Don't use automotive mufflers.
Make your own  out out of Inconel or 321 Stainless.
Best not to put anything inside  that can melt
and plug up the exit.  This one has been  sawed
off. Not a good idea for anybody on the ground
that  might happen to be under it when it spits
out its  guts.

----------------------------------
This is a  fail safe muffler. If the ribs melt
and distort they are unlikely to  plug up the exit
and can be inspected by merely looking under  the
airplane.

Paul Lamar


Paul, that  was on a plane at Oshkosh, that had another muffler forward of
that exit  diffuser. I don't believe this is failsafe, depending on what the
forward  muffler consisted of, because anything coming loose would be
trapped
by the  exit bars.

These were added on to the original design, and the builders  said that it
reduced the sound some more, therefore they liked it.
Bill  Schertz
KIS Cruiser #4045
N343BS
Phase I testing

Absolutely  true but I also advocate putting nothing in the muffler ahead
of  it.

Paul Lamar


Paul, what's going on with your muffler??

Rich

Nothing. Been out of town for the last two weeks.
I hope to get caught up soon. I took a bunch of movies
in Europe so those must be edited and uploaded.

Paul Lamar