X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [216.148.227.89] (HELO rwcrmhc12.comcast.net) by logan.com (CommuniGate Pro SMTP 4.3.5) with ESMTP id 1027989 for flyrotary@lancaironline.net; Thu, 30 Jun 2005 20:41:40 -0400 Received-SPF: none receiver=logan.com; client-ip=216.148.227.89; envelope-from=techwelding@comcast.net Received: from dell (pcp08732020pcs.paduca01.ky.comcast.net[69.139.125.92]) by comcast.net (rwcrmhc14) with SMTP id <2005070100405301400mt1cse>; Fri, 1 Jul 2005 00:40:54 +0000 Message-ID: <001001c57dd5$899c38f0$b102a8c0@dell> From: "Ed Klepeis" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Sq Muffler Date: Thu, 30 Jun 2005 19:40:52 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000D_01C57DAB.9FBD9A90" 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_000D_01C57DAB.9FBD9A90 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Dear Fellow Rotary people I emailed jerry I don't know if he got it. but for your own info = yes there was a center tube I welded in place and we couldn't run the = tail pipe on tracy's eng it hit his mounting system that is why I think = it was louder than it sould be not a true test. I have been toying with = the idea of a sq muffler because of the sound breaking down idea. does = any one have any ideas good or bad on this subject. = Regards Ed KLepeis ----- Original Message -----=20 From: William=20 To: Rotary motors in aircraft=20 Sent: Thursday, June 30, 2005 7:27 PM Subject: [FlyRotary] Re: P Ports working on dyno 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_000D_01C57DAB.9FBD9A90 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Dear Fellow Rotary people
      I = emailed jerry I=20 don't know if he got it. but for your own info yes there was a center = tube I=20 welded in place and we couldn't run the tail pipe on tracy's eng it hit = his=20 mounting system that is why I think it was louder than it sould be not a = true=20 test. I have been toying with the idea of a sq muffler because of the = sound=20 breaking down idea. does any one have any ideas good or bad on this=20 subject.
          &nbs= p;            = ;            =             &= nbsp;           &n= bsp;     =20 Regards
          &nbs= p;            = ;            =             &= nbsp;           &n= bsp;=20 Ed KLepeis
----- Original Message -----
From:=20 William=20
Sent: Thursday, June 30, 2005 = 7:27=20 PM
Subject: [FlyRotary] Re: P = Ports working=20 on dyno

As I recall the old email's on the = subject, I=20 think the center tube was in place, but they removed the rear tube = because of=20 test stand interference. That destroyed the venturi effect (or at = least=20 minimized it) . someone else then took the muffler (Jerry Bass?) and = adapted=20 it to his engine, he found that at slow speed taxi, that some exhaust = came out=20 of the front of the tube. (as I recall)
Bill Schertz
KIS Cruiser # 4045
----- Original Message -----
From:=20 wrjjrs@aol.com=20
To: Rotary motors in = aircraft=20
Sent: Thursday, June 30, 2005 = 2:52=20 PM
Subject: [FlyRotary] Re: P = Ports=20 working 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=20 I 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.=20 (ED if your monitoring please let me know if our info is correct) = The entire=20 idea of the VAM concept was to create a venturi to draw the cool air = in! The=20 reason for the donut fron section was it doubled as an end cap and = an inlet=20 bellmouth for the tube. Without the inside tube I am supprised the = thing=20 would draw air at all! I'll send you a close up drawing I sent PL's = list off=20 line. When you get your engine running it could be worth a re-try. I = am=20 supprised Ed missed the center tube, (if he did), he is a sharp guy = and=20 doesn't miss much. The other possibility is that he made it = removable and=20 they took it out prior to the test.
Bill Jepson
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