X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml Date: Sat, 23 Sep 2006 09:40:16 -0400 Message-ID: X-Original-Return-Path: Received: from imo-m16.mx.aol.com ([64.12.138.206] verified) by logan.com (CommuniGate Pro SMTP 5.1c.4) with ESMTP id 1416021 for lml@lancaironline.net; Fri, 22 Sep 2006 19:22:57 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.138.206; envelope-from=Sky2high@aol.com Received: from Sky2high@aol.com by imo-m16.mx.aol.com (mail_out_v38_r7.6.) id q.571.613754c (58677) for ; Fri, 22 Sep 2006 19:22:02 -0400 (EDT) From: Sky2high@aol.com X-Original-Message-ID: <571.613754c.3245ca1a@aol.com> X-Original-Date: Fri, 22 Sep 2006 19:22:02 EDT Subject: Re: [LML] Re: Boost pump switching X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1158967322" X-Mailer: 9.0 Security Edition for Windows sub 5330 X-Spam-Flag: NO -------------------------------1158967322 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 9/22/2006 5:14:25 P.M. Central Standard Time, fwegli@astound.net writes: I fly a norm. aspirated LIV and never use the pump, hi or lo for takeoff or landing. It loads up the engine and causes it to die - not desirable. Fred, et al, How is that possible? In hot weather, I keep the single speed boost/prime pump on for takeoffs and especially landings (NA IO 320). Without premature vaporization, the fuel pressure only goes from the normal 24-25 psi to 26-27 psi and changes nothing except for assuring that fuel will be delivered to the throttle body at something more than 12 psi (lo pressure red line). How could a properly adjusted fuel delivery system be adversely affected by a fuel pressure boost as long as the resultant pressure is in the designed pressure range? Does the boost pump force it out of range? Is this just another problem with Cont 550s? Scott Krueger AKA Grayhawk Lancair N92EX IO320 SB 89/96 Aurora, IL (KARR) A man has got to know his limitations. -------------------------------1158967322 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

In a message dated 9/22/2006 5:14:25 P.M. Central Standard Time,=20 fwegli@astound.net writes:

<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#0000ff size= =3D2>

I=20 fly a norm. aspirated LIV and never use the pump, hi or lo for takeoff or=20 landing. It loads up the engine and causes it to die - not=20 desirable.

Fred, et al,

How is that possible? In hot weather, I keep the single speed=20 boost/prime pump on for takeoffs and especially landings (NA IO 320). =20 Without premature vaporization, the fuel pressure only goes from the normal=20 24-25 psi to 26-27 psi and changes nothing except for assuring that fuel wil= l be=20 delivered to the throttle body at something more than 12 psi (lo pressu= re=20 red line). How could a properly adjusted fuel delivery system be adver= sely=20 affected by a fuel pressure boost as long as the resultant pressure is in th= e=20 designed pressure range? Does the boost pump force it out of range?&nb= sp;=20 Is this just another problem with Cont 550s?=20

Scott Krueger=20 AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL (KARR)

A m= an=20 has got to know his limitations.

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