The funny thing is, I'm not sure that the quality of an RF ground makes a
significant difference in the spark-performance of a coil. I've heard more
than one anecdotal accounts where the base of the secondary was
inadvertently left disconnected, and the business at the top of the coil
was unimpaired. I think sparking was observed at the bottom end, tipping
off the builder. The consequence of course is that the next-best path to
earth ground - capacitive coupling to the mains - is now the return path (!)
Regards, Gary Lau, MA, USA
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On Fri, Aug 11, 2017 at 9:51 PM, Yurtle Turtle via Tesla <tesla@xxxxxxxxxx>
wrote:
> Ha! LOL.Mine works fine with a 6' copper ground rod that's located on an
> inconspicuous location, with a 1/4 turn brass welding cable quick connect.
> I may try with just aluminum foil, and see if I can tell a difference. 4"
> welded wire mesh can be purchased in flat sheets, which solves the need to
> place bricks to hold down a rolled up mesh, but where to store them.?
>
>
> From: jimlux <jimlux@xxxxxxxxxxxxx>
>
> To: tesla@xxxxxxxxxx
> Sent: Friday, August 11, 2017 9:12 PM
> Subject: Re: [TCML] First coil
>
> On 8/11/17 5:16 PM, Yurtle Turtle via Tesla wrote:
> > I was merely suggesting a way of having a permanent installation, rather
> than having to unroll multiple rolls of hardware cloth or chicken wire,
> that will not want to stay flat. I don't live 100 meters from a salt marsh.
> >
>
> You don't live in a Salt Marsh? Or created one artificially,
> specifically for running your tesla coil. Seems kind of like slacking
> off<grin>
>
> Yeah, I think for a permanent installation (e.g. roll it out on your
> driveway), some sort of ground rod + radials might be a good and
> relatively inconspicuous solution.
>
> That's unless you're going to put wire mesh on your driveway, and lay
> some top coat over the top so you can still drive on it. Of course a
> "true coiler" would just dedicate the driveway to coiling and cover it
> with a layer of aluminum - and then build a coil that can live outside.
>
>
>
>
>
>
> > From: jimlux <jimlux@xxxxxxxxxxxxx>
> > To: tesla@xxxxxxxxxx
> > Sent: Friday, August 11, 2017 5:40 PM
> > Subject: Re: [TCML] First coil
> >
> > On 8/11/17 7:54 AM, Yurtle Turtle via Tesla wrote:
> >> Does a counterpoise work best directly under the coil, or could it be
> buried 10' feet away, but a HUGE welding cable to connect it?
> > Best under the coil - you're looking for "E-field management" more than
> > "return to earth". In fact, if you operated your coil inside a big
> > cage, that would be best.
> >
> >
> > The "soil" isn't really supposed to be part of the circuit, so burying a
> > ground rod 100 meters away in a salt marsh and then running a wire to
> > your coil is sort of counter productive.
> >
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