X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from willowsprings.uwyo.edu ([129.72.10.31] verified) by logan.com (CommuniGate Pro SMTP 5.3c2) with ESMTPS id 3970990 for flyrotary@lancaironline.net; Tue, 10 Nov 2009 13:18:23 -0500 Received-SPF: none receiver=logan.com; client-ip=129.72.10.31; envelope-from=SBoese@uwyo.edu Received: from ponyexpress-ht1.uwyo.edu (ponyexpress-ht1.uwyo.edu [10.84.60.208]) by willowsprings.uwyo.edu (8.14.2/8.14.2) with ESMTP id nAAIHlb9011516 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO) for ; Tue, 10 Nov 2009 11:17:49 -0700 (MST) (envelope-from SBoese@uwyo.edu) Received: from Boesexps (172.26.4.5) by uwmail.uwyo.edu (10.84.60.198) with Microsoft SMTP Server id 8.1.393.1; Tue, 10 Nov 2009 11:17:48 -0700 From: sboese To: "'Rotary motors in aircraft'" Subject: Re: No start after Date: Tue, 10 Nov 2009 11:18:02 -0700 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001A_01CA61F7.776E1580" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6856 Thread-Index: AcpiMiO3l7CV1HwJS2O6ckWQimyo1w== Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 ------=_NextPart_000_001A_01CA61F7.776E1580 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Steve, Last night I tried to determine the effects of miswiring a properly functioning CAS to one of my EC2's Reversing the two CAS signals resulted in no sparks (no coil control signal pulses generated and not one spark seen at any RPM). Disconnecting either or both of the CAS signals resulted in no sparks. Reversing the polarity of either one of the CAS sensors also resulted in no sparks. Reversing the polarity of both CAS sensors resulted in sparks that appeared normal in intensity and timing. This last condition may be a non-issue or possibly an insidious problem. Probably only Tracy would know which would be the case. The sensible thing would be to wire things according to his recommendations, of course. In any case, I could not produce the symptoms you are seeing by miswiring known good components as described. Again, for what it is worth. Steve Boese ------=_NextPart_000_001A_01CA61F7.776E1580 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Steve,

 

Last night I tried to determine the effects of = miswiring a properly functioning CAS to one of my EC2’s

 

Reversing the two CAS signals resulted in no sparks = (no coil control signal pulses generated and not one spark seen at any = RPM).

 

Disconnecting either or both of the CAS signals = resulted in no sparks.

 

Reversing the polarity of either one of the CAS = sensors also resulted in no sparks.

 

Reversing the polarity of both CAS sensors resulted = in sparks that appeared normal in intensity and timing.  This last condition = may be a non-issue or possibly an insidious problem.  Probably only Tracy = would know which would be the case.  The sensible thing would be to wire = things according to his recommendations, of course.

 

In any case, I could not produce the symptoms you are = seeing by miswiring known good components as described.

 

Again, for what it is worth…

 

Steve Boese

 

 

  

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