I just bought a micro torch!

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I picked up a used but great condition Micro Torch with regulators. I am going to be welding on motorcycle gas tanks, generator gas tanks, car gas tanks, so this torch IS a Godsend for those things! It welds thin metal excellently! But there's a problem.I used them for the first time today, and while welding some 1/16" metal the torch suddenly surged and blew out. So I restarted it, and welded, and it blew itself out again with a surge. When I turn the acetylene flame on (With no oxygen) I will watch it periodically surge, so I do not think it is the oxygen. It is like someone is instantly turning the gas pressure up. I can't find any info on these regulators on the net. The fuel regulator says: "Victor Model MR-110P" and stamped into the casing: "Model No. 286.54070 Made in USA 3-74"The oxy regulator says: "Victor Model MR-100P" and stamped into the casing: "Model No. 286.54060 Made in USA 3-74"The handle says: "Victor Model M-175" and it has a "O" size torch tip. Help!Last edited by tundrawolf; 05-15-2010 at 12:40 AM.
Reply:A used torch like that, I would have rebuilt. Take both the torch and regulators to a competent shop, then you know that you'll be good to go.City of L.A. Structural; Manual & Semi-Automatic;"Surely there is a mine for silver, and a place where gold is refined. Iron is taken from the earth, and copper is smelted from ore."Job 28:1,2Lincoln, Miller, Victor & ISV BibleDanny
Reply:That is good advice. I will call around. Do you know if 3-73 is the date?
Reply:I don't know.City of L.A. Structural; Manual & Semi-Automatic;"Surely there is a mine for silver, and a place where gold is refined. Iron is taken from the earth, and copper is smelted from ore."Job 28:1,2Lincoln, Miller, Victor & ISV BibleDanny
Reply:1, clean the tip2, check & replace o rings3, have a helper watch the gagues & figure out what is happening from there
Reply:surging is caused by a messed up diaphragm in the regulator.  some one it the past must have torqued it way too tight, and that will destroy the regulator causing surging.  you will probably need a new regulator.hope it helps
Reply:Check with these guys. They can tell you if it's cost effective to rebuild that reg vs replacing it.http://www.regulatortorchrepair.com/repairservices.php.No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:your dancing with death if your going to try and weld used gas tanks.Vantage 500's LN-25's, VI-400's, cobramatics, Miller migs, synch 350 LX, Powcon inverters, XMT's, 250 Ton Acurrpress 12' brake, 1/4" 10' Atlantic shear,Koikie plasma table W/ esab plasmas. marvel & hyd-mech saws, pirrana & metal muncher punches.
Reply:Originally Posted by Dualieyour dancing with death if your going to try and weld used gas tanks.
Reply:Dualie and Bistineau---From what I've seen over the last 5 years on this forum,regarding all manner of ignorant comments and ways to weld fuelrich tanks---it's pointless to discuss. The driving force is to do it NOW, do it CHEAP, do it FAST.Seeing anecdotal comments by some that 'W'all I've dun itthis way many times (exhaust gas, water filling, flashing offthe tank vapor, dump in some dry ice, etc.) without a problem....leads them and countless others to think that all these ways are proven to be 'safe'This is the same logic which affirms that one can speed thru red lights and stop signs, numerous times--without a problem....so that's 'safe' too!There's a particular blend of physics and chemistry involved with tank weldingwhich most are totally ignorant about--and apparently wish to remain so.Myself and others have repeatedly discussed, outlined--recognized,approved methods of this hot welding. We're a very small minority.I've done over 1500 tanks with a 'pop' and know how to make anytank either blow or not blow......the idiots don't know and don't care.Last edited by dave powelson; 12-16-2012 at 09:26 PM.Blackbird
Reply:tundrawolfThis is from a Victor Apparatus & Equipment Master Catalog - 1986.These are catalog part numbers.Mini Welding Kits:  Apparently there are variants.510 / 0384-0142200 / 0384-0143520 / 0384-0144- - - / 0384-0145  -  Micro Torch Kit [not illustrated]300 / 0384-0146M-175 Miniature Torch Body   0382-0103Originally the set had 3 tips. A  .009  -  0326-0010 B  .015  -  0326-0011 C  .021  -  0326-0012Regulators: there is only one Oxy. listed, but four Acet.   Oxy   MR  100P-540  Mini     0780-9001Acet   MR  110P-510     "      0780-9021Acet   MR  110P-200     "      0780-9022Acet   MR  110P-520     "      0780-9023Acet   MR  110P-300     "      0780-9024Too many notes, I have to put my ear plugs back-in;I hope this helps.Opus
Reply:http://victortechnologies.com/IM_Upl...rts%20list.pdf