I'm having an issue with welding the base plates to the floor of the vehicle. I'm TIG welding the whole cage and when I try to weld the 1/8th in plates to the floor I'm getting some sort of blowback that extremely contaminates my tungsten. My question is, is this caused by body filler that is still trapped between floor panels and if so what is the best most effective way to remedy this problem. Any form of dip or blasting are not really an option. Any help would be appreciated.
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Roll cage welding issues
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Bolt it down.
Miller Bobcat 225NT onan
Millermatic 211
Spoolmate 100
(Retapped to fit regular mig tips)
Work better & less parts to stock.
Miller 130xp
T/A Dragster 85 (portability 11 pounds)
Oxygen/Acetylene torch set 50'
2. 4-1/2" grinders
1. 9" grinder
14" Makita chop saw
1/2" Aircat impact gun 900#
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You need to have clean shiny metal back about 2 inches from the weld area...
TIG is very intolerant of unclean metal..
can you post some pics..??.
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The more you know, The better you know, How little you know
“The bitterness of poor quality remains long after the sweetness of low price is forgotten”
Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...
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Roll cage welding issues
Governing body dosent care but my boss wants it welded preferably TIG. The problem mainly occurs where panels overlap and are spot welded together trapping whatever seam sealer the manufacturer used between the panels. I ended up pulse miging the plates to the floor. Just not overly fond of pulse mig as I consider myself a TIG welder when it comes to most automotive stuff. Base plates must be 2sq in at min. and 6sq in at max. per nasa spec
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Originally posted by bigtow30t View PostI always thought that they were to be bolted down. The base plate has to be a certain Sq in also, then the backing plate Needs to be a different size (bigger or smaller) or it would sheer right through the floor board
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Originally posted by Cgotto6 View PostI prefer to mig the base plates to the tub when I do cages, it tends to have less contamination issues. Does the governing body mandate tig?
Are you cutting holes through the plates so you can drop the cage down to weld all the way around... then raising the cage all the way up into position to final weld..??
Like this..
.
*******************************************
The more you know, The better you know, How little you know
“The bitterness of poor quality remains long after the sweetness of low price is forgotten”
Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...
My Blue Stuff:
Dynasty 350DX Tigrunner
Dynasty 200DX
Millermatic 350P w/25ft Alumapro & 30A
Millermatic 200
TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam w/ PowerMax-1000
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Are you cutting holes through the plates so you can drop the cage down to weld all the way around... then raising the cage all the way up into position to final weld..??
Like this..
http://www.youtube.com/watch?v=uxUIx3vZfRA[/QUOTE]
It's actually a 4 point roll bar in a old Porsche, was able to completely remove and weld outside the car and reinstall, however this is the second time I have had this issue with 2 different vehicles. So I was just hoping to get a little advice. I do appreciate all the advice I have gotten
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Porsches and other German stuff are liberally shot full of and coated with "Body Schutz" ..... murder to remove and stinky when heated..
have run into that many times...
We were lucky enough in the 70s and early 80s while working on Porsche 934 & 935 racers.. that we got tubs that were "body in white" with none of that rubbery urethane coating...Last edited by H80N; 11-15-2014, 08:07 AM..
*******************************************
The more you know, The better you know, How little you know
“The bitterness of poor quality remains long after the sweetness of low price is forgotten”
Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...
My Blue Stuff:
Dynasty 350DX Tigrunner
Dynasty 200DX
Millermatic 350P w/25ft Alumapro & 30A
Millermatic 200
TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam w/ PowerMax-1000
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Is it happening when u were finishing the last weld? It could be the air trapped between the 2.. and when you try to seal it up the trapped air is blowing a hole out onto your tungsten. . If its happening right away.. it is probably just dirty
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Roll cage welding issues
It's happening at random so I believe it is the body seam filler. It has done it on the 2 2015 project cars I have caged as well as the mid to early 80's Porsche I just did. The only consistent thing is that I was not the person who was tasked to clean the cars just welding the cage at which point there is only so much I could do but any more cages will fall strictly on me this time so I would like to save my self the heartache and clean the **** out of the cars. Thanks for the info.
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Any chance of posting some pics..??
what model and age Porsche??
BTW..newer models of VW/Porsche Audi do have some galvanized panels... As well as LOTS of body/seam sealant & shutz....Last edited by H80N; 11-21-2014, 05:22 PM..
*******************************************
The more you know, The better you know, How little you know
“The bitterness of poor quality remains long after the sweetness of low price is forgotten”
Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...
My Blue Stuff:
Dynasty 350DX Tigrunner
Dynasty 200DX
Millermatic 350P w/25ft Alumapro & 30A
Millermatic 200
TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam w/ PowerMax-1000
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