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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
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