Hello Jeremiah,
The 10" rotor of my RSG, which turns 3600 RPM, is made of 0.5" G10 (FR4). After many hours of operation at 4.8 KVA, I have seen no noticeable change in its appearance or properties. I think this is the ultimate material for RSG rotors. It is a little difficult to work with and you have to take precautions (breathing mask while cutting) because of the glass fibers but it is incredibly strong and has excellent insulation properties. GP03 is also a good material. I use GP03 for some non-rotor applications although it may also be good rotor material. It is cheaper and easier to work than G10. Both G10 and GP03 are thermosetting so no worry about softening.
Steve White
Cedar Rapids, Iowa
----- Original Message -----
From: "Jeremiah Schmidt" <jeremiahschmidt1018@xxxxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Sunday, February 10, 2019 9:37:29 PM
Subject: Re: [TCML] Aesthetics vs. Performance
On the discoloration of the spark gap, what would I be looking at in the
specs of plastics to help combat that? I want to make everything pretty
much transparent and discoloration is no bueno. I didn't even consider that.
Alchemy(n): When scientific methods become more art than science.
On Sun, Feb 10, 2019, 9:33 PM Jeremiah Schmidt <
jeremiahschmidt1018@xxxxxxxxx wrote:
> Thanks you guys! See it was just my lack of understanding. I was thinking
> that it dampened the transferable power in the magnetic field. Most
> excellent! The secondary was my concern cause of my smaller power supply.
> And yes, I already mess around with JavaTC alot. Definitely owe alot of
> saved time to it.
>
> Alchemy(n): When scientific methods become more art than science.
>
> On Sun, Feb 10, 2019, 6:46 PM 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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