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Re: sources for large secondary coil forms (fwd)
---------- Forwarded message ----------
Date: Fri, 10 Jul 1998 09:14:27 -0500
From: "Robert W. Stephens" <rwstephens-at-headwaters-dot-com>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: sources for large secondary coil forms (fwd)
Jim Heagy wrote:
> I just found a website with some electrical, etc. specs. for the pipe. It is
> <A HREF="http://www.harvel-dot-com/PVCpipe.html">PVCpipe.html at www.harvel-dot-com
> </A>
> It says gray or white PVC is 1413 volts/cm diel. strength, 3.7 diel. const.
> and volume resistivity of 1.2X10e12
>
> jim heagy
>
>
Jim,
You inadvertently made a mistake in the above data giving cm instead of mils. I
just checked the site you listed and the insulation rating for the Harvel PVC
pipe is 1413 volts per mil. This is a pretty good insulation figure.
With proper pre-sealing, PVC sewer pipe is an excellent choice of
coilform for even quite large Tesla coils.
Regards,
Robert W. Stephens
Director
Lindsay Scientific Co.
RR1 Shelburne, ON Canada L0N-1S5
Tel or AutoFax: 1-519-925-1771
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