Return-Path: Received: from [24.25.9.101] (HELO ms-smtp-02-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.3c1) with ESMTP id 727741 for flyrotary@lancaironline.net; Sun, 13 Feb 2005 21:04:07 -0500 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.101; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-185-127.carolina.rr.com [24.74.185.127]) by ms-smtp-02-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id j1E23Kee018321 for ; Sun, 13 Feb 2005 21:03:21 -0500 (EST) Message-ID: <000c01c51239$618466b0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Vapor lock in sump/header tank. Date: Sun, 13 Feb 2005 21:03:26 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0007_01C5120F.7636A7F0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0007_01C5120F.7636A7F0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Finn, Per our conversation in Jan at LakeLand, I am 99% (well, 95%) convinced = that your bubbles are indeed due to heating and not air leaks. When are = you going to do a temp reroute of your fuel line away from the bottom of = the aircraft? =20 Ed A ----- Original Message -----=20 From: Finn Lassen=20 To: Rotary motors in aircraft=20 Sent: Sunday, February 13, 2005 8:23 PM Subject: [FlyRotary] Re: Vapor lock in sump/header tank. I'm beginning to think that it takes very little heating to get vapour = on the suction side of the pumps. Probably especially with auto gas. The = lower the pressure, the lower the boiling point, right? Finn (still have not tried returning fuel from the "unused" pump to = the tank) Ed Anderson wrote: In Paul's case, I am not certain it was vapor lock since he = mentioned he found the his header tank cool to the touch. Certainly not = a definitive temperature sensor - but a reasonable one. Certainly not = to be discounted as a possible source of the problem and it possibility = needs to be confirmed or eliminated. ------=_NextPart_000_0007_01C5120F.7636A7F0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Finn,
 
Per our conversation in Jan at = LakeLand, I am 99%=20 (well, 95%) convinced that your bubbles are indeed due to heating and = not air=20 leaks.  When are you going to do a temp reroute of your fuel line = away from=20 the bottom of the aircraft? 
 
Ed A
----- Original Message -----
From:=20 Finn=20 Lassen
Sent: Sunday, February 13, 2005 = 8:23=20 PM
Subject: [FlyRotary] Re: Vapor = lock in=20 sump/header tank.

I'm beginning to think that it takes very little = heating to get=20 vapour on the suction side of the pumps. Probably especially with auto = gas.=20 The lower the pressure, the lower the boiling point, = right?

Finn (still=20 have not tried returning fuel from the "unused" pump to the = tank)

Ed=20 Anderson wrote:
 In Paul's case, I am not = certain it was=20 vapor lock since he mentioned he found the his header tank cool to = the=20 touch.  Certainly not a definitive temperature sensor - but a=20 reasonable one.  Certainly not to be discounted as a possible = source of=20 the problem and it possibility needs to be confirmed or=20 eliminated.
------=_NextPart_000_0007_01C5120F.7636A7F0--