<<What does the ground polarity of the car's electrical system have to
do with the magneto?>>
You've got me. I just know that this unit is stamped "Positive Ground"
and the instructions say "Do not install a standard negative ground unit
on an engine having a positive ground."
[included a copy of the instruction sheet, which has an electrical
diagram. attachment will be stripped from mail to list]
Scott
-----Original Message-----
From: John Herrera [mailto:jrherrera90@hotmail.com]
Sent: Thursday, May 24, 2007 9:44 AM
To: Barr, Scott; fot@autox.team.net
Subject: RE: [Fot] Judson Electronic Magneto
>Hey all,
>
>In the stash of Spitfire bits that I picked up recently was a Judson
>electronic magneto (for positive ground car). I'm curious about this
>thing, but not so curious as to replace my coil with it - and besides,
>I've got all negative ground cars.
>
>What's the story with these? Has any of you ever used one?
>
>Scott (B.)
What does the ground polarity of the car's electrical system have to do
with the magneto? The mag produces its own power independant of the
car's electrical system. And anyway, the current flow from a mag
reverses as it fires each plug in turn. Unless car mags are way
different from airplane mags!
John
[demime 1.01d removed an attachment of type application/octet-stream which had
a name of Judson Electronic Magneto Instructions.pdf]
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