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RE: [TCML] pole pig ballasting
Garry,
Where are you located with that giant PIG, SOW that's the one that's bigger
than you yes? Anyway, I have a Lincoln Tombstone 225 which is old enough to
be copper wound - works great. I'll sell it for $75. It will tame that
beast. Shipping is an issue these days! If you must drop the voltage, use
the arc welder (in series of course) on the output of the variac if I
remember correctly. I have several ballasts now. I sold my Thunderbolt too.
You could stack 3 of those variacs on the same shaft. Then we revisit the
balancing chokes though. The Lincoln won't pass much more than 50-60 amps at
full tilt though so 2 variacs would be ideal.
I'm in So. Ca.
Jim Mora
-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of Jon Danniken
Sent: Wednesday, July 16, 2008 1:37 PM
To: Tesla Coil Mailing List
Subject: Re: [TCML] pole pig ballasting
----- Original Message -----
From: "garry neeley"
>> Which brings me to the question,
>> how could I ballast the pig to only draw 30 amps @240v. (on a budget)
Buy an 240VAC arc welder on Craigslist; around here they go for between
$50.00 and $100.00. If you get a Miller (Thunderbolt), it has an infinitely
adjustable shunt, whereas the Lincoln ("tombstone") units just have
different taps; you might find a Montgomery Wards or Century unit; they also
work fine, and are often a lot cheaper due to not being a "brand" name. The
bonus is that you also get an arc welder to play around with.
The way you hook it up is to short the "Work" and "Electrode" outputs on the
front of the welder, then wire the 220VAC feeding the welder in series with
your variac. Adjust the shunt or use a different tap until you get the
required current limiting.
Jon
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