RE- Re: Rotary Gap

From: 	Robert Michaels[SMTP:robert.michaels-at-online.sme-dot-org]
Sent: 	Monday, August 04, 1997 5:03 PM
To: 	tesla-at-pupman-dot-com
Subject: 	RE- Re: Rotary Gap

        In my traditionalist approach, I make/make-do with a pine
        board (yellow; or Southern white).  After pre-cutting to an
        exact circle, I place it in a preheated  =electric=  oven
        (kitchen range) set at very low heat and allow it to
        remain for several hours.

        Upon removal from the oven I immediately soak the pine
        board in insulating material (I prefer paraffin dissolved
        in naphtha, but low viscosity epoxy or polyurethane should

        After a good soak, I remove it and let it dry.

        It's cheap and available everywhere.  Works just fine. Is light
        weight. Is easy to fabricate.  Doesn't break.  Won't kill if it
        does. Holds-up under 10-14 Kv with no apparent problems.

                                        If it's good-enough for
                                        Dr. Tesla it's good-enough
                                        for me,

                                        Robert Michaels, in --
                                        Detroit, USA

T>In a message dated 97-08-04 02:32:31 EDT, you write:

T>>    Thanks for keeping me out of harms way! The only place that I have
T>> found that sells G-10 is a plastics company that I buy my poly, and
T>> epoxy from. They only sell the stuff in 24" x 48" sheets, and the price
T>> works out to several hundred dollars! Sooo I'll probably use lexan.
T>> Thanks for your help!

T>>                               Frankensteins Helper
T>>                                       Max
T>  >>


T>I use lexan for my rotors, but as Ed Wingate mentioned, heat can be a
T>problem, since lexan has such a low softening temperature.  My rotor
T>and spinning electrodes run absolutely cold during operation, so I don't
T>really have to worry about heat.  But whenever I try a new TC design, I
T>make a few tests of varying run times to verify that the electrodes are
T>still running cool.

T>By the way, some places sell smaller pieces (1 foot squares) of G10.

T>John Freau