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Thread: Lincoln Bullet Welder
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20th July 2014, 06:04 PM #1
Lincoln Bullet Welder
When I was hum 15 or 18 perhaps, if you wanted to get something real big welded, you would try to find someone who owned a "rotary welder". 2-300 kilo monsters, needs a 4 pin 32 amp plug wired up with 6mm cable.
Well I am no longer 18 yet I found a rotary welder real cheap and since I wired up my man cave with 3phase, I am going to have fun with a lincoln 250A DC welder.
To the point of this post ...does anyone know how to set this things up? It has voltage and amps regulation, so...is it like the MIG? Stick welders usually only have amps up and down, that's it. This is a DC generator, so does anyone know or better owns one?“We often contradict an opinion for no other reason
than that we do not like the tone in which it is expressed.”
Friedrich Nietzsche
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20th July 2014 06:04 PM # ADSGoogle Adsense Advertisement
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20th July 2014, 06:52 PM #2GOLD MEMBER
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Jeez your pushing the old memory box now Mark. About 35+ years ago I had one, from memory welding mild steel it was set on about the 40V mark and adjusted your amps to suit, welding stainless and ally used a different voltage, sorry I can't remember them but around 70V mark playing around with the setting you'll find what suits you best. One thing I remember about them, was ear muffs weren't invented then, but should have been with them. Don't fire it up at 8pm unless you want a visit from the constabulary.
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20th July 2014, 07:33 PM #3
So noisy hei? What sort of noise is it? Usual large motor noise or something else?
“We often contradict an opinion for no other reason
than that we do not like the tone in which it is expressed.”
Friedrich Nietzsche
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20th July 2014, 07:47 PM #4
Very loud and whining possibly from the commutator and brushes. Get ear protection, you will need it !
And as far as adjustment goes, it is very much like a mig but more so. You can take the heat right out of a arc and do brilliant stuff on sheet metal, and then crank it it up and use some gouging rods on heavy plate .
Pretty versatile unit but a heavy pig to drag around.
Grahame
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20th July 2014, 08:22 PM #5Pink 10EE owner
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20th July 2014, 09:17 PM #6Novice
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Thanks for raising this topic Marc, as I have picked up some valuable tips
I have just acquired one as well as a part of a large job lot, but have yet to fire to up.I am not sure if I will keep it or not as I have a MIG.
I will be interested to hear any more pros and cons
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20th July 2014, 09:18 PM #7GOLD MEMBER
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I have 2 DC generator welders, one a 275A EMF and the other a 750A SAE 600 Lincoln. You would need to pry them from my cold dead hands to get them.
As Grahame said, they put the A in adjustability. The big SAE Will vaporise 12mm plate with a 5mm E4824 if you crank it anywhere near top amperage and runs 8mm gouging carbons like they were mere 2.5 rutiles. Mind you, it also drags 53A of 3 phase to do it.
Long leads and ear plugs will be your friends although the SAE 600 is not as objectionable as the EMF.
One word of advice, make sure that your direction of rotation is correct.
Parts are all still available and while they are not the most portable or efficient machines, they will kick an inverter's backside as far as performance goes, particularly if you take duty cycle into account.
Yes, I do love mine.
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20th July 2014, 09:28 PM #8GOLD MEMBER
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Keep it!
They will do things that modern welders can only dream of, you can even DC tig weld off them. They compliment a mig beautifully. Never forget that simply by changing electrodes you can weld stainless, low alloy steel, weathering steel, copper, mild steel, cast iron, tool steel, dissimilar metals and hardface. They rarely fetch high prices, so if you can find a spot for it in your workshop, you will not regret it.
They were from an era when welders were built to last and perform day in day out.
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21st July 2014, 08:31 PM #9Novice
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Thanks again for raising this topic Marc and many thanks to Karl and the others for your valuable advice.
I will definitely keep the Lincoln 250 and learn how to use it properly, especially the TIG bit. As a welder I am a good firefighter, but now I am semi retired I am learning lots of new skills thanks to this forum and the university of YouTube.
Best wishes
Mark
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28th July 2014, 02:59 PM #10
Thanks for all the replies. I am now waiting for my Lincoln 250Amp to arrive from Brisbane. I have printed the user manual from the link above, needed a bit of guessing to find the right one but they ended up being all the same. Some useful general information there.
I did find a chap in Sydney that repairs welders and knows a lot about the old DC generators. Apparently the problem to repair them is the brushes that are no longer available according to him. There is a mob in Melbourne that makes any size brushes but at a price. and this things have a set of 16 apparently.
Name is Ashur and phone number is 02 97291127 in case someone needs him.
It may be possible to still find a set of brushes in some obscure corner. if someone knows who can supply a set for a Lincoln DC-250-MK brushes, I'll happily buy them just in case.“We often contradict an opinion for no other reason
than that we do not like the tone in which it is expressed.”
Friedrich Nietzsche
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30th July 2014, 12:12 PM #11GOLD MEMBER
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If you need brushes for them and have no luck then I would contact Ross Broomhall at AWE in Launceston. 03 63 343432 is their number. He is the guru of older welder repair particularly Lincoln gear. I reckon you would get a set out of the states with no dramas provided you have a part number.
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