X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mx06.syd.iprimus.net.au ([210.50.76.235] verified) by logan.com (CommuniGate Pro SMTP 5.1.2) with ESMTP id 1547696 for flyrotary@lancaironline.net; Thu, 09 Nov 2006 07:28:46 -0500 Received-SPF: pass receiver=logan.com; client-ip=210.50.76.235; envelope-from=daval@iprimus.com.au Received: from 133.017.dsl.pth.iprimus.net.au (HELO [192.168.1.8]) ([211.26.110.133]) by mx06.syd.iprimus.net.au with ESMTP; 09 Nov 2006 23:28:17 +1100 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AgAAAKusUkXTGm6F/2dsb2JhbAAN X-IronPort-AV: i="4.09,405,1157292000"; d="scan'208"; a="11791129:sNHT33498717" Mime-Version: 1.0 (Apple Message framework v624) In-Reply-To: References: Content-Type: multipart/alternative; boundary=Apple-Mail-3-84501008 Message-Id: From: david mccandless Subject: Re: [FlyRotary] Re: P Porting template? Date: Thu, 9 Nov 2006 20:28:14 +0800 To: "Rotary motors in aircraft" X-Mailer: Apple Mail (2.624) --Apple-Mail-3-84501008 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=ISO-8859-1; format=flowed Hi Hans, Doug , Ed, anyone else, looking at the Mazda dyno graphs, All RX8 engines are side port, the 4 port makes 200+ at 7000 right=20 out of the box, so you can easily get 170-180 at 6000 rpm. BR, Dave McC On 9, Nov , at 6:10 PM, Hans Conser wrote: > Well, telling you upfront that I am not flying a 13B; I disagree with=20= > Ed, I don't think you will see that sort of power with a side port 13B=20= > unless you are over 7500 RPM. At leaast this is what I think based on=20= > some dyno runs with various side port engines I have built. P-Port is=20= > the way to go. > > Hans > > > On Nov 8, 2006, at 9:03 PM, Ed Anderson wrote: > >> Hi Doug, >> =A0 >> If you want to develop between 160 and 170 HP from a 13B, I for one=20= >> would not consider a P port.=A0 The reason, is that the stock 13B = will=20 >> easily give you that kind of power with less effort and cost.=A0 If = you=20 >> wanted HP on the order of 200 + then a P port might be one approach=20= >> to consider.=A0 >> =A0 >> Now if you simply want to experiment with a P port, then got to it.=A0=20= >> But, it is simply not needed for the power levels you are looking=20 >> for. >> =A0 >> The only person I am aware of who may have the information you want=20= >> is Jerry Hey - he use to be on the list, but I have not seeing=20 >> anything from him recently.=A0=A0=A0 This is the last e mail address = I have=20 >> for Jerry Hey >> E-mail Address(es): >> =A0 jerryhey@earthlink.net >> =A0 >> you might send him a message. >> =A0 >> =A0 >> Best Regards >> =A0 >> Ed >>> ----- Original Message ----- >>> From: DLOMHEIM@aol.com >>> To: Rotary motors in aircraft >>> Sent: Wednesday, November 08, 2006 10:45 PM >>> Subject: [FlyRotary] P Porting template? >>> >>> >>> I have a friend in Denver who is willing to set up his=A0milling=20 >>> machine to mill out some P-Ports on a couple of my=A0old rotor=20 >>> housings over Thanksgiving break.=A0 My question is if any of you = know=20 >>> where I can=A0get a copy of a template for use with 1.5" diameter=20 >>> intake pipes.=A0 I would think there would be something in = the=A0public=20 >>> domain by now (but I could be wrong).=A0 The potential benefits of a=20= >>> P-Port make it pretty attractive to at least experiment with at some=20= >>> point and I will be happy to develop between 160 and 170 hp=A0in my = 9A=20 >>> so I think that should be doable... >>> =A0 >>> Doug >>> RV-9A, 13B installation=A0= --Apple-Mail-3-84501008 Content-Transfer-Encoding: quoted-printable Content-Type: text/enriched; charset=ISO-8859-1 Hi Hans, Doug , Ed, anyone else, looking at the Mazda dyno graphs, All RX8 engines are side port, the 4 port makes 200+ at 7000 right out of the box, so you can easily get 170-180 at 6000 rpm.=20 BR, Dave McC On 9, Nov , at 6:10 PM, Hans Conser wrote: Well, telling you upfront that I am not flying a 13B; I disagree with Ed, I don't think you will see that sort of power with a side port 13B unless you are over 7500 RPM. At leaast this is what I think based on some dyno runs with various side port engines I have built. P-Port is the way to go. Hans =20 On Nov 8, 2006, at 9:03 PM, Ed Anderson wrote: ArialHi Doug, = Arial=A0 ArialIf you want to develop between 160 and 170 HP from a 13B, I for one would not consider a P port.=A0 The reason, is that the stock 13B will easily give you that kind of power with less effort and cost.=A0 If you wanted HP on the order of 200 + then a P port might be one approach to consider.=A0 = Arial=A0 ArialNow if you simply want to experiment with a P port, then got to it.=A0 But, it is simply not needed for the power levels you are looking for. = Arial=A0 ArialThe only person I am aware of who may have the information you want is Jerry Hey - he use to be on the list, but I have not seeing anything from him recently.=A0=A0=A0 This is the = last e mail address I have for Jerry Hey ArialE-mail Address(es): Arial=A0 = 0000,0000,EEEDjerryhey@earthlink.net = Arial=A0 Arialyou might send him a = message. = Arial=A0 = Arial=A0 ArialBest Regards = Arial=A0 ArialEd Arial----- Original Message ----- = ArialFrom:Arial = 0000,0000,EEEDDLOMHEIM@= aol.com = = ArialTo:Arial 0000,0000,EEEDRotary motors in aircraft = = ArialSent:Arial Wednesday, November 08, 2006 10:45 PM = ArialSubject:Arial [FlyRotary] P Porting template? ArialI have a friend in Denver who is willing to set up his=A0milling machine to mill out some P-Ports on a couple of my=A0old rotor housings over Thanksgiving break.=A0 My = question is if any of you know where I can=A0get a copy of a template for use with 1.5" diameter intake pipes.=A0 I would think there would be something in the=A0public domain by now (but I could be wrong).=A0 The potential benefits of a P-Port make it pretty attractive to at least experiment with at some point and I will be happy to develop between 160 and 170 hp=A0in my 9A so I think that should be = doable... Arial=A0 ArialDoug ArialRV-9A, 13B = installation=A0= --Apple-Mail-3-84501008--