X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 10 Jul 2011 15:07:51 -0400 Message-ID: X-Original-Return-Path: Received: from carbinge.com ([69.5.27.218] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with SMTP id 5047495 for lml@lancaironline.net; Sun, 10 Jul 2011 08:53:08 -0400 Received-SPF: none receiver=logan.com; client-ip=69.5.27.218; envelope-from=jbarrett@carbinge.com Received: (qmail 26748 invoked from network); 10 Jul 2011 12:52:32 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; h=X-Originating-IP:Reply-To:From:To:Cc:References:In-Reply-To:Subject:Date:Message-ID:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Mailer:thread-index:Content-Language; s=default; d=carbinge.com; b=iI/+6wDK0z+eqwD18Yy8vM1qLawPaMjDt79tab77tGPG9UQnLzTQCC3eAhDRAze3taQDAFSLbZ/sOwC5Q6Q8Qx0SkU+zi81FGGmqlkj4PVBlHWaVR+RxF3yQC8KZ4GS6F/8lxJwglah6rQkxD4GSx6gZs/N7k8PI1WW3pBuVnIg=; X-Originating-IP: [66.235.58.63] Reply-To: From: "John Barrett" X-Original-To: "'Lancair Mailing List'" X-Original-Cc: References: In-Reply-To: Subject: RE: [LML] Ferry Tanks X-Original-Date: Sun, 10 Jul 2011 05:52:35 -0700 X-Original-Message-ID: <0bd801cc3f00$3e2c9200$ba85b600$@com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Office Outlook 12.0 thread-index: Acw+TbqLWiBB0tBlR2iaEn2IKt+jegAATy9A Content-Language: en-us Dave, I think you know Dan Newland? I recall he made some really great aux = ferry tanks for someone a few years ago. Maybe he can tell you how they = transferred fuel? He's off to Alaska on a 10 day cruise as of = yesterday, but maybe he'll chime in if he has some information that = could be useful. John Barrett -----Original Message----- From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of = Dave Saylor Sent: Saturday, July 09, 2011 8:35 AM To: lml@lancaironline.net Subject: [LML] Ferry Tanks We're getting ready to test a ferry tank system in a IV-P. It consists of a Turtle Tank bladder in the cabin, a valve, a 30GPH Facet pump, and plumbing to the right tank. The plan is to open the valve and just let the pressurization squeeze the fuel in to a partially-drained wing tank. The pump is to transfer fuel in the event of cabin de-pressurization. Some of the issues I'm concerned about are: Adequate transfer rate. Ideally it would be greater than the use rate to reduce fuel management planning. All the plumbing is AN6 except for the tank inlet fitting and pump adapter fittings, which are AN6 to 1/8 NPT. I would have preferred 1/4 NPT. Pressurizing the wing tank. The tanks have the standard under-wing NACA vents without check valves. Changes in fuel pressure if the tank vents too slowly and therefore creates additional fuel pressure. I'm not sure how much change in head pressure the metering system can tolerate without affecting how the engine runs. I've removed the vent check valves--thank you Colyn! If anyone has experience or suggestions, I'm all ears. Thanks, Dave Saylor AirCrafters 140 Aviation Way Watsonville, CA 95076 831-722-9141 Shop 831-750-0284 Cell -- For archives and unsub = http://mail.lancaironline.net:81/lists/lml/List.html ----- No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1388 / Virus Database: 1516/3751 - Release Date: 07/08/11