X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 05 Jan 2010 11:51:28 -0500 Message-ID: X-Original-Return-Path: Received: from smtp-auth-02.mx.pitdc1.expedient.net ([206.210.66.135] verified) by logan.com (CommuniGate Pro SMTP 5.3.0) with ESMTPS id 4064925 for lml@lancaironline.net; Tue, 05 Jan 2010 08:35:26 -0500 Received-SPF: none receiver=logan.com; client-ip=206.210.66.135; envelope-from=rpastusek@htii.com Received: from HTBOB001 (static-72-66-86-7.washdc.fios.verizon.net [72.66.86.7]) by smtp-auth-02.mx.pitdc1.expedient.net (Postfix) with ESMTPA id 701FC86C70 for ; Tue, 5 Jan 2010 08:34:45 -0500 (EST) From: "Robert Pastusek" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] Charging System Problem X-Original-Date: Tue, 5 Jan 2010 08:34:45 -0500 X-Original-Message-ID: <020a01ca8e0b$d81a30e0$884e92a0$@com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_020B_01CA8DE1.EF4428E0" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AcqNu32nThN8L84TSaKy5nOFPHREGAATcVdg Content-Language: en-us This is a multi-part message in MIME format. ------=_NextPart_000_020B_01CA8DE1.EF4428E0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Craig, As a first start, check your ground wires.all of them, and especially the grounds to the B&C regulator and the regulator case. These regulators have an overvoltage protection circuit that works by tripping the field breaker. This circuit is easily triggered by spurious noise in the electrical system caused by bad grounds. Loose primary wiring will also cause this, but not as easily. Don't be tempted to just install a larger breaker as one Lancair owner did! I have the same setup you do, and have had no problems at 450 flight hours to date. If I can help you troubleshoot, contact me off-line. Bob 757-286-4802 cell Craig Berland wrote: My IV-P has a charging problem. The alternator 5 amp field circuit breaker pops. It seems to take longer to pop when there is a higher electrical load. For example when the air conditioner is running. I have a 24v system, 100 amp alternator, B&C voltage regulator and two 12 v gel cell batteries in series. Any thoughts as to where I should look? ------=_NextPart_000_020B_01CA8DE1.EF4428E0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Craig,
As a first start, check your ground wires…all of them, and = especially the grounds to the B&C regulator and the regulator case. These = regulators have an overvoltage protection circuit that works by tripping the field = breaker. This circuit is easily triggered by spurious noise in the electrical system = caused by bad grounds. Loose primary wiring will also cause this, but not as = easily. Don’t be tempted to just install a larger breaker as one Lancair owner = did!

I have the same setup = you do, and have had no problems at 450 flight hours to date. If I can help you troubleshoot, contact me off-line.

Bob

757-286-4802 = cell

Craig Berland wrote:

My IV-P has a charging problem. The = alternator 5 amp field circuit breaker pops. It seems to take longer to pop when = there is a higher electrical load. For example when the air conditioner is running. I have a 24v system, 100 amp alternator, B&C voltage regulator and two 12 v gel cell batteries in series. Any = thoughts as to where I should look?

------=_NextPart_000_020B_01CA8DE1.EF4428E0--