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Antique Gas Engine Discussion

buzz box (off topic)


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Old 02-14-2005, 10:04:07 PM
Greg Shipley Greg Shipley is offline
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Question buzz box (off topic)

just wondering if anyone has an old welder or buzz box out there that would make a good electrolysis power source.
thanks.

Greg
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Old 02-15-2005, 08:34:32 AM
Chris Curtis
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Default Re: buzz box (off topic)

Most "buzz box" welders are AC and I don't think they will work for this purpose. Also if you do find a DC welder I am not sure it will work either because welders have a duty cycle that is usually only about 20% on a Buzz box type. I think that the welder would only work until it reached the end of its duty cycle then shut off or burn up. (I could be wrong). Most guys I know use a large battery charger to do this . Battery chargers have regulaters and cutouts that prevent the coils from overheating and melting down.
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Old 02-15-2005, 10:22:21 AM
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Elden DuRand Elden DuRand is offline
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Default Re: buzz box (off topic)

It is correct that you must use Direct Current for electrolysis. Buzz-box welders are AC and won't do the trick.

I've decided that small battery chargers, although they work fine, are too slow. I've cheated the junk man by salvaging the transformer and capacitors from an old Hewlett-Packard Winchester disk drive for the purpose.

This one can make up to 30 Volts and up to 20 Amps. It also has the advantage that I don't have to clean the anode as often. As the current falls due to crud buildup on the anode, I simply increase the voltage.

Take care - Elden
http://home.cybertron.com/~edurand/O...ctrolysis.html
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Old 02-15-2005, 12:06:23 PM
Franz Franz is offline
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Default Re: buzz box (off topic)

When it comes to the electrolytic process, MORE is not necessarily BETTER.

You'll be far better served by matching the electrode area to the surface area being derusted than you will going to high voltages and currents. Using more current than is effective merely heats the solution and wasted electricity.

For a power source, check with forklift shops, they often have chargers that have passed their useful life, and cannot be cost effectively rebuilt they will give you, or sel for a few bucks. These chargers are still suitable for electrolytic rust removal.
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Old 02-16-2005, 10:49:02 AM
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Elden DuRand Elden DuRand is offline
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Default Re: buzz box (off topic)

Quote:
Originally Posted by Franzİ
When it comes to the electrolytic process, MORE is not necessarily BETTER.
Franz:

I agree, but it is nice to be able to heat the solution some and have some voltage overhead to keep from having to clean the anode as often.

One thing I did notice is that, when running high current, a nice gloopy froth comes to the top.

Take care - Elden
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Old 02-16-2005, 11:54:27 AM
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Default Re: buzz box (off topic)

The duty cycle of welders is rated at full output. I doubt you are drawing 180 or more amps during an electrolsys process. At any rate, if it doesn't work the worst that will happen is the themal overload will kick out. We even use our BIG welder for testing 24V starters as the open circuit voltage is around 30VDC.
Craig
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