X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 1 [X] Return-Path: Sender: To: lml Date: Thu, 01 Feb 2007 20:03:10 -0500 Message-ID: X-Original-Return-Path: Received: from alnrmhc12.comcast.net ([204.127.225.92] verified) by logan.com (CommuniGate Pro SMTP 5.1.5) with ESMTP id 1805354 for lml@lancaironline.net; Thu, 01 Feb 2007 19:33:15 -0500 Received-SPF: none receiver=logan.com; client-ip=204.127.225.92; envelope-from=mjrav@comcast.net Received: from mjr (c-24-91-151-131.hsd1.ma.comcast.net[24.91.151.131]) by comcast.net (alnrmhc12) with SMTP id <20070202003228b1200k6leee>; Fri, 2 Feb 2007 00:32:28 +0000 X-Original-Message-ID: <001201c74661$68e8ae80$83975b18@mjr> From: "Mark Ravinski" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Fuel Delivery X-Original-Date: Thu, 1 Feb 2007 19:30:38 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000F_01C74637.73C56390" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1807 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1896 This is a multi-part message in MIME format. ------=_NextPart_000_000F_01C74637.73C56390 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Scott, Sometime, put a bucket under your gascolator, open the drain and time = for a minute. See how many gallons you get. (GPM gravity feed)=20 I'll bet you're sucking fuel out of your tanks anytime you have more = throttle in than say- low cruise. Mark Ravinski N360KB 1398 hrs ( almost all of it sucking fuel) ----- Original Message -----=20 From: Sky2high@aol.com=20 In other words, the engine pump can draw fuel from below itself - like = out of very low wings. Hmmmmm... I wonder. If the pump is actually = sucking on the fuel line does that lower fluid pressure allow it to = vaporize more easily? Especially, can this occur if the path to the = pump or the pump itself is heated somewhat? Does this set up pump = cavitation? Certainly a boost pump could maintain a positive pressure = at the engine pump inlet. ------=_NextPart_000_000F_01C74637.73C56390 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Scott,

Sometime, put a bucket under your gascolator, open the drain and = time for a=20 minute. See how many gallons you get. (GPM gravity = feed)

I'll bet you're sucking fuel out of your tanks anytime you have = more=20 throttle in than say- low cruise.

Mark Ravinski

N360KB 1398 hrs ( almost all of it sucking fuel)

----- Original Message -----
From:=20 Sky2high@aol.com=20

In other words, the engine pump can draw fuel from below itself - = like=20 out of very low wings. Hmmmmm... I wonder. If the pump is = actually=20 sucking on the fuel line does that lower fluid pressure allow it to = vaporize=20 more easily? Especially, can this occur if the path to the = pump or=20 the pump itself is heated somewhat? Does this set up pump=20 cavitation? Certainly a boost pump could maintain a = positive=20 pressure at the engine pump inlet. =20

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