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Re: Sonotube HV properties (fwd)
---------- Forwarded message ----------
Date: Fri, 28 Feb 1997 08:56:14 -0600
From: huffman <huffman-at-FNAL.GOV>
To: Tesla List <mod1-at-pupman-dot-com>
Subject: Re: Sonotube HV properties (fwd)
Hi Fr. Tom McGahee and All,
I do know that several years ago, when my kids were small, I would receive
a pretty good jolt of static charge off my daughter at the bottom of one of
these plastic slides when I caught her at the bottom. This would definitely
be a great coil form in my opinion but I'll bet it cost $100s.
BTW I can see that bigger is better since as my secondaries grew the sparks
also grew to a point maybe some day we will have enough data to see were
the curve bends over and be able to pick the secondary size that fits the
input power.
Dave
----------
> From: Tesla List <mod1-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Re: Sonotube HV properties (fwd)
> Date: Thursday, February 27, 1997 10:12 PM
>
>
>
> ---------- Forwarded message ----------
> Date: Thu, 27 Feb 1997 07:57:24 -0500
> From: Thomas McGahee <tom_mcgahee-at-sigmais-dot-com>
> To: Tesla List <mod1-at-pupman-dot-com>
> Subject: Re: Sonotube HV properties (fwd)
>
>
>
> ----------
> > From: Tesla List <mod1-at-pupman-dot-com>
> > To: tesla-at-pupman-dot-com
> > Subject: Re: Sonotube HV properties (fwd)
> > Date: Wednesday, February 26, 1997 11:32 PM
> >
> >
> >
> > ---------- Forwarded message ----------
> > Date: Wed, 26 Feb 1997 16:05:07 -0500
> > From: "Edward J. Wingate" <ewing7-at-frontiernet-dot-net>
> > To: Tesla List <mod1-at-poodle.pupman-dot-com>
> > Subject: Re: Sonotube HV properties (fwd)
> >
> > Tesla List wrote:
> > >
> > > ---------- Forwarded message ----------
> > > Date: Wed, 19 Feb 1997 22:18:38 -0700
> > > From: Tesla List <tesla-at-pupman-dot-com>
> > > To: testla-at-pupman-dot-com
> > > Subject: Sonotube HV properties
> > >
> > > Subscriber: lod-at-pacbell-dot-net Wed Feb 19 22:05:48 1997
> > > Date: Tue, 18 Feb 1997 22:22:28 -0800
> > > From: lod-at-pacbell-dot-net
> > > To: tesla-at-pupman-dot-com
> > > Subject: Sonotube HV properties
> > >
> > > Ed Wingate wrote:
> > >
> > > > Bert,
> > > >
> > > > Although I agree with Richard that cardboard is definitely not the
> ideal
> > > > material to seek for secondary forms, I used 20" Sonotubes for the
> > > > secondary forms on my half wave twin coil and have not had any
> voltage
> > > > breakdowns in over three years of operation. The only coating used
on
> > > > the windings is two or three light coats of shellac to hold the
wire
> in
> > > > place, not for insulating purposes.
> > >
> > > Hi Ed,
> > >
> > > A lot of people have told me that Sonotubes are patently unsuitable
for
> HV work,
> > > that they absorb moisture, the ink conducts, etc.
> > >
> > > But your half-wave coil success clearly shows that these tubes can be
> used for
> > > high-performance TC applications. Could you tell us the brand of
paper
> tube
> > > that you used to make your coils?
> > >
> > > -GL
> >
> > Greg,
> >
> > The sonotube I used for my twin was obtained from Keystone Builders
> > Supply in Rochester, N.Y. and is made by Sonoco Products in Canadaigua,
> > N. Y. I believe Sonoco Products has other plants around the country.
> > Keystone has other outlets around New York state, but I don't know if
> > they have other places around the country. Most large commercial
> > builders' supply companies should have similar products. Just be
certain
> > that the tubes are stored indoors in dry conditions and have not been
> > exposed to rain or snow. As I said before, these aren't the ideal
> > coilforms, but when you get up into the 18" to 36" diameter coils, more
> > ideal materials aren't as easy to find to find or as reasonably priced.
> >
> > Ed
> >
>
> Ed, Greg, and all,
> I have noticed that a lot of little park playgrounds have these slides
that
> are made from plastic tubing that is large enough for the children to
slide
> inside of them. The middle section is a straight section that is bolted
to
> the curved sections. This straight section would make an ideal coil form,
> wouldn't it? I wonder who actually manufactures the plastic sections, and
> what they would charge for one? Anyone out there with a tape measure who
> can tell us what the dimensions (length, diameter) on the straight tube
> are? I know they are made of plastic with a high insulation value. I
would
> guess that they are fairly expensive, but it looks like they would be
> excellent coil forms. Has anyone out there used any of these?
>
> Fr. Tom McGahee
>