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Re: PVC Pipe - Plastic Wrap Coating

Original poster: "Paul B. Brodie" <pbbrodie@xxxxxxxxxxxxx>

Thanks for all your input. I can't even remember the last time it was as low as 30% humidity here. {:-) In the summer, when you walk outside from an air conditioned building, it is like walking into a sauna!!!
Paul Brodie

----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Saturday, March 12, 2005 8:31 PM
Subject: Re: PVC Pipe - Plastic Wrap Coating

> Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>
> Hi Paul,
> At 04:21 PM 3/12/2005, you wrote:
>>Hi Terry,
>>What kind of plastic tube is that in your photo?
> It is 1/8 thick 6 inch diameter Lexan from Mcmaster Carr. I had it laying
> around as "extra", so I used it for this coil. I forget how much it cost,
> but I think it was very pricey!!... I looked it up as #8585K23 at
> $28.44/foot!! But "normal" folks should not go paying that much!! Use
> cheap sewer pipe instead...
>>Do you seal the top and bottom of your secondary coils?
> No. I don't use coatings anymore and I drill and pass bolts through the
> secondary tube as many will say not to do.... But I like to think even
> though I do these naughty things I have never had a problem with it and "I"
> sort of "know" how far to push those things ;-))
>> I live in SC and it is extremely humid here in the summer. That is why I
>> am so concerned about sealing the PVC.
> I think it is going to snow here in CO since the humidity is getting
> "really high" like 30%!! I don't worry much about humidity here... Have
> to judge what to do in your local...
>>Also, with the coating from Dolph being rated at 2000 V per mil, I thought
>>the extra insulation over the windings wouldn't hurt.
> It will not hurt anything!! Best to slowly turn the coil from a little
> motor while it dries to get a very nice even coating.
>>Do you run the coil in the pictures with the primary as high up on the
>>secondary as it shows?
> That was a CW coil arc over so the primary was super high compared to most
> coils in that case.
>>What kind of wire are you using for the primary?
> It is just that 50 foot roll 1/4 inch OD copper tubing called
> "refrigeration tubing" from the hardware store. Pretty cheap at about $14
> for 50 feet and it is nicely packed in a coil already.
> http://hot-streamer.com/temp/DRSSTCprimary.JPG
> Note that my primary to secondary spacing is extremely close!! I can
> pretty much ground the inner turn in the DRSSTC case so I can get away with
> that...
> Cheers,
> Terry
>>Paul Brodie
>>----- Original Message -----
>>From: "Tesla list" <tesla@xxxxxxxxxx>
>>To: <tesla@xxxxxxxxxx>
>>Sent: Saturday, March 12, 2005 5:45 PM
>>Subject: Re: PVC Pipe - Plastic Wrap Coating
>> > Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>
>> >
>> > Hi Dave,
>> >
>> > I don't "paint" my coils anymore either ;-) I do wind them "tight" so
>> > minor temp/humidity variations do not cause the windings to go loose and
>> > fall. But for protection, I wrap them good with shipping stretch
>> > wrap. All office supply stores have it. It is like Saran wrap but
>> > heavier. It protect the coil from physical damage very well and if it
>> arcs
>> > up or gets damaged, you can easily pull it off and replace it!! Here
>> is my
>> > new little DRSSTC coil.
>> >
>> > http://hot-streamer.com/temp/PlasticWrap.JPG
>> >
>> > Here is were I blew one a while back...
>> >
>> > http://hot-streamer.com/temp/WrapBurn01.jpg
>> > Looks bad!!
>> > http://hot-streamer.com/temp/WrapBurn02.jpg
>> > The wrap does not "burn bad" so the actual damage was limited...
>> > http://hot-streamer.com/temp/WrapBurn03.jpg
>> > Just coated it with epoxy...
>> > http://hot-streamer.com/temp/WrapBurn04.jpg
>> > Brushed it up before the coating with a toothbrush,magnifier, and
>> > alcohol. Not bad at all!!
>> > http://hot-streamer.com/temp/WrapBurn05.jpg
>> > Here is the wrap from Office Depot...
>> >
>> > Cheers,
>> >
>> > Terry
>> >