Subject: Crank Trigger Ignition
From: Rotary Engine
Date: 8/3/2007, 8:23 AM
To: AARotary Engine



            I've spent the last hour on the net looking for coils that will
       fire
            two plugs simultaneously.  Maybe I'm phrasing the search
   wrong, but
            so far I have found nothing.  I looked at all the coils on
   the MSD
            site.  There is very little description of the individual
       coils.  Can
            most coils handle rotory rpm?     I would appreciate a
   point in the
            right direction.   Thanks,  Jerry

       Jerry,
       Try motorcycle coils. many are dual lead. Also try using "dual lead
       secondary ignition coils" in your browser. there are plenty of
   them.
       Several of the 4 cylinder Subarus also use dual lead coils.
       Bill Jepson


   I think most of those coils are for "wasted spark" systems.  Maybe look
   for that..


   Regards,

   Matt-

The V6 GM engines use a wasted spark system with 3 dual tower coils.  I
ran my 20B on a test stand using a cobbled up ignition system with three
Buick V-6 coils.  They're pretty cheap (< $10/ea).  I modified the CAS
by adding a third pickup, all equally spaced (120* apart).  Then I used
3 early GM ignition trigger modules.  That along with a Holley 4-barrel
and we had liftoff.  It worked great.  I bought an EC-2 later on, and
that's what I'm using now.

Mark S.


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