Well, Yvon, given that my inserts are apparently 10-12 inches closer to my
exhaust port, I'll bet my inserts are in worst shape.  I had thought it was
my imagination, but my exhaust which had been quieted (relatively speaking)
by the inserts, had recently seemed to be getting louder.  Perhaps as a
result of the insert's deterioration.

I've been thinking about making up an insert out of stainless steel with a
couple of more disks, would appear to be fairly simple to do as stainless
plate is fairly easy to cut and punch with the right tools. But, alas, I do
not weld.

I'm about to depart on a 2000 mile round trip to Louisiana and then on to
Florida for a flyin in Jan.  I'll be leaving on the 3rd of Janurary and
returning around the 14th.  Then I will take my exhaust system apart and
check on the inserts.  I'll let you know the results.

Best Regards

Ed


----- Original Message -----
From: "Marvin Kaye" <marv@lancaironline.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Sunday, December 29, 2002 3:19 PM
Subject: [FlyRotary] Re: ROTARY POWERED ZENAIR ZENITH-EXHAUST


> Posted for géraldine berger-yvon cournoyer <geryvon@videotron.ca>:
>
> Good morning Ed,
> I should have mentionned that you gave me the idea for the exhaust sound
> suppressor inserts. Sorry I forgot to mention this.
> I have to say that the rotary exhaust is even more powerful than I
thought,
> especially since I lenghtened my exhaust pipes to 31" minimum.
> Let's see...the shortest pipe is 31" long. The inserts are ~7" long and
they
> fit into the collector, up to its crotch?. So the closest insert is about
> 24" from that exhaust port, while the lower insert is about 28.5" from the
> other exhaust port.
>
> >>  Homepage:  http://www.flyrotary.com/