Return-Path: Received: from imf18aec.mail.bellsouth.net ([205.152.59.66] verified) by logan.com (CommuniGate Pro SMTP 4.3c2) with ESMTP id 750906 for flyrotary@lancaironline.net; Sat, 19 Feb 2005 21:20:25 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.66; envelope-from=sqpilot@bellsouth.net Received: from [209.214.45.41] by imf18aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050220021940.LJAX2073.imf18aec.mail.bellsouth.net@[209.214.45.41]> for ; Sat, 19 Feb 2005 21:19:40 -0500 Received: from 127.0.0.1 (AVG SMTP 7.0.300 [266.1.0]); Sat, 19 Feb 2005 20:19:29 -0600 Message-ID: <006901c516f2$9a7f0700$292dd6d1@paul52u7f5qyav> From: "Paul" To: "Rotary motors in aircraft" Subject: Fuel system changes for SQ2000 Date: Sat, 19 Feb 2005 20:19:27 -0600 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="=======AVGMAIL-4217F3B1735A=======" --=======AVGMAIL-4217F3B1735A======= Content-Type: multipart/alternative; boundary="----=_NextPart_000_0066_01C516C0.4FC7E740" ------=_NextPart_000_0066_01C516C0.4FC7E740 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Just an update regarding my heat soak/vapor lock fuel issue and fuel = system changes. I have successfully duplicated my vapor lock fuel issue = several times (on the ground this time). There is little to no doubt = that what I experienced was heat related. I have firesleeved all fuel lines. I installed a vent line from = the top of the sump tank to the top of my left strake fuel tank. (This = can easily be removed or replaced with a shraeder valve). I have been considering what Tracy, Herb Sanders and a few others = have said about the Facet fuel pump possibly being a problem. I = temporarily disconnected the in-line Facet fuel pump and bypassed it = with a short length of 3/8" ID clear tubing. While I had the Facet pump = disconnected, I found that I could not blow through it in the direction = that is opposite normal fuel flow. It may be possible, as many have = suggested, that any bubbles in the fuel line that would normally be able = to work their way uphill and back into the main tanks were prevented = from doing so by the one-way Facet fuel pump. I will run the engine = again until it is hot enough to go into it's dying throes of fuel = starvation, and observe if there are any bubbles in the newly installed = clear fuel line, working their way back towards the tank. Of course if I = am lucky and the bubbles work their way to the tank and the engine does = not starve for fuel, we may have something here. I think that the clear = tubing may reveal some of it's hidden secrets. Can't hurt. I figure = the more information I can obtain from my fuel system, the better = understanding I will have of it. I wish to thank Tracy, Ed, Herb, Al, Jim S, Kelly, Charlie, Perry, = Wendell, Mark, Dennis, Bulent, Bill, Tom, Bob, Marvin, Dave, George, = Leon, Todd, John, William, (OK I won't go through all the names like an = Oscar winner) for all of their input and suggestions. Jim Sower and Herb = Sanders even took the time to call me at home. I am trying a few = suggestions one at a time and hopefully I will end up with a = vaporlock-free fuel system. I have been searching the internet for prefabricated ram air scoops = similar to AL's, but so far, most are for car hoods, and too large. I = know I can make one....just getting lazy, and would rather pay for one = and be done with it. Thanks again to all who offerd advise and ideas. I = will post results soon. Take care. Paul Conner ------=_NextPart_000_0066_01C516C0.4FC7E740 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable

Just an update regarding my heat = soak/vapor lock=20 fuel issue and fuel system changes. I have successfully duplicated = my vapor=20 lock fuel issue several times (on the ground this time). There is little = to no=20 doubt that what I experienced was heat related.

I have = firesleeved=20 all fuel lines. I installed a vent line from the top of the sump tank to = the top=20 of my left strake fuel tank. (This can easily be removed or replaced = with a=20 shraeder valve).

I have been = considering what=20 Tracy, Herb Sanders and a few others have said about the Facet fuel pump = possibly being a problem. I temporarily disconnected the in-line = Facet=20 fuel pump and bypassed it with a short length of 3/8" ID clear = tubing. =20 While I had the Facet pump disconnected, I found that I could not blow = through=20 it in the direction that is opposite normal fuel flow. It may be = possible,=20 as many have suggested, that any bubbles in the fuel line that would = normally be=20 able to work their way uphill and back into the main tanks were = prevented from=20 doing so by the one-way Facet fuel pump. I will run the engine = again until=20 it is hot enough to go into it's dying throes of fuel starvation, and = observe if=20 there are any bubbles in the newly installed clear fuel line, working = their way=20 back towards the tank. Of course if I am lucky and the bubbles=20 work their way to the tank and the engine does not starve for fuel, = we may=20 have something here. I think that the clear tubing may reveal some = of it's=20 hidden secrets. Can't hurt. I figure the more information I = can=20 obtain from my fuel system, the better understanding I will have of=20 it.

I wish to thank = Tracy, Ed, Herb,=20 Al, Jim S, Kelly, Charlie, Perry, Wendell, Mark, Dennis, Bulent, = Bill, Tom,=20 Bob, Marvin, Dave, George, Leon, Todd, John, William, (OK I = won't go=20 through all the names like an Oscar winner) for all of their input and=20 suggestions. Jim Sower and Herb Sanders even took the time to = call me=20 at home. I am trying a few suggestions one at a time and = hopefully I will end up with a vaporlock-free fuel system.

I have been = searching the=20 internet for prefabricated ram air scoops similar to AL's, but so far, = most are=20 for car hoods, and too large. I know I can make one....just = getting lazy,=20 and would rather pay for one and be done with it. Thanks again to all = who offerd=20 advise and ideas. I will post results soon. Take care. = Paul=20 Conner

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