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Welding Shop

Hobart DC 200 A stick welder. Old

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Old 03-06-2014, 02:20:25 PM
lajs lajs is offline
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Default Hobart DC 200 A stick welder. Old

I need help with finding a replacement Rheostat. OHMITE 8.25 Ohm. Ser No 5305

This is an old machine coupled to a Wisconsin 2 cyl gas engine.
I contacted Galco - They want $1000!! The welder is probably not worth that.
Can they be rebuilt?
I have pictures of the Rheostat.
Can anyone help.
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Old 03-08-2014, 05:45:25 PM
dkamp dkamp is offline
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Default Re: Hobart DC 200 A stick welder. Old

It can probably be rebuilt- you'd need to find someone who has ni-chrome steel wire of appropriate size for the rheostat.

Another way to do it, and it's rather crude, but very effective... is to find 8 or 9 1-ohm resistors of sufficient power level, and wire that in place, with a jumper wire, and just select connection points between resistors to give you the adjustment... if you need finer adjustment, put 8 1-ohm resistors in series, with one 1/2 ohm and one 1/4-ohm resistor, and use two jumpers... one to bypass the 1-ohm resistors, and one to bypass the half or quarter-ohm values.
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