[SEL] Small Engine Muffler

[Andy Glines]

I need to build a muffler for my 6 HP Wisconsin.  The goal is to be as quiet 
as is practical.  This engine is on my Gard'n Mast'r tractor that I want to 
drive at shows.  I want something that I can talk over while its running.  
Exhaust is 3/4" pipe.  Who has design tips?

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