X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.3 cv=H+OlPNQi c=1 sm=1 tr=0 a=y4ksPuwiWHPUMemHezaSSw==:117 a=xycr6CVXJRVtFs4WRGOeRA==:17 a=jpOVt7BSZ2e4Z31A5e1TngXxSK0=:19 a=MeAgGD-zjQ4A:10 a=pGLkceISAAAA:8 a=Ia-xEzejAAAA:8 a=eRLigfuSAAAA:8 a=meJbv3C4AAAA:8 a=7g1VtSJxAAAA:8 a=xxpLfT7k90QC8EkRDY4A:9 a=QEXdDO2ut3YA:10 a=Qa1je4BO31QA:10 a=oOz5yF6qyDwA:10 a=gvSQh4r-fQ0A:10 a=xPyZ54XvAAAA:8 a=ClCdBuN5cy0OJbk0:21 a=_W_S_7VecoQA:10 a=Urk15JJjZg1Xo0ryW_k8:22 a=BfhXYjFvZD4iae-mNffo:22 a=grOzbf7U_OpcSX4AJOnl:22 a=LQCduUwlY3eUW_MavTj7:22 From: "Marcus Wiese cardmarc@charter.net" Received: from [47.43.20.27] (HELO impout003.msg.chrl.nc.charter.net) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 13196943 for flyrotary@lancaironline.net; Wed, 20 Nov 2019 08:39:07 -0500 Received-SPF: pass receiver=logan.com; client-ip=47.43.20.27; envelope-from=cardmarc@charter.net Received: from [192.168.1.107] ([97.94.202.172]) by cmsmtp with ESMTPA id XQC0i5QXWQFrUXQC1iwdb3; Wed, 20 Nov 2019 13:38:49 +0000 Authentication-Results: charter.net; none X-Authority-Analysis: v=2.3 cv=Xf89M7x5 c=1 sm=1 tr=0 a=xycr6CVXJRVtFs4WRGOeRA==:117 a=xycr6CVXJRVtFs4WRGOeRA==:17 a=jpOVt7BSZ2e4Z31A5e1TngXxSK0=:19 a=pGLkceISAAAA:8 a=Ia-xEzejAAAA:8 a=eRLigfuSAAAA:8 a=meJbv3C4AAAA:8 a=7g1VtSJxAAAA:8 a=xxpLfT7k90QC8EkRDY4A:9 a=QEXdDO2ut3YA:10 a=Qa1je4BO31QA:10 a=oOz5yF6qyDwA:10 a=gvSQh4r-fQ0A:10 a=xPyZ54XvAAAA:8 a=ClCdBuN5cy0OJbk0:21 a=_W_S_7VecoQA:10 a=Urk15JJjZg1Xo0ryW_k8:22 a=BfhXYjFvZD4iae-mNffo:22 a=grOzbf7U_OpcSX4AJOnl:22 a=LQCduUwlY3eUW_MavTj7:22 Content-Type: multipart/alternative; boundary=Apple-Mail-F4B04AE5-4361-4261-BB99-1637ED9E41C5 Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) Date: Wed, 20 Nov 2019 07:38:48 -0600 Subject: Re: [FlyRotary] Re: Mufflers Message-Id: <88648283-1395-4380-9565-FA8CA51EE8A4@charter.net> References: In-Reply-To: To: Rotary motors in aircraft X-Mailer: iPad Mail (17A878) X-CMAE-Envelope: MS4wfLBzq7L3wIxvCPXqvBdXx1Rg5mgr1OWXf9tQTOjQj1gDYjP4qttZqoq+VfdUy0vXAW5HOqNCXiR7pt7NiBOCZWKfnNs9IhgQ/bOVXtfUy6DwjWPFo2fz MjkMtjBBhpkuo+JXazMXANuRBvfmVPulDicqQHnHp3JXtacVMdlvnmff2Q39NSCIVUXtdRHdOuS18A== --Apple-Mail-F4B04AE5-4361-4261-BB99-1637ED9E41C5 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Just remember the Mistral muffler event. The muffler caused the Piper Arrow = (?) with their rotary to crash after the internals blocked the outlet and l= ed to power loss. It may have partially led to their withdrawal from the eng= ine/PSRU market. To all our loss. M Sent from my iPad > On Nov 20, 2019, at 12:28 AM, Matt Boiteau mattboiteau@gmail.com wrote: >=20 > =EF=BB=BF > This is the Aero Exhaust 2525XL diagram. I have one, but left it in Canada= . Will bring it back with me in Jan to try at taming the exhaust again. >=20 >=20 >=20 > - Matt Boiteau >> On 2019-11-19 3:23:50 PM, Charlie England ceengland7@gmail.com wrote: >>=20 >>=20 >>=20 >>> On Mon, Nov 18, 2019 at 11:57 PM Andrew Martin andrew@martinag.com.au wrote: >>>=20 >>> Kelly, I would if I had some, really did not expect it to work as I devi= ated from the design a bit. Will be back at airport on weekend to take photo= , too late for construction photo. But nothing to it. >>>=20 >>> I read about the idea by Gary Schwarz in this thread, post #7 , post #58= for his testing and post #142 sums up his findings. >>> Someone on here may know him as he was doing it for a rotary. Mine is mu= ch shorter than his drawing below due to space constraints but the theory wo= rks.=20 >>> edit: Ahh!!! deleted his picture as too big to post. it is in his post #= 7 mentioned above though. >>> Andrew >>>=20 >> That looks a lot like a simplified version (one less turn) of a standard a= utomotive muffler. >> https://auto.howstuffworks.com/muffler3.htm >> The Aeroturbine tries to achieve similar effect (without the flow reversa= ls) by using venturi effect to suck part of the exhaust around and then back= into the central tube. >>=20 >> Charlie >>=20 >> =20 >=20 > <2525.JPG> > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List= .html --Apple-Mail-F4B04AE5-4361-4261-BB99-1637ED9E41C5 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable Just remember the Mistral muffler event. Th= e muffler caused the Piper Arrow  (?) with their rotary to crash after t= he internals blocked the outlet and led to power loss. It may have partially= led to their withdrawal from the engine/PSRU market. To all our loss.
M=

Sent from my iPad

On Nov 20, 2019, at 12:28 AM, Matt Boiteau mattboiteau@gm= ail.com <flyrotary@lancaironline.net> wrote:

=EF=BB=BF
This is the Aero Exhaust 2525XL diagram. I have one, but left it in Canada.= Will bring it back with me in Jan to try at taming the exhaust again.



- Matt Boiteau

On 20= 19-11-19 3:23:50 PM, Charlie England ceengland7@gmail.com <flyrotary@lanc= aironline.net> wrote:



On Mon, Nov 18, 2019 at 11:57 PM Andrew Martin andrew@martinag.com.au <flyrotary@lancaironline.net>= ; wrote:

Kelly, I would if I had some, really= did not expect it to work as I deviated from the design a bit. Will be back= at airport on weekend to take photo, too late for construction photo. But n= othing to it.

I read about the idea b= y Gary Schwarz in this thread, post #7 , post #58= for his testing and post #142 sums up his findings.
Someone on here may know him as he was doing it for a rotary. Mine is mu= ch shorter than his drawing below due to space constraints but the theory wo= rks.
edit: Ahh!!! deleted his picture as to= o big to post. it is in his post #7 mentioned above though.
Andrew=

That looks a lot like a simplified version (one less turn) o= f a standard automotive muffler.
The Aeroturbine tr= ies to achieve similar effect (without the flow reversals) by using venturi e= ffect to suck part of the exhaust around and then back into the central tube= .

Charlie

 
<2525.JPG>
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