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Date: Mon, 14 Jan 2008 11:08:48 -0500
From: Finn Lassen <finn.lassen@verizon.net>
Subject: Re: [FlyRotary] Re: What's this
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Although the melting of the insulation material is interesting, have a 
look at the holes in the center cone. My guess is that after a few more 
flights it will be gone and the carefully engineered "conversion of 
sound into heat" will stop melting the insulation material (if not 
already gone by then).

I insulated the bottom of the fuselage from the "muffler" by sandwiching 
FiberFrax (from Aircraft Spruce) between the fuselage and very thin 
stainless steel stock pop-rivitet to the skin.

Finn

Mark Steitle wrote:
> 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
>