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Re: Sonderman's continuing saga





---------- Forwarded message ----------
Date: Wed, 01 Oct 1997 12:07:44 -0700
From: Bert Hickman <bert.hickman-at-aquila-dot-com>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: Sonderman's continuing saga

Tesla List wrote:
> 
> ---------- Forwarded message ----------
> Date: Tue, 30 Sep 1997 20:52:35 -0400 (EDT)
> From: Esondrmn-at-aol-dot-com
> To: tesla-at-pupman-dot-com
> Subject: Sonderman's continuing saga
> 
> I was looking at my coil tonight when I was remounting the secondary and
> spotted something I thought I would ask about.  The bottom of the secondary
> is grounded by the use of a brass bolt.  There is a lug mounted on the lower
> end of the secondary wire and that is connected to this brass bolt that goes
> down through the plastic base on the coil, through the plastic spacer discs
> that adjust the coupling and through the plywood base (top) on the roll
> around cart.  The bottom of that brass bolt is connected to a 4.0" wide piece
> of 12 oz copper that travels under the primary and down the side of the cart
> and connects to the copper ground plane.
> 
> This 4.0" wide copper flashing is maybe only 4" under the primary (which is a
> 30 degree saucer design) and travels from just across center all the way
> under one side.  I don't remember if this construction coincided with the
> onset of these problems.  Is it possible that this is loading the primary
> enough to cause all of my current problems??  I think I should remove this
> and replace it with heavy wire coming up more directly from the bottom.
> 
> Comments??
> 
> Ed Sonderman

Ed,

Eddy currents induced into the flashing will rob you of some energy, but
it's not clear that this is the root cause of the problems you're
seeing. In any event, try either rerouting the strap to give you more
clearance to the primary, or substitute a length of heavy guage wire at
least in the region where it's in close proximity to the primary. It
certainly is a quick/inexpensive change.

-- Bert H --