Return-Path: Received: from imf18aec.mail.bellsouth.net ([205.152.59.66] verified) by logan.com (CommuniGate Pro SMTP 4.3c1) with ESMTP id 726442 for flyrotary@lancaironline.net; Sat, 12 Feb 2005 14:17:40 -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 <20050212191652.XLOR2060.imf18aec.mail.bellsouth.net@[209.214.45.129]> for ; Sat, 12 Feb 2005 14:16:52 -0500 Received: from 127.0.0.1 (AVG SMTP 7.0.300 [265.8.7]); Sat, 12 Feb 2005 13:16:42 -0600 Message-ID: <007c01c51137$61c26350$812dd6d1@paul52u7f5qyav> From: "Paul" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Vapor lock in sump/header tank. Date: Sat, 12 Feb 2005 13:16:40 -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-420E561A2495=======" --=======AVGMAIL-420E561A2495======= Content-Type: multipart/alternative; boundary="----=_NextPart_000_0079_01C51105.170B6AA0" ------=_NextPart_000_0079_01C51105.170B6AA0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable MessageHi, Rusty....My main tanks drain into the top of the surge tank. = The fuel comes out of the bottom of the surge tank to the EFI pumps. = The returned fuel goes back into the top of the surge tanks. No, it = won't be difficult to add a vent line to the sump tank...Maybe you could = stop over on one of your trips to fix an MRI somewhere and weld it into = the aluminum surge tank for me, so I won't have to drain the fuel. = (kidding). It looks like adding a vent to the sump tank (into one of my = mains) is what I should do, and it won't be that difficult Thanks. = Paul Conner ----- Original Message -----=20 From: Russell Duffy=20 To: Rotary motors in aircraft=20 Sent: Saturday, February 12, 2005 9:24 AM Subject: [FlyRotary] Re: Vapor lock in sump/header tank. A vent line from the top of your sump tank up to the top of both of = your main tanks, but not tied into the main tank vent system. =20 Paul, where are the lines physically located on your header tank now? = Are they all at, or near the bottom? After reading all this info about = vapor lock and header tanks, I have to agree that this is probably the = prime suspect at the moment. Vapor that builds up in the top of the = tank has to have somewhere to go. =20 I'm also assuming that you don't have return lines to your fuel tanks, = which is probably why you're running the header tank in the first place. = I've been sketching this on a notepad, and so far haven't figured out a = way to make this work without adding a vent somewhere. =20 I fear the reply to this question, but how hard would it be to add a = return line to at least one of your tanks? =20 Rusty (already behind schedule for the day)=20 -------------------------------------------------------------------------= ----- 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_0079_01C51105.170B6AA0 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Message
Hi, Rusty....My main tanks drain into = the top of=20 the surge tank. The fuel comes out of the bottom of the surge tank to = the EFI=20 pumps.  The returned fuel goes back into the top of the surge = tanks. =20 No, it won't be difficult to add a vent line to the sump tank...Maybe = you could=20 stop over on one of your trips to fix an MRI somewhere and weld it into = the=20 aluminum surge tank for me, so I won't have to drain the fuel. = (kidding). =20 It looks like adding a vent to the sump tank (into one of my mains) =  is what I should do, and it won't be that difficult  = Thanks. =20 Paul Conner
----- Original Message -----
From:=20 Russell=20 Duffy
Sent: Saturday, February 12, = 2005 9:24=20 AM
Subject: [FlyRotary] Re: Vapor = lock in=20 sump/header tank.

A vent line from the top of your sump tank up to the top=20 of both of your main tanks, but not tied into the main tank vent=20 system.  
 
Paul,=20 where are the lines physically located on your header tank = now?  Are=20 they all at, or near the bottom?  After reading all this = info=20 about vapor lock and header tanks, I have to agree that = this=20 is probably the prime suspect at the moment.  Vapor = that builds=20 up in the top of the tank has to have somewhere to=20 go.  
 
I'm also=20 assuming that you don't have return lines to your fuel tanks, = which is=20 probably why you're running the header tank in the first place.  = I've=20 been sketching this on a notepad, and so far haven't figured out a way = to make=20 this work without adding a vent=20 somewhere.  
 
I fear=20 the reply to this question, but how hard would it be to add a return = line to=20 at least one of your=20 tanks?  
 
Rusty=20 (already behind schedule for the=20 day) 

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
------=_NextPart_000_0079_01C51105.170B6AA0-- --=======AVGMAIL-420E561A2495======= Content-Type: text/plain; x-avg=cert; charset=us-ascii Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Content-Description: "AVG certification" 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 --=======AVGMAIL-420E561A2495=======--