Posted: 6/2/2007 10:53:15 PM EDT
| SInce generators are so noisy are theire any aftermarket muffler/muffler extension type things that one can attach so you don't have to listen to the damn things? How about some sort of field expedient home made thing that is like a big cannister of fiber glass or whatever? |
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I tried that, it didn't work. I fab'd a exaust manifold, and attached a quiet car muffler and about 5 feet of flex pipe. It seems 99.9% of the noise is just the engine itself. Running it without any muffler at all wasn't much louder. The only good thing about it is now I can leave my generator in my pole barn, close the over head door most of the way, all but about 6 inches, just enough to throw the flex pipe under. My pole barn muffels most of the engine noise. |
| As Chick pointed out most of the noise is not out of the exhaust but from the generator itself. I have found that those generators that are enclosed are much quieter to operate than those that are exposed engines. I reccomend that you bulid a metal enclosure and the put one of those Aerated brick walls around it. You know the ones where the bricks a positioned so there are spaces between them to allow air flow. I am sure some one here has mor generator knowledge just an I dea from all the Generators I have seen in use. |
| The most important thing about building a genset enclosure is to make sure that the air intake and exhaust path have a couple 90 degree turns in them to trap the sound waves. In looking at the air intake path on a Generac enclosure, the air path has 3 90 degree bends in it to keep the noise in the enclosure. |
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the inside of a sound deadening inclosure should be blanked w/ rolled insulation w/ the paperside NOT facing the genny, that way the fibers are there to absorb the sound waves. I guess if you could rig up a mechanically driven fan to cool it, like a vw boxer, you would do alright. |
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I cannot find it. There's a company that sells a kit consisting of thermostat, powered louvre and ventilation fan for mounting in a Rubbermaid mini-garden shed. A related topic of building a sound proofing shed for a generator www.grnet.com/therhinosuite/soundproof.htm stumbled across this story...stresses the importance of good ventilation for your genset  http://www.spokesmanreview.com/pf.asp?date=111903&ID=s1441614 Men jailed after haystack blaze leads to pot bust Associated Press LEWISTON -- Two men are charged with felonies after a haystack blaze led firefighters to a marijuana-growing operation worth at least $200,000. George R. Velikanje, 59, of Colville, Wash., and John A. Reese Jr., 64, of Lewiston, were arrested early Monday following the fire in the Lewiston Orchards area. Firefighters called to douse the haystack also found 200 marijuana plants and several thousand dollars worth of equipment. The plants were in a barn. A generator which powered the hothouse lights was housed in a nearby plywood box surrounded with hay bales to muffle the generator noise. Both men were charged with manufacturing marijuana and conspiracy. Velikanje was also wanted on a federal warrant for selling marijuana. The fire crew doused the fire before flames could reach a 55-gallon drum filled with gasoline, which was the generator's fuel source. |