From: "Finn Lassen finn.lassen@verizon.net" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] Exhaust broken again
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
References: <list-91276@logan.com>
Message-ID: <68444cea-036a-7b1b-8e1b-8a810b1d76c3@verizon.net>
Date: Wed, 16 Jun 2021 09:13:57 -0400
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Have you tried the simplest solution?

Just a long pipe with end squeezed and welded shut wing, 1/8" holes 
drilled in it -- all pointed down. Enough of the 1/8" holes that the 
area of the 1/8" holes adds up to at least the cross section area of pipe.

Finn

On 6/16/2021 12:04 AM, Matt Boiteau mattboiteau@gmail.com wrote:
> Exhaust broke again. You can see my design here
> https://www.homebuiltairplanes.com/forums/threads/quiet-flight.6560/page-8#post-509393
>
> and how it broke at the end of the thread.
> https://wwwhomebuiltairplanes.com/forums/threads/quiet-flight.6560/page-9 
> <https://www.homebuiltairplanes.com/forums/threads/quiet-flight.6560/page-9>
>
> 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
>
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:   http://mail.lancaironline.net:81/lists/flyrotary/List.html


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    <div class="moz-cite-prefix">Have you tried the simplest solution?<br>
      <br>
      Just a long pipe with end squeezed and welded shut wing, 1/8"
      holes drilled in it -- all pointed down. Enough of the 1/8" holes
      that the area of the 1/8" holes adds up to at least the cross
      section area of pipe.<br>
      <br>
      Finn  <br>
      <br>
      On 6/16/2021 12:04 AM, Matt Boiteau <a class="moz-txt-link-abbreviated" href="mailto:mattboiteau@gmail.com">mattboiteau@gmail.com</a> wrote:<br>
    </div>
    <blockquote type="cite" cite="mid:list-91276@logan.com">
      <meta http-equiv="content-type" content="text/html; charset=utf-8">
      <div dir="ltr">
        <div>Exhaust broke again. You can see my design here</div>
        <div><a
href="https://www.homebuiltairplanes.com/forums/threads/quiet-flight.6560/page-8#post-509393"
            moz-do-not-send="true">https://www.homebuiltairplanes.com/forums/threads/quiet-flight.6560/page-8#post-509393</a><br>
        </div>
        <div><br>
        </div>
        <div>and how it broke at the end of the thread.</div>
        <div><a
href="https://www.homebuiltairplanes.com/forums/threads/quiet-flight.6560/page-9"
            moz-do-not-send="true">https://wwwhomebuiltairplanes.com/forums/threads/quiet-flight.6560/page-9</a><br>
        </div>
        <div><br>
        </div>
        <div>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 ?</div>
        <div><br>
        </div>
        <br clear="all">
        <div>
          <div dir="ltr" class="gmail_signature"
            data-smartmail="gmail_signature">
            <div dir="ltr">
              <div>
                <div dir="ltr">- Matt Boiteau</div>
              </div>
            </div>
          </div>
        </div>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
      <pre wrap="">--
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