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Adam, as an engineer you have the acoustic theory bang on. Clearly this is a work in progress and you need to monitor the interior generator compartment temp and tweak the air flow if and as required. One concern I have is the space between the generator exhaust and the next compartment which might result in oil and carbon buildup in the generator compartment and on the generator itself.
Agreed, I think attaching an exhaust flex hose to the unit and running that hose sealed through the first wall would do wonders for both temp and air quality. Maybe some fans on the intake side to increase airflow to the genny as well
Great build. I have a new generator and will be looking to make a similar box in the next week. Luckily I have most materials on hand, including two extractor fans. Thanks for this video.
So i wound up taking out the chamber walls and now its just the fan blowing air in and duct fans blowing exaust out. Works great and is still plenty quiet.
Thanks Adam for your efforts. I'm in the first stage of setting up a generator box for a larger genny tho. Your idea of setting up walls for the hot exhaust to travel thru was great, they are essentially acting as baffles. But I think when I set my box I won't have as many partitions and I would include an intake fan to force cooler air in. Thank you for the idea. I would appreciate it if you could list the materials that you used with links to where they can be bought. Again many thanks.
Pretty good idea. The fan is a great idea. I have a 7000 watt genset and it is loud as hell... I'm exploring ways to quit it down. My genny is a lot bigger than this so I think I'm going to have to custom build a box for it. On your set up however, I'd be worried about the cooling. My thought would be a fan that could draw more volume airflow. But I think your idea is excellent and you did a fine job. I was also trying to figure out a way to fabricate a muffler system to bolt on to my genset to replace the factory muffler... Thanks for sharing your idea! TL :)
I have read a lot of negative comments, anyway, I think you are curious and crafty . Everything is perfectible when you are a protagonist. Shame on the keyboard critics. Congrats and good luck with your very interesting project !
Explain how the engine is supposed to keep cool? I work with engines of all sizes. Heat kills an engine pretty fast. keeping the actual engine in a box with no venting is going to shorten its life a ton.
What makes you say, keyboard critics ???? I learnt the hard way, just as Adam is learning as well. However I'm more than happy to point out MY MISTAKES so Adam does not repeat them.
I agree! I think people are either jealous or just pessimistic assholes. The guy is doing something that might not work well but he has the power and free will to work out all the failures until he gets it right. I mean how else do we get technological breakthroughs without good through real-time trial and error? I like this idea. Patent that shit and put it on the market and those same whining keyboard critics will be the main ones buying making you rich.
So i used it all summer and your right. I did take out all the chambers. I just have one big fan blowing air in and 3 dryer duct fams blowing it out. Ill post a video soon.
Love the project. Correct me if I'm wrong but I believe I saw 3 exhaust fans in the rear exhaust compartment creating plenty of air flow through the generators intake fins and the generator has enclosed sides so there is an air intake end and an exhaust end so theoretically everything should stay cool enough to run effectively. Maybe the generator chamber would have benefited from being lined with the egg crate foam and possibly the whole box could be a bit bigger to allow for a bit more circulation but I like it. nice job
It's one thing to put an inexpensive generator in a DIY box, but I wouldn't put my Honda in this box as it stands right now. My feeling is that a lot of things are correct as well as wrong with this box. There doesn't even seem to be a hole in the box for the extension cord to pass through. All that said, this generator box is infinitely better than any generator box I have ever built since I have not built one yet. Cheers
You gonna have one sooty exhaust side. I do however like your baffle work. It just needs more room to breath. Maybe extend the exhaust out? Thanks for sharing.
Adam do not listen to the nay sayers. This was a great first attempt. The folks who can only make nasty comments have generally never designed and built anything themselves. I could go into a long list of things you should have done differently, but I am sure you have figured most of them out yourself by now. I was a "rocket scientist" with an MS in Electrical Engineering for 35 plus years and I can tell you from first hand experience that those who have never designed anything are always the quickest to poke holes in other peoples design. Ignore them. They are jealous.
I just commented on another video about having no ventilation for the motor. Great idea with the fan. I'm wondering if zigzagging of ventilation chambers are necessary for decreasing the sound. Did you try it with the air going straight in and out? A remote temperature would be great as I see someone else suggested. Please do a follow up when you use it for a while.
hi adam, your box is the best one i have seen , and i plan to eventually make one for myself , when you say you took the internal walls out, did you need to do that for overheating in summer? im trying to work out why the walls would make it hotter
Adam: I will suggest you downloading one of the many sound meter for your cel that will give you a more exact measurement of the sound instead of just "it sounds louder or not" and put a certain distance that can reproduce the normal working condition of of the generator. Somebody was concern about the working temperature of the equipment inside the box. Maybe is something to rethinkit in your update. But still I think that your project was very good.
Any issues with the generator running hot - did you use a temp gun to determine for sure? Like the offset air intake/output holes - saw that in a soundproof room build.
That is an amazing idea, I will build me one with just more air flow even its a little louder I think the point of making it so quiet while looking nice worth the effort.
So depending on the tempature where your using it you might want to watch my newest video. It has more airflow and a reserve fuel cell so it can run all night. Im taking it to vegas this summer so ill post a video of it in action in the hot dezert at the WSOP.
Temperature is a big concern. We sound proofed our truck topper and we adequately ventilated our 7500kw generator to run inside while connected to our RV. Today, after about an hour into the test run, the heat from the generator and the 80 degree Florida weather made the fuel expand in the tank and start hissing. We ended the test, allowed the unit to cool, and are now searching for other solutions. We are also headed to the Desert Southwest and would like to enjoy Air Conditioning while having a quiet night's rest.
Pretty clever, but I think the makers and designers of that generator would be horrified. Don't let them see this if you need any warranty work. Good luck and thanks for the video.
I do know an engine usually needs air to stay cool or it will over heat eventually, nice creation though find a way to shove a welder in their and cooling fan u got a good deal
I like the idea I just feel like those litte fans wont me the neede air volume. Maybe an automotive fan can be hooked into the 12v port on the intake and exhaust for more flow.
Line areas with Asphalt composite shingles to further assist in sound dampening. Maybe some muffin fans to aid in cooling and CFM air flow internally? ;)
for the foam, its recomended to use FR (fire retardant) grade type, insuflex is 1 good choice, its use for soundproofing, heat insulation and its FR rated.. Normal foam will only ends with another disaster. The air circulation need to be improve as well...
This test does not show a regular generator noise level without the soundproof box, This small generator is already low volume sound BEFORE being placed in the box. Suggest trying this with a 6500 watt.
You should have the fan blowing the intake air directly on the generator. This will keep it cooler by forcing the hot air out which works better than sucking the air out.
I go to Burning Man where daytime temps typically reach 100*F...in the shade. I don't think this or any baffle box design would work without overheating the gen.
I got a Bigger Gen and just put inside my Insulated Shed that is Well Vented and its nice and Quite that I had to install a Monitor gauge to it and mount it Inside my Garage to keep tabs on it.. I've had to use it 4 times in the past 2 yrs when we Lost Power from Storms for ave of 2-3 hrs.. But If you want to Power Major Appliances? you have to Put out 2kw's and with a 3kw surge.. ( Expecally a Blower Motor on a Furnance to keep a House warm if in winter..) If you can? Get a nice looking 5x7 or 6x10 Shed 1st. add a few extra Vents on all 4 sides and a couple of Roof Vents , Insulate it whit some Sheets of 2"-3" Foam Boards and to the sliding or Opening doors.. Be Better off...
Sitting on the tabe sets up a vibration. Sit it on a foam pad on a solid surface, floor or ground and it will be even more quiet. Good video. Im from farm country. Cant even emagine visiting or living in those conditions
The design need a very strong fan to force it on that foam, still the heat is seeking out, not enough circulation of air suffocating your generator. Just design an A frame open at the top and open at the bottom, it will half your noise or better.
You know what would help if you have a piece of rubber on the bottom like rubber mat and the first two panels closest to the generator at the top closer at the bottom further almost like sides of a pyramid it will make the sound bounce down into the bottom rather than Ricochet around
I have a very similar set up I would definitely open up the main chamber a little bit for airflow and exchange that fan for a radiator fan you should have a DC plug on your generator to power your radiator fan
I think people are either jealous or just pessimistic assholes. The guy is doing something that might not work well but he has the power and free will to work out all the failures until he gets it right. I mean how else do we get technological breakthroughs without good through real-time trial and error? I like this idea. Patent that shit and put it on the market and those same whining keyboard critics will be the main ones buying making you rich.
Three improvements just my opinion ,,, ,,, 1. 110 volt fan on one side and a 12-volt fan on the other side redundancy and Cooling and bigger fans ( don't worry about running big fans the fan blades will act as a muffler to the noise just like when you as a kid would scream or talk totally changes the sound ,,,2 a fire extinguisher plumbed into it and you could use a piece of solder for the trip wire ( kind of like fire doors when the piece of solder melts the fire doors closed) in this case if the solder melts it pops the fire extinguisher plumbed the cabinet,,,,3 I would find me some type of a thermal switch you'll have to experiment 200 degrees r300 just experiment when the cabinet hits a predetermined temperature it shuts down the motor,,,, and anyway since his videos a year or so old can you tell me how it worked as is thank you really like your idea nothing's impossible
I would have trued useing sheet aluminium instead of wood. But it doesnt matter the issue I see is the main compartment with the generator housed is wood and foam. The foam is ok but you should try to just muffle the exhaust. Instead of the entire unit.
Is that because you are an expert or just because you think? Does generac, the largest generator company, put their units inside an enclosure? You need to call your fire marshall buddy and tell him generac, the largest generator company, is in violation.
Think i would try to cut some of the bottom of box out. Most of the time ppl will be in a campground with dirt or grass that the generator sound will absorb & that will give the generator more airflow. can also angle some junk plywood (OSB works best) down & away from box bottom leaving some air flow & deflecting sound to the ground. If you make a fortune on my idea i want a cut
I see a catastrophic failure in your future...... I laughed when you said to your lady friend, "do you see these exhaust fumes" ... cracked me up, great video ..
It's too bad there is not A water cooled version of A compact generator. I wouldn't mind the added hassle of setting up the radiator and fan if it meant i could stealth camp with electric.
Yeah I'm going to make myself a box for my generator and I do have safe and sound roxul insulation that I purchase brand new unopened from someone for a fraction of the price. And I'm going to pick up a couple of fans that's going blow air and hopefully on both sides of the machine exhausting hot air through the top
@@TheRigChef That's a great plan. Make sure one fan pulls air in the box and the other fan pulls out air; preferably not in a direct line of sight so as to ensure good circulation. If the fans are at the same level it will create a direct flow and leave the rest of the box air as dead space. So put one fan at the top sucking out hot air, then the other fan at the bottom (not line of sight) pulling in cold air.
