X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from m15.nyc.untd.com ([64.136.22.78] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with SMTP id 949156 for flyrotary@lancaironline.net; Wed, 18 May 2005 15:52:53 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.136.22.78; envelope-from=jbker@juno.com Received: from m15.nyc.untd.com (localhost [127.0.0.1]) by m15.nyc.untd.com with SMTP id AABBJZHHDAWTZC42 for (sender ); Wed, 18 May 2005 12:52:03 -0700 (PDT) X-UNTD-OriginStamp: Y+Mfppm2QyGfnY/dq+iW1d6ulDvib4wH0+ZLylVixiBv73V7W9g7vQ== Received: (from jbker@juno.com) by m15.nyc.untd.com (jqueuemail) id KTBCTW79; Wed, 18 May 2005 12:51:26 PDT To: flyrotary@lancaironline.net Date: Wed, 18 May 2005 15:48:21 -0400 Subject: Re: [FlyRotary] More MAP measurement questions Message-ID: <20050518.155010.304.2.JBKER@juno.com> X-Mailer: Juno 5.0.33 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary=--__JNP_000_4bfe.05ed.31e5 X-Juno-Line-Breaks: 8-6,11-15,25-26,27-32767 From: WALTER B KERR X-ContentStamp: 9:4:4016913866 X-UNTD-Peer-Info: 127.0.0.1|localhost|m15.nyc.untd.com|jbker@juno.com This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ----__JNP_000_4bfe.05ed.31e5 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit I could babble on about this, but my point is to ask where others are measuring their MAP (turbo folks need not apply). You'll also have to give a general description of your intake layout. I already know that Ed and Tracy are using the "typical" situation. Is anyone measuring MAP in the runner to the engine? ------------------------------------ Hi Rusty, Yes , I measure in the runner and do not have a plenum down stream of the T/B. But Tracy and I have had this very discussion, my MAP attempts to measure the stagnation or total pressure. My comment to Tracy is that if he has a plenum after the T/B , that he is measuring the stagnation pressure. My tube sticking into the runner has a 45 degree slant cut on it and the opening faces toward the average flow. Tracy says that the runner sees all kinds of pressures as the rotor inlet opens and closes. I agree with that, but think you want the average stagnation pressure which is what his plenum measures. I added a lawnmower fuel filter in the MAP line to attempt to dampen any pulses out. Bernie, no flying today ----__JNP_000_4bfe.05ed.31e5 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: quoted-printable

I could babble on = about=20 this, but my point is to ask where others are measuring their MAP (turbo = folks=20 need not apply). You'll also have to give a general description of = your=20 intake layout. I already know that Ed and Tracy are using the=20 "typical" situation. Is anyone measuring MAP in the runner to the=20 engine?

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&= nbsp;

Hi=20 Rusty,

&= nbsp;

Yes , I measure in= the=20 runner and do not have a plenum down stream of the T/B. But Tracy and I = have had=20 this very discussion, my MAP attempts to measure the stagnation or total=20 pressure. My comment to Tracy is that if he has a plenum after the T/B , = that he=20 is measuring the stagnation pressure. My tube sticking into the runner has = a 45=20 degree slant cut on it and the opening faces toward the average flow. Tracy= says=20 that the runner sees all kinds of pressures as the rotor inlet opens and = closes.=20 I agree with that, but think you want the average stagnation pressure which= is=20 what his plenum measures. I added a lawnmower fuel filter in the MAP line = to=20 attempt to dampen any pulses out.

&= nbsp;

Bernie, no flying= =20 today

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