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wrjjrs@aol.com wrote:
Earnest,
I believe that the SuperTrapp muffler is an example of a band gap device and it worked well, if properly tuned.
I think the large block idea has merit too, but you will have to allow enough thickness to prevent the tubes that see the exhaust first to fight the harmonic vibration and heat. Different size diamonds in the exhaust stream might also help fight harmonics.
Bill Jepson
I haven't given it enough thought to have an actual plan, other than a canister with tubes oriented to allow a flow of cooling air.
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