X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 06 Dec 2011 08:43:59 -0500 Message-ID: X-Original-Return-Path: Received: from snt0-omc3-s35.snt0.hotmail.com ([65.55.90.174] verified) by logan.com (CommuniGate Pro SMTP 5.4.2) with ESMTP id 5293255 for lml@lancaironline.net; Mon, 05 Dec 2011 20:39:52 -0500 Received-SPF: pass receiver=logan.com; client-ip=65.55.90.174; envelope-from=scottekeighan@sympatico.ca Received: from SNT129-W44 ([65.55.90.136]) by snt0-omc3-s35.snt0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4675); Mon, 5 Dec 2011 17:39:15 -0800 X-Original-Message-ID: X-Original-Return-Path: scottekeighan@sympatico.ca Content-Type: multipart/alternative; boundary="_5bf6193d-b3af-4e93-a959-f65df5e84daf_" X-Originating-IP: [207.236.24.137] From: Scott E Keighan X-Original-To: Subject: RE: [LML] Fuel Presures X-Original-Date: Tue, 6 Dec 2011 01:39:15 +0000 Importance: Normal In-Reply-To: References: MIME-Version: 1.0 X-OriginalArrivalTime: 06 Dec 2011 01:39:15.0660 (UTC) FILETIME=[DD1798C0:01CCB3B7] --_5bf6193d-b3af-4e93-a959-f65df5e84daf_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I routinely see fuel pressures in the 9 to 14 range all the time. I have n= ever had any problems. This past weekend I was running at 14psi at 6500ft=2C 2400rpm and 21.5mp=2C= 14.7gph ROP=2C indicating 190kts with no issues.=20 It seems the higher I fly the lower the PSI. I believe that it is recommend= ed to run low boost above 10=2C000ft to help with this issue.=20 =20 Now=2C I must admit the first time I saw 9psi it did get my attention. =20 Scott Keighan LIV IO-550N =20 =20 To: lml@lancaironline.net Date: Mon=2C 5 Dec 2011 19:24:13 -0500 From: randy@aoaircrafters.com Subject: [LML] Holy crap I have been seeing indicated fuel pressures (9 - 13 PSI) on my VM1000 that = are too low for the fuel servo (requires around 20 PSI) to operate at - but= it continues to operate. So after checking and modifying the fuel lines (changed from series to para= llel for the boost and mechanical pump)=2C removing the mechanical fuel pum= p and having it checked out at the manufacturer=2C we decided to just repla= ce the fuel pressure sensor - figuring it would be under $100 to replace. =20 I called JP Instruments and got a quote of $650. Holy crap. =20 The technician told me I could field-test the sensor and that it has an out= put of 1mv per PSI input. ie 5 mv for 5 PSI=2C 10 mv for 10 PSI=2C 50 mv f= or 50 PSI etc.. =20 Does anyone out there want to sell a working-but-not-using VM1000 fuel pres= sure sensor (the higher pressure one) for fuel injected engines? =20 Does a guy have any options or FP sensors other than VM1000 brand that put = out that kind of output? =20 Randy Hartman LNC 2 - N360DE - 450 hours = --_5bf6193d-b3af-4e93-a959-f65df5e84daf_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

I routinely see fuel pressures in the 9 to 14 range all the time. =3B I= have =3Bnever had any problems.
This past weekend I was running at 14psi at 6500ft=2C 2400rpm and 21.5mp=2C= 14.7gph ROP=2C indicating 190kts =3Bwith no issues. =3B
It seems the higher I fly the lower the PSI. I believe that =3Bit is re= commended to run low boost above
10=2C000ft to help with this issue. =3B
=3B
Now=2C I must admit the first time I saw 9psi =3Bit did get my attentio= n.
=3B
Scott Keighan
LIV IO-550N
=3B

=3B

To: lml@lancaironline.net
Date: Mon=2C 5 Dec 2011 19:24:13 -0500
From= : randy@aoaircrafters.com
Subject: [LML] Holy crap

I have been seeing indicated fuel pressures (9 - 13= PSI) on my VM1000 that are too low for the fuel servo (requires around 20 = PSI) to operate at - but it continues to operate.

So after checking and modifying the fuel lines (cha= nged from series to parallel for the boost and mechanical pump)=2C removing= the mechanical fuel pump and having it checked out at the manufacturer=2C = we decided to just replace the fuel pressure sensor - figuring it would be = under $100 to replace.

=3B

I called JP Instruments and got a quote of $650.&nb= sp=3B Holy crap.

=3B

The technician told me I could field-test the senso= r and that it has an output of 1mv per PSI input. =3B ie 5 mv for 5 PSI= =2C 10 mv for 10 PSI=2C 50 mv for 50 PSI etc..

=3B

Does anyone out there want to sell a working-but-no= t-using VM1000 fuel pressure sensor (the higher pressure one) for fuel inje= cted engines?

=3B

Does a guy have any options or FP sensors other tha= n VM1000 brand that put out that kind of output?

=3B

Randy Hartman

LNC 2 - N360DE - 450 hours

=

= --_5bf6193d-b3af-4e93-a959-f65df5e84daf_--