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http://www.northerntool.com/webapp/w...0405_200390405A man who can't weld is as poorly educated as a woman who can't sew
Reply:20% DC @ 120amps
Reply:I can see a few people having a real need for it but $1400 for asuch a limited use welder isreally steep.Last edited by tresi; 11-01-2009 at 08:56 PM.Tough as nails and damn near as smart
Reply:Yeah the entry price is pretty high for what it is. Then again, Passport migs are pretty expensive too for what they are. For comparison, the Passport's duty cycle is 20% @ 150 amps on 220v and 20% @ 110 amps on 110v.MM350P/Python/Q300MM175/Q300DialarcHFHTP MIG200PowCon300SMHypertherm380ThermalArc185Purox oaF350CrewCab4x4LoadNGo utilitybedBobcat250XMT304/Optima/SpoolmaticSuitcase12RC/Q300Suitcase8RC/Q400Passport/Q300Smith op
Reply:It's really not that hard to convert a conventional mig to run on batteries (if 12, or 24 volt feed motor)You would disconnect the feed motor, trigger switch, and welding power leads from the mig, andconnect to a pair of 12v deep cycle (marine/trolling) batteries hooked in series. Don't use shallow cycle (starting) batteries. Connect the trigger switch to a relay, that powers the feed motor off of theone or both of the batteries. You can use a wire-wound light dimer to control motor speed.I've done this. It works well. Well, I did not convert a mig, I completely built my own wire feeder, butthat's really the only part of the mig that you're using.I also wired the relay such that it would short out the motor once the trigger was released to brake the motor so that it would stop feeding immediately.I can tell you that I get well more than 100" out of this a pair of slightly bigger than car battery marine batteries.A fancier setup would use a 555 to pwm a mosfet to control the motor.Fancier yet would use an microcontroller, and an h-bridge so that you can have it retract the wirejust a bit after releasing the trigger.Cheers, have fun
Reply:I read up on this unit and the killer is the gas. Their is no small gas bottle like the passport and to boot mixed gas is recommended. I think that without a self contained bottle of some sort now I have to hump an external cylinder. Hobart is onto something good here but refinement is needed. The duty cycle really isn't a big deal because how often if ever does anyone weld continuously for 2 minutes straight. The topic is discussed here,quite well and friendly I might add http://www.hobartwelders.com/weldtal...ad.php?t=35648I.B.E.W Electrician and Damn Proud of It !!!! .Virtus Junxit Mors Non Separabit http://www.shrinershospitalsforchildren.org/
Reply:why not just stick it?Jumper Cables- $20Battery- $110+Some coat hangersHick welding system- priceless
Reply:Originally Posted by Sparky#1I read up on this unit and the killer is the gas. Their is no small gas bottle like the passport and to boot mixed gas is recommended. I think that without a self contained bottle of some sort now I have to hump an external cylinder. Hobart is onto something good here but refinement is needed. The duty cycle really isn't a big deal because how often if ever does anyone weld continuously for 2 minutes straight. The topic is discussed here,quite well and friendly I might add http://www.hobartwelders.com/weldtal...ad.php?t=35648
Reply:I have a Passport with the invcluded CO2 bottle but only ran it on CO2 a couple times when I first got it. It runs great on solid wire and CO2, but I run it mostly with fluxcore, since I use it mostly outdoors. I have a bottle of mix gas for it on the truck, but very rarely use the gas. Fluxcore self shield is much better for field welding than solid wire and gas. Faster, more convenient hook-up and no issues with wind messing up the shielding.MM350P/Python/Q300MM175/Q300DialarcHFHTP MIG200PowCon300SMHypertherm380ThermalArc185Purox oaF350CrewCab4x4LoadNGo utilitybedBobcat250XMT304/Optima/SpoolmaticSuitcase12RC/Q300Suitcase8RC/Q400Passport/Q300Smith op
Reply:Originally Posted by razerIt's really not that hard to convert a conventional mig to run on batteries (if 12, or 24 volt feed motor)You would disconnect the feed motor, trigger switch, and welding power leads from the mig, andconnect to a pair of 12v deep cycle (marine/trolling) batteries hooked in series. Don't use shallow cycle (starting) batteries. Connect the trigger switch to a relay, that powers the feed motor off of theone or both of the batteries. You can use a wire-wound light dimer to control motor speed.I've done this. It works well. Well, I did not convert a mig, I completely built my own wire feeder, butthat's really the only part of the mig that you're using.I also wired the relay such that it would short out the motor once the trigger was released to brake the motor so that it would stop feeding immediately.I can tell you that I get well more than 100" out of this a pair of slightly bigger than car battery marine batteries.A fancier setup would use a 555 to pwm a mosfet to control the motor.Fancier yet would use an microcontroller, and an h-bridge so that you can have it retract the wirejust a bit after releasing the trigger.Cheers, have fun
Reply:Originally Posted by DesertRider33We're discussing a mig welder, with included power supply (aka MillermaticXXX), not a wire feeder that runs off an engine drive or other seperate welding power source (aka SuitcaseXXXX). To run a regular mig welder off a car battery, one would need a 12v to 110v inverter and a 110v mig.It appears Hobart has taken the mig + inverter + battery idea and combined it all into one portable box.
Reply:I didn't mean to be offensive and don't take you as offensive either.What you described was how to make a feed motor run off two 12vdc batteries in series (making 24vdc) and use a dimmer to vary the voltage going to the motor and thus the wire speed. I didn't see any mention of how to regulate the voltage for the weld output, so this would be a single-voltage non-adjustable machine, with the voltage progressively decreasing as the batteries wear down. Could it be used for welding? Sure. Would I really want to weld with it on a customer job? Naa, I'll pass, thanks.I was not saying that there is an inverter inside the Hobart machine. All I said was Hobart took the idea and accomplished the same result, all in one machine. I would guess the welder runs on DC input to begin with, rather than taking DC, inverting it to AC and then converting it back to DC. That would be in-efficient.Yes, I do know about the Ready Welder. Basicaly the same idea as this Hobart, except using seperate batteries from any source, rather than internal batteries. Cheaper and more versatile, yes. I'd say the Hobart is probly better suited to actual on the job site welding though, since it is one self contained easily portable unit.I'm not seeking to defend the Hobart machine, nor am I seeking to tear down other ideas. Just comparing them to eachother, since it was brought up.Last edited by DesertRider33; 11-02-2009 at 05:35 PM.MM350P/Python/Q300MM175/Q300DialarcHFHTP MIG200PowCon300SMHypertherm380ThermalArc185Purox oaF350CrewCab4x4LoadNGo utilitybedBobcat250XMT304/Optima/SpoolmaticSuitcase12RC/Q300Suitcase8RC/Q400Passport/Q300Smith op
Reply:Yea, [chuckle] the batteries wearing down has been a bit of an annoyance at times. Though, once I figured out to just leave the battery charger on the batteries, things worked better. What variation there was could be normalized away with wfs adjustment. Adjusting the wfs had an amazing ability to control heat input. This is why, at least in my limited experience, running with a semi fixed, not very adjustable, but mostly diminishing voltage source is not a huge issue.Apparently, the Hobart does have an inverter (in the electrical enginering sense), a proper one.. that doesexactly what's necessary with the input voltage and the desired output voltage and power characteristics. Here's the info I found.http://www.hobartwelders.com/weldtal...ad.php?t=35648In this regard, I stand corrected.Those power electronics would account for the high price.. as if "welder", "mig", and "portable" weren't enough.Cheers
Reply:I would love to see a Passport Plus-2 2 using this type of setup. The Hobart doesn't run very well on straight CO2,only mixed gas.I.B.E.W Electrician and Damn Proud of It !!!! .Virtus Junxit Mors Non Separabit http://www.shrinershospitalsforchildren.org/ |
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发表于 2021-8-31 23:43:14