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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OhhWell wrote:
I found that the interlocking edges work just as well for creating a 3d cube as they do for a 2d mat. I made 3 walls and a roof. I put it over the genset with the open end being the exhaust end (of course). Holy cow that was a huge difference!
Yes, many of us that have an open frame synchronous Chinese genset have fount this to be true. One company, SuperGenProducts offers a GenTent that is ready made to provide the same noise reduction. I have even used an old cardboard box and 1/4" foam panels as used behind vinyl siding with great success. There are videos with dBa test somewhere on this thread.
One BIG caution and rule to follow - A fan should only direct air into the recoil starter opening. Placement anywhere else will disrupt design air flow and actually make the generator run hotter.
You must maintain a few inches of opening all around the bottom of the generator for cold air to flow into the enclosure.
The point of the highest forced heat exhausting from the generator (other than the muffler), or where both engine and alternator heat combine, is underneath the generator where the engine and alternator connect. You will note an opening here where the forward cooling fan for the alternator resides. Make sure this point is not obstructed.
An opening over the fuel tank filler is a must for both fumes and heat venting. I like to use one at least 4" round or square. You can make the opening into a smoke stack of sorts to help reduce noise from that port - but this is seldom necessary.
The end of the alternator - you know, the round finned thing, MUST have a cool air supply. If you obstruct this end you will soon lose your AVR due to high heat - not a good thing to do. Make sure you have an unobstructed opening for the end of the alternator that is not subjected to recirculating hot air.
Lastly - the heat from the muffler will melt plastic, rubber or similar materials placed in close proximity. Be sure your rubber mats are not subjected to this heat. Maintain at least 8" or more of air space from the muffler shield.
Happy Camping!
