X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from relay02.roc.ny.frontiernet.net ([66.133.182.165] verified) by logan.com (CommuniGate Pro SMTP 4.3.2) with ESMTP id 968530 for flyrotary@lancaironline.net; Tue, 31 May 2005 00:13:04 -0400 Received-SPF: pass receiver=logan.com; client-ip=66.133.182.165; envelope-from=canarder@frontiernet.net Received: from filter04.roc.ny.frontiernet.net (filter04.roc.ny.frontiernet.net [66.133.183.71]) by relay02.roc.ny.frontiernet.net (Postfix) with ESMTP id 040C93701A9 for ; Tue, 31 May 2005 04:12:19 +0000 (UTC) Received: from relay02.roc.ny.frontiernet.net ([66.133.182.165]) by filter04.roc.ny.frontiernet.net (filter04.roc.ny.frontiernet.net [66.133.183.71]) (amavisd-new, port 10024) with LMTP id 08018-09-49 for ; Tue, 31 May 2005 04:12:18 +0000 (UTC) Received: from [127.0.0.1] (67-137-69-152.dsl2.cok.tn.frontiernet.net [67.137.69.152]) by relay02.roc.ny.frontiernet.net (Postfix) with ESMTP id 876223700EB for ; Tue, 31 May 2005 04:12:18 +0000 (UTC) Message-ID: <429BE419.2000602@frontiernet.net> Date: Mon, 30 May 2005 23:12:09 -0500 From: Jim Sower User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040514 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: will EFI pumps pump air References: In-Reply-To: Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit X-Antivirus: avast! (VPS 0522-0, 05/30/2005), Outbound message X-Antivirus-Status: Clean X-Virus-Scanned: by amavisd-new-20040701 (2.0) at filter04.roc.ny.frontiernet.net Yes I do think Paul's tank was too high. My sump is standard Velocity 173 (5-gal, mounted ON the fuselage bottom just forward of the MLG bow. The fuel level in my sump is just a few in below the bottom of the strake, but the bottom of the tank is over a foot lower. I really think my [assymmetric transfer] problems could be solved by using 1/2" lines from the strake to the sump v. 3/8". I like sumps when they work - they give you usable fuel out of all that wasted space in the belly of the airplane - but mine doesn't.
Guess I'll just have to put in those big lines ... Jim S.

Perry Mick wrote:

Jim,
Thanks for that explanation. Did you see the photo of Paul's sump tank? Don't you think it was mounted too high? I bet yours is lower.

Jim S. wrote:

I don't have a Rutan type selector valve. I have strakes gravity feeding the 5-gal sump through lines about a foot long. Assymmetric transfer was such a problem that I installed electric
valves to DE-select (close off flow from) the tank that was transferring too much and let the other catch up.