X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 09 Dec 2009 19:48:18 -0500 Message-ID: X-Original-Return-Path: Received: from elasmtp-dupuy.atl.sa.earthlink.net ([209.86.89.62] verified) by logan.com (CommuniGate Pro SMTP 5.3c3) with ESMTP id 4012720 for lml@lancaironline.net; Wed, 09 Dec 2009 17:44:20 -0500 Received-SPF: none receiver=logan.com; client-ip=209.86.89.62; envelope-from=colyncase@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=VNaF+O991lMu6czR7ZyV8nuJ1EpvndQ13V6btczS6NbQ9ITbw95O2QA/tqn2xyPW; h=Received:Message-ID:From:To:References:Subject:Date:MIME-Version:Content-Type:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE:X-ELNK-Trace:X-Originating-IP; Received: from [216.57.118.33] (helo=ccaselt3) by elasmtp-dupuy.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1NIVG6-0001Ms-Bk for lml@lancaironline.net; Wed, 09 Dec 2009 17:43:46 -0500 X-Original-Message-ID: From: "Colyn Case at earthlink" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] IV-P alternator woes X-Original-Date: Wed, 9 Dec 2009 17:43:45 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_029E_01CA78F7.27F1BE50" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5843 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 X-ELNK-Trace: 63d5d3452847f8b1d6dd28457998182d7e972de0d01da9400eea90af65e8d4ae119f95309e1c0762350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 216.57.118.33 This is a multi-part message in MIME format. ------=_NextPart_000_029E_01CA78F7.27F1BE50 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Andres, Are you talking about the field CB? Can you say which regulator? If it's the standard b&c I believe it has a crowbar circuit for over = voltage. It intentionally shorts the field supply to ground so that = the field CB pops, thereby averting a major problem. When you say you "checked" the regulator, what do you mean exactly? Did = you check at what voltage turns off the alternator? Based on what you describe it sounds like the regulator is either not = adjusted correctly or defective. Colyn ----- Original Message -----=20 From: Dr Andre Katz=20 To: LML=20 Sent: Sunday, December 06, 2009 12:32 PM Subject: [LML] IV-P alternator woes during an approach to taos in the middle of a snow shower my = alternator switch popped out tried to reset a couple of times but kept turning itself down used the back up alternator but had to keep the radios on during the = instrument approach which had to be terminated since the runway got full = of slush and 4 inches of snow so to santa fe the electricians detected a hot alternator and for 48 hrs tried to = diagnose the problem=20 apparently the alternator is not shutting itself of=20 checked the voltage regulator the switch, the alternator and could not = come up with an answer went back to dallas VFR with all radios off and handheld GPS with the = backup alternator providing enough juice any ideas will be appreciated dont know much about damn electrons.... andres IV-P alternator is almost new 40 hrs since new ------=_NextPart_000_029E_01CA78F7.27F1BE50 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Andres,
 
Are you talking about the field = CB?
Can you say which = regulator?
If it's the standard b&c I believe = it has a=20 crowbar circuit for over voltage.   It intentionally shorts = the field=20 supply to ground so that the field CB pops, thereby averting a major=20 problem.
 
When you say you "checked" the = regulator, what do=20 you mean exactly?  Did you check at what voltage turns off the=20 alternator?
 
Based on what you describe it sounds = like the=20 regulator is either not adjusted correctly or defective.
 
Colyn
 
----- Original Message -----
From:=20 Dr Andre = Katz=20
To: LML
Sent: Sunday, December 06, 2009 = 12:32=20 PM
Subject: [LML] IV-P alternator = woes



during=20 an approach to taos in the middle of a snow shower my alternator = switch popped=20 out
tried=20 to reset a couple of times but kept turning itself down
used=20 the back up alternator but had to keep the radios on during the = instrument=20 approach which had to be terminated since the runway got full of slush = and 4=20 inches of snow so to santa fe
the=20 electricians detected a hot alternator and for 48 hrs tried to = diagnose the=20 problem
apparently=20 the alternator is not shutting itself of
checked the=20 voltage regulator the switch, the alternator and could not come up = with an=20 answer
went=20 back to dallas VFR with all radios off and handheld GPS with the = backup=20 alternator providing enough juice
any=20 ideas will be appreciated
dont=20 know much about damn electrons....
andres=20 IV-P alternator is almost new 40 hrs since=20 new
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