[Fot] Judson Electronic Magneto

[Bill Babcock]

Ahh--I get it, it's not a real magneto. It's an electronic ignition  
system that's pretending to be a mag.
Bill Babcock
billb at bnj.com
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On May 24, 2007, at 8:04 AM, Barr, Scott wrote:

>  <<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 at hotmail.com]
> Sent: Thursday, May 24, 2007 9:44 AM
> To: Barr, Scott; fot at 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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