[AT] Grounded coils.. again

[Chris Britton]

Thanks for requoting the original posters message.  Looks like to me.. 
VERBATUM he is asking if the CASE of the coil needs to be bonded to CHASSIE.

What do yuo suppose the case of the coil is made from? leather? bannanna 
tree leaves?  No.. it's made of some kind of plastic.. or of a metal.

That's what my previous comment just stated...

From: "Francis Robinson" <robinson at svs.net>
> I'm pretty sure the original poster was talking about a seperate ground
> terminal on the plastic, or insulated metal case of the coil to chassie
> ground...  At least that's how I and many others have interpreted it any
> way...
>
> Soundguy
>


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    No... He wasn't... Below is the "ENTIRE" original question that John W.
innocently asked. He is now probably hiding in a foxhole peeping over the
edge to see if it is safe to come out...   ;-)

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>>Does the case of a coil have to be grounded to the engine to work
>>right?     John W.


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I didn't mention plastic coils.. i mentioned plastic cases.. as that what 
the case of most coils are...

>    A pretty simple question wasn't it... Absolutely nothing about plastic
>coils... Absolutely nothing about point ignitions... None of the crap that

And to be fair.. that question was so vauge as to be virtually unanswerable 
without something framing it in context.  With no contextual info.. one 
could reasonable think it was a 'topical ' question.. and since this is an 
antique tractor sub.. then.. one might answer it in that context.. IE.. 
points ignition, and external coil.. which is what most here did.

>many here read into it and formed into the image they built in their minds.
>Ron (Walt), popped out an absolute "no" answer and Larry very correctly
>simply indicated that in some setups a ground "could" be required. There 
>was
>nothing in Larry's answer (or the original question) that called for all of

With that vauge of a question.. the 'normally not needed' answer would have 
been equally non-helpfull as an absolute answer.

I agree.. there are examples of the coil being grounded in more modern 
setups. and with setups with pickups and implse ignitions.   As far as 
antique tractors go.. however.. i think it's fair to say that points 
grounded couils are the 'norm'. not the exception.. Wouldn't you say so?

>    BTW, My picture of what John was talking about was him wondering if he
>needed to worry about cleaning the mounting clamp and a band of the coil
>case being sanded clean to assure a good ground to the block... My answer
>would have been "normally not needed"...
>    It all could have been so simple...   :-)

>    Read twice, answer once...   ;-)   ;-)