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On Jan 7, 2009, at 1:09 PM, Charlie England wrote:
I hope this attachment works.
It's an email from the late Paul Conner with images of his 'muffler' on his SQ2000. If you factor in 'goodness' as part of the quiet equation, Paul had it all over anything else I've heard in over 10 years of watching (& hearing) rotary powered a/c except Dennis Haverlah, & he cheats by using a Renesis. While his plane wasn't silent, it wasn't any louder than a typical Lyc and it was much more pleasing to listen to than a 4cyl Lyc (& quite a bit more pleasant than the 2stroke-like bark of a typical rotary. It really sounded like a healthy automotive V-8.
It's also pretty hard to beat for simplicity and even weight. Obviously cost a little HP, but real tuned headers + an equal performance muffler would weigh several times as much & just might drive the HP back to Paul's configuration. Run the HP vs weight gain vs money numbers....
Charlie
Folks,
Paul's engine had the Mazda exhaust manifold that shows in the pictures Charlie sent. It was not harsh or barking, in fact it sounded a lot like a small v-8. I never got to hear it in the air, but I was there for some of the ground runs Paul made. And of course I ran the engine on the back of my pickup after his accident.
Bob Tilley
Albany, Ga
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