X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: <13brv3@bellsouth.net> Received: from imf23aec.mail.bellsouth.net ([205.152.59.71] verified) by logan.com (CommuniGate Pro SMTP 4.3.2) with ESMTP id 960694 for flyrotary@lancaironline.net; Mon, 23 May 2005 12:56:49 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.71; envelope-from=13brv3@bellsouth.net Received: from ibm66aec.bellsouth.net ([65.6.194.9]) by imf23aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050523165604.MGFE2457.imf23aec.mail.bellsouth.net@ibm66aec.bellsouth.net> for ; Mon, 23 May 2005 12:56:04 -0400 Received: from rd ([65.6.194.9]) by ibm66aec.bellsouth.net (InterMail vG.1.02.00.01 201-2136-104-101-20040929) with ESMTP id <20050523165604.LRRQ9421.ibm66aec.bellsouth.net@rd> for ; Mon, 23 May 2005 12:56:04 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: EC2 problems Date: Mon, 23 May 2005 11:56:32 -0500 Message-ID: <000001c55fb8$5f230940$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C55F8E.764D0140" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C55F8E.764D0140 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable How much of an over-voltage would it take to burn out the input power = filter choke and shut down the EC-2. Could this happen from a failed = alternator voltage-regulator? Is there something other builders could do to = prevent this from happening to them? =20 =20 All good questions Mark. I would also add- Is there only one of these filters in the EC-2? In other words, is it a single component that can = take out both controllers? I have to admit that I've never been comfortable = not having redundant power feeds to the controllers, and I'd be even more uncomfortable to learn there's a single point failure that can (however unlikely) happen.=20 =20 Thanks for being open, as always about all this! =20 Cheers, Rusty (waiting for a better scale to attempt my dynamic prop balancing) = ------=_NextPart_000_0001_01C55F8E.764D0140 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
How much of = an=20 over-voltage would it take to burn out the input power filter choke and = shut=20 down the EC-2.  Could this happen from a failed alternator=20 voltage-regulator?  Is there something other builders could do to = prevent=20 this from happening to them?  
 
All good = questions=20 Mark.  I would also add- Is there only one of these filters = in the=20 EC-2?  In other words, is it a single component that can take = out both=20 controllers?  I have to admit that I've never been comfortable = not=20 having redundant power feeds to the controllers, and I'd be = even more=20 uncomfortable to learn there's a single point failure that can (however=20 unlikely) happen. 
 
Thanks for = being open,=20 as always about all this!
 
Cheers,
Rusty (waiting = for a better=20 scale to attempt my dynamic prop=20 balancing)  
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