From: "Matt Boiteau mattboiteau@gmail.com" <flyrotary@lancaironline.net>
Received-SPF: pass
 receiver=logan.com; client-ip=209.85.208.175; envelope-from=mattboiteau@gmail.com
MIME-Version: 1.0
References: <list-91525@logan.com>
In-Reply-To: <list-91525@logan.com>
Date: Wed, 16 Jun 2021 08:35:31 -0400
Message-ID: <CAP-UEKtaa7VGcq_XQVNQOoj1KUjF7UHHRU_CRx39Orx7PSQbZQ@mail.gmail.com>
Subject: Re: [FlyRotary] Re: [FlyRotary ] Exhaust broke again
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Content-Type: multipart/alternative; boundary="0000000000003bd43b05c4e1540a"

--0000000000003bd43b05c4e1540a
Content-Type: text/plain; charset="UTF-8"

Jeff, do you have any links for pictures of Mistral?

Neil, there are double slips on all three head tubes. And the inner tube is
welded on one side and slipped on the other. Either I run with a thicker
wall perforated inner pipe or try without one. Just have a large empty can.

- Matt Boiteau


On Wed, Jun 16, 2021 at 7:53 AM Jeff Whaley jwhaley@datacast.com <
flyrotary@lancaironline.net> wrote:

> Hi Matt, I could be wrong but your muffler looks like the one MISTRAL
> installed, failed, and brought down their test aircraft ... not sure why
> you are going that route?
> Yep, looks like the easiest, most compact design but why flog a dead
> horse.  Three or four feet downstream from the exhaust ports is a much
> safer place for a roll-your-own muffler.
> My 2 cents worth ... Jeff
>
> 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://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
>

--0000000000003bd43b05c4e1540a
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div dir=3D"ltr">Jeff, do you have any links for pictures =
of Mistral?</div><div dir=3D"ltr"><br><div>Neil, there are double slips on =
all three head tubes. And the inner tube is welded on one side and slipped =
on the other. Either I run with a thicker wall perforated inner pipe or try=
 without one. Just have a large empty=C2=A0can.<br>=C2=A0<br clear=3D"all">=
<div><div dir=3D"ltr" class=3D"gmail_signature" data-smartmail=3D"gmail_sig=
nature"><div dir=3D"ltr"><div><div dir=3D"ltr">- Matt Boiteau</div></div></=
div></div></div><br></div></div><br><div class=3D"gmail_quote"><div dir=3D"=
ltr" class=3D"gmail_attr">On Wed, Jun 16, 2021 at 7:53 AM Jeff Whaley <a hr=
ef=3D"mailto:jwhaley@datacast.com">jwhaley@datacast.com</a> &lt;<a href=3D"=
mailto:flyrotary@lancaironline.net">flyrotary@lancaironline.net</a>&gt; wro=
te:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px =
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi Matt, I c=
ould be wrong but your muffler looks like the one MISTRAL installed, failed=
, and brought down their test aircraft ... not sure why you are going that =
route?<br>
Yep, looks like the easiest, most compact design but why flog a dead horse.=
=C2=A0 Three or four feet downstream from the exhaust ports is a much safer=
 place for a roll-your-own muffler.<br>
My 2 cents worth ... Jeff<br>
<br>
Exhaust broke again. You can see my design here<br>
<a href=3D"https://www.homebuiltairplanes.com/forums/threads/quiet-flight.6=
560/page-8#post-509393" rel=3D"noreferrer" target=3D"_blank">https://www.ho=
mebuiltairplanes.com/forums/threads/quiet-flight.6560/page-8#post-509393</a=
><br>
<br>
and how it broke at the end of the thread.<br>
<a href=3D"https://www.homebuiltairplanes.com/forums/threads/quiet-flight.6=
560/page-9" rel=3D"noreferrer" target=3D"_blank">https://www.homebuiltairpl=
anes.com/forums/threads/quiet-flight.6560/page-9</a><br>
<br>
I only used 0.050&quot;thick 321ss for the inside perforated pipe. I&#39;m =
guessing I should find thicker pipe, and add more holes for version: 14 ?<b=
r>
<br>
<br>
- Matt Boiteau<br>
<br>
--<br>
Homepage:=C2=A0 <a href=3D"http://www.flyrotary.com/" rel=3D"noreferrer" ta=
rget=3D"_blank">http://www.flyrotary.com/</a><br>
Archive and UnSub:=C2=A0 =C2=A0<a href=3D"http://mail.lancaironline.net:81/=
lists/flyrotary/List.html" rel=3D"noreferrer" target=3D"_blank">http://mail=
.lancaironline.net:81/lists/flyrotary/List.html</a><br>
</blockquote></div></div>

--0000000000003bd43b05c4e1540a--