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Re: primary supports
Purchase a set of 8 delrin (acetyl plastic) blocks measuring 1/2 x 2/3 x 7
inches long. Line them up with an offset of 1/8th of an inch and using a
1/2 inch ball nose cutter in a milling machine, make a straight pass through
the blocks sideways. Move the cutter over and make another pass. Keep
doing this until you have make a series of cuts with a 5/8 inch center to
center spacing.
Be sure to label the blocks numbers 1-8 on the ends so you can keep them in
order.
Now place the blocks around your support plate keeping the measured distance
from the outer edge of the support plate exactly the same. This will give
you a series of blocks with notches than expand 1/8th inch in dia as you go
from block to block and it expands 1 inch per turn on your primary.
After mounting the blocks with some nylon machine screws (2 per block) you
now can carefully lay in some 3/8 inch ID (1/2 inch OD) copper tubing which
serves as your primary coil. Be sure to drill a large hole and bend the
innermost turn down so it goes directly to the spark gap underneath your
upper support plate. In this way you won't loose efficiency by having to
make an extra connection to the innermost primary turn.
Another tip: Use K soft copper tubing and don't unroll the roll. Just lay
it over your primary blocks and slowly form it 1-2 turns ahead of the
notches by hand as you go. This way it won't work harden on you and then it
becomes scrap.
You may be able to see some of these details on our website coils at
www.ResonanceReseach-dot-com
Dr. Resonance
-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Sunday, March 05, 2000 2:29 PM
Subject: Re: primary supports
>Original Poster: Fucian-at-aol-dot-com
>
>ok can some one explain how to build a flat spiral?
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