X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 1 [X] Return-Path: Received: from imo-d03.mx.aol.com ([205.188.157.35] verified) by logan.com (CommuniGate Pro SMTP 5.1.4) with ESMTP id 1714252 for flyrotary@lancaironline.net; Mon, 25 Dec 2006 14:27:10 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.188.157.35; envelope-from=Lehanover@aol.com Received: from Lehanover@aol.com by imo-d03.mx.aol.com (mail_out_v38_r7.6.) id q.cda.6b9daaf (40522) for ; Mon, 25 Dec 2006 14:26:18 -0500 (EST) From: Lehanover@aol.com Message-ID: Date: Mon, 25 Dec 2006 14:26:15 EST Subject: Re: [FlyRotary] fuel pumps To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1167074775" X-Mailer: 9.0 Security Edition for Windows sub 5359 X-Spam-Flag: NO -------------------------------1167074775 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 12/25/2006 2:06:43 P.M. Eastern Standard Time, grdflyguy@yahoo.com writes: Is it common procedure to use both fuel pumps on for take off & landing? Its great redundency, however, Im concerned there may be to much fuel pressure. Lou Plumbed in series (one pump feeding the second pump) would about double the pressure. Plumbed in parallel (more common) the pressure remains the same as the strongest pump. Lynn E. Hanover -------------------------------1167074775 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
In a message dated 12/25/2006 2:06:43 P.M. Eastern Standard Time,=20 grdflyguy@yahoo.com writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>Is it=20 common procedure to use both fuel pumps on for
take off & landing?=20= Its=20 great redundency, however, Im
concerned there may be to much  fuel= =20 pressure.

Lou
Plumbed in series (one pump feeding the second pump) would about double= the=20 pressure.
 
Plumbed in parallel (more common) the pressure remains the same as the=20 strongest pump.
 
Lynn E. Hanover
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