coyote
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Re: Pipe strengthening longsprings . . . NEW method
[Re: jwr]
#4376503
03/14/14 07:47 AM
03/14/14 07:47 AM
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Posts: 4,832 central arkansas
the Blak Spot
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Wow! I was told never to weld cast as it could cause large pits and flake off after it snaps a few times. I never did try it. I was using a 220 stick welder. Are those laminations done with wire welder on the cast jaws? Great job! Looks excellent Spot, I got a wire welder if you need it. Thanks!
the just shall live by faith
member FTA, ATA, EAFT 1776 - the year we told a tyrant we weren't to be under a dictator Caveat ater macula
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