X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ms-smtp-01.southeast.rr.com ([24.25.9.100] verified) by logan.com (CommuniGate Pro SMTP 5.1.10) with ESMTP id 2154193 for flyrotary@lancaironline.net; Mon, 02 Jul 2007 17:55:58 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.100; envelope-from=echristley@nc.rr.com Received: from [192.168.0.75] (cpe-066-057-038-121.nc.res.rr.com [66.57.38.121]) by ms-smtp-01.southeast.rr.com (8.13.6/8.13.6) with ESMTP id l62LtER0012214 for ; Mon, 2 Jul 2007 17:55:18 -0400 (EDT) Message-ID: <4689744B.7090805@nc.rr.com> Date: Mon, 02 Jul 2007 17:55:23 -0400 From: Ernest Christley User-Agent: Thunderbird 1.5.0.10 (X11/20070403) MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Ford EDIS ignition systems References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: Symantec AntiVirus Scan Engine wrjjrs@aol.com wrote: > Ernest, > with C.O.P. why couldn't you fire both plugs at once by paralleling > the two coils? They have a trigger circuit if I recall correctly. The > draw on the trigger shouldn't be much. You could run 2 boxes if you > want, but only 1 would be needed. > Bill Jepson I believe what you're saying is to use the EDIS-4 coil pack. It drives two plugs per side, and I could just fire the leading and trailing at the same time. It's workable...and simple. But I loose the redundancy and the split timing. While the benefits of the latter are questionable, the former is not, especially since I'll be using used components. In the event of a power outage, or computer failure, the sparks will run independantly. I'm going to run an extra, manual-valve controlled, gravity fed fuel line to the intake that will let me "pour' fuel into the intake. That's my backup to the injectors. My previous calculations for endurance bus alternator out event was 20Amps. These modifications will help me push it down closer to the <10 that I want it to be.