Mailing List flyrotary@lancaironline.net Message #34608
From: Bobby J. Hughes <bhughes@qnsi.net>
Subject: MSD coils - Plug Fouling... again.
Date: Thu, 30 Nov 2006 09:44:36 -0600
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
From Lynn's post.
 
We need not do that anymore because we have the Mallory Hifire or MSD ignition systems where we can insert over one amp of electrical energy into the plugs per thousand RPM. The rise times are so short and voltages are so high, that even a carbon fouled plug fires

We use the NGK R6725-115 plugs, gapped at .010". They have a retracted gap and fine wire electrodes. The heat range is ice cold. I have never fouled one. We use a MSD for leading and trailing. Even driving slowly to the false grid on a cold morning, no problems.
 
 
Lynn,
 
These LS1 replacement coils have 3 times the energy of the stock coils and fire in a shorter time.  Could these be worth testing if Tracy's controller is compatible?
 
Bobby
 
 
 
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