From: "Andrew Martin andrew@martinag.com.au" <flyrotary@lancaironline.net>
Received-SPF: none
 receiver=logan.com; client-ip=209.85.208.44; envelope-from=andrew@martinag.com.au
MIME-Version: 1.0
References: <list-2593342@lancaironline.net>
In-Reply-To: <list-2593342@lancaironline.net>
Date: Fri, 10 Nov 2023 11:27:00 +0800
Message-ID: <CAJxaVD3X_t72MdPzJmEh6yZxXiJfwCtLcsF0HV7-pQNXaovnWQ@mail.gmail.com>
Subject: Re: [FlyRotary] Welding cast iron
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Content-Type: multipart/alternative; boundary="0000000000008cdbd40609c3e571"

--0000000000008cdbd40609c3e571
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

Always preheat cast prior to welding,  if you didn't know this, best to
practice on something not on your aircraft first. I've been welding on the
farm for 40 years but still got a coded welder to weld the critical parts
of the exhaust after I had fabricated, tack welded & worked out the welding
sequence required to get full welds on all joins.
Andrew

On Fri, 10 Nov 2023, 8:50 am DOUGLAS LOMHEIM dlomheim@aol.com, <
flyrotary@lancaironline.net> wrote:

>
>
>
> I know many on the list have welded on the stock cast iron exhaust
> manifolds, so was wondering if there were any lessons learned / things to
> avoid?  I=E2=80=99m going to need to cut the down turn off and weld on so=
mething to
> turn it 135 degrees or so, to allow it to ultimately exit out the bottom =
of
> the cowling=E2=80=A6. Thx!
> Sent from my iPhone--
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:
> http://mail.lancaironline.net:81/lists/flyrotary/List.html
>

--0000000000008cdbd40609c3e571
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"auto">Always preheat cast prior to welding,=C2=A0 if you didn&#=
39;t know this, best to practice on something not on your aircraft first. I=
&#39;ve been welding on the farm for 40 years but still got a coded welder =
to weld the critical parts of the exhaust after I had fabricated, tack weld=
ed &amp; worked out the welding sequence required to get full welds on all =
joins.<div dir=3D"auto">Andrew</div></div><br><div class=3D"gmail_quote"><d=
iv dir=3D"ltr" class=3D"gmail_attr">On Fri, 10 Nov 2023, 8:50 am DOUGLAS LO=
MHEIM <a href=3D"mailto:dlomheim@aol.com">dlomheim@aol.com</a>, &lt;<a href=
=3D"mailto:flyrotary@lancaironline.net">flyrotary@lancaironline.net</a>&gt;=
 wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8=
ex;border-left:1px #ccc solid;padding-left:1ex"><br>
<br>
<br>
I know many on the list have welded on the stock cast iron exhaust manifold=
s, so was wondering if there were any lessons learned / things to avoid?=C2=
=A0 I=E2=80=99m going to need to cut the down turn off and weld on somethin=
g to turn it 135 degrees or so, to allow it to ultimately exit out the bott=
om of the cowling=E2=80=A6. Thx!<br>
Sent from my iPhone--<br>
Homepage:=C2=A0 <a href=3D"http://www.flyrotary.com/" rel=3D"noreferrer nor=
eferrer" target=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 noreferrer" target=3D"_blank">=
http://mail.lancaironline.net:81/lists/flyrotary/List.html</a><br>
</blockquote></div>

--0000000000008cdbd40609c3e571--