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X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: <13brv3@bellsouth.net> Received: from imf23aec.mail.bellsouth.net ([205.152.59.71] verified) by logan.com (CommuniGate Pro SMTP 4.3.2) with ESMTP id 968109 for flyrotary@lancaironline.net; Mon, 30 May 2005 15:39:55 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.71; envelope-from=13brv3@bellsouth.net Received: from ibm66aec.bellsouth.net ([65.6.194.9]) by imf23aec.mail.bellsouth.net with ESMTP id <20050530193910.XBFF8541.imf23aec.mail.bellsouth.net@ibm66aec.bellsouth.net> for ; Mon, 30 May 2005 15:39:10 -0400 Received: from rd ([65.6.194.9]) by ibm66aec.bellsouth.net with ESMTP id <20050530193909.BFGI5308.ibm66aec.bellsouth.net@rd> for ; Mon, 30 May 2005 15:39:09 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: will EFI pumps pump air Date: Mon, 30 May 2005 14:39:29 -0500 Message-ID: <000701c5654f$4c0588a0$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0008_01C56525.632F80A0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0008_01C56525.632F80A0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I'm 'T'ing the output of the transfer pump into the supply line from the main tank before the gascolator. The transfer pump will only have to overcome the head of the fuel, about 3 feet or so to push fuel back into = the main tank. Is there anything I'm missing that would keep this from = working? =20 Good thought, but Tracy has a point about these pumps not being sealed. = On top of that, when you run the transfer pump, and the tank runs dry, I = think it would stand more chance of pumping air than the high pressure EFI scenario we were talking about. Just a guess though, like with = everything else. =20 Rusty =20 ------=_NextPart_000_0008_01C56525.632F80A0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

I'm 'T'ing the output of the transfer pump into the = supply line=20 from the main tank before the gascolator. The transfer pump will = only have=20 to overcome the head of the fuel, about 3 feet or so to push fuel back = into the=20 main tank. Is there anything I'm missing that would keep this from = working?

Good = thought, but Tracy=20 has a point about these pumps not being sealed. On top of that, = when you=20 run the transfer pump, and the tank runs dry, I think it would stand = more chance=20 of pumping air than the high pressure EFI scenario we were talking=20 about. Just a guess though, like with everything=20 else.

Rusty

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