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Old 01-09-2011
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Gasless mig

Is a gasless mig welder with 125 amps strong enough to weld suspension brackets? Or do I need to dave up and get one with gas? I am going to redo the suspension on my air bag truck but nuthing major. Just link bar tabs and etc?
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Old 01-09-2011
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Are you using flux core wire?

Also does your welder have the hookups for gas?
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Old 01-09-2011
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no gas hook up. And yes im using fluxcore.
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Old 01-09-2011
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On the inside of your welder it should have a chart of the thickness of steel you can weld with it using Flux-Core. Just figure out what thickness of steel you're going to be using and use that chart to see if your machine can handle it or not.
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Old 01-09-2011
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125 amps, or 125 volts? Big difference. Does it plug into a regular household outlet? If thats a yes, then I would say no personally. Also if it is a cheaper one then they usually put out alot less than their advertised output.

We have a little 120 Volt Miller at work that I use for packing to the job sites, and the little 1/4 inch work I have done, it works OK. But I would have liked to see alot more penetration personally. The machine is rated to do up to 1/4 I think, but it just doesn't seem to lay in quite enough.

But if you plan on doing more suspension work, I would just save up for a bigger one.
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Old 01-09-2011
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Quote:
Originally Posted by chainfire View Post
I would have liked to see alot more penetration.
That's what she said.
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Old 01-10-2011
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Or just get a stick welder.
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Old 01-10-2011
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..or weld a larger surface area if possible. It *can* do it if you really need it to, but to handle the bare minimum means running the machine at its maximum capacity so you're only going to be able to weld at about a 10% duty cycle, so even if it is handling it your machine is going to run warm and it might take a while. Being that its a 120v unit also brings challenges of its own as a standard outlet isn't designed to handle the power. I don't know if you've run into issues yet, but it may not be a bad idea to upgrade an outlet in your shop to 12 ga wire and throw a 20 amp plug/breaker on the setup to handle the welder better.

125 amps is pretty small, but I did build my first utility trailer 15 years ago with a ~130 amp flux core 120v Lincoln and its still holding out fine (all 1/4" construction and it regularly sees heavy gravel/dirt loads). Its not the most ideal setup, but if you prep everything well and have a little bit of patience then you should be ok. Do some test welds on similar material and post up some pics so we can see how they're looking. LR
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Old 01-10-2011
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Ok I will have to get some wire and should I get .035 or .030 the welder can run either? And wait on this 9'' of snow we just got to go away. Then I will weld a T joint and post some pics.
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Old 01-10-2011
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.030 should be fine, I run it through my 185 Miller and its fine up to 1/4". I don't know if fluxcore is any different, but you might get a better bead running slightly thinner wire in the smaller machine. Check the specs though, as it might recommend .035 for higher settings. LR
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