When a battery is so low that the solenoid just clicks it can still around
near 12v with just the ignition on, i.e. more than enough to run the engine.
Obviously a battery *can* be so flat that not even the ignition will work,
but there is a large range of partial charge between 'no crank' and 'no
spark'. It is the plug gap that limits the measured HT voltage - there are
potentially (ho!) many more thousands of volts available with a standard
coil, which should jump at least 1/2" without difficulty, even given that it
is harder for a spark to jump a given gap under compression than in free
air.
PaulH.
----- Original Message -----
From: Harlan Jillson <harlanjillson@covad.net>
To: Bob D. <bobmgtd@home.com>; <mgs@autox.team.net>
Sent: Friday, October 05, 2001 12:15 AM
Subject: Re: Report: Ignitor Ignition System
> It has been my experiance with the ignitor that it works fine with a
battery
> so low that the starter just clicks, and that's real low. Still fires off
> the engine and runs fine when push started.
> As for the opening up the plug gap, I went to .035", but that's with a
Lucas
> sport coil with a lot more output that the stock unit.
> Harlan
>
>
> ----- > If the Ignitor won't work below 12 volts, Pertronix better go back
> to the
> > drawing board.
>
> > That was solved with a wait for a new magnetic collar. Then my
alternator
> > > failed while in enroute, and as soon as voltage dipped below 12V you
are
> > > screwed if you use the Pertronix. On the other hand, points will
> continue
> > > to operate into the upper 8V range.
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