X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [216.52.245.18] (HELO ispwestemail2.mdeinc.com) by logan.com (CommuniGate Pro SMTP 4.3.5) with ESMTP id 1027978 for flyrotary@lancaironline.net; Thu, 30 Jun 2005 20:28:38 -0400 Received-SPF: none receiver=logan.com; client-ip=216.52.245.18; envelope-from=wschertz@ispwest.com Received: from 7n7z201 (unverified [63.13.196.73]) by ispwestemail2.mdeinc.com (Vircom SMTPRS 4.1.361.20) with SMTP id for ; Thu, 30 Jun 2005 17:27:48 -0700 Message-ID: <016701c57dd3$ae159a70$0400000a@7n7z201> From: "William" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: P Ports working on dyno Date: Thu, 30 Jun 2005 19:27:35 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0164_01C57DA9.C4DDC360" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0164_01C57DA9.C4DDC360 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable As I recall the old email's on the subject, I think the center tube was = in place, but they removed the rear tube because of test stand = interference. That destroyed the venturi effect (or at least minimized = it) . someone else then took the muffler (Jerry Bass?) and adapted it to = his engine, he found that at slow speed taxi, that some exhaust came out = of the front of the tube. (as I recall) Bill Schertz KIS Cruiser # 4045 ----- Original Message -----=20 From: wrjjrs@aol.com=20 To: Rotary motors in aircraft=20 Sent: Thursday, June 30, 2005 2:52 PM Subject: [FlyRotary] Re: P Ports working on dyno Bill, I did get the jpeg and I really like the concept. I never saw = the original VAM. Ed told me about how it was chopped up to fit Tracy's = test engine. I asked what was inside it and he said "nothing." = Originally I can recall some discussion on the other list about putting = a valve on the inlet to prevent exhaust gas from going the wrong way = when the airplane was not moving. That probably came from a = misunderstanding of your concept. I really like the version you posted = today. Jerry=20 Jerry, It is interesting how you find out about things after the fact. (ED = if your monitoring please let me know if our info is correct) The entire = idea of the VAM concept was to create a venturi to draw the cool air in! = The reason for the donut fron section was it doubled as an end cap and = an inlet bellmouth for the tube. Without the inside tube I am supprised = the thing would draw air at all! I'll send you a close up drawing I sent = PL's list off line. When you get your engine running it could be worth a = re-try. I am supprised Ed missed the center tube, (if he did), he is a = sharp guy and doesn't miss much. The other possibility is that he made = it removable and they took it out prior to the test. Bill Jepson ------=_NextPart_000_0164_01C57DA9.C4DDC360 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
As I recall the old email's on the = subject, I think=20 the center tube was in place, but they removed the rear tube because of = test=20 stand interference. That destroyed the venturi effect (or at least = minimized it)=20 . someone else then took the muffler (Jerry Bass?) and adapted it to his = engine,=20 he found that at slow speed taxi, that some exhaust came out of the = front of the=20 tube. (as I recall)
Bill Schertz
KIS Cruiser # 4045
----- Original Message -----
From:=20 wrjjrs@aol.com
Sent: Thursday, June 30, 2005 = 2:52=20 PM
Subject: [FlyRotary] Re: P = Ports working=20 on dyno

Bill, I did get the jpeg and I really like the concept. I never = saw the=20 original VAM. Ed told me about how it was chopped up to fit Tracy's = test=20 engine. I asked what was inside it and he said "nothing."   = Originally I=20 can recall some discussion on the other list about putting a valve on = the=20 inlet to prevent exhaust gas from going the wrong way when the = airplane was=20 not moving. That probably came from a misunderstanding of your = concept. I=20 really like the version you posted today. Jerry 
Jerry,
 It is interesting how you find out about things after the = fact. (ED=20 if your monitoring please let me know if our info is correct) The = entire idea=20 of the VAM concept was to create a venturi to draw the cool air in! = The reason=20 for the donut fron section was it doubled as an end cap and an inlet = bellmouth=20 for the tube. Without the inside tube I am supprised the thing would = draw air=20 at all! I'll send you a close up drawing I sent PL's list off line. = When you=20 get your engine running it could be worth a re-try. I am supprised Ed = missed=20 the center tube, (if he did), he is a sharp guy and doesn't miss much. = The=20 other possibility is that he made it removable and they took it out = prior to=20 the test.
Bill Jepson
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