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Ed Anderson wrote:
Ernest, keep in mind that the results you get with your sound recording may
not be indicative of what real exhaust pulse would give you. The reason
-the exhaust pulse is a Finite Amplitude Wave - and they do behave
differently in reflecting and refracting than standard sound waves. The math is not too intimidating {:>)
http://www.wikiwaves.org/index.php/Finite_Amplitude_Wave_Theory
OK. You're just making fun at my expense now.
I'd be upset if that page wasn't so dang funny 8*)
Another factor that will affect the experiment will be the difference in temperature between the test I do with PVC pipes on the bench, and the steel that is in the rotary's exhaust. I'll probably end up with five or six mufflers before I'm done, but I hear that is what you've got to do before you can be considered hairy-chested.
--
http://www.ernest.isa-geek.org
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