X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [69.171.52.140] (account marv@lancaironline.net) by logan.com (CommuniGate Pro WebUser 5.0.2) with HTTP id 849702 for lml@lancaironline.net; Mon, 28 Nov 2005 19:59:16 -0500 From: "Marvin Kaye" Subject: Re: [LML] Re: To: lml X-Mailer: CommuniGate Pro WebUser v5.0.2 Date: Mon, 28 Nov 2005 19:59:16 -0500 Message-ID: In-Reply-To: References: X-Priority: 3 MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-15"; format="flowed" Content-Transfer-Encoding: 8bit Posted for "FredE" : John, I purchased my B&C regulator about 1996. In the first few flying hours, I had several field CB trip-outs. It appeared that the over voltage circuit in the regulator was responding to some transients in my system that were otherwise not detectable. Upon conferring with B&C several times, we changed out the regulator to a later version and the problem went away and has never re-occurred after >500 hours. I understand the modification to the later version consisted of replacing a resistor in the "sense" line. Unfortunately, I don't remember the old and new revision nos., but the change occurred around Oshkosh time in 1998 as I had the problem on the way there. Your friend could well have the same problem since the earlier regulator circuit was simply too sensitive and caused the CB trips. In the case you describe, there could be a component - magneto, alternator, spark plug wires etc. which, over time, has developed some transient spikes that didn't occur before. I think your advice is good, but try checking with B&C re: revisions they made around mid 1998 to the over voltage sensing circuit. FredEgli LIV N1228E