Return-Path: <13brv3@bellsouth.net> Received: from imf23aec.mail.bellsouth.net ([205.152.59.71] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 591897 for flyrotary@lancaironline.net; Wed, 05 Jan 2005 00:31:22 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.71; envelope-from=13brv3@bellsouth.net Received: from rd ([65.6.194.9]) by imf23aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050105053052.CEZV2378.imf23aec.mail.bellsouth.net@rd> for ; Wed, 5 Jan 2005 00:30:52 -0500 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: RV-3 engine rebuild Date: Tue, 4 Jan 2005 23:30:59 -0600 Message-ID: <000601c4f2e7$bd50e8e0$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0007_01C4F2B5.72B678E0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0007_01C4F2B5.72B678E0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Rusty, you REALLY need more HP. This is your chance to build a = PPort!!!!! Ken Powell=20 =20 But if I decide to PP the engine, then I'll never finish, or at least = that seems to be the trend :-) =20 =20 Seriously, I've talked to at least a couple folks about using PP for the single rotor, and have been talked out of doing it. I'd love to, = because it would be easy, but the argument seems to be that it will give great = power, in a very narrow band of rpms. I've also been told that PP has no advantage below 7500 rpm, where we all run. Specifically, I've been = talking about using the factory PP housings, so it may be that a more = conservatively timed port could be constructed, and would work better. =20 =20 I know PP is one of Lynn's favorite subjects, so maybe he'll chime in = here. I want to believe, really. =20 =20 Cheers, Rusty =20 ------=_NextPart_000_0007_01C4F2B5.72B678E0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
Rusty, you REALLY need more HP.  This is your = chance to=20 build a PPort!!!!!

Ken Powell 
 
But if I=20 decide to PP the engine, then I'll never finish, or at least that seems = to be=20 the trend :-)  
 
Seriously,=20 I've talked to at least a couple folks about using PP for the single = rotor, and=20 have been talked out of doing it.  I'd love to, because it would be = easy,=20 but the argument seems to be that it will give great power, in = a very narrow band of rpms.   I've also been told = that PP=20 has no advantage below 7500 rpm, where we all run.  = Specifically, I've=20 been talking about using the factory PP housings, so it may be that = a=20 more conservatively timed port could be constructed, and would = work=20 better.  
 
I know PP is=20 one of Lynn's favorite subjects, so maybe he'll chime in here.  I = want to=20 believe, really.  
 
Cheers,
Rusty=20    
------=_NextPart_000_0007_01C4F2B5.72B678E0--