X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 26 Apr 2013 19:49:42 -0400 Message-ID: X-Original-Return-Path: Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122] verified) by logan.com (CommuniGate Pro SMTP 6.0.4) with ESMTP id 6228831 for lml@lancaironline.net; Fri, 26 Apr 2013 19:42:07 -0400 Received-SPF: pass receiver=logan.com; client-ip=71.74.56.122; envelope-from=kkellner1@new.rr.com X-Original-Return-Path: X-Authority-Analysis: v=2.0 cv=GtrACzJC c=1 sm=0 a=obLwkm3ISv3u5N1fLH+lKQ==:17 a=Iy1csxky15oA:10 a=05ChyHeVI94A:10 a=8nJEP1OIZ-IA:10 a=ayC55rCoAAAA:8 a=q3R5kvOfIuwA:10 a=o1OHuDzbAAAA:8 a=Ia-xEzejAAAA:8 a=xHSe6Uikp8TmnfNxHzEA:9 a=wPNLvfGTeEIA:10 a=E5fhy3RwCSkA:10 a=ILCZio5HsAgA:10 a=EzXvWhQp4_cA:10 a=Md54Hktbmmv-Sd-C:21 a=x4mOqz7jJKnJV_oY:21 a=obLwkm3ISv3u5N1fLH+lKQ==:117 X-Cloudmark-Score: 0 X-Authenticated-User: X-Originating-IP: 70.92.78.168 Received: from [70.92.78.168] ([70.92.78.168:4340] helo=D4SSJS91) by hrndva-oedge02.mail.rr.com (envelope-from ) (ecelerity 2.2.3.46 r()) with ESMTP id 20/2F-22134-CA01B715; Fri, 26 Apr 2013 23:41:32 +0000 X-Original-Message-ID: <995EC148E6CB4F61A0AFDFE173A0CB39@D4SSJS91> From: "Ken" X-Original-To: "Greenbacks, UnLtd." , "Lancair Mailing List" References: <3CE76A0E-7987-4F00-B8E2-7058D3289139@VERIZON.NET> Subject: Re: Prop overspeed??? X-Original-Date: Fri, 26 Apr 2013 18:41:32 -0500 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 Angier, You would surely hear the prop overspeed at 4,000 rpm. I have had three different occurrences of false alarms from my MVP-50. Twice it was the fuel pressure alarm. Both of those were caused by broken wires at the spade terminals on the fuel pressure sensor pig tail. It looked like the terminal was mashed instead of crimped onto the wire. It caused the wire to brake but not come completely apart. The intermittent connection caused the sensor to read a voltage fluctuation, which it translates into fuel pressure changes. The third occurrence was runaway RPM, and half of the other alarms at the same time. That turned out to be a bad connection at the field terminal on the #2 alternator (dual alt, dual bat). Again, causing voltage fluctuations. It was a while ago, but if I remember correctly, the very helpful folks at E.I. said that the info displayed on the MVP is mostly based off of the voltage difference between two wires in the applicable sensor. The advice I recall they gave me was to first check the connectors on the wire run to the sensor in question, and the connectors on the alternators. The connector issue aside, I think the MVP-50 is the best thing since sliced bread. Ken Kellner IV-P 14LK 920-858-7535 ----- Original Message ----- From: "Greenbacks, UnLtd." To: "Lancair Mailing List" Sent: Friday, April 26, 2013 2:09 PM Subject: Re: Prop overspeed??? Today's 2hr flight was normal in all respects with the single exception that immediately after liftoff, the MVP-50 began screaming 'check RPM'. The RPM display was close to 4000 and fuel flow spiked. Nevertheless engine sounds remained normal. Sure got my attention. At 6:29:28 and just as the gear started to come up is when the RPM indication spiked for all of about 5 seconds. Haven't seen this before. What would the common, everyday prop overspeed sound like?? not that I ever want to hear it.... Angier Ames N4ZQ -------------------------------------------------------------------------------- > > >