X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from sccmmhc91.asp.att.net ([204.127.203.211] verified) by logan.com (CommuniGate Pro SMTP 5.0c5) with ESMTP id 771557 for flyrotary@lancaironline.net; Mon, 17 Oct 2005 20:51:53 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.203.211; envelope-from=btilley@mchsi.com Received: from [192.168.1.100] (12-214-72-178.client.mchsi.com[12.214.72.178]) by sccmmhc91.asp.att.net (sccmmhc91) with SMTP id <20051018005109m9100dva3se>; Tue, 18 Oct 2005 00:51:09 +0000 Mime-Version: 1.0 (Apple Message framework v734) In-Reply-To: References: Content-Type: multipart/alternative; boundary=Apple-Mail-2-965609996 Message-Id: From: Bob Tilley Subject: Re: [FlyRotary] flyrotary Displacement Date: Mon, 17 Oct 2005 20:51:05 -0400 To: "Rotary motors in aircraft" X-Mailer: Apple Mail (2.734) --Apple-Mail-2-965609996 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed You guys are all confusing me!!!! ;-) All that matters is 200 hp to the prop!!! ;-) Let's get back to building and flying:-p Bob On Oct 17, 2005, at 8:06 PM, Monty Roberts wrote: > Well guys here you all go getting tangled up in you analytical undies. > > I keep trying to tell you to stop getting confused about the > hardware and just pretend it does not even exist. > > A fixed amount of air and fuel goes in. > > It is compressed. > > It is ignited. > > It is expanded > > It is exhausted > > > Now the question is for this one packet what is the maximum amount > that can be ingested at atmospheric pressure. > > .65 liters per chamber. > > what constitutes a chamber? > > A rotor face. > > How many are there? > > How long does it take to run all the little packets through one > complete cycle? > > The true thermodynamic eqivalent is a 3.9L 6 cyl motor spining at > 1/3 eshaft speed. > > You may choose a 1.3 L 6 cylinder spining 3 times as fast if you > like and get the same numbers. > > You may also choose a 2.6 L spining 2/3 as fast > > Or you may play any game of two cycle four cycle six cycle etc. > > Or you could just make up some arbitrary way to make the numbers > work out. > > You could also say that 302 cubic inch engine is actually a 604 > cubic inch engine if spun twice as fast and choose to calculate > displacement via the cam drive. > > The point is the only thing that matters when comparing oranges and > oranges is that one little chamber or single cylinder. Not half a > cylinder or 2/3 of cylinder or chamber. > > The working fluid is the key-not the hardware.....I promise. > > > I still maintain that it doesn't make a hill of beans of > difference. The mental exercise beats watching Oprah, however. > > > Monty > > > --Apple-Mail-2-965609996 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=ISO-8859-1 You guys are all confusing = me!!!!=A0 ;-)=A0 All that matters is 200 hp to the prop!!! ;-)=A0 Let's = get back to building and flying:-p

Bob

O= n Oct 17, 2005, at 8:06 PM, Monty Roberts wrote:

Well guys here you all = go getting tangled up in you analytical = undies.
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A fixed amount of air and fuel goes = in.
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eqivalent is a 3.9L 6 = cyl motor spining at 1/3 eshaft speed.
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You may choose a 1.3 L 6 cylinder spining 3 times as = fast if you like and get the same numbers.
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You may also choose a 2.6 L spining 2/3 as = fast
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The working fluid is the key-not the hardware.....I = promise.
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