X-CGP-ClamAV-Result: CLEAN X-VirusScanner: Niversoft's CGPClamav Helper v1.23.0 (ClamAV engine v0.103.0) X-Junk-Score: 0 [] X-KAS-Score: 0 [] From: " 12348ung@gmail.com" Received: from mail-pg1-f181.google.com ([209.85.215.181] verified) by logan.com (CommuniGate Pro SMTP 6.3.5) with ESMTPS id 91315 for flyrotary@lancaironline.net; Wed, 16 Jun 2021 01:54:25 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.215.181; envelope-from=12348ung@gmail.com Received: by mail-pg1-f181.google.com with SMTP id l184so1062573pgd.8 for ; Tue, 15 Jun 2021 22:54:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:references:in-reply-to:subject:date:message-id:mime-version :thread-index:content-language; bh=idugjfTcGEO6HXm7eh1VOiFNOYzsx1S33Q9oxLlCA6Q=; b=dmqqS/WBm1v5Y+RrucDfb8Nz5OG94cQLUsVrOkITM+m/LfXfvKbCJ97IfYlqkrr7Zl pxkrZhjq83K2lUSG342DAAwRvmHDz/1+aOCm4uVP+WhbDc1il25rmj5/r5uRp8tzHq1r gl7mTJmnc7Kssd8o3bSkSt76FN6OGFKl+51kcysZqdPlEbgCLGLG37S+IjyS1BUmwr54 JpXQvQMKSYAu+y4u88fLFZ3xjZ8slz2z4zfKTPaejWIYuAImJX1SPcS5bhNzvG0w6Lvl ZKJV496vShnIpM1vVUC+CarRkWd6vBoJloELMtEMGkG9iAFVBS0OIidHyF7+s9cGvQJt owvw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:references:in-reply-to:subject:date :message-id:mime-version:thread-index:content-language; bh=idugjfTcGEO6HXm7eh1VOiFNOYzsx1S33Q9oxLlCA6Q=; b=rW91U3Hf3m/2i2aEFf/S2Ksh4d10J1kj73fl97ACZC0V+k/TPQ/4qTk0vNwttbL1pd NJqPti/IVjXLwN/nBdbUyw5JR2k8lAs/UH1/rp5Wu6pXeSKvJWWheC6BU1sHkYQ+epeP +yPwLr1R9khXehXDZdj97T331PbOqAanMWVGu645IEGcAnQbIHLFAdZXr7sTrTJexT6y 0iZ9rJluZ37HPenfXIzwhSTzZZ5Xd9jPVxIk0totMQN+xFnFtl38u5Xc+DZb9OfNLAOw mXZw4NWWN4Mw0z2qxcwPzrefZY0ULiAWL38/d3ISnsIs2ehtKu4NK4+6vX2094yGhaCM xAXg== X-Gm-Message-State: AOAM5332c8TSyXvb80XbHThOOD0tvTTy5CUnHETgjNEq7990ipfljGnF fyhjA9opX3/HrIsS4867RIFPI/R+7gs= X-Google-Smtp-Source: ABdhPJyfBOefHwbo7oQdgT4O+LPAW3uc00yyr8+mrMqhj5eZY7fHSw8qbGFStk+d4sWkReJLwk0YzA== X-Received: by 2002:a62:1e82:0:b029:2f9:aad3:b368 with SMTP id e124-20020a621e820000b02902f9aad3b368mr7978004pfe.79.1623822848829; Tue, 15 Jun 2021 22:54:08 -0700 (PDT) Return-Path: <12348ung@gmail.com> Received: from UserPC ([103.198.24.78]) by smtp.gmail.com with ESMTPSA id q12sm1045481pgc.25.2021.06.15.22.54.07 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Tue, 15 Jun 2021 22:54:08 -0700 (PDT) To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Exhaust broken again Date: Wed, 16 Jun 2021 15:54:04 +1000 Message-ID: <001c01d76274$055c9180$1015b480$@gmail.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001D_01D762C7.D708A180" X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQFpadOIVCUJpxsRUwr//CG10bEYDavyEV+A Content-Language: en-us This is a multipart message in MIME format. ------=_NextPart_000_001D_01D762C7.D708A180 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Mat, Looks like it got very warm in there! The middle tube is = starting destruct, nothing you don=E2=80=99t know. I tried many systems = but failed to keep the noise down. Hence the turbo and a muffler as = well. Yet to be tried. The muffler is a straight through with packing. = 15LBS is the problem and now putting it out in the airstream. =20 Mat I would suggest a slip coupling at the end of the muffler where it = broke, and dish the outer and inner of the flange to allow flex where = you have welded the end in the muffler. Make the flange bigger and heat = to form a 3/8 the both flanges. I used a small hammer to make the dish = on both inner and outer. It does make welding the = =E2=80=9Cfiller=E2=80=9D flange easy with the flanges on outer and = inner. Regards,=20 =20 From: Rotary motors in aircraft =20 Sent: Wednesday, June 16, 2021 2:04 PM To: Rotary motors in aircraft Subject: [FlyRotary] Exhaust broken again =20 Exhaust broke again. You can see my design here https://www.homebuiltairplanes.com/forums/threads/quiet-flight.6560/page-= 8#post-509393 =20 and how it broke at the end of the thread. https://www.homebuiltairplanes.com/forums/threads/quiet-flight.6560/page-= 9 =20 I only used 0.050"thick 321ss for the inside perforated pipe. I'm = guessing I should find thicker pipe, and add more holes for version: 14 = ? =20 - Matt Boiteau ------=_NextPart_000_001D_01D762C7.D708A180 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Mat,

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0 Looks like it got very warm in there!=C2=A0 The = middle tube is starting destruct, nothing you don=E2=80=99t know.=C2=A0 = I tried many systems but failed to keep the noise down.=C2=A0 Hence the = turbo and a muffler as well.=C2=A0 Yet to be tried.=C2=A0 The muffler is = a straight through with packing.=C2=A0 15LBS is the problem and now = putting it out in the airstream.=C2=A0

Mat I would suggest a slip coupling = at the end of the muffler where it broke, and dish the outer and inner = of the flange to allow flex where you have welded the end in the = muffler.=C2=A0 Make the flange bigger and heat to form a 3/8 the both = flanges. I used a small hammer to make the dish on both inner and = outer.=C2=A0=C2=A0 It does make welding the =E2=80=9Cfiller=E2=80=9D = flange easy with the flanges on outer and inner.

Regards,

 

From: Rotary motors in aircraft = <flyrotary@lancaironline.net>
Sent: Wednesday, June 16, = 2021 2:04 PM
To: Rotary motors in aircraft = <flyrotary@lancaironline.net>
Subject: [FlyRotary] = Exhaust broken again

 

Exhaust broke again. You can see my design = here

 

and how it broke at the end of the = thread.

 

I = only used 0.050"thick 321ss for the inside perforated pipe. = I'm guessing I should find thicker pipe, and add more holes for version: = 14 ?

 


- Matt = Boiteau

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