X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao106.cox.net ([68.230.241.40] verified) by logan.com (CommuniGate Pro SMTP 5.3.5) with ESMTP id 4218070 for flyrotary@lancaironline.net; Mon, 12 Apr 2010 00:05:22 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.40; envelope-from=alventures@cox.net Received: from fed1rmimpo03.cox.net ([70.169.32.75]) by fed1rmmtao106.cox.net (InterMail vM.8.00.01.00 201-2244-105-20090324) with ESMTP id <20100412040445.LOBJ1296.fed1rmmtao106.cox.net@fed1rmimpo03.cox.net> for ; Mon, 12 Apr 2010 00:04:45 -0400 Received: from BigAl ([72.192.128.205]) by fed1rmimpo03.cox.net with bizsmtp id 4U4l1e00U4S1t5C04U4lux; Mon, 12 Apr 2010 00:04:46 -0400 X-VR-Score: 0.00 X-Authority-Analysis: v=1.1 cv=yjuDh3Ma92GrVaJxYD7gfORM7ilP1Knqouyx6SOEBcg= c=1 sm=1 a=M_c8EEOBP1UA:10 a=Vegc0WxVmH5BHtpNDyThtA==:17 a=gEm_tfJg8oSC6Zyucn8A:9 a=dOa4Uez1qf-zxHcO7KhvkOI26kkA:4 a=CjuIK1q_8ugA:10 a=zlfgb6A_r8OYpfHZ5hkA:9 a=w3-EaMrnoCOXpf4HGW8A:7 a=YjoZatKGG9wXvSQwFtdMBdewEw8A:4 a=Vegc0WxVmH5BHtpNDyThtA==:117 X-CM-Score: 0.00 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Fuel Pressure sensor warning Date: Sun, 11 Apr 2010 21:05:11 -0800 Message-ID: <82CD9AC5B27E4A56903A2C2785B59CAF@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000C_01CAD9BA.AC86F2B0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6856 Importance: Normal Thread-Index: AcrY9bNJbsIZz6+KSaywgBdGYdFiYgBB2HQg In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 This is a multi-part message in MIME format. ------=_NextPart_000_000C_01CAD9BA.AC86F2B0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit SO, I can no longer recommend using the VDO pressure sensors for use on fuel systems. Either an isolator must be used or a sensor rated for fuel exposure be installed. I've been using one on my -4 for >7 years with no problems. About 3 years ago VDO started putting a sticker in the pressure sensor package saying not to use them on fuel pressure applications. I suspect they changed something in the manufacturing process. I've had my VDO pressure sensor in service on the fuel system since first engine run in Jan, 2004. Still doing fine. Must be they changed something after that. Al G ------=_NextPart_000_000C_01CAD9BA.AC86F2B0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

SO, I = can no longer recommend using the VDO pressure sensors for use on fuel = systems. Either an isolator must be used or a sensor rated for fuel exposure be installed. I've been using one on my -4 for >7 years with no = problems. About 3 years ago VDO started putting a sticker in the pressure = sensor package saying not to use them on fuel pressure applications. I = suspect they changed something in the manufacturing process.

I’ve had my VDO pressure = sensor in service on the fuel system since first engine run in Jan, 2004. = Still doing fine. Must be they changed something after = that.

Al G

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