Return-Path: Received: from imf18aec.mail.bellsouth.net ([205.152.59.66] verified) by logan.com (CommuniGate Pro SMTP 4.3c1) with ESMTP id 726432 for flyrotary@lancaironline.net; Sat, 12 Feb 2005 14:13:39 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.66; envelope-from=sqpilot@bellsouth.net Received: from [209.214.45.129] by imf18aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050212191251.XKCX2060.imf18aec.mail.bellsouth.net@[209.214.45.129]> for ; Sat, 12 Feb 2005 14:12:51 -0500 Received: from 127.0.0.1 (AVG SMTP 7.0.300 [265.8.7]); Sat, 12 Feb 2005 13:12:41 -0600 Message-ID: <007101c51136$d1e5ed60$812dd6d1@paul52u7f5qyav> From: "Paul" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Vapor Lock Date: Sat, 12 Feb 2005 13:12:39 -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-Type: multipart/mixed; boundary="=======AVGMAIL-420E55291A8B=======" --=======AVGMAIL-420E55291A8B======= Content-Type: multipart/alternative; boundary="----=_NextPart_000_006E_01C51104.872ECDA0" ------=_NextPart_000_006E_01C51104.872ECDA0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Thank you again, Perry. It seems pretty unanimous that I need to vent = the sump tank. Not all that difficult, and I will be able to sleep = better. Paul Conner ----- Original Message -----=20 From: Perry Mick=20 To: Rotary motors in aircraft=20 Sent: Saturday, February 12, 2005 7:51 AM Subject: [FlyRotary] Vapor Lock Hi, Perry....One question....Does your unburned fuel (from the fuel = rail) go back into your sump tank also? Or do you return the unused = fuel to one of your fuel tanks? If I were returning fuel to one of the = main tanks, I would think that venting the sump would be appropriate, = but since I am sending fuel undere pressure back into the sump tank, I = am concerned that once the sump tank is full, the additional fuel pumped = back into the sump tank would take the path of least resistance....out = the vent instead of back up the fuel line into the tank? Thanks for = your input. Paul Conner I have the stock Long-EZ fuel system, lines from the main tank run = forward to the fuel selector valve in the cockpit. The selected main = runs back to the sump tank. I have two Mazda HP pumps inside the sump = tank. Fuel return from the fuel rail is to the sump tank.=20 Fuel does not go out the sump tank vent, because the main tanks are = vented as well, and the whole system will tend to seek a common level. Perry -------------------------------------------------------------------------= ----- 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 ------=_NextPart_000_006E_01C51104.872ECDA0 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
Thank you again, Perry.  It seems = pretty=20 unanimous that I need to vent the sump tank. Not all that difficult, and = I will=20 be able to sleep better.  Paul Conner
----- Original Message -----
From:=20 Perry=20 Mick
Sent: Saturday, February 12, = 2005 7:51=20 AM
Subject: [FlyRotary] Vapor = Lock

Hi, Perry....One = question....Does=20 your unburned fuel (from the fuel rail) go back into your sump tank=20 also?   Or do you return the unused fuel to one of your fuel = tanks?  If I were returning fuel to one of the main tanks, I = would think=20 that venting the sump would be appropriate, but since I am sending = fuel undere=20 pressure back into the sump tank, I am concerned that once the sump = tank is=20 full, the additional fuel pumped back into the sump tank would take = the path=20 of least resistance....out the vent instead of back up the fuel line = into the=20 tank?   Thanks for your input.  Paul = Conner

I have the stock Long-EZ fuel system, lines from the = main tank=20 run forward to the fuel selector valve in the cockpit. The selected = main runs=20 back to the sump tank. I have two Mazda HP pumps inside the sump tank. = Fuel=20 return from the fuel rail is to the sump tank.

Fuel does not = go out=20 the sump tank vent, because the main tanks are vented as well, and the = whole=20 system will tend to seek a common=20 level.

Perry

No virus found in this incoming message.
Checked by AVG=20 Anti-Virus.
Version: 7.0.300 / Virus Database: 265.8.7 - Release = Date:=20 2/10/2005
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