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Message-Id: <3d55a4c714e6178bd0409f4d115710e1@gmail.com>
From: Hans Conser <hansconser@gmail.com>
Subject: Re: [FlyRotary] Re: Exhaust Update
Date: Wed, 11 Oct 2006 11:46:17 -0600
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
X-Mailer: Apple Mail (2.624)


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On Oct 9, 2006, at 11:10 PM, Joe Hull wrote:

> >Just a heads up - it looks like your new "header flange to pipe"=20
> (picture 5)=A0was welded on the >outside.=A0 I think that 'acceptable=20=

> practices' state that there should only be a tack weld on the >outside=20=

> and the actual structural weld should be on the inside.=A0 What does=20=

> everyone else say?=A0=A0 In >any event be sure to keep an eye on the=20=

> welds.
> >
> >Ken Powell
> =A0
> Ken,
> Yes, I=92ve heard that from PL=92s list =96 but haven=92t seen =
pictures of any=20
> other flying Rotary that is welded that way. I was going to tell=20
> Aircraft Exhaust to only weld it on the inside but forgot. But I=92m =
not=20
> sure there is agreement about this among the rotary flyers.
> =A0
> Joe Hull


It is recommended in Bell's book on turbocharging.  All the discussion=20=

made me go look at the Racing Beat headers sitting in my garage, and=20
they are bead welded on the outside only.

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On Oct 9, 2006, at 11:10 PM, Joe Hull wrote:


<excerpt><fontfamily><param>Times New =
Roman</param><color><param>0000,0000,8080</param><bigger><bigger>></bigger=
></bigger></color><bigger><bigger>Just
a heads up - it looks like your new "header flange to pipe" (picture
5)=A0was welded on the
<color><param>0000,0000,8080</param>></color>outside.=A0 I think that
'acceptable practices' state that there should only be a tack weld on
the <color><param>0000,0000,8080</param>></color>outside and the
actual structural weld should be on the inside.=A0 What does everyone
else say?=A0=A0 In <color><param>0000,0000,8080</param>></color>any =
event
be sure to keep an eye on the welds.</bigger></bigger></fontfamily>

<fontfamily><param>Times New =
Roman</param><color><param>0000,0000,8080</param><bigger><bigger>></bigger=
></bigger></color></fontfamily>

<fontfamily><param>Times New =
Roman</param><color><param>0000,0000,8080</param><bigger><bigger>></bigger=
></bigger></color><bigger><bigger>Ken
Powell</bigger></bigger></fontfamily>

=
<fontfamily><param>Arial</param><color><param>0000,0000,8080</param><x-tad=
-bigger>=A0</x-tad-bigger></color></fontfamily>

=
<fontfamily><param>Arial</param><color><param>0000,0000,8080</param><x-tad=
-bigger>Ken,</x-tad-bigger></color></fontfamily>

=
<fontfamily><param>Arial</param><color><param>0000,0000,8080</param><x-tad=
-bigger>Yes,
I=92ve heard that from PL=92s list =96 but haven=92t seen pictures of =
any
other flying Rotary that is welded that way. I was going to tell
Aircraft Exhaust to only weld it on the inside but forgot. But I=92m not
sure there is agreement about this among the rotary =
flyers.</x-tad-bigger></color></fontfamily>

=
<fontfamily><param>Arial</param><color><param>0000,0000,8080</param><x-tad=
-bigger>=A0</x-tad-bigger></color></fontfamily>

=
<fontfamily><param>Arial</param><color><param>0000,0000,8080</param><x-tad=
-bigger>Joe
Hull</x-tad-bigger></color></fontfamily>

</excerpt>


It is recommended in Bell's book on turbocharging.  All the discussion
made me go look at the Racing Beat headers sitting in my garage, and
they are bead welded on the outside only.


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