Return-Path: Received: from pop3.olsusa.com ([63.150.212.2] verified) by logan.com (CommuniGate Pro SMTP 3.5b8) with ESMTP id 953518 for rob@logan.com; Mon, 12 Nov 2001 20:46:52 -0500 Received: from hotmail.com ([216.33.237.114]) by pop3.olsusa.com (Post.Office MTA v3.5.3 release 223 ID# 0-71866U8000L800S0V35) with ESMTP id com for ; Mon, 12 Nov 2001 16:28:55 -0500 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Mon, 12 Nov 2001 13:41:47 -0800 Received: from 163.206.104.104 by lw7fd.law7.hotmail.msn.com with HTTP; Mon, 12 Nov 2001 21:41:47 GMT From: "Ed Sikora" To: lancair.list@olsusa.com Bcc: Subject: LC235 Facet pumps in series or parallel?? Date: Mon, 12 Nov 2001 21:41:47 +0000 Mime-Version: 1.0 Content-Type: text/plain; format=flowed Message-ID: X-Mailing-List: lancair.list@olsusa.com Reply-To: lancair.list@olsusa.com <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> Was reviewing the LML posts and saw several refrences to plumbing the facet fuel pumps. Seems like it was about 50/50 for putting the pumps between the wing tank selector valve outlet (left/off/right) and the header tank in series vs parallel. I'm planning on using the Pillar Point Fuel Controller (hoping they can correct the false wet/dry indications with some averaging or summing of the discrete indications) with only one pump "ON" at a time. Is it better to plumb these two pumps in series (does the "off" pump flow through enough) or parallel (does the "off" pump check the reverse flow)? Are there any redundancy issues that makes one installation safer over the other? I appreciate any comments. -Ed Sikora >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML website: http://members.olsusa.com/mkaye/maillist.html LML Builders' Bookstore: http://www.buildersbooks.com/lancair Please remember that purchases from the Builders' Bookstore assist with the management of the LML. Please send your photos and drawings to marvkaye@olsusa.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>