X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 25 Mar 2009 08:16:30 -0400 Message-ID: X-Original-Return-Path: Received: from pfepb.post.tele.dk ([195.41.46.236] verified) by logan.com (CommuniGate Pro SMTP 5.2.13) with ESMTP id 3558604 for lml@lancaironline.net; Wed, 25 Mar 2009 05:48:47 -0400 Received-SPF: none receiver=logan.com; client-ip=195.41.46.236; envelope-from=tj@yacht-pool.dk Received: from TIM (0x5736f596.cpe.ge-0-1-0-1111.hadnqu1.customer.tele.dk [87.54.245.150]) by pfepb.post.tele.dk (Postfix) with SMTP id E8214F8402E for ; Wed, 25 Mar 2009 10:48:09 +0100 (CET) X-Original-Message-ID: From: =?iso-8859-1?Q?Tim_J=F8rgensen?= X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Re: Fuel selector Valve question X-Original-Date: Wed, 25 Mar 2009 10:48:19 +0100 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_02CA_01C9AD37.35C131F0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5512 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 This is a multi-part message in MIME format. ------=_NextPart_000_02CA_01C9AD37.35C131F0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable "I do have an auto fill system in place for the header. I have 2 sensors = (high and low) in the header and they activate the wing transfer pumps = to keep the header full. I was just worried that if my header line = clogged for any reason I would not be able to get fuel to from another = source (wings)." I have installed the very elegant autofill computer with sensors from = PP-Avionics. Realizing that this introduces yet another possible source of failure, I = have installed two transfer pumps in series from either wing tank. The primary pumps run automatically off the fuel computer, the secondary = (backup) pumps run off manual illuminated switches installed on either = side of the fuel computer and are fed from another circuit breaker for = absolute redundancy. Yes, the weight penalty is some 1.5 pounds, but I think it is well worth = it since I won=B4t have to abort a mission in case of a broken fuel = computer or transfer pump. Anyway, as nature would have it, I probably wouldn=B4t detect a failed = fuel computer until the engine went silent.......... Regards Tim Jorgensen 360 Gamma (MKIIOBFB) in the paint shop ------=_NextPart_000_02CA_01C9AD37.35C131F0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

"I do have an auto fill system in place for the header. I have = 2=20 sensors (high and low) in the header and they activate the wing transfer = pumps=20 to keep the header full. I was just worried that if my header line = clogged for=20 any reason I would not be able to get fuel to from another source=20 (wings)."

I have installed the very elegant autofill computer with sensors = from=20 PP-Avionics.

Realizing that this introduces yet another possible = source of=20 failure, I have installed two transfer pumps in series from either = wing=20 tank.

The primary pumps run automatically off the fuel computer, the = secondary (backup) pumps run off manual illuminated switches installed = on either=20 side of the fuel computer and are fed from another circuit breaker for = absolute=20 redundancy.

Yes, the weight penalty is some 1.5 pounds, but I think it is well = worth it=20 since I won=B4t have to abort a mission in case = of a broken fuel=20 computer or transfer pump.

Anyway, as nature would have it, I probably wouldn=B4t detect a = failed fuel=20 computer until the engine went silent..........

Regards

Tim Jorgensen

360 Gamma (MKIIOBFB) in the paint shop

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