Re: drying coil forms

• To: tesla-at-pupman-dot-com
• Subject: Re: drying coil forms
• From: "Malcolm Watts" <malcolm.watts-at-wnp.ac.nz> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Sun, 05 Dec 1999 18:18:34 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Hi Jim,

> Original Poster: Jim DeLillo <jimdel-at-bellatlantic-dot-net> 
> 
> Why does PVC have to be dried at all.  Is it not plastic? Is it not
> impervious to moisture?  What am I missing here?

It isn't impervious to moisture but I wouldn't lose any sleep over 
drying it out and sealing it unless you are going for max spark length 
from a short coil. I used a piece of unsealed thickwall drainpipe for 
a 10" spacewound coil and found that its Q dropped from 320 to 
about 300 in damp weather.  I have never pushed that coil anywhere 
near its voltage limit. It might be a bad experience to try.

Just a personal experience.
Malcolm

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