X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: <13brv3@bellsouth.net> Received: from imf24aec.mail.bellsouth.net ([205.152.59.72] verified) by logan.com (CommuniGate Pro SMTP 5.0.3) with ESMTP id 866244 for flyrotary@lancaironline.net; Tue, 06 Dec 2005 21:56:23 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.72; envelope-from=13brv3@bellsouth.net Received: from ibm71aec.bellsouth.net ([65.6.194.9]) by imf24aec.mail.bellsouth.net with ESMTP id <20051207025538.DZBV17186.imf24aec.mail.bellsouth.net@ibm71aec.bellsouth.net> for ; Tue, 6 Dec 2005 21:55:38 -0500 Received: from rd ([65.6.194.9]) by ibm71aec.bellsouth.net with ESMTP id <20051207025537.KJGG22581.ibm71aec.bellsouth.net@rd> for ; Tue, 6 Dec 2005 21:55:37 -0500 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] fuel system issues Date: Tue, 6 Dec 2005 20:55:37 -0600 Message-ID: <000001c5fad9$b35470f0$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C5FAA7.68BA00F0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C5FAA7.68BA00F0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable When the high pressure fuel pump in the plane is running, there are no bubbles between the tank and the pump, no bubbles in the fuel rail or = lines between the pump and the pressure regulator, and there are bubbles in = the return line between the pressure regulator and the wing tank. As a = separate test, I connected a fuel pressure regulator to the RX7 donor car's fuel = tank which was filled with fuel and had the original submerged fuel pump in = it with a clean inlet sock. Running the pump in this setup gave the same results: bubbles in the return line, but nowhere else. Great investigation Steve! This is the sort of thoroughness that will = be a real comfort when you're actually flying. =20 =20 Cheers, Rusty=20 ------=_NextPart_000_0001_01C5FAA7.68BA00F0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

When the high pressure fuel pump in the plane is = running, there=20 are no bubbles between the tank and the pump, no bubbles in the fuel = rail or=20 lines between the pump and the pressure regulator, and there are bubbles = in the=20 return line between the pressure regulator and the wing tank.  As a = separate test, I connected a fuel pressure regulator to the RX7 donor = car’s fuel=20 tank which was filled with fuel and had the original submerged fuel pump = in it=20 with a clean inlet sock.  Running the pump in this setup gave the = same=20 results:  bubbles in the return line, but nowhere else.

Great = investigation=20 Steve!  This is the sort of thoroughness that will be a real = comfort when=20 you're actually flying. 
 
Cheers,
Rusty =



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