Return-Path: <13brv3@bellsouth.net> Received: from imf23aec.mail.bellsouth.net ([205.152.59.71] verified) by logan.com (CommuniGate Pro SMTP 4.1.3) with ESMTP id 2568687 for flyrotary@lancaironline.net; Fri, 05 Sep 2003 09:21:34 -0400 Received: from rad ([68.212.14.21]) by imf23aec.mail.bellsouth.net (InterMail vM.5.01.05.27 201-253-122-126-127-20021220) with ESMTP id <20030905132132.BIVC1849.imf23aec.mail.bellsouth.net@rad> for ; Fri, 5 Sep 2003 09:21:32 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Rusty's Power seems about right Date: Fri, 5 Sep 2003 08:21:33 -0500 Message-ID: <010d01c373b0$a0670410$0201a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_010E_01C37386.B790FC10" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_010E_01C37386.B790FC10 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I have been thinking about your apparently less power than you expected = for a given manifold pressure (ie. 30 in Hg) and thought of a few points you = may not have considered. You were disappointed that power seemed to be = anemic at 30 in. compared to what you would expect an n/a engine to produce at = WOT. However, with the turbo, several things change. =20 =20 =20 You're points are all well taken, and I can't wait to hook that EM-2 up = to see what my intake temp is, but the real mystery got solved when I = noticed that my climb rpm was only 4700 with 3psi of boost. It was probably = only 4300 or so with 30 MAP, and no rotary makes significant power at that = rpm. All along, I've pretty much assumed that I'd have to make 31 inches or = so (just guessing) to be even with a good NA setup. =20 =20 Rusty =20 ------=_NextPart_000_010E_01C37386.B790FC10 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
I have been = thinking=20 about your apparently less power than you expected for a given manifold = pressure=20 (ie. 30 in Hg) and thought of a few points you may not have=20 considered.   You were disappointed that power seemed to be = anemic at=20 30 in. compared to what you would expect an n/a engine to produce at = WOT. =20 However, with the turbo, several things change.  =

 

 

You're points = are all well=20 taken, and I can't wait to hook that EM-2 up to see what my intake = temp is,=20 but the real mystery got solved when I noticed that my climb rpm was=20 only 4700 with 3psi of boost.  It was probably only 4300 = or so=20 with 30 MAP, and no rotary makes significant power at that = rpm.  All=20 along, I've pretty much assumed that I'd have to make 31 inches or so = (just=20 guessing) to be even with a good NA=20 setup.  

 

Rusty   

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