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Re: insulating secondary coils
Original poster: "Harold Weiss by way of Terry Fritz <teslalist-at-qwest-dot-net>" <hweiss-at-new.rr-dot-com>
> YES! Corona dope is still around. It is made by GC Electronics. It ran
> about $4 a 2oz bottle, last time I bought it. I just saw a bottle 2 days
> ago at the electronics store. I have never coated a coil with it, so I
> can't say if it will work. I used it once over a polyurathane coated
coil
> to try to stop top turn corona with no success. It tended to melt/wrinkle
> the polyurathane on the first coat. Subsequent coats smoothed out. The
coil
> still blew thru it after 30 coats. Now I only use it for splices on coils
> before I varnish them. So far no splice has ever broken down. I will be
> posting a picture of the above coil in response to another post. It's of
a
> beautiful corona "ring around the top".
>
> David E Weiss
>
Hi All,
Here's the picture.
http://hot-streamer-dot-com/temp/topcor.jpg
This is going thru 30 coats of dope. Coil is a 4" with a 6" steel sphere
for topload and an 1 1/2" aviation feedthru insulator for stand off. At the
top is a screw producing 18" streamers.
David E Weiss