X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from wr-out-0506.google.com ([64.233.184.238] verified) by logan.com (CommuniGate Pro SMTP 5.2c4) with ESMTP id 2645154 for flyrotary@lancaironline.net; Mon, 14 Jan 2008 17:12:32 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.233.184.238; envelope-from=msteitle@gmail.com Received: by wr-out-0506.google.com with SMTP id 70so736162wra.7 for ; Mon, 14 Jan 2008 14:11:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; bh=TZ+A3o9mi09xmjx3hp9xEuSmB6ISfHGduIkxdpHKmnk=; b=e3D4AAki0aFsd1FflmA7/CZISgr53dL93N5AX/1CRKr+5vTfdCh56NLAKgzQhIG6/MZ2zUTMzZgHpBmY/NNhg1/1qVYyb06CoXr70zPixkUaPKZAYkOFir9ZhcnS96gsj8tHdZ/ILILhDgE5DSrDYIwtBmbwtjoGkMocFu2GfUk= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; b=hbRR7zpBsw6uBaZgXOBTKRpW9ax600/rZIXHR9KRMTQK2d+6W9AUipfgK+URn9UgENwkLliUGWqAZDSHz/uly/MUzdS6ipK75u2IgNnDfErOUqVMrBDcMwLZWAPwhG8PnoktThRMK6DLIJHYJeyXlgJH6R6hY2NFdMS9Kpqjb88= Received: by 10.150.96.10 with SMTP id t10mr2635047ybb.156.1200348710657; Mon, 14 Jan 2008 14:11:50 -0800 (PST) Received: by 10.150.178.14 with HTTP; Mon, 14 Jan 2008 14:11:50 -0800 (PST) Message-ID: <5cf132c0801141411w76e51ea9jf95c9ceac38d6d7e@mail.gmail.com> Date: Mon, 14 Jan 2008 16:11:50 -0600 From: "Mark Steitle" To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: What's this In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_4739_18301356.1200348710554" References: ------=_Part_4739_18301356.1200348710554 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline George, You could be right about the strapping, but you can see the white stuff oozing up through almost every hole in the perforated outer shell. I figure that another 1/2 hour flight ought to just about finish it off. Also, from my previous history with the "auger" muffler, I should have realized that 304ss wasn't up to the task. There are signs of that already by the grey dust/powder inside the muffler. Maybe Flowmaster will agree to make one out of 321ss. Mark On 1/14/08, George Lendich wrote: > > Mark, > I have been thinking about this and have come to the conclusion that it > isn't the packing material melting as I believe that would more than likely > turn to dust rather than melt. > It will more likely be some glue or strapping that holds the packing > material in place, before they put on the outer shield. > George ( down under) > > > Dennis, > The outside of the muffler did change color a little. Out of the box it > looked almost like polished stainless steel. Now it still looks shiny, but > it has a definite honey color to it. Yes, I plan to fly it again. If the > packing material melts, or gets pulverized, so be it. As long as it hasn't > lost its structural integrity I will fly it. Of course, if it gets too loud > for the ANR to handle the noise, or if people start to complain, then I'll > change it out. I'm growing weary of working on the exhaust system. It is > still quieter than the "auger" muffler. > > Your system may be easier on the HP-2 due to 1) side port exhaust, > 2) stock exhaust manifold, 3) tangential muffler and 4) more distance from > the exhaust port to the muffler. I may have to rethink my design > to increase the distance between the exhaust port and muffler. The > instructions did warn that the muffler would get very hot due to some > engineering double-speak. Little did I know that it would spill its guts on > the hangar floor. > > Yes, come on down. Best BBQ for miles around. > > Mark > > > On 1/13/08, Dennis Haverlah wrote: > > > > My muffler never gets "HOT" enough to eject -drip- anything on the > > floor!!. > > I have seen EGT numbers in the low 1800s while at full throttle and > > running slightly rich without any noticeable change in muffler performance. > > So far no one has said my muffler is louder than my first flight. > > > > I never expected the HP - 2 to work or anything but the Renesis - but I > > did not expect to see "stuff" melting and dripping out either. > > > > Mark - are you going to fly it again as is or what is your plan - I may > > want to fly over to Lockhart and watch! I am ready for more Barbecue also! > > > > Dennis H. > > > > Bill Bradburry wrote: > > > > Mark, > > > > Did the stuff get on the bottom of your plane? Has this affected the > > sound of your exhaust? Did Dennis' muffler do this? > > > > I noticed his muffler had a white coating on the outside like it had > > been hot. Has yours turned color? > > > > I wonder how hot the muffler gets at high power settings? Didn't you > > say something about a hand held temp gage? > > > > > > > > Bill B > > > > > > ------------------------------ > > > > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] > > *On Behalf Of *Mark Steitle > > *Sent:* Sunday, January 13, 2008 9:40 PM > > *To:* Rotary motors in aircraft > > *Subject:* [FlyRotary] Re: What's this > > > > OK, I can see this is going nowhere. So I guess I'll have to tell > > you. This is what came out of my new HP-2 muffler after a short 20 minute > > flight. What you saw in the previous picture was the packing material > > MELTING and dripping out the end of the muffler. In the second picture, you > > can see it oozing out of the little holes in the intermediate housing. I > > was expecting it to "blow out" eventually, but I wasn't expecting it to melt > > and run out the tailpipe. This just blows my mind. Where to go from > > here??? Maybe I should replace the packing with titanium shavings, or > > lithium crystals. > > > > Mark > > > > > > > > On Jan 13, 2008 8:23 PM, wrote: > > > > Terminator Tweety? > > > > > > > > ------------------------------ > > > > Start the year off right. Easy ways to stay in shapein the new year. > > > > > > > > > ------------------------------ > > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.516 / Virus Database: 269.19.2/1221 - Release Date: > 12/01/2008 2:04 PM > > ------=_Part_4739_18301356.1200348710554 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline
George,
You could be right about the strapping, but you can see the white stuff oozing up through almost every hole in the perforated outer shell.  I figure that another 1/2 hour flight ought to just about finish it off.  
 
Also, from my previous history with the "auger" muffler, I should have realized that 304ss wasn't up to the task.  There are signs of that already by the grey dust/powder inside the muffler.  Maybe Flowmaster will agree to make one out of 321ss. 
 
Mark

 
On 1/14/08, George Lendich <lendich@optusnet.com.au> wrote:
Mark,
I have been thinking about this and have come to the conclusion that it isn't the packing material melting as I believe that would more than likely turn to dust rather than melt.
It will more likely be some glue or strapping that holds the packing material in place, before they put on the outer shield.
George ( down under) 
 
Dennis,
The outside of the muffler did change color a little.  Out of the box it looked almost like polished stainless steel.  Now it still looks shiny, but it has a definite honey color to it.  Yes, I plan to fly it again.  If the packing material melts, or gets pulverized, so be it.  As long as it hasn't lost its structural integrity I will fly it.  Of course, if it gets too loud for the ANR to handle the noise, or if people start to complain, then I'll change it out.  I'm growing weary of working on the exhaust system.  It is still quieter than the "auger" muffler.
 
Your system may be easier on the HP-2 due to 1) side port exhaust, 2) stock exhaust manifold, 3) tangential muffler and 4) more distance from the exhaust port to the muffler.  I may have to rethink my design to increase the distance between the exhaust port and muffler.  The instructions did warn that the muffler would get very hot due to some engineering double-speak.  Little did I know that it would spill its guts on the hangar floor. 
 
Yes, come on down.  Best BBQ for miles around.  
 
Mark  

 
On 1/13/08, Dennis Haverlah <clouduster@austin.rr.com > wrote:
My muffler never gets "HOT" enough to eject -drip-  anything on the floor!!.
 I have seen EGT numbers in the low 1800s while at full throttle and running slightly rich without any noticeable change in muffler performance.  So far no one has said my muffler is louder than my first flight. 

I never expected the HP - 2 to work or anything but the Renesis - but I did not expect to see "stuff" melting and dripping out either. 

Mark - are you going to fly it again as is or what is your plan - I may want to fly over to Lockhart and watch!  I am ready for more Barbecue also!

Dennis H.

Bill Bradburry wrote:

Mark,

Did the stuff get on the bottom of your plane?  Has this affected the sound of your exhaust?  Did Dennis' muffler do this?

I noticed his muffler had a white coating on the outside like it had been hot.  Has yours turned color?

I wonder how hot the muffler gets at high power settings?  Didn't you say something about a hand held temp gage?

 

Bill B 

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle
Sent: Sunday, January 13, 2008 9:40 PM
To: Rotary motors in aircraft
 Subject: [FlyRotary] Re: What's this

OK, I can see this is going nowhere.  So I guess I'll have to tell you.   This is what came out of my new HP-2 muffler after a short 20 minute flight.  What you saw in the previous picture was the packing material MELTING and dripping out the end of the muffler.  In the second picture, you can see it oozing out of the little holes in the intermediate housing.  I was expecting it to "blow out" eventually, but I wasn't expecting it to melt and run out the tailpipe.  This just blows my mind.  Where to go from here???  Maybe I should replace the packing with titanium shavings, or lithium crystals.

Mark

 

On Jan 13, 2008 8:23 PM, <BMears9413@aol.com > wrote:

Terminator Tweety?



Start the year off right. Easy ways to stay in shape in the new year.

 


No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.5.516 / Virus Database: 269.19.2/1221 - Release Date: 12/01/2008 2:04 PM


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