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Re: Why pos earth?

To: mgbob@juno.com (ROBERT G. HOWARD), mgs@Autox.Team.Net
Subject: Re: Why pos earth?
From: "Editors, Molecular Vision" <jboatri@emory.edu>
Date: Tue, 8 Jul 1997 07:45:26 -0400
Bob,

Thanks for the reply. I eventualy plan to install a Pertronix ignition
module, an alternator, a larger coil, and a center brake light. Driving in
Atlanta, for me, seems safer with the lights running all the time. The
lights are awfully dim with the generator. The additional center brake
light is one of the few safety features developed in recent years that I
think works. The rest of the stuff is for lower maintenence and maybe a
little better performance. Reversing polarity may be required for the
Pertronix and the big coil. A radio is ok, but I'd be just as happy (for
now) to have a pos. earth radio.

Jeff

>Hi Jeff,
>  At the GOF in Newton, Hal Kramer, who is an electrical engineer,
>touched on this question briefly.  He said that there is a small benefit
>to Negative Earth, in that the spark jumps across the plugs more easily.
>I vaguely recall some long-lost tuning book in which there was an
>illustration of a fellow holding a spark plug and using a pencil to test
>the direction of the spark--from tip to base or base to tip.  I always
>wondered how he could maintain his stability to view the spark, as there
>was probably another one passing simultaneously through the soles of his
>shoes.  Nevertheless, it was considered significant at that time.
>  Why do you want to convert to Negative anyway, unless it is to allow
>easy fitment of radio/stereo equipment?
>Bob
>On Mon, 7 Jul 1997 16:29:48 -0400 "Editors, Molecular Vision"
><jboatri@emory.edu> writes:
>>Hello list!
>>
>>I am sure that this has been discussed before, but here goes:
>>
>>I have a '65 Sprite that is positive ground. I've seen several
>>articles
>>about converting to negative ground. I am planning to do this. First,
>>though, are there ANY positives to leaving it positive? Second, am I
>>assured of losing coil efficiency, or is there a way around this?
>>
>>TIA,
>>
>>Jeff
>>
>>____________________________________________________________
>>Jeff Boatright                '65 Sprite Mk III (funfunfun)
>>Editor-in-Chief, Mol. Vis.    '47 Cessna 140 (in pieces)
>>http://www.emory.edu/molvis   '87 Horizon (full cab pick-up)
>>http://userwww.service.emory.edu/~jboatri/sprite/sprite.html
>>
>>
>>



_____________________________________________________MV

Jeffrey H. Boatright, PhD
Senior Editor, Molecular Vision
http://www.emory.edu/molvis




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