[Spridgets] Negative ground coil

[Michael Rowe]

I did not know that pencil test, which is really cool.  We forget all the 
methods people used before fancy (and expensive) equipment superseded them.



----- Original Message ----- 
From: "Billy Zoom" <billyzoom at billyzoom.com>
To: <peter at nosimport.com>; "Michael Rowe" <mdrowe at optonline.net>
Cc: "Gerard via Spridgets" <spridgets at autox.team.net>
Sent: Saturday, April 18, 2015 6:27 PM
Subject: Re: [Spridgets] Negative ground coil


> Pencil test:
> https://books.google.com/books?id=ho9kKynnWHkC&pg=PA185&lpg=PA185&dq=%22Igni
> tion+coil%22+%22pencil+test%22&source=bl&ots=yIH0XXaAjG&sig=bY1Ew4oHXr8bQSRJ
> BpDSs-ohsbg&hl=en&sa=X&ei=5dkyVYTGEoLSsAXi1YHwCg&ved=0CBkQ6AEwAQ#v=onepage&q
> =%22Ignition%20coil%22%20%22pencil%20test%22&f=false
>
>
>