X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from elasmtp-galgo.atl.sa.earthlink.net ([209.86.89.61] verified) by logan.com (CommuniGate Pro SMTP 5.1.2) with ESMTP id 1546644 for flyrotary@lancaironline.net; Wed, 08 Nov 2006 23:00:37 -0500 Received-SPF: none receiver=logan.com; client-ip=209.86.89.61; envelope-from=jerryhey@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=ZP5pfYfrtg4XBEXga4D4z3QwpxKzcjnH2cG2+51WO2fL4l7caYoahp3GqgEaC2Ec; 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-galgo.atl.sa.earthlink.net with asmtp (Exim 4.34) id 1Gi15O-0005Ji-JQ for flyrotary@lancaironline.net; Wed, 08 Nov 2006 23:00:18 -0500 Mime-Version: 1.0 (Apple Message framework v752.2) In-Reply-To: References: Content-Type: multipart/alternative; boundary=Apple-Mail-1-54007853 Message-Id: <30F21C7F-31E8-41F2-AAF4-9B204652BC68@earthlink.net> From: Jerry Hey Subject: Re: [FlyRotary] P Porting template? Date: Wed, 8 Nov 2006 23:00:01 -0500 To: "Rotary motors in aircraft" X-Mailer: Apple Mail (2.752.2) X-ELNK-Trace: 8104856d7830ec6b1aa676d7e74259b7b3291a7d08dfec79c92b03aa06bc371a05fe7d04172e430a350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 71.50.198.0 --Apple-Mail-1-54007853 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed 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-1-54007853 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=ISO-8859-1 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-1-54007853--