3000W Chinese Gensets Info.
professor95 wrote: EDIT ADDED 45/5/2013- When this thread started in March of 2005, I never expected to see it survive this long or amass the quantity of information that has been shared here. In...
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Bob & Cathy: I will try to describe what I did with my sound box. The box is longer than the Gen by about 12 inches and taller by maybe 4 inches and deeper by about 6 inches.
The Gen sits about 5 inches from the left of the box and I cut a hole opisite the air intake of the engine. I then put a piece of duck work pipe from the outside to the intake. I cut a hole just the size of the hot air exit in the bottom to get rid of some of the heat. On the right there is about 7 or 8 inches left in the box. The bottom of this was cut out. A divider was placed on an angle from the right bottom leaning towards the left. (towards the Gen.) This leaves an angled hollow place in the box. An air vent was cut into the right side of the box and a screened grill was placed over the opening. Inside the angle box two squirl cage blowers were installed to blow air over the top of the Gen and down the left side of the engine and going across the bottom of the Gen and dumping out the bottom on the right side where I cut the bottom of that seven inches. So the air goes from the right top of the engine across the top down the left side and across and out the right bottom. I put an elbow on the exhaust and it blows out the bottom hole on the right also. I then insulated the inside with foil faced 1 inch sound insulation from Overtons Marine.
It now runs cool and reduced the sound by a bunch. I don't have a DB meter so I can't give numbers but It is much better.
Most of the sound comes from the engine and not the exhaust but if you can find a replacement muffler that helps then so much the better.
God Luck. I hope this helps a little. It worked for me.
Gene-C
The Gen sits about 5 inches from the left of the box and I cut a hole opisite the air intake of the engine. I then put a piece of duck work pipe from the outside to the intake. I cut a hole just the size of the hot air exit in the bottom to get rid of some of the heat. On the right there is about 7 or 8 inches left in the box. The bottom of this was cut out. A divider was placed on an angle from the right bottom leaning towards the left. (towards the Gen.) This leaves an angled hollow place in the box. An air vent was cut into the right side of the box and a screened grill was placed over the opening. Inside the angle box two squirl cage blowers were installed to blow air over the top of the Gen and down the left side of the engine and going across the bottom of the Gen and dumping out the bottom on the right side where I cut the bottom of that seven inches. So the air goes from the right top of the engine across the top down the left side and across and out the right bottom. I put an elbow on the exhaust and it blows out the bottom hole on the right also. I then insulated the inside with foil faced 1 inch sound insulation from Overtons Marine.
It now runs cool and reduced the sound by a bunch. I don't have a DB meter so I can't give numbers but It is much better.
Most of the sound comes from the engine and not the exhaust but if you can find a replacement muffler that helps then so much the better.
God Luck. I hope this helps a little. It worked for me.
Gene-C
