X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from elasmtp-mealy.atl.sa.earthlink.net ([209.86.89.69] verified) by logan.com (CommuniGate Pro SMTP 5.1.2) with ESMTP id 1547818 for flyrotary@lancaironline.net; Thu, 09 Nov 2006 08:21:44 -0500 Received-SPF: none receiver=logan.com; client-ip=209.86.89.69; envelope-from=jerryhey@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=CDw4V7CqmvrFAmKTmhUcgNaCLQhROKJjNCz8GluR+tQX2m5ncqqpP90OLhcpa6lA; h=Received:Mime-Version:In-Reply-To:References:Content-Type:Message-Id:From:Subject:Date:To:X-Mailer:X-ELNK-Trace:X-Originating-IP; Received: from [71.50.198.0] (helo=[192.168.0.101]) by elasmtp-mealy.atl.sa.earthlink.net with asmtp (Exim 4.34) id 1Gi9qO-00069f-A9 for flyrotary@lancaironline.net; Thu, 09 Nov 2006 08:21:24 -0500 Mime-Version: 1.0 (Apple Message framework v752.2) In-Reply-To: References: Content-Type: multipart/alternative; boundary=Apple-Mail-2-87643865 Message-Id: From: Jerry Hey Subject: Re: [FlyRotary] Re: P Porting template? Date: Thu, 9 Nov 2006 08:20:37 -0500 To: "Rotary motors in aircraft" X-Mailer: Apple Mail (2.752.2) X-ELNK-Trace: 8104856d7830ec6b1aa676d7e74259b7b3291a7d08dfec79bf74201a154ace8eae134724cc1a0c1c350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 71.50.198.0 --Apple-Mail-2-87643865 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Doug, for a 1.5 i.d. intake you will need to bore to 1.625. The insert should be an interference fit that you can push in/remove by hand. After boring the housing, if you find you insert is too loose, no problem. Just go to the next size larger aluminum tube with a thicker wall and turn it to fit. I like 1.75 o.d. inserts with a 1.625 i.d. hole. Paul Lamar will advise that you go with 2 inch o.d. Either way, you are going to make lots of power. Practice gluing with JB Weld. I do not use it for the real thing but others do. I like Duralco 4525. You can google it to find out more. Jerry On Nov 8, 2006, at 11:00 PM, Jerry Hey wrote: > Doug, you don't need a template. Just bore to what ever diameter > you want between 1.5" and 2". It is a good idea to bore the port > parallel to the horizontal center line of the engine as opposed to > perpendicular to the housing face. For a 1.5 hole, center it 2.5 > inches above the housing's center line. You can use a 1.375 hole > saw to start and then finish with the off set boring head. Have > fun. Jerry > > > On Nov 8, 2006, at 10:45 PM, DLOMHEIM@aol.com wrote: > >> I have a friend in Denver who is willing to set up his milling >> machine to mill out some P-Ports on a couple of my old rotor >> housings over Thanksgiving break. My question is if any of you >> know where I can get a copy of a template for use with 1.5" >> diameter intake pipes. I would think there would be something in >> the public domain by now (but I could be wrong). 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 in my 9A so I think that should be doable... >> >> Doug >> RV-9A, 13B installation > --Apple-Mail-2-87643865 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=ISO-8859-1 Doug,=A0 for a 1.5 i.d. intake = you will need to bore to 1.625.=A0 The=A0 insert=A0 should be an = interference fit that you can push in/remove=A0 by hand.=A0 After boring = the housing, if you find you insert is too loose, no problem.=A0 Just go = to the next size larger aluminum tube with a thicker wall and turn it to = fit. =A0I like 1.75 o.d. inserts with a 1.625 i.d. hole. =A0Paul Lamar = will advise that you go with 2 inch o.d.=A0 Either way,=A0 you are going = to make lots of power.=A0 =A0

Practice gluing with JB Weld. =A0I do = not use it for the real thing but others do. =A0I like Duralco 4525. = =A0You can google it to find out more.=A0 =A0Jerry =A0

On Nov 8, = 2006, at 11:00 PM, Jerry Hey wrote:

Doug,=A0 = you don't need a template.=A0 Just bore to what ever diameter you want = between 1.5" and 2".=A0 It is a good idea to bore the port parallel to = the horizontal center line of the engine as opposed to perpendicular to = the housing face.=A0 For a 1.5 hole, center it 2.5 inches above the = housing's=A0 center line. =A0You can use a 1.375 hole saw to start and = then finish with the off set boring head. =A0 =A0Have fun.=A0 = Jerry=A0=A0

On Nov 8, = 2006, at 10:45 PM, DLOMHEIM@aol.com wrote:

I = 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...

=A0

Doug

RV-9A, 13B = installation=A0

= --Apple-Mail-2-87643865--