Received-SPF: neutral
 receiver=logan.com; client-ip=66.196.96.94; envelope-from=bryanwinberry@bellsouth.net
From: "Bryan Winberry" <bryanwinberry@bellsouth.net>
To: "'Rotary motors in aircraft'" <flyrotary@lancaironline.net>
References: <list-3596854@logan.com>
Subject: RE: [FlyRotary] Re: Exhaust system wall thickness
Date: Sun, 26 Apr 2009 09:48:45 -0400
Message-ID: <7805826A96FB4DDEBD968530EBFADA63@acer7fbfa7e2f7>
MIME-Version: 1.0
Content-Type: text/plain;
	charset="us-ascii"
Content-Transfer-Encoding: 7bit
Thread-Index: AcnGGx0EgCUJ8OALTGyZUMra0JGXgAAWmSMg
In-Reply-To: <list-3596854@logan.com>

Sorry for the previous empty message.
Does anyone have a feel for the difference in weight between the stock
manifold and custom SS or inconel, etc.?

Bryan

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Bobby J. Hughes
Sent: Sunday, April 26, 2009 12:00 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Exhaust system wall thickness

Chris M.

I would also like to see how you modified yours. I cut the end off just
about flush with the front of the engine. I then expanded a 90 degree
321 SS tube to slip fit between the inner floating tube and outer shell
and had it welded. Have you been able to identify the inner tube
material? Magnetism seemed weaker than my 321 tube.

Bobby  

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of The Mallorys
Sent: Saturday, April 25, 2009 4:31 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Exhaust system wall thickness

Chris,

That is the approach I took for my Renesis.  I spent the time to cut
away the outer shell from the stock manifold, leaving only the inside
pieces.
Then I welded the two pieces together.  None of my pictures show it very
well, so I'll have to take a new one if you need it.

Chris Mallory

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Bobby J. Hughes
Sent: Saturday, April 25, 2009 3:00 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Exhaust system wall thickness

Chris,

If I remember correctly you have a Renesis. If so, the stock manifold
can easily be cut down and used. It's a little heavy but you don't have
to worry about it holding up. I may try a lighter manifold in the
future. But for now it's one less thing to worry about during the first
100 hrs. The stock manifold can be had for under $100 but may take some
looking. It also has a good heat shield that can be partly used. At
least three folks on this list have taken this approach. 

Here's one on Ebay with no reserve and no bids.  
http://cgi.ebay.com/ebaymotors/RX8-Exhaust-Manifold-and-O2-sensor-No-Res
erve_W0QQitemZ230338894473QQcmdZViewItemQQimsxZ20090423?IMSfp=TL09042314
10006r30271


Bobby Hughes  

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Christopher Owens
Sent: Saturday, April 25, 2009 12:32 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Exhaust system wall thickness

Hi Al,

I agree, but don't have much experience with these kinds of metal and
how much they weigh.  I suspected that if I asked about the high side,
someone would reply that I didn't need that much and make a good
recommendation.  I do greatly appreciate the insight :-)

Best regards,
Chris


On Apr 25, 2009, at 12:49 AM, Al Gietzen wrote:

> with, and I found some notes about using SS handrail tubing, 
> approximately 0.12" in wall thickness.  If one were to build matching 
> muffler components to attach to those tubes, would 0.12" be sufficient

> thickness (presuming 304SS or similar)?  Thicker?  Thinner?
>
> Chris;
>
> You're building an airplane.  Weight matters.  .035 inconel is good.
>
> Al G
>
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:   http://mail.lancaironline.net:81/lists/ 
> flyrotary/List.html


--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:
http://mail.lancaironline.net:81/lists/flyrotary/List.html

--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:
http://mail.lancaironline.net:81/lists/flyrotary/List.html


--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:
http://mail.lancaironline.net:81/lists/flyrotary/List.html

--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:
http://mail.lancaironline.net:81/lists/flyrotary/List.html