Re: Capacitor Help

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Esondrmn@xxxxxxx 

Malcolm in KC,

I would suggest using plastic for your primary supports.  Wood will 
allow high voltage creeping and eventually shorts.  Unless you dry it 
very well first and coat it with a few coats of varnish, shellac, 
etc.  I have heard of folks cooking (?) wood in a bath of liquid wax 
for a permanent water proofing.  I just use plastic.  Also, I would 
definitely not try to thread the primary tubing through holes drilled 
in the supports.  It is very difficult.  I use notches and have a 
small hole drilled under each notch then use plastic wire ties to 
hold the tubing in place.  I usually use 3/8" spacing between 
adjacent windings.  This is enough space and still allows room for 
the clip on your tap lead.

Ed Sonderman

In a message dated 12/13/2005 8:00:04 PM Pacific Standard Time, 
tesla@xxxxxxxxxx writes:
I have beginner written all over me :)  I guess I didn't realize I could
work out how many primary turns I would need exactly.  After just reading
Terry's post with all the math I see it's very possible.  I thought though
as long as I wind to many I could always tap in lower down and be OK.  It
seems from Terry's math though I've got to little turns.  I will try and add
some more tubing tomorrow.  OR maybe I should remake the purches and wind
the same copper with 1/2" spaces instead of 3/4" spaces and get more turns.
I don't know how much more I'll get though.  If I do end up doing it over
I'm going to use 1 x 2" wood on edge with holes drilled though instead of
the notch method I tried.  It will be much more secure, easier to wind, and
probably look nicer too.