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Uses for older motor/generator welders?

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John in MA

12-30-2000 14:05:07

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Can anybody tell me the advantages/disadvantages of the old motor/generator type arc welders? I've seen a bunch around here with high currect ratings going for just about scrap value. At least to me it seems like a great deal if you have the space, but I only know the newer buzzbox style.

Thanks

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John in MA

01-01-2001 11:25:29

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Re: Uses for older motor/generator welders? in reply to John in MA, 12-30-2000 14:05:07

Thanks for the help, guys. There's a person around here who's selling one for $50 if I get it out of his garage. I haven't seen it yet, but he said it's a 230V model that sits about 4 feet high on a hand cart. Does this sound familiar? He seems to have forgotten the brand.

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Joe Evans

12-30-2000 20:39:40

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Re: Uses for older motor/generator welders? in reply to John in MA, 12-30-2000 14:05:07

Absolutely obtain one of these machines up if you can. The arc is rock steady and duty cycles are very high. Plus they are reliable as can be. My experience has been with Lincoln SAE 300s and 400s and some Hobart ML304s. The company I work for has moved away from using them in the field as they are a major pain to transport around, and the start-up in rush current characteristics of these critters raise cain with some of the ground fault systems in our customers' plants. These machines are made to hook up and leave parked for 15 years in the corner of your shop and if you have to spend $50 per year on them for maintenance they're costing you money!

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kathleen brydon

07-31-2005 12:18:49

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Re: Re: Uses for older motor/generator welders? in reply to Joe Evans, 12-30-2000 20:39:40

we have a pre-ww2 hobart welder. runs on 220 volts. was wondering if anyone has any idea of its worth. as we are too old to run it anymore. we are located in south portland maine.
thank you kathleen

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Greg D.

12-30-2000 17:17:19

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Re: Uses for older motor/generator welders? in reply to John in MA, 12-30-2000 14:05:07

One reason I`ve heard kicked around is the older machines had copper windings where as the newer machines, even the motor generator`s are using aluminum windings. I also personally think the more gadgets you have to have on a machine, the less stable the arc. Look at the old machines. No a/c power outlets. EVERYTHING is pure d/c output. I`ve never run the machines T_Bone speaks of, but I`m not trading my Millers for anything, personal prefference only.

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Burrhead

01-01-2001 08:47:55

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Re: Re: Uses for older motor/generator welders? in reply to Greg D., 12-30-2000 17:17:19

We have one old Miller here that must be ac/dc because when there's a power outage that goes on and on like when hurricanes have hit we power the house and shop with it.

It is a very sweet welder to use plus it will power a 2600 sq ft house with 2 central 3 ton A/C units and 4 color tv's, 2 deep freezers and 1 refrig plus all the electric tools in a farm shop for about 3 gals of gas per 24 hour day. It only has to idle to run this stuff.

In other words when the electrical power is off we don't miss a beat once the welder is cranked off.

It's awful handy to pull out to broken down equipment so we can use electric lights, drills and side grinders even if there is no welding to be done.

I would vote to get the gas powered welder even if he uses it very little.

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T_Bone

12-30-2000 17:05:58

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Re: Uses for older motor/generator welders? in reply to John in MA, 12-30-2000 14:05:07

Hi John, I really don't understand all the reasons why the older machines were better than what there building to day but the arc stability was very noticable better, 100%. The finest machine I ever used was a Linde and a close tie was a P&H. I never found any machine that could out weld either one of these machines. The Linclon Pipeliner is a very good machine but can't hold a candle to a Linde or P&H.

Another noticeable difference was welding rods. Chremtron made the best 7018, Linclon the best 6010 or P5 and 7024, Hobart the best 6011.

T_Bone

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Franz

12-30-2000 14:51:40

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Re: Uses for older motor/generator welders? in reply to John in MA, 12-30-2000 14:05:07

Pure sweet arc, I own 5 Lincoln MG sets from gas drive to 225 amp "torpedo", and every one has the sweetest arc quality ever made. I started with a buzz box, and worked my way up. I'd rather run an MG welder than any other machine I own, and that includes P&H transformer/rectifier types. MG welders are also safe to use under water, if you ever get that nuts.

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Old Sparky

12-30-2000 18:49:49

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Re: Re: Uses for older motor/generator welders? in reply to Franz, 12-30-2000 14:51:40

Many of the motor-generator types are three phase, so consider that in a purchase decision. The reason that they are safe under water is that the output is totally from the generator-the output has no electrical relationship with the nations power grid. On a transformer type, the primary and secondary are tied together at one end of both windings to meet UL standards, so the connection to the power grid does exist..

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Fred OH

01-02-2001 12:43:39

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Re: Re: Re: Uses for older motor/generator welders? in reply to Old Sparky, 12-30-2000 18:49:49

Check that nametag, not only were they three phase, some of them were 440 volt three phase. I went to a shop sale once and there was one selling at the sale and it had 440 volt marked on it with soapstone. I moved right on. A friend of mine bought it and took it home and plugged in right in to 240 single phase. I think he was the only one who bid on it. You don't reckon? L8R----Fred OH

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