[AT] grounded coil

[John Wilkens]

Sorry for the confusion guys!   I was refering to the CASE of a 
points-type coil--which is usually fastened directly to the engine or 
frame--with no insulation.  What I was wondering--MUST the case of 
the coil be mounted on a ground surface.  Seems like it is often 
difficult to get descriptions written clearly!   John W.


At 09:55 AM 08/29/2007, you wrote:
>Larry.. I'm making a big assumption here.. but I'm guessing we are talking
>about an ignition coil for a points style system.
>
>in that case.. the POINTS are the ground for the coil primary circuit!!!!
>When points open, you get spark.. having yuor coil grounded to the chassie
>would mean that you would NEVER have spark.
>
>Not a real good thing on a spark ignition system..... not to mention it
>would make the points useless... etc....
>
>The 'case' 'can' whatever material of the exterior of the coil itself should
>be isolated/insulative.. and not be common to either the coil primary OR the
>secondary...
>
>Soundguy
>
> >From: "Larry D Goss" <rlgoss at evansville.net>
> >Subject: Re: [AT] Grounded coil?
> >Be careful.  It depends on the coil and the design of the ignition system.
> >There are some systems that require the coil to be grounded.  Others don't.
> >To be on the safe side, I always make sure the coil is grounded.  We've
> >heard Farmer's mantra enough to all know it by heart -- Check the grounds,
> >check the grounds, check the grounds.
>
> >Larry
>
>
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