X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 10 Jul 2012 07:51:13 -0400 Message-ID: X-Original-Return-Path: Received: from mail-gg0-f180.google.com ([209.85.161.180] verified) by logan.com (CommuniGate Pro SMTP 5.4.6) with ESMTPS id 5644766 for lml@lancaironline.net; Mon, 09 Jul 2012 23:14:34 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.161.180; envelope-from=billhogarty@gmail.com Received: by ggnf1 with SMTP id f1so10170286ggn.25 for ; Mon, 09 Jul 2012 20:13:59 -0700 (PDT) MIME-Version: 1.0 Received: by 10.50.140.70 with SMTP id re6mr10299986igb.23.1341890038785; Mon, 09 Jul 2012 20:13:58 -0700 (PDT) Received: by 10.64.132.1 with HTTP; Mon, 9 Jul 2012 20:13:58 -0700 (PDT) In-Reply-To: References: X-Original-Date: Mon, 9 Jul 2012 20:13:58 -0700 X-Original-Message-ID: Subject: Re: [LML] Re: F/F Transducer From: "William A. Hogarty" X-Original-To: Lancair Mailing List Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi Bob: Thanks for the input. Just goes to prove that there is always a lot to l= earn. Regards, Bill H On Mon, Jul 9, 2012 at 4:47 PM, Robert R Pastusek wrot= e: > Bill, > I missed the earlier part of this thread, but without knowing what you're= looking for, here's something you should consider. Fuel flow transducers = are designed to work within a flow range. One that will support a TSIO-550 = at WOT needs to efficiently pass and record at least 45 GPH...quite a strea= m of fuel. The fuel flow on this engine from 1700 RPM on down is in the 4 G= PH or less... less than 10% of the rated flow capacity. You should not expe= ct it to measure reliable/accurate flow rates at this very low volume of fu= el. Kinda like trying to weigh a feather pillow with a truck scale... > > My two cents... > > Bob Pastusek > -------------- > > My thanks to all who helped on this on and special thanks to Dico Reijers= for sending a F/F transducer for comparison. > > I ran each transducer at RPM varying from 1700 down to idle and recorded = fuel flows. > > The comparison transducer ran roughly 2.4 % higher at all readings which = leads me to believe that the K factor varied but the reading did compare. > > If anyone with a TSIO 550E can give me their fuel flows varying from > 1700 on down, I would appreciate it > > Regards, Bill Hogarty > > P.S. to Dico.. I'll be sending your transducer back to you this week. > I left connectors attached to the leads but you can > cut them off if you prefer. Thanks again Bill H. > > -- > For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.ht= ml > > > > -- > For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.ht= ml