Hey fellow coilbuilders white PVC pipe. Seems to work fine for me. I did not know about the UVnon resistance but it makes sense most white PVC is buried for sprinklers here.I coat mine & almost everything else the secondary coil with a few coats &the primary with a red insulating varnish EL 601 from Grainger it is forcoating coils which may be why. Not sure what the UV resistance is but at up to2600 volts per mil it gets my vote. It also has had good results foe me as acoating but it is not clear.
On Monday, February 11, 2019, 02:14:59 PM PST, Douglas Johnson <doug379306@xxxxxxxxx> wrote:
I use furniture grade PVC, It has UV protection!
Doug
On Mon, Feb 11, 2019 at 3:09 PM Yurtle Turtle via Tesla <tesla@xxxxxxxxxx>
wrote:
> I've seen first hand the effects of sunlight on PVC pipe. It becomes
> incredibly brittle. I've experienced spark-gap yellowing, though not to the
> extent of it becoming brittle, but I have no doubt it happens.
>
> On Sunday, February 10, 2019, 7:46:59 PM EST, David Rieben <
> drieben@xxxxxxx> wrote:
>
> Hi Gary,
>
> I concur with your statement that the UV from the spark gap will cause
> notable deterioration and discoloring of the surface of any PVC material.
> However, I have also found that if this yellowish-brown discoloring goes
> unchecked for long enough, it will eventually lose its mechanical as well
> as its dielectric integrity. I ended up wrapping aluminum duct tape around
> the 2 1/2” PVC pipe pieces that I use as structural pillars to support the
> primary/secondary coil base above the bottom platform base that houses the
> capacitors and RSG assembly due to the UV from the RSG causing the
> aforementioned deterioration of the surface of the PVC pillars.
>
> David Rieben
>
> Sent from my iPhone
>
> > On Feb 10, 2019, at 3:36 PM, Gary Lau <glau1024@xxxxxxxxx> wrote:
> >
> > Hi Jeremiah,
> >
> > “PVC is an attractive, plentiful, and easy material to use. But know
> that
> > in and around spark gaps, in addition to not tolerating heat well, the
> > exposure to UV radiation will quickly turn the clean white to
> > brownish-orange. If you don't care too much about the color, then PVC is
> > fine as long as it's not structural in an RSG.”
> >
> >
> >
> > Regards, Gary Lau
> > MA, USA
> >>
> >>
> >>
> >>
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