[AT] grounded coil

[Ken Knierim]

Ron/Walt,
     Electricity isn't magic. It requires a current path, thus a
ground of some sort is necessary. The engine is one big block of
metal, forming the ground line between the coil and the spark plug.
      The only kind of electricity that does not need a ground path is
static electricity... better known as lightning. Since you're not
working with that, maybe you should ask those folks that actually have
the education and knowledge of these things.

I push electrons for a living. Transformers (which is what coils are)
require a ground in addition to the high voltage output.

Here's a test for you. Take the cover off your computer and open up
the enclosed box in the corner (the one with the fan on it). Look in
there at the transformers.. they will probably have nice little toroid
coils with magnet wire on them. Cut (use a big wirecutters) the ground
on any of them and put it back together and email me what you find. If
your theory is correct nothing will be adversely affected.

I await your reply.

Ken in AZ



On 8/29/07, RonMyers at wildblue.net <RonMyers at wildblue.net> wrote:
> OH! Brother some people will say anything to be correct. Yes you just
> might be correct if for some reason somewhere sometime someone made a coil
> that has to be grounded but in all the years that I been around I have
> never seen nor heard of one so my statement of NO still stands for me
> anyway.
> Now that doesn't include all of the pre WW-I engines that I'm sure none of
> us own or work on.
>
> Ron
>
>
> > Well, I don't want to get into a rock throwing contest.  Marshall Brain is
> > a
> > nice guy and we're both members of the same club sponsored by NCSU
> > (literally), but everything that appears in his website is not universal.
> > I
> > still stand by my statement that some ignition coils HAVE to be grounded
> > to
> > operate.  Just because you haven't come across any, doesn't mean they
> > don't
> > exist or even that they're rare.
> >
> > Larry
> >
> > ----- Original Message -----
> > From: <RonMyers at wildblue.net>
> > To: "Antique tractor email discussion group"
> > <at at lists.antique-tractor.com>
> > Sent: Wednesday, August 29, 2007 1:13 PM
> > Subject: Re: [AT] grounded coil
> >
> >
> >> Got to this site and you will see that the coil case is not grounded.
> >> this
> >> one has a n electronic model to replace the points other than that its
> >> the
> >> same all of the cars trucks and tractors that use this type of system.
> >>
> >> Ron
> >>
> >> http://auto.howstuffworks.com/ignition-system.htm
> >>
> >>
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> >>
> >
> >
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