Return-Path: <13brv3@bellsouth.net> Received: from imf24aec.mail.bellsouth.net ([205.152.59.72] verified) by logan.com (CommuniGate Pro SMTP 4.2b4) with ESMTP id 123528 for flyrotary@lancaironline.net; Fri, 04 Jun 2004 08:44:12 -0400 Received: from rad ([65.6.194.9]) by imf24aec.mail.bellsouth.net (InterMail vM.5.01.06.08 201-253-122-130-108-20031117) with ESMTP id <20040604124340.FFZJ6744.imf24aec.mail.bellsouth.net@rad> for ; Fri, 4 Jun 2004 08:43:40 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] 4th Flight - temps better, but not great Date: Fri, 4 Jun 2004 07:41:39 -0500 Message-ID: <003a01c44a31$47eb1c60$6001a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_003B_01C44A07.5F151460" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_003B_01C44A07.5F151460 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable What kind of RPM's should I see in a climb ? I know that with a = standard Cessna or piper you usually see about 2100-2200, which times 2.17 would = be about 4600-4800. =20 The key to power with a rotary engine is rpm. As with any fixed pitch = prop, you'll have to strike a compromise for the pitch setting, that gives you good climb, and cruise, and the turbo will add another variable. Until = you get to do some high speed testing, you won't really know what your top = rpm is, so everything's just a guess for now. I would personally like to = see climb rpm in the 5500 range for a 2.17 gear drive. =20 =20 Rusty (I mean I would "personally" REALLY like to see 5500 ) ------=_NextPart_000_003B_01C44A07.5F151460 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

What kind  of RPM's should I see in a climb ? I = know that=20 with a standard Cessna or piper you usually see about 2100-2200, which = times=20 2.17 would be about 4600-4800. 

The key = to power with a=20 rotary engine is rpm.  As with any fixed pitch prop, you'll have to = strike=20 a compromise for the pitch setting, that gives you good climb, and = cruise, and=20 the turbo will add another variable.  Until you get to do some high = speed=20 testing, you won't really know what your top rpm is, so everything's = just a=20 guess for now.  I would personally like to see climb rpm in the = 5500 range=20 for a 2.17 gear drive. 
 
Rusty (I = mean I would=20 "personally" REALLY like to see 5500 <G>)




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