Mailing List flyrotary@lancaironline.net Message #50862
From: Ernest Christley <echristley@nc.rr.com>
Subject: Re: [FlyRotary] Re: Tangential muffler
Date: Mon, 12 Apr 2010 09:30:20 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Mark Steitle wrote:
Ernest,
 
Yes, I can inspect it by looking up the tailpipe with a borescope.  I can also look in through the three inlets.  Initially I tried drilling holes but soon realized that this was futile.  That's when I turned to the side grinder.  Material is .065 inconel and is supported on both ends.  If it starts coming apart I can cut the ends off and try something else.   Mark
If you need a borescope to inspect it, there's no way you're going to get a tool in there to round out the sides.  Keep a close eye on those slot corners.  The worst case would be a chunk coming loose just enough to bend over and clog the exhaust.  Mistral's  test pilot is reported to say, "That sucks."
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