Return-Path: Received: from relay03.roc.ny.frontiernet.net ([66.133.131.36] verified) by logan.com (CommuniGate Pro SMTP 4.1.3) with ESMTP id 2576066 for flyrotary@lancaironline.net; Thu, 11 Sep 2003 12:08:08 -0400 Received: (qmail 15294 invoked from network); 11 Sep 2003 16:08:08 -0000 Received: from unknown (HELO frontiernet.net) ([65.73.33.245]) (envelope-sender ) by relay03.roc.ny.frontiernet.net (FrontierMTA 2.3.6) with SMTP for ; 11 Sep 2003 16:08:08 -0000 Message-ID: <3F609045.6902BE39@frontiernet.net> Date: Thu, 11 Sep 2003 11:09:57 -0400 From: Jim Sower X-Mailer: Mozilla 4.77 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Oooopps .... References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit <... against calibrating anything in inches....> Of course I meant psi .... :o( Jim S. Jim Sower wrote: > Rino, > I'm not Tracy or Ed, but I'd advise against calibrating anything in inches. > I would display MAP since that's what the engine sees. The engine doesn't > know or care what caused the pressure (low altitude or high boost). Tracy > can speak to this better than me, but I'm certain his fuel control measures > MAP and most likely in inches Hg. That has been the aviation standard since > boost got invented in the '30's. > Eliminates a lot of confusion .... Jim S. > > Rino wrote: > > > I have a question for Tracy and/or Ed. on pressure gauge calibration. > > I am confused when it comes to calibrating the instruments > > I have the Motorola MPX 4250 pressure sensors for my intake manifold and > > turbo pressures. > > I want to calibrate the gauges in inches. > > > > The Question: Do I start at sea level at (29.92") or at Zero > > I think that the confusion comes from the automotive vacuum gauges that > > start at zero at sea level pressure and get 30" at full vacuum. > > > > Thanks > > > > Rino > > Getting closer to first flight > > > > >> Homepage: http://www.flyrotary.com/ > > >> Archive: http://lancaironline.net/lists/flyrotary/List.html > > -- > Jim Sower > Crossville, TN; Chapter 5 > Long-EZ N83RT, Velocity N4095T > > >> Homepage: http://www.flyrotary.com/ > >> Archive: http://lancaironline.net/lists/flyrotary/List.html -- Jim Sower Crossville, TN; Chapter 5 Long-EZ N83RT, Velocity N4095T