X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost05.isp.att.net ([207.115.11.55] verified) by logan.com (CommuniGate Pro SMTP 5.3.2) with ESMTP id 4118112 for flyrotary@lancaironline.net; Tue, 09 Feb 2010 15:20:45 -0500 Received-SPF: none receiver=logan.com; client-ip=207.115.11.55; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-230-68-204.mco.bellsouth.net[74.230.68.204]) by isp.att.net (frfwmhc05) with SMTP id <20100209202006H05008n0iqe>; Tue, 9 Feb 2010 20:20:07 +0000 X-Originating-IP: [74.230.68.204] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: rpm vs Power was : Throttle limits was Re: N.A. Renesis to turbo Date: Tue, 9 Feb 2010 15:20:07 -0500 Message-ID: <2C824D0F43154ACA959A2D5FF95E83A9@Desktop> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000C_01CAA99B.5CF75AE0" X-Mailer: Microsoft Office Outlook 11 Thread-Index: AcqptKTxq1dluouWRQGve+RuAKmn2AAEFhEA X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.18049 This is a multi-part message in MIME format. ------=_NextPart_000_000C_01CAA99B.5CF75AE0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Ok, so velocity cubed. what is "C"? Nope! Not simple enough for some of us! :>) Bill B _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of MONTY ROBERTS Sent: Tuesday, February 09, 2010 1:20 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: rpm vs Power was : Throttle limits was Re: N.A. Renesis to turbo Hp = C*V^3 Is that simple enough? ;-) Monty ----- Original Message ----- From: Al Gietzen To: Rotary motors in aircraft Sent: Tuesday, February 09, 2010 12:10 PM Subject: [FlyRotary] Re: rpm vs Power was : Throttle limits was Re: N.A. Renesis to turbo Ed wrote: The new set up gave a noticeable benefit in take off performance (and I do mean noticeable). However, the top end was relatively unaffected - although I did measure an approx 4 mph increase in top aircraft speed. OK; Ed - given your expertise on technical explanations, I'd like your take on why your increased hp resulting from the increased RPM is not giving you higher top end speed. Is it exhaust back pressure or less than optimum prop, or other? Al _____ No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.435 / Virus Database: 271.1.1/2677 - Release Date: 02/09/10 07:35:00 ------=_NextPart_000_000C_01CAA99B.5CF75AE0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Ok, so velocity cubed… what is = “C”?

 

Nope!  Not simple enough for some of us!  = :>) 

 

Bill B

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of MONTY ROBERTS
Sent: Tuesday, February = 09, 2010 1:20 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = rpm vs Power was : Throttle limits was Re: N.A. Renesis to = turbo

Hp =3D C*V^3

 

Is that simple enough? = ;-)

 

Monty

----- Original Message ----- =

From: Al = Gietzen

Sent: = Tuesday, February 09, 2010 12:10 PM

Subject: = [FlyRotary] Re: rpm vs Power was : Throttle limits was Re: N.A. Renesis to = turbo

 

Ed = wrote:

The new set up gave a noticeable benefit in take off performance (and I = do

mean noticeable).  However, the top end was relatively unaffected - = although

I did measure an approx 4 mph increase in top aircraft = speed.

 

OK; Ed – = given your expertise on technical explanations, I’d like your take on = why your increased hp resulting from the increased RPM is not giving you higher = top end speed.  Is it exhaust back pressure or less than optimum prop, or = other?

 

Al


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Checked by AVG - www.avg.com
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