Lincoln-Pak 100 Mig conversion Quesion of regulator type

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Hi, I'm new to welding, just got my Linc weld-pak 100 with the mig setup.  Included in the  "Mig conversion" is a "gas regulator with gauge"  Now this gauge just measures the pressure in the tank, and does not vary the outflow of this gas depending on the weld I am doing.  Do I need to adjust the gas flow with respect to the wire I am using and/or the type of welding I am doing ( metal type, thickness, etc.)  ?    I ordered a Victor gauge setup; a guage to tell me tank pressure, the other to tell me the rate of outflow, which can be adjusted. Is this a waste of money?  Should I just stick with the Lincoln gas regulator, having a single PSI gas output, or is it better to adjust the gas flow?Thanks so much!MattLast edited by Mr matt; 08-23-2007 at 08:56 PM.Reason: change title to be more appropriate
Reply:Is this what you have ? http://www.mylincolnelectric.com/Cat...eet.asp?p=7115It is a regulator.Anything worth doing is worth doing RIGHT
Reply:Thanks, but this is what I have, single gauge showing tank pressure, fixed outflow at bottom          Thanks!Matt
Reply:That one is factory pre-set...just open your bottle wide open and it should be alright.Anything worth doing is worth doing RIGHT
Reply:I ordered a Victor gauge setup; a guage to tell me tank pressure, the other to tell me the rate of outflow, which can be adjusted. Is this a waste of money? Should I just stick with the Lincoln gas regulator, having a single PSI gas output, or is it better to adjust the gas flow?
Reply:I had one of those when  I bought my SP100.  Went through an 80 cu  bottle the first day.  Found out it was preset to 35 cfh.  Took the regulator back and got an adjustable one.  Use 1/2 the c/25 now.  10 to 15 cfh is enough.  Any more is just $ out the window.DavidReal world weldin.  When I grow up I want to be a tig weldor.
Reply:Thanks for the info!   Yea, I like to know what the outflow is....  In reading around on the site here, it seems people do adjust the flow with their Lincoln weld pak 100 when they are welding heavier metal.And thanks for giving me some starting air flow pressures to work with, I was going to be asking for that.  I will primarilyl be working on car panels, so the metal is not that thick, and was wondering on the needed pressure to work with this metal thicknessThanks again.Matt