X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [64.4.51.94] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.3.6) with ESMTP id 610332 for flyrotary@lancaironline.net; Thu, 21 Jul 2005 11:16:08 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.4.51.94; envelope-from=lors01@msn.com Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Thu, 21 Jul 2005 08:15:23 -0700 Message-ID: Received: from 64.4.51.220 by BAY107-DAV22.phx.gbl with DAV; Thu, 21 Jul 2005 15:15:23 +0000 X-Originating-IP: [64.4.51.220] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re:Daves EC2 problem Date: Thu, 21 Jul 2005 11:15:19 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00FB_01C58DE5.7AE48130" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MIMEOLE: Produced By MSN MimeOLE V9.10.0011.1703 Seal-Send-Time: Thu, 21 Jul 2005 11:15:19 -0400 X-OriginalArrivalTime: 21 Jul 2005 15:15:23.0995 (UTC) FILETIME=[046ACAB0:01C58E07] This is a multi-part message in MIME format. ------=_NextPart_000_00FB_01C58DE5.7AE48130 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Forgot to comment on the EC2 problem. =20 Since the B problem was intermittent, there is a 99.99% probability that = the flaw is in the relay that switches the injectors between A & B = controller injector driver transistors. This is one of those cases = where the complexity of redundancy causes rather than cures a problem. = (See current stories about the space shuttle now on the launch pad.) = This is the reason why I decided not to add the complexity of = auto-switching of controllers in the event of a failure. I get asked = about that a lot. Tracy (Wondering how many times I have cited the example of shuttle = launch scrubs due to faulty sensors in the backup systems) Tomorrow I plan to send off my EC2 and this sun gear, but not the rest = of the redrive as all seems in order there. Please keep im mind that the Computer B started working normally again = before I removed it so this is one of those intermittant problems. = However, there problem was sustained and reproducable over several = engine starts and at least 10 switches between computers A and B. = Computer A always worked just fine.=20 --=20 Dave Leonard Turbo Rotary RV-6 N4VY http://members.aol.com/_ht_a/rotaryroster/index.html = = http://members.aol.com/vp4skydoc/index.html ------=_NextPart_000_00FB_01C58DE5.7AE48130 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Forgot to comment on the EC2 problem.

Since the B problem was intermittent, there is a 99.99% probability = that=20 the flaw is in the relay that switches the injectors between A = & B=20 controller injector driver transistors. This is one of those=20 cases where the complexity of redundancy causes rather than = cures a=20 problem. (See current stories about the space shuttle now on the = launch=20 pad.) This is the reason why I decided not to add the = complexity of=20 auto-switching of controllers in the event of a failure. I get = asked about=20 that a lot.

Tracy (Wondering how many times I have cited = the=20 example of shuttle launch scrubs due to faulty sensors in the = backup=20 systems)

Tomorrow I plan to send off my EC2 and this sun gear, but not the = rest of=20 the redrive as all seems in order there.

Please keep im mind that the Computer B started working normally = again=20 before I removed it so this is one of those intermittant = problems. =20 However, there problem was sustained and reproducable = over several=20 engine starts and at least 10 switches between computers A and = B. =20 Computer A always worked just fine.

--
Dave=20 Leonard
Turbo Rotary RV-6 N4VY
http://memb= ers.aol.com/_ht_a/rotaryroster/index.html=20
http://members.aol.c= om/vp4skydoc/index.html=20

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