X-Junk-Score: 0 [] X-KAS-Score: 0 [] From: "Le Roux Breytenbach breytenbachleroux@gmail.com" Received: from mail-vk1-f177.google.com ([209.85.221.177] verified) by logan.com (CommuniGate Pro SMTP 6.4.0) with ESMTPS id 2550005 for flyrotary@lancaironline.net; Sun, 29 Oct 2023 06:58:03 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.221.177; envelope-from=breytenbachleroux@gmail.com Received: by mail-vk1-f177.google.com with SMTP id 71dfb90a1353d-49d39f07066so1496100e0c.0 for ; Sun, 29 Oct 2023 03:58:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1698577065; x=1699181865; darn=lancaironline.net; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :from:to:cc:subject:date:message-id:reply-to; bh=HAdfpd8X99rfMP/12VCs/npP0XD4BAN/uNBG+uKMgqE=; b=dicMqZENnI23/MRIfnHMk5q89wQ+YM8bGaEZ6If+1P7L2iafZk/bJYvH5woSIZvQjh c3tkGkFn3ZwEFljLnkFydGiI0y6j2x31QZwRJ7lEzn6+CIyE1WQG0z0kVhO8n6lspIQ8 6tDfAqSqqJEnlw7+ZOHLDdVqHKXMYF1CxjyY8aa+MCmqHohMlze3Z/FIobkG81THda+B rUQNsVLvli4prav+ax0d6cR0a/wIZSmNiSwncfPLPa/q4Ru1hkcSeJpA5Wibhi4I+Nda m7EZNeiNTpMJqWIrnSmfpX0tU4/KLD9SfWYTkYVoStV4q0kVi5HGS4kobg3RUAo4iOFo vXIg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1698577065; x=1699181865; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=HAdfpd8X99rfMP/12VCs/npP0XD4BAN/uNBG+uKMgqE=; b=jBVgt9jdergmh/LcwCqRcc3MZzZY0FlgOb3ywgsK1pmWf/ywpiyqOUSHdZ/LmFgT7v 54zKOzbn72SIA7zLAMHh8CN9Sss4UHBN8iz6n/AckPydPhBKsjco79QgIQkDDEY22ADb kfXWFkDhm0szmIQ3iGn3CetLVIrOh6UmCCQLVYb6v0v36eecx5SiSHnrY7cwwuRkytZ2 JpHMkJINFRx62KMuFaPkx2zHpQs5acOvaMtF7n69yDAoBOZGuUOxvEsF0qJdli+6X+ko hCDREngWRYpnm60k/tfCq5w3YIJrlG5HvunFJfOblFAmMoflE/f4gqAc9fgCdfN7bQ40 kS1w== X-Gm-Message-State: AOJu0YzifO96zVkwQZQ7kXTlfhYvCVjt6rf61NRb1RCnRf5USvfqRnGB mj2py7fPRinFqtLnZl0aDlpqipWRHGHV1vo9i+H2L7fPbP0= X-Google-Smtp-Source: AGHT+IEQjCMLz9tVXbK2Y4goANOaHl7tmF+TnQJWoSVS2ENjR2pfviHSsgi47d2ZT73Hc2FJ/tj/VoAIVB3wtzuWumM= X-Received: by 2002:a67:c09d:0:b0:457:670f:e2eb with SMTP id x29-20020a67c09d000000b00457670fe2ebmr6838779vsi.20.1698577064774; Sun, 29 Oct 2023 03:57:44 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Date: Sun, 29 Oct 2023 12:57:32 +0200 Message-ID: Subject: Re: [FlyRotary] Updates on Muffler Experiences? To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="00000000000091d4c00608d8ca71" --00000000000091d4c00608d8ca71 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Doug : Can just share what i have when Paul Lamar's forum was still active. This is what exhaust system and muffler i am goiing install on my Vision Ex project. It is design so that it can be, build and manufactured, locally at any engineering business This system will develop the most power as it has no restrictions on flow and are a free flow system. This Coax muffler (outside pipe) is build out of 0.030 thickness 304 SS the inside 0.035 inch wall thickness 321 SS the picture is included I don't know if somebody has build and test these design but a prototype was build and test for sound spectrum The exhaust runners to the muffler must be flanged were it bolts to the rotar housings. It will cracked if flanges are weld to the runners There is also a other design setup but dont know if you are normal aspirated or turbo Can find this design somewhere if you need it Regards Le Roux Breytenbach South Africa https://drive.google.com/file/d/10BlyS5KYf_EgW4AnvbGBnUUbYfic235p/view?usp= =3Dsharing https://drive.google.com/file/d/10AoQHyvb6Led_HoZxIE_59V7RKz1zm9k/view?usp= =3Dsharing https://drive.google.com/file/d/105T3LqN9A87n10as8UCqaJJ8JwXfYq_u/view?usp= =3Dsharing https://drive.google.com/file/d/1TnvV8Ete6d6-MuxY2DPcKDbGjdfF-xwV/view?usp= =3Dsharing https://drive.google.com/file/d/10HAiWhQFj2fdkpzL8L5Vn-WGcEKsw5mh/view?usp= =3Dsharing On Fri, Oct 27, 2023 at 3:47=E2=80=AFPM Doug Lomheim rv9flyer13b@gmail.com = < flyrotary@lancaironline.net> wrote: > Hi Group: This winter I need to finalize the fabrication of an exhaust > system for my 86 13B. I searched the archives and found some were workin= g > on perfecting their prior installations due to cracking issues over time, > etc. I therefore was wondering if anyone had any updates on how well the > last iteration of their muffler was holding up, and what they=E2=80=99d s= uggest as > a starting point if in my shoes (beginning with a clean slate). > > thanks! > > Doug > > RV-9A / 13B (Tommy James engine in Glastar from 2006). > --00000000000091d4c00608d8ca71 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Doug : Can just share what i have when Paul Lamar's fo= rum was still active.

This is what exhaust system and mu= ffler i am goiing=C2=A0install on my Vision Ex project.
It is des= ign so that it can be,=C2=A0build and manufactured, locally at any engineer= ing business

This system will develop=C2=A0the mos= t power as it has no restrictions on flow and are a free flow system.
=
This Coax muffler (outside pipe) is build out of 0.030 thickness 304 S= S the inside 0.035 inch wall thickness=C2=A0 321 SS
the picture i= s included
I don't know if somebody has build and test these = design but a prototype was build and test for sound spectrum
The = exhaust=C2=A0runners to the muffler=C2=A0must be flanged were it bolts to t= he rotar=C2=A0housings.
It will cracked if flanges are weld to th= e runners

There is also a other design setup but d= ont=C2=A0know if you are normal aspirated=C2=A0or turbo=C2=A0
Can= find this design somewhere if you need it

Regards= Le Roux Breytenbach
South Africa

https://dr= ive.google.com/file/d/1TnvV8Ete6d6-MuxY2DPcKDbGjdfF-xwV/view?usp=3Dsharing<= /a>






<= /div>






On Fri, Oct 27, 2023 at 3:47=E2=80=AFPM Do= ug Lomheim rv9fl= yer13b@gmail.com <flyrotary@lancaironline.net> wrote:
Hi Group: = =C2=A0This winter I need to finalize the fabrication of an exhaust system f= or my 86 13B.=C2=A0 I searched the archives and found some were working on = perfecting=C2=A0their prior installations due to cracking=C2=A0issues over = time, etc.=C2=A0 I therefore was wondering if anyone had any updates on how= well=C2=A0the last iteration of=C2=A0their muffler was holding up, and wha= t they=E2=80=99d suggest as a starting point if in my=C2=A0shoes (beginning= with a clean slate). =C2=A0

<= div>thanks! =C2=A0

<= /font>
Doug=C2=A0

RV-9A / 13B (Tommy James engine = in Glastar from 2006).
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