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----- Original Message -----
Sent: Saturday, December 20, 2003 11:48
PM
Subject: [FlyRotary] Re: Emailing:
Ed-Klepeis
I was there too, but I thought it wasn't a valid test since
there was a metal "wall" just aft of the outlet, and all sound drummed and
echoed off that wall. I have no way of quantifying the effect of that
barrier but I intuit that it was substantial, so I have to pretty much ignore
that test as far as sound suppression goes. I do like the compact size
and shape and hope it works out really well.
Waiting for another shoe to
drop .... Jim S.
kevin lane wrote:
I was there when this prototype was
first run at Tracy's. I didn't have a decibel meter like Paul, but
then I didn't need one, it was very loud and seemed to have no
muffling effect. based on its small size and no innards, it would have
been remarkable if it did have any effect, actually.Kevin
Lane Portland, OR
e-mail-> n3773@comcast.net
web-> http://home.comcast.net/~n3773
(browse w/ internet explorer)
…..also this principle is
used to reduce sound effects in
the exhaust outlet nozzle by routing cool air around the hot center
(reduces the ripping noise quite a bit)……..fwiw. So maybe it will work on
the rotary…….
I talked to Ed Klepeis about
it on the phone this week. He said that he is awiting testing from Mr.
Bass, and that the noise level would be addressed. I mentioned to him that
in the 60's on motorcycles, we installed the "salt and pepper" exhaust
silencers on our bikes, and they worked well. Very simple. Mounts to the
end of the exhaust, and just has several holes like a salt shaker
cover. They also had inserts that slid into the end of the exhaust
pipe, with swirls that did an effective job. Of course the inserts would
probably have to be inconel or ? The compact size of this
thing is appealing to me. Paul
Conner
--
Jim Sower
Crossville, TN; Chapter 5
Long-EZ N83RT, Velocity
N4095T
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