Return-Path: Received: from imf25aec.mail.bellsouth.net ([205.152.59.73] verified) by logan.com (CommuniGate Pro SMTP 4.3c1) with ESMTP id 721383 for flyrotary@lancaironline.net; Wed, 09 Feb 2005 01:53:40 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.73; envelope-from=sqpilot@bellsouth.net Received: from [209.214.45.57] by imf25aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050209065207.OQZ2148.imf25aec.mail.bellsouth.net@[209.214.45.57]> for ; Wed, 9 Feb 2005 01:52:07 -0500 Received: from 127.0.0.1 (AVG SMTP 7.0.300 [265.8.6]); Wed, 09 Feb 2005 00:52:01 -0600 Message-ID: <00b201c50e73$dae2c610$392dd6d1@paul52u7f5qyav> From: "Paul" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Bad day at the airport Date: Wed, 9 Feb 2005 00:52:00 -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-4209B3114FDA=======" --=======AVGMAIL-4209B3114FDA======= Content-Type: multipart/alternative; boundary="----=_NextPart_000_00AF_01C50E41.902BA650" ------=_NextPart_000_00AF_01C50E41.902BA650 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Actually, it's not so sudden....I have been having problems getting the = rpm's up for months now. Even bought a smaller prop with less pitch. = This last incident was just the straw that broke the camel's back. I = have never been really happy with all the extra wiring, fuel pumps, fuel = pressure regulator, hoses, etc that an EFI requires. I am also not = pleased with the electrical demands of an EFI compared to a carburetor. = I don't know yet what system I will opt for....just doing the homework, = and I thought this site would be a good place to start. Paul Conner ----- Original Message -----=20 From: Tracy Crook=20 To: Rotary motors in aircraft=20 Sent: Tuesday, February 08, 2005 6:14 PM Subject: [FlyRotary] Re: Bad day at the airport Have you ever noticed the tendency in the experimental aircraft = community to suddenly run off in a completely new direction based on a = single mishap? And this without ever really understanding what caused = the problem to begin with. =20 Just had to ask. Tracy Do you have a bleed circuit between your pump and fuel pressure regulator? Do you have heat shields on your fuel lines? My guess is = that you may have experienced vapor lock. Without a bleed circuit, the = fuel pump can't produce enough pressure to overcome the fuel pressure regulator This should only be an issue if the pump is not located at the = lowest point in the line from the tank. As long as there is liquid at = the pump inlet - no problem. Al -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.8.6 - Release Date: 2/7/2005 ------=_NextPart_000_00AF_01C50E41.902BA650 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
Actually, it's not so sudden....I have been = having=20 problems getting the rpm's up for months now. Even bought a = smaller=20 prop with less pitch.  This last incident was just the straw that = broke the=20 camel's back.  I have never been really happy with all the extra = wiring,=20 fuel pumps, fuel pressure regulator, hoses, etc that an EFI = requires.  I am=20 also not pleased with the electrical demands of an EFI compared to a=20 carburetor.  I don't know yet what system I will opt for....just = doing the=20 homework, and I thought this site would be a good place to start. Paul=20 Conner
----- Original Message -----
From:=20 Tracy = Crook
Sent: Tuesday, February 08, = 2005 6:14=20 PM
Subject: [FlyRotary] Re: Bad = day at the=20 airport

Have you ever noticed the tendency in the experimental aircraft = community=20 to suddenly run off in a completely new direction based on a = single =20 mishap?  And this without ever really understanding what caused = the=20 problem to begin with. 
 
Just had to ask.
 
Tracy

Do you have a bleed circuit between your = pump and=20 fuel pressure

regulator? Do you have heat shields on = your fuel=20 lines? My guess is that

you may have experienced vapor lock.  = Without a=20 bleed circuit, the fuel

pump can't produce enough pressure to = overcome the=20 fuel pressure

regulator

 

This = should only=20 be an issue if the pump is not located at the lowest point in the = line from=20 the tank.  As long as there is liquid at the pump inlet =96 no=20 problem.

 

Al

No virus found in this incoming message.
Checked by AVG=20 Anti-Virus.
Version: 7.0.300 / Virus Database: 265.8.6 - Release = Date:=20 2/7/2005
------=_NextPart_000_00AF_01C50E41.902BA650-- --=======AVGMAIL-4209B3114FDA======= 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: 265.8.6 - Release Date: 2/7/2005 --=======AVGMAIL-4209B3114FDA=======--