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I have a Miller Bobcat NT with the kohler engine, got it for a great price at an auction, needed to replace a capacitor and it is running great.Now i want to run a mig off it, for yard building and fencing on some farms around here, will be running gasless wire through it predominantly.I have a 250A Mig machine, but it's too big to move around constantly, so looking at a Miller 12vs (there's one 2nd hand for a fair price not too far)or a small mig machine like a Kemppi Miniarc Mig Evo. What would be the pros and cons of each? If i remember correctly, the Miller will have a higher duty cycle. Once i get the settings dialed in it probably won't need to be changed much for what i'll be doing.Cheers
Reply:Pros for the Kempi, can plug it in and not run the Bobcat, very easy setup.Bobcat is 100% duty cycle welding 200 amps, Kempi is 35%. But the Kempi is 60% at 160 amps, not bad at all.Dave J.Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~ Syncro 350Invertec v250-sThermal Arc 161 and 300MM210DialarcTried being normal once, didn't take....I think it was a Tuesday.
Reply:Kemppi won't run very well with the bobcat not running. No power where i'll be using it, hence the question about running it off the bobcat
Reply:
Originally Posted by moose2367
Kemppi won't run very well with the bobcat not running. No power where i'll be using it, hence the question about running it off the bobcat
Reply:How many watts is the generator ? Many of the older bobcats were 5000 or 8000 watts ,newer ones are 9000 10,000 watts. From what I've heard the kemmpi is a nice machine, but it might not run on a lower powered genset. Good luckAirco 250 ac/dc Heliwelder Square waveMiller Synchrowave 180 sdMiller Econo Twin HFLincoln 210 MPDayton 225 ac/dcVictor torchesSnap-On YA-212Lotos Cut60D
Reply:8kva.Was running a mates Kemppi on a 6kva Mosa diesel welder without issue.
Reply:it's really a question of power vs portability.12VS is 35 pounds, plus spool of wire, leads and handpiece, keep in mind the welding cable needed to run a 12VS is much heavier (and more expensive) than a 220-240volt extension lead is and you need two of them (one for the feeder, one for the earth).35 lb for the feeder.10 lb for a handpiece10 lb for the wire spool of wire, 12VS can use 33lb spool's but lets go with 10 to make it fair since the Kemppi is limited to 10lb spools.52 lb 200 feet of #1 50mm sq welding cable (100 each for earth and feeder), you could get away with #3 but that would only give you 30% duty cycle, to get a duty cycle advantage you need the larger cable.So you'd be at almost 107lb of gear to run a suitcase, 130 if you run 33lb spools.The Minarc MIG evo 200 is a 28 pound machine with handpiece and earth, plus wire and 100 foot 240 volt extension lead makes it about 45lb of gear to carry out.One advantage the 12VS will have is that is can use 12inch spools, so you'll get a better price on wire, and have more options, for example i've never been able to find -8 seismic rated self shield wire in an 8 inch spool, so you'll likely be limited to -11 or -G like Lincoln N212 unless your willing to respool onto 8 inch spools.However if you are going to go with a compact MIG the Kemppi minarcmig EVO is the way to go, the power stations I work at use them alot for internal boiler work specifically because they are very lightweight and handy but also very durable, some of them have thousands of pounds of wire through them without issue, and I can tell you I'd much rather drag one of them around than a suitcase having had to do both through boilers for years.
Last edited by ttoks; 20 Hours Ago at 07:38 AM.
Reply:Good points, now i have to convert pounds to kg, lol.I already have 2 x 20m or 60ft(ish) of 50mm2 cables.A lot more to drag around compared to 1 long extension lead. I was leaning towards the Miller, more for duty cycle, but i wouldn't be running the Kemppi at it's max hardly ever anyhow, most stuff will be 2.5mm to 3mm, with occasional heavier stuff.Another couple of migs i looked at, but haven't seen in person, is a Weldclass or Weldforce, both designed to be used from a generator too. https://www.weldclass.com.au/categor...multi-function
Reply:
Originally Posted by moose2367
Good points, now i have to convert pounds to kg, lol.I already have 2 x 20m or 60ft(ish) of 50mm2 cables.A lot more to drag around compared to 1 long extension lead. I was leaning towards the Miller, more for duty cycle, but i wouldn't be running the Kemppi at it's max hardly ever anyhow, most stuff will be 2.5mm to 3mm, with occasional heavier stuff.Another couple of migs i looked at, but haven't seen in person, is a Weldclass or Weldforce, both designed to be used from a generator too. https://www.weldclass.com.au/categor...multi-function
Reply:Haha, i didn't even look to see where you were.Using that Kemppi the other week, we never hit the duty cycle, so should be right. We did 9klm of elec fence, and at each barbed fence we met, as we were splitting paddocks up, we did end assemblies, gates and water troughs. I cut up 4 or 5 bundles of cattle rail and 5 x 50 SHS, so a fair bit, especially when then were 4 way gates.The Kemppi might be the way to go
Last edited by moose2367; 19 Hours Ago at 07:57 AM.
Reply:
Originally Posted by moose2367
Good points, now i have to convert pounds to kg, lol.I already have 2 x 20m or 60ft(ish) of 50mm2 cables.A lot more to drag around compared to 1 long extension lead. I was leaning towards the Miller, more for duty cycle, but i wouldn't be running the Kemppi at it's max hardly ever anyhow, most stuff will be 2.5mm to 3mm, with occasional heavier stuff.Another couple of migs i looked at, but haven't seen in person, is a Weldclass or Weldforce, both designed to be used from a generator too. https://www.weldclass.com.au/categor...multi-function
Reply:I can tell you that if it was me, I'd be running something like the Kemppi or some other small compact MIG for that, the way I see it the day of the suitcase is almost dead except for a few small niche applications, 99% of the time I think if you need portability, you're better off with a smaller generator and a portable MIG or a little caddy if you gotta run stick.
Reply:Had considered the Unimig, but it says 11kva generator. Plus they never specify whether it needs to be an inverter generator. The bad thing about the bobcat and the 240v machine, is it runs at high idle as soon as it's plugged in and turned on, whereas it should only do that with the suitcase when actually welding, something i forgot to mention earlier.My 250A mig is a Jasic, who make Unimig, got it brand new in 2009 and have done a ****load with it, never had a problem and a mate who is a boiley liked it ore than his small Lincoln.
Reply:
Originally Posted by ttoks
I can tell you that if it was me, I'd be running something like the Kemppi or some other small compact MIG for that, the way I see it the day of the suitcase is almost dead except for a few small niche applications, 99% of the time I think if you need portability, you're better off with a smaller generator and a portable MIG or a little caddy if you gotta run stick.
Reply:
Originally Posted by moose2367
Been thinking along those lines too, sell the Bobcat and get a diesel generator, i have a caddy welder, then get a compact and it's about all i'd need. Got my 250A machine and and ac/dc tig for in the shed.Looks like you changed my mind
Reply:Sounds like it's the go.I should make few $ on the bobcat, got it for just over a grand delivered, then just under $700 for 40m of cable.Got someone who wanted to buy it already just hadn't thought of a price Sent from my SM-G975F using Tapatalk
Reply:
Originally Posted by moose2367
Had considered the Unimig, but it says 11kva generator. Plus they never specify whether it needs to be an inverter generator. The bad thing about the bobcat and the 240v machine, is it runs at high idle as soon as it's plugged in and turned on, whereas it should only do that with the suitcase when actually welding, something i forgot to mention earlier.My 250A mig is a Jasic, who make Unimig, got it brand new in 2009 and have done a ****load with it, never had a problem and a mate who is a boiley liked it ore than his small Lincoln.
Reply:
Originally Posted by moose2367
Sounds like it's the go.I should make few $ on the bobcat, got it for just over a grand delivered, then just under $700 for 40m of cable.Got someone who wanted to buy it already just hadn't thought of a price Sent from my SM-G975F using Tapatalk
Reply:
Originally Posted by moose2367
I have a Miller Bobcat NT with the kohler engine, got it for a great price at an auction, needed to replace a capacitor and it is running great.Now i want to run a mig off it, for yard building and fencing on some farms around here, will be running gasless wire through it predominantly.I have a 250A Mig machine, but it's too big to move around constantly, so looking at a Miller 12vs (there's one 2nd hand for a fair price not too far)or a small mig machine like a Kemppi Miniarc Mig Evo. What would be the pros and cons of each? If i remember correctly, the Miller will have a higher duty cycle. Once i get the settings dialed in it probably won't need to be changed much for what i'll be doing.Cheers
Reply:
Originally Posted by danielplace
A 12VS is still one heck of a huge feeder. Pretty sure for what you describe you want the 12VS will be almost too big. Have you personally seen a 12VS. One heck of a big torch on them usually too.The Kempi needs less than 16 amp. It is fused at 16 amp. It recommends a 5500 watt or more genset.https://www.kemppi.com/en-US/offerin...inarc-evo/pdf/
Reply:The big advantage to small/suitcase is you run off a generator When big welders I had 50 foot welding cords and 15 foot gun help. Also a Miller gasoline welder too.Today a have a HF 170 and a generator works great.Dave
Originally Posted by moose2367
I have a Miller Bobcat NT with the kohler engine, got it for a great price at an auction, needed to replace a capacitor and it is running great.Now i want to run a mig off it, for yard building and fencing on some farms around here, will be running gasless wire through it predominantly.I have a 250A Mig machine, but it's too big to move around constantly, so looking at a Miller 12vs (there's one 2nd hand for a fair price not too far)or a small mig machine like a Kemppi Miniarc Mig Evo. What would be the pros and cons of each? If i remember correctly, the Miller will have a higher duty cycle. Once i get the settings dialed in it probably won't need to be changed much for what i'll be doing.Cheers
Reply:
Originally Posted by ttoks
That is the minarc 180, Kemppi's small TIG welder, the MinarcMig 200 will defiantly blow a 16 amp 240 volt fuse, at max output they really need to be hooked up to a 32 amp 240 volt circuit.
Reply:You can't compare TIG amps to MIG amps... arc voltage on MIG is significantly higher, so it uses more overall power.You will always need a bigger genny or breaker, amp for amp, for MIG than you need for TIG.Murphy's Golden Rule: Whoever has the gold, makes the rules. |
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发表于 2021-10-26 15:51:16