X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 10 Dec 2009 07:40:25 -0500 Message-ID: X-Original-Return-Path: Received: from betsy.gendns5.com ([65.254.38.234] verified) by logan.com (CommuniGate Pro SMTP 5.3c3) with ESMTPS id 4012836 for lml@lancaironline.net; Wed, 09 Dec 2009 20:01:48 -0500 Received-SPF: none receiver=logan.com; client-ip=65.254.38.234; envelope-from=paul@tbm700.com Received: from 6.21.204.68.cfl.res.rr.com ([68.204.21.6]:57832 helo=[192.168.1.107]) by betsy.gendns5.com with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.69) (envelope-from ) id 1NIXP5-0006YO-JZ for lml@lancaironline.net; Wed, 09 Dec 2009 20:01:11 -0500 From: paul miller Mime-Version: 1.0 (Apple Message framework v1077) Content-Type: multipart/alternative; boundary=Apple-Mail-64-779312710 Subject: Re: [LML] Re: IV-P alternator woes X-Original-Date: Wed, 9 Dec 2009 20:01:10 -0500 In-Reply-To: X-Original-To: "Lancair Mailing List" References: X-Original-Message-Id: <2AFAB1CA-4D7F-4011-B36E-0503199F9B18@tbm700.com> X-Mailer: Apple Mail (2.1077) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - betsy.gendns5.com X-AntiAbuse: Original Domain - lancaironline.net X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - tbm700.com --Apple-Mail-64-779312710 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii And, to add to Colyn's note, I chased similar symptoms and the batteries = needed replacement. Make sure they can hold voltage under full load = before you start taking things apart. My symptoms were voltage spikes, = CBs popping, gear not coming up and other side effects. It was old = batteries. Paul Legacy N357V On 2009-12-09, at 7:48 PM, Colyn Case at earthlink wrote: > Andres, > =20 > 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. > =20 > When you say you "checked" the regulator, what do you mean exactly? = Did you check at what voltage turns off the alternator? > =20 > Based on what you describe it sounds like the regulator is either not = adjusted correctly or defective. > =20 > Colyn > =20 > ----- Original Message ----- > From: Dr Andre Katz > To: LML > Sent: Sunday, December 06, 2009 12:32 PM > Subject: [LML] IV-P alternator woes >=20 >=20 >=20 > 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 > apparently the alternator is not shutting itself of > 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 --Apple-Mail-64-779312710 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii And, = to add to Colyn's note, I chased similar symptoms and the batteries = needed replacement. Make sure they can hold voltage under full load = before you start taking things apart.  My symptoms were voltage = spikes, CBs popping, gear not coming up and other side effects.  It = was old batteries.

Paul
Legacy = N357V


On 2009-12-09, at 7:48 PM, = Colyn Case at earthlink wrote:

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 -----
To: LML
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
apparently the alternator is not shutting itself = of
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

= --Apple-Mail-64-779312710--