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Re: Ryan's Coil

Original poster: "Jason Johnson by way of Terry Fritz <twftesla-at-uswest-dot-net>" <hvjjohnson13-at-hotmail-dot-com>

Put your MOTs in an oil bath. Non-dtergent SAE 30 works great. Use the
cheapest stuff you can get because it doesn't contain any extras that are
supposed to protect your engine better, but really just lower the dielectric
strength in our case. I put all my MOTs in an oil bath that will be used for
anything more than doorstops and this increases the duty cycle from around
10 percent (i.e 1 minute on then 9 minutes off etc.) to about 100 percent,
meaning that I could run them all day without a problem. This will vary of
course if your have one quart of oil or 2 gallons, but you won't have to
worry about the MOTs overheating.

Jason Johnson

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, February 06, 2001 10:40 PM
Subject: Ryan's Coil

> Original poster: "Ryan Ries by way of Terry Fritz <twftesla-at-uswest-dot-net>"
> Hey again.  We took some photos of the coil tonight, so hopefully I'll be
> able to show them to the list this week.  The coil often strikes the
> (6.5'), and has hit a grounded object over 7 feet away - with only 4.8 kW.
> But holy geez, do those MOTs get hot... they start smoking after only 30
> seconds or so.  And they're solid metal, so it takes em' forever to cool
> down.  Oh well...   Also, strikes to the primary are basically constant.
> strike ring would keep the arcs from hitting the primary coil, but it
> still attract arcs itself.  I guess there isn't really anything we can do
> about it without winding a taller secondary.
> -- Ryan Ries