X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao103.cox.net ([68.230.241.43] verified) by logan.com (CommuniGate Pro SMTP 5.3.5) with ESMTP id 4218746 for flyrotary@lancaironline.net; Mon, 12 Apr 2010 13:27:49 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.43; envelope-from=alventures@cox.net Received: from fed1rmimpo02.cox.net ([70.169.32.72]) by fed1rmmtao103.cox.net (InterMail vM.8.00.01.00 201-2244-105-20090324) with ESMTP id <20100412172714.DMFY20088.fed1rmmtao103.cox.net@fed1rmimpo02.cox.net> for ; Mon, 12 Apr 2010 13:27:14 -0400 Received: from BigAl ([72.192.128.205]) by fed1rmimpo02.cox.net with bizsmtp id 4hTD1e0074S1t5C04hTDB1; Mon, 12 Apr 2010 13:27:13 -0400 X-VR-Score: -100.00 X-Authority-Analysis: v=1.1 cv=KqzZVGv1/pIBe+XbL3gCBfL8vaFXECOST7Bs1vfp5Gs= c=1 sm=1 a=M_c8EEOBP1UA:10 a=Vegc0WxVmH5BHtpNDyThtA==:17 a=Ia-xEzejAAAA:8 a=kviXuzpPAAAA:8 a=ieSmcc3rWbpQCZbu14cA:9 a=gym4cLi-wUO5_lTOFKgA:7 a=bhAVx6RDvRTrMxl5fCY_J0pOYo8A:4 a=CjuIK1q_8ugA:10 a=EzXvWhQp4_cA:10 a=4vB-4DCPJfMA:10 a=tXRT8DPGMyvKGwcHYVMA:9 a=2PeVAf9Rkh0j_IsdhAAA:7 a=QVRADxqoZH-SxFrgquGTBor7guUA: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: Mon, 12 Apr 2010 10:27:40 -0800 Message-ID: <008C0967EF5042FFA5415B6821A1EC7E@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000E_01CADA2A.C7D1AF90" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6856 Importance: Normal Thread-Index: AcraYrty6D/MnfTJRoGyEXLHejMM1AACgf0g X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_000E_01CADA2A.C7D1AF90 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable =20 It could be that in Al's state, he can get Mogas without ethanol. = Tracy, however, in Florida, can only get it without ethanol if he buys it from specific places. Distributers that sell it, or boat docks that sell it. = It is not available from a regular gas station in Florida as far as I know. = Bill B =20 For at least the last couple of years the auto fuel I've been getting at = the pumps (Chevron) has 5-7% ethanol. I hear that some other brands of fuel (Mobil and ARCO) have more. =20 Given Tracy's and my experience with the earlier VDO senders suggests = they have since changed something. I'll check mine occasionally, but I'm not = too concerned about fire since the sender is located near the bottom of the firewall away from the exhaust side of the engine, so a few drops of = fuel with lots of air blasting through from the rad exit is not going to make = a flammable mixture. Al =20 _____ =20 From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle Sent: Monday, April 12, 2010 12:38 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Fuel Pressure sensor warning Well then, either you're very lucky, or VDO changed materials for their sensors. =20 =20 Mark On Mon, Apr 12, 2010 at 9:52 AM, Al Gietzen wrote: =20 Could the difference be that Tracy runs mo-gas which most likely = contains ethanol? =20 Mark S. =20 I have run mogas more than 95% of the total hours. =20 Al On Mon, Apr 12, 2010 at 12:05 AM, Al Gietzen wrote: 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. =20 =20 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. =20 Al G =20 =20 ------=_NextPart_000_000E_01CADA2A.C7D1AF90 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

 

It could be that in Al’s state, he can = get Mogas without ethanol.  Tracy, however, in Florida, can = only get it without ethanol if he buys it from specific places.  = Distributers that sell it, or boat docks that sell it.  It is not available from a = regular gas station in Florida as far as I know. 

Bill B

 

For at least the last couple of = years the auto fuel I’ve been getting at the pumps (Chevron) has 5-7% = ethanol.  I hear that some other brands of fuel (Mobil and ARCO) have = more.

 

Given Tracy’s and = my experience with the earlier VDO senders suggests they have since changed something.  I’ll check mine occasionally, but I’m not = too concerned about fire since the sender is located near the bottom of the firewall away from the exhaust side of the engine, so a few drops of = fuel with lots of air blasting through from the rad exit is not going to make a = flammable mixture.

Al

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle
Sent: Monday, April 12, 2010 12:38 = PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: = Fuel Pressure sensor warning

Well then, either you're very lucky, or VDO = changed materials for their sensors. 

 

Mark

On Mon, Apr 12, 2010 at 9:52 = AM, Al Gietzen <ALVentures@cox.net> wrote:

 

Could the difference be that = Tracy runs mo-gas which most likely contains ethanol? 

 Mark S.

 

I have run mogas more than 95% of the total hours.

 

Al

On Mon, Apr 12, 2010 at 12:05 = AM, Al Gietzen <ALVentures@cox.net> wrote:

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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