Return-Path: Received: from imf20aec.mail.bellsouth.net ([205.152.59.68] verified) by logan.com (CommuniGate Pro SMTP 4.3c1) with ESMTP id 725365 for flyrotary@lancaironline.net; Fri, 11 Feb 2005 14:39:57 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.68; envelope-from=sqpilot@bellsouth.net Received: from [209.214.45.60] by imf20aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050211193912.TOWG1977.imf20aec.mail.bellsouth.net@[209.214.45.60]> for ; Fri, 11 Feb 2005 14:39:12 -0500 Received: from 127.0.0.1 (AVG SMTP 7.0.300 [265.8.7]); Fri, 11 Feb 2005 13:39:04 -0600 Message-ID: <038101c51071$571c52b0$3c2dd6d1@paul52u7f5qyav> From: "Paul" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Vapor lock Date: Fri, 11 Feb 2005 13:39:02 -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-Transfer-Encoding: 7bit Content-Type: text/plain; format=flowed; charset=iso-8859-1; reply-type=original ----- Original Message ----- From: "Ernest Christley" To: "Rotary motors in aircraft" Sent: Friday, February 11, 2005 12:24 PM Subject: [FlyRotary] Vapor lock > I'm not sure that I understand vapor lock completely. Is the problem > that the fuel gets hot, or that the fuel boils and then the pumps no > longer work? > > I have a plan for a stone cold simple fuel system. With only one tank > positioned high, I plan to put both fuel pumps directly under the tank > which is located behind the cabin (tractor configuration). Position the > fuel regulator beside the pump, and I will only having a single line > running out to the engine compartment. Think of it as one LONG header. > The issue will be that the fuel will not 'circulate'. What goes out to > the header at the engine will stay there till it gets used. > > Is this a prescription for 'vapor lock', or will any boiling fuel simply > get blown through the injectors? > Hi, Ernest....I might have it wrong, but I seem to recall that I was told to put the fuel pressure regulator just AFTER the injectors/fuel rail. That's what I did...maybe that's part of my problem? Paul Conner -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- >>> Homepage: http://www.flyrotary.com/ >>> Archive: http://lancaironline.net/lists/flyrotary/List.html > -------------------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.8.7 - Release Date: 2/10/2005 -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.8.7 - Release Date: 2/10/2005