X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 13 Oct 2005 18:23:13 -0400 Message-ID: X-Original-Return-Path: Received: from imo-m25.mx.aol.com ([64.12.137.6] verified) by logan.com (CommuniGate Pro SMTP 5.0c4) with ESMTP id 763662 for lml@lancaironline.net; Thu, 13 Oct 2005 09:08:06 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.6; envelope-from=MikeEasley@aol.com Received: from MikeEasley@aol.com by imo-m25.mx.aol.com (mail_out_v38_r5.5.) id r.ce.728fd3a9 (25305); Thu, 13 Oct 2005 08:59:16 -0400 (EDT) From: MikeEasley@aol.com X-Original-Message-ID: X-Original-Date: Thu, 13 Oct 2005 08:59:15 EDT Subject: Psycho RPM Gage X-Original-To: Lancair_ES@yahoogroups.com, lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1129208355" X-Mailer: 9.0 Security Edition for Windows sub 5200 X-Spam-Flag: NO -------------------------------1129208355 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit I have the JPI EDM 900. I used the hall sensor already installed on my magneto to feed into my JPI. I have perfect RPM readings most of the time, but once in a while, usually after a long flight of 3 or more hours, I get wildly fluctuating RPM indications. The fluctuations are always above the actual RPM. They shot up above 2700 and trigger an engine warning, flashing light. Drives me crazy. All my connections have been checked. Since it only happens after a period of time, makes me wonder it heat is an issue. Any ideas? Mike -------------------------------1129208355 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

I have the JPI EDM 900. I used the hall sensor already installed=20= on=20 my magneto to feed into my JPI. I have perfect RPM readings most of th= e=20 time, but once in a while, usually after a long flight of 3 or more hours, I= get=20 wildly fluctuating RPM indications. The fluctuations are always above=20= the=20 actual RPM. They shot up above 2700 and trigger an engine warning,=20 flashing light. Drives me crazy. All my connections have been=20 checked.

Since it only happens after a period of time, makes me wonder it heat i= s an=20 issue.

Any ideas?

Mike

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