X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf18aec.mail.bellsouth.net ([205.152.59.66] verified) by logan.com (CommuniGate Pro SMTP 5.1.10) with ESMTP id 2198647 for flyrotary@lancaironline.net; Wed, 25 Jul 2007 13:12:07 -0400 Received-SPF: none receiver=logan.com; client-ip=205.152.59.66; envelope-from=rusty@radrotary.com Received: from ibm61aec.bellsouth.net ([65.6.194.9]) by imf18aec.mail.bellsouth.net with ESMTP id <20070725171128.PRZV29548.imf18aec.mail.bellsouth.net@ibm61aec.bellsouth.net> for ; Wed, 25 Jul 2007 13:11:28 -0400 Received: from rad ([65.6.194.9]) by ibm61aec.bellsouth.net with ESMTP id <20070725171127.MQEJ15393.ibm61aec.bellsouth.net@rad> for ; Wed, 25 Jul 2007 13:11:27 -0400 From: "Russell Duffy" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Exhaust scavenging effect? Date: Wed, 25 Jul 2007 12:11:28 -0500 Message-ID: <03f001c7cede$d6bc1360$a301a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_03F1_01C7CEB4.EDE60B60" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6822 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3138 Importance: Normal Thread-Index: AcfO3Ts4Xs/J3s7CRaWDHu0U5gDWAgAAQ/6A In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_03F1_01C7CEB4.EDE60B60 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Each rotor should be able to scavenge itself, shouldn't it? Maybe if the pipe is long enough??? =20 The effect I'm talking about requires the flow from other chambers = (pistons, rotors) to help pull the last of the exhaust out of the other chambers. I've read more about this in past V8 days, where there's a lot more = pumping activity going on. Not sure if the 2-rotor really gets any benefit from this or not. Rusty =20 ------=_NextPart_000_03F1_01C7CEB4.EDE60B60 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message

Each rotor should be able to scavenge itself, = shouldn't=20 it?

Maybe if = the pipe is long=20 enough??? 

The effect = I'm talking=20 about requires the flow from other chambers (pistons, rotors) to help = pull the=20 last of the exhaust out of the other chambers.  I've read more = about this=20 in past V8 days, where there's a lot more pumping activity going = on.  Not=20 sure if the 2-rotor really gets any benefit from this or = not.

Rusty  

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