Re: [TCML] Burnt Joint (Cap Bank)

[Mike Gray <graymp89@xxxxxxxxx>]

Thanks for all the great info everyone. I'll go for the clear acrylic stuff
I think, it does look very cool. Depending on how easy it is to cut/saw I
may end up making a base framework out of it too.


On 22 May 2013 22:45, Yurtle Turtle <yurtle_t@xxxxxxxxx> wrote:

> The only down side to drainage pipe vs. drinking water pipe is the quality
> control. Pressure pipe used to carry potable water is more highly regulated
> with respect to contaminates. They also make pressure pipe for sewage. This
> is only theoretical, as there have been posts relating experience with
> conductive contaminants, but they never mentioned whether it was for
> potable water use. My 10-1/4" secondary is wound on water pipe, which is
> pretty heavy.
>
>
>
>
> ----- Original Message -----
> From: Jon Danniken <danniken@xxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Cc:
> Sent: Tuesday, May 21, 2013 2:50 PM
> Subject: Re: [TCML] Burnt Joint (Cap Bank)
>
> On 05/21/2013 11:34 AM, Mike Gray wrote:
> > For the same money I can get roughly 250% more PVCu tube from here:
> >
> > http://www.pipestock.com/pvc/pvc-pipe/pvc-pipe-10-bar-metric/
> >
> > So is there any real difference between acrylic and PVCu? What's the
> > electrical property of primary concern here, relative permittivity?
> >
> > I'm still wondering about that volume resistivity figure I was given for
> > the PVCu... anyone able to shed some light on that one?
> >
> > Or am I over-engineering this whole decision...? Is it just a case that
> any
> > old (pure) plastic will do a good job?
>
> From my understanding, it makes little to no difference in the
> functional performance of a tesla coil.  Some have taken steps to ensure
> that their PVC pipe is lower in moisture content, often by hanging a
> lightbulb inside of the tube to help warm it up, and then coating it in
> polyurethane (or other compound) to help seal it up.
>
> Personally, I just keep the pieces I use in the house, and they have
> worked out fine for me.  I do prefer the "drainage" type of PVC pipe
> (ASTM D2729 here in the states), as it has a much thinner wall than PVC
> pipe intended for use for pressurized water.
>
> Jon
>
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