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Goald | 10-17-2009 01:14 AM
Quieten the generator... I am looking to purchase probably one of the honda generators after having done a bit of research however, they do seem very loud for apartment living.. Most here do not live in such surroundings which is great. (and some will have strong opinions about why living like that is stupid- but please save it) How could you reduce the noise pollution from the generator?.. Surely covering it would prove to be unsafe?

Nomoss | 10-17-2009 01:20 AM
Re: Quieten the generator... Pipe the ex in to water. It works.

Glass | 10-17-2009 06:42 AM
Re: Quieten the generator... Quote:
Originally Posted by Nomoss (Post 1976948) Pipe the ex in to water. It works.
down the toilet?

Jimfrancisco | 10-17-2009 08:21 AM
Re: Quieten the generator... A couple of car mufflers will work a treat - I'm a generator nut and that's what I normally use. If you were in a house I'd suggest burying an old oil drum, filling it with loft insulation, and directing the ehaust into that. But you aren't, so I won't.

hoarder | 10-17-2009 08:43 AM
Re: Quieten the generator... Panels of Hardee board can deflect the noise in another direction but be careful not to restrict cooling air to the engine. Get the heck out of that apartment and move out in the country!

Jimfrancisco | 10-17-2009 09:28 AM
Re: Quieten the generator... Quote:
Originally Posted by Nomoss (Post 1976948) Pipe the ex in to water. It works.
Makes it quieter, but reduces the output of the genny considerably. That's why normal outboard engines run the exhaust below water, whereas racing ones run them out of the water.

RaccoonRiverRadical | 10-17-2009 11:09 AM
Re: Quieten the generator... Quote:
Originally Posted by Goald (Post 1976941) I am looking to purchase probably one of the honda generators after having done a bit of research however, they do seem very loud for apartment living.. Most here do not live in such surroundings which is great. (and some will have strong opinions about why living like that is stupid- but please save it) How could you reduce the noise pollution from the generator?.. Surely covering it would prove to be unsafe?
You shouldn't run the generator inside your apartment anyway. I have a Honda 1000 in an apartment, but it goes on the porch with a cord runing under the door.

TTAZZMAN | 10-17-2009 02:14 PM
Re: Quieten the generator... look at the honda INVERTER generators i think they are around 59db which is very quiet they are very fuel efficient also because they run the rpms required by the load up to 15hrs to the gallon, and very lightweight http://www.wisesales.com/EU2000iACompanion.html

Bill843 | 10-17-2009 10:03 PM
Re: Quieten the generator... Two tricks I've heard for quieting small air-cooled engines: --If you have a generator that has a side-facing exhaust, you may have noticed that the noise is usually greatest on that side. The first trick is to make an exhaust pipe extension that faces straight up, and then put the generator somewhere that it is not covered by a roof. Much of the sound will go skyward. To prevent rainwater from entering the engine, you may need to make the pipe like a "sink trap" that goes down first and then goes up, and drill a 1/16" hole at the lowest part. This makes sure that no rain water can get into the engine through the open exhaust pipe, but still directs most of the sound upward. They make the mufflers so that there's no easy way to attach an extension tube, however. You usually need to be able to braze to do this at all. --the second is to stick pieces of high-temperature silicone in-between the heat fins on the cylinder. You get some high-temp silicone hose and cut it into pieces about 1/2" x 1", fold them over, and then stick them into the heat fins in two rows only, on opposite sides of the engine. Place them where they will interfere with air circulation through the fins the least.... Every time the engine fires, all those heat fins ring like bells. The silicone will greatly dampen the noise from the fins. -end-

scyth | 10-18-2009 01:57 AM
Re: Quieten the generator... Ummm - 'Cause I build boats, all the gennys - 65 to 99 Kw - Come with a sound enclosure. They are very sophisticated, and pretty, and expensive. However, you can accomplish about the same Thing with 2" rockwool and plywood. Running the exhaust of small gasoline generators Through water concerns me, because of backpressure. Likely to hurt both performance and the engine. scyth

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