X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imr-ma04.mx.aol.com ([64.12.206.42] verified) by logan.com (CommuniGate Pro SMTP 5.4c3j) with ESMTP id 4962727 for flyrotary@lancaironline.net; Sat, 30 Apr 2011 11:50:03 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.206.42; envelope-from=Lehanover@aol.com Received: from imo-da03.mx.aol.com (imo-da03.mx.aol.com [205.188.169.201]) by imr-ma04.mx.aol.com (8.14.1/8.14.1) with ESMTP id p3UFnKf1012274 for ; Sat, 30 Apr 2011 11:49:20 -0400 Received: from Lehanover@aol.com by imo-da03.mx.aol.com (mail_out_v42.9.) id q.eaa.10c1bcfd (55734) for ; Sat, 30 Apr 2011 11:49:16 -0400 (EDT) Received: from magic-d25.mail.aol.com (magic-d25.mail.aol.com [172.19.146.159]) by cia-md04.mx.aol.com (v129.10) with ESMTP id MAILCIAMD041-d9b64dbc2f7b8c; Sat, 30 Apr 2011 11:49:15 -0400 From: Lehanover@aol.com Message-ID: <37c8.68959ebe.3aed897b@aol.com> Date: Sat, 30 Apr 2011 11:49:15 EDT Subject: Re: [FlyRotary] Re: Timing Question for Tracy To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_37c8.68959ebe.3aed897b_boundary" X-Mailer: AOL 9.6 sub 130 X-AOL-IP: 173.88.24.45 X-Spam-Flag:NO X-AOL-SENDER: Lehanover@aol.com --part1_37c8.68959ebe.3aed897b_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 4/30/2011 10:59:19 A.M. Paraguay Standard Time, echristley@att.net writes: I had to do something in order to add a second VR and second ignition controller. You're telling the computer where the crank is and it decides when to send a spark. It doesn't know where that spark is going, it just sends it when it thinks it is time. So my goal was to have backup ignition. The problem is that you can't have two VR sensors in the same place, and going to one and some sort of splitter circuitry introduces a single point of failure. My solution was to place the backup VR sensor 185* on the other side of the trigger wheel. Since the 2nd rotor fires 180 degrees off from the first, all I have to do is switch the plug wires between the rotors, and I have ignition events from independent sources that are placed 5 degrees apart. The first is controlled by the ECU to modify the advance. The second runs off a separate power source. So the object of the second pickup is to troubleshoot the primary pickup? You can mount a pickup and reluctor system on any piece that rotates at crank speed, and have two independent systems you could switch between under power. Or, you could have each pickup (two pickups 180 apart and one reluctor), drive its own system and run the front housing from one, and the rear housing from the other. And if you want a CD system on each of those, you could drive one coil for each plug, or, one double ended coil for each housing. If you go CD or MSD be sure the coils are compatible. Lynn E. Hanover --part1_37c8.68959ebe.3aed897b_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

In a message dated 4/30/2011 10:59:19 A.M. Paraguay Standard Time,=20 echristley@att.net writes:

I had to=20 do something in order to add a second VR and second ignition controller.= =20 You're telling the computer where the
crank is and it decides when= to send=20 a spark. It doesn't know where that spark is going, it just sends= it=20 when it
thinks it is time.

So my goal was to have backup=20 ignition. The problem is that you can't have two VR sensors in the= same=20 place, and going
to one and some sort of splitter circuitry introduc= es a=20 single point of failure.

My solution was to place the backup VR= sensor=20 185* on the other side of the trigger wheel. Since the 2nd rotor= fires=20
180 degrees off from the first, all I have to do is switch the plug= wires=20 between the rotors, and I have ignition events
from independent sour= ces=20 that are placed 5 degrees apart. The first is controlled by the EC= U to=20 modify the advance.
The second runs off a separate power=20 source.

So the object of the second pickup is to troubleshoot the primary=20 pickup?

You can mount a pickup and reluctor system on any piece that rotates= at=20 crank speed, and have two independent systems you could switch between und= er=20 power.

Or, you could have each pickup (two pickups 180 apart and one relucto= r),=20 drive its own system and run the front housing from one, and the rear hous= ing=20 from the other. And if you want a CD system on each of those, you could dr= ive=20 one coil for each plug,

or, one double ended coil for each housing. If you go CD or MSD be su= re the=20 coils are compatible.

Lynn E. Hanover

= --part1_37c8.68959ebe.3aed897b_boundary--