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Re: PVC Pipe - Plastic Wrap Coating

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

Hi Terry,
What kind of plastic tube is that in your photo? Do you seal the top and bottom of your secondary coils? I live in SC and it is extremely humid here in the summer. That is why I am so concerned about sealing the PVC. Also, with the coating from Dolph being rated at 2000 V per mil, I thought the extra insulation over the windings wouldn't hurt.

Do you run the coil in the pictures with the primary as high up on the secondary as it shows? What kind of wire are you using for the primary? Thanks
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
> At 02:52 PM 3/12/2005, you wrote:
>>...yes, my last two coils I've sprayed the PVC with Dolphs Lamination
>>coating,..spray can. I dont bother coating the windings anymore. When the
>>winding is done, I put a small amount of epoxy around the last few turns
>>on each end, just to keep it from unwinding..........No racing spark
>>problems, but, the aspect ratio has been a little higher with my last two
>>coils,..4" by 23.5". I would think if your coil is that far off, its gonna
>>arc through what ever coating you put on it, and, if you have a very
>>heavey coat, it will make it that much harder for a possible repair,...but
>>heck, I DONT KNOW !!!!