Return-Path: Received: from relay03.roc.ny.frontiernet.net ([66.133.182.166] verified) by logan.com (CommuniGate Pro SMTP 4.3c1) with ESMTP id 741413 for flyrotary@lancaironline.net; Wed, 16 Feb 2005 10:42:31 -0500 Received-SPF: pass receiver=logan.com; client-ip=66.133.182.166; envelope-from=canarder@frontiernet.net Received: from filter07.roc.ny.frontiernet.net (filter07.roc.ny.frontiernet.net [66.133.183.74]) by relay03.roc.ny.frontiernet.net (Postfix) with ESMTP id 0C7CE358027 for ; Wed, 16 Feb 2005 15:41:46 +0000 (UTC) Received: from relay03.roc.ny.frontiernet.net ([66.133.182.166]) by filter07.roc.ny.frontiernet.net (filter07.roc.ny.frontiernet.net [66.133.183.74]) (amavisd-new, port 10024) with LMTP id 31387-39-92 for ; Wed, 16 Feb 2005 15:41:45 +0000 (UTC) Received: from [127.0.0.1] (67-137-75-55.dsl2.cok.tn.frontiernet.net [67.137.75.55]) by relay03.roc.ny.frontiernet.net (Postfix) with ESMTP id 69E8935810C for ; Wed, 16 Feb 2005 15:41:44 +0000 (UTC) Message-ID: <421369B2.7070405@frontiernet.net> Date: Wed, 16 Feb 2005 09:41:38 -0600 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: Fuel System Design - Jet Pump References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Antivirus: avast! (VPS 0507-0, 02/15/2005), Outbound message X-Antivirus-Status: Clean X-Virus-Scanned: by amavisd-new-20040701 (2.0) at filter07.roc.ny.frontiernet.net I knew that. I had one that failed. I meant for fuel transfer. What effect would the back pressure from pushing the fuel through the venturi have on the regulator? Has anyone quantified the back pressure from the venturi? Seems like a lot of extra plumbing associated with jet pump that "should" gravity feed stuff back and forth because you can't turn the damned thing off. Where is the point of diminishing return? ... Jim S. William wrote: > "PS Has anyone actually *seen* the two-line-jet-pump and watched it > actually WORK ?? > (the devil made me say that )" > > Probably 90% of shallow well water pumps are 'jet pumps'. > Bill Schertz > KIS Cruiser # 4045 > > >