Inverter generator sound deadening box demo

The 12V temp switch that I added to the inside of the generator will kill the engine within 10 seconds if the fans or power supply fail. I used a 9V battery and the temp switch still functions perfect. I just need to unplug the battery if the generator won't be used for a while or the 9V will be dead next time.

[@OGxBUCCWEET]

*Best one I've seen so far on KZbin.* Nobody else seems to understand the theory of channeling and chambering the air intake/exhaust ports. Sound waves likes to travel in a straight line. Once you disrupt that straight line, you create a ricochet effect with the sound waves. And with the sound dampening material you have in there, it just absorbs the trapped sound waves. For the purposes we're looking for, you have a significant decrease in decibels using this method. I learned this building speaker boxes back in the day and you used a VERY similar concept. The box design by itself is excellent work, and the temperature switch made it fucking genius! Slap a couple of coats of deck sealer on it for wet weather and some wheels and you're really in the game. I wish you had the plans drawn up. And by the way if anybody is planning to build this, the best wood should be as non-resonant as possible. Generally, that means either dense plywood (birch ply is good) or MDF fiberboard. 1" thick. You can't lose!

[@francishwang5632]

I'm making one as well with a large byzantine path for the air, and a minor correction to your comment is that these baffle boxes should have two kinds of materials, sound-absorbing and sound-damping. You hear both used interchangeably, but "damping" materials are less to do with noise and more to do with vibration. By combining the two, you can cut down the pressure wave. The OP should try combining both along his air channels and should notice an even further quieting of the system.

[@jesse7055]

love it...im gonna build one. hopefully it doesnt overheat on 42°c days tho.

[@rxonmymind8362]

Very well done. Like a computer box only denser. Bravo & thanks.

[@reddyuda]

Great enclosure design, if you are building a baffle enclosure this is absolutely the best video to reference. Only thing I would add is a thermometer system, so you can check on actual run temperatures easily during an outage. A basic wireless "weather station" or wireless outdoor thermometer would probably be cheap, and work well enough depending on how far away your genset is

[@donovanmills6162]

Best generator box I've ever seen designed. You should really consider on getting it patent. These forsure will sale lots of people want these quite boxes and it hasn't been invented yet.

[@reddyuda]

Great enclosure design, if you are building a baffle enclosure this is absolutely the best video to reference

[@rrlightner]

Congratulations sir! You are the first one to succeed and have done the impossible!! Bad ass!

[@22980Ryno]

Thank you Nathan, I did do some temperature testing. The numbers vary wildly depending on where around the generator you test. Obviously, the temp is much higher near the exhaust side. I ran the generator for over an hour at 3/4 load on a 80 degree day and found that I could still comfortably touch the plastic case near the exhaust. This was good enough for me since I only use the generator/box together at much lower ambient temps and much lower loads. I used this set up this past hunting season running the generator in the box for a total of 45 hours. This included 3 overnight runs in late November. Temps ranged from 55 to 10 degrees. I had zero issues.

[@iberiuspred4906]

I think that if a rough / tiled surface were applied at the opposite end of the ducts, an additional noise reduction would ensue. I also think that the mass of the materials in the box plays a role in the noise dampening. I would also experiment with resonance frequencies too. Let's say that we have a resonance frequency measured. Then we added a box with the same resonance frequency as the measured space. That would result in a noise cancellation. I checked it out and it is called a Helmholtz resonator.

[@22980Ryno]

Thank you, I bought both fans off eBay. They were aftermarket 12V radiator fans. I can't remember the exact size or cfm, but they were about $25 each. The tube from the exhaust is just some flexible metal conduit. The temp switch is another eBay cheapo piece from Hong Kong. works fine for cutting the engine off before major damage occurs.

[@jessewingboyz62]

22980Ryno D

[@Denniss7420]

Buy radiator fans from a Kawasaki Ninja

[@tristanschaper281]

What was the temp cutout switch that you used? What temp is it rated to cutout?

[@Honestandtruth007]

This will work for Portable Generator..... only need portable a/c to help cool Down during Summer 👍👍

[@CraneTech101]

Nice box. I was thinking of building a box with similar channels but not necessarily in line with the exhaust. Another thing is I plan to leave the bottom open and direct some of the noise in to the ground. Saw another guy just lay plywood angled towards the ground and it seemed to work well.

[@mastard780]

Nice job with the baffling and chambers.

[@agentstarling9998]

Brilliant!!!!!! This is the best silencer I found. Please make a how to and you will get a million views!

[@divebarcasanova7610]

I like it. Dryer vent with sound deadning material inside it it the way I'll change it.

[@cakeca12]

Could you post the plans for building the quiet box. This is the best one I've seen. You should be very proud...

[@22980Ryno]

I'm sorry, but I don't have any plans. I built the box before I purchased the generator and figured out what the inner dimensions were going to need to be based on the posted dimensions of the generators that I was considering. I kinda just winged it from there. Thanks for the complements though and good luck.

[@cakeca12]

Thanks. I hope I can be as successful as you were with your box....

[@BadBiden]

I don't care what anyone says. These boxes are going to make these generators run hot as hell...

[@burhanomarabdulle564]

THAT LOOKS LIKE A OLD FRIDGE... GREAT IDEA

[@KPlainfeather08]

It appears to be well made. Westinghouse recommends a 5 hour break in period at 50% load. The included picture was taken during this break in period. I tested it with gas and then propane, and it ran well. I haven't yet tested it under full load, but will update this review if problems are encountered.

[@22980Ryno]

This spring I plan to spray the whole box with Plasti-dip. This should prevent rain from soaking into the wood and ruining the box. The biggest draw back to this box is the weight. It weighs about 180lbs, it's tough to move and that's why I added wheels.

[@firecloud77]

Before painting any wood that I use outdoors I "prime" it by painting it with *Titebond 3 waterproof wood glue*. It creates an extremely durable, tough, waterproof coating. I buy it by the gallon at Lowe's. I usually use a 4-inch roller to apply it.

[@lunchie80]

The only improvements would be possibly some absorbing foam inside intake and exhaust baffle sections. Bitumen tape/flashing/deadener only adds mass to panels. You could also consider a diffuser or cowl to direct sound down over the exhaust pipe exit but not sure how effective that may be. Otherwise a clearly effective design and far better than a lot of the poorly thought out boxes on KZbin. With the intake fan blowing straight over the generator, it probably runs cooler than open air too.

[@lordvader702]

Thanks this is what I was thinking type of deal but didn’t seem to do a whole bunch for the work. It would have been nice to a noise meter during the video

[@thondupandrugtsang]

I agree, it's the best so far.

[@songreosmenep]

The best! Very impressive piece of work. Can I get the plan to build this like yours...Thanks.

[@JodBronson]

That is actually pretty good !!!

[@chadmitchell8368]

Great project and thanks for sharing. Where (what) did you use for the temperature switch, tube from the exhaust and fans? Anything you would change at this point? Cheers, C

[@batvette]

Chad Mitchell NAPA sells silicone heater hose rated to around 350-400 degrees. around 15 bucks a foot for the size i used which was about 1.125 i.d.? i preferred hose over any kind of pipe no danger of cracking the exhaust manifold.

[@cathybaby4607]

Cool I needed ideas my generator room is 4 x8

[@ptock2]

You are a genius!!

[@BarryBright2021]

Looks like an awesome box! I'll soon being trying to make something very similar. have you noticed how much the temp increases in the box with this design?

[@22980Ryno]

I did not really build it to be utilized in the summer and hot temps. I would not be concerned about using it in hotter temps for short durations, but I wouldn't want to run it for hours this way.

[@superbmediacontentcreator]

Can you please tell what the size and name is of the hose you used on your exhaust...???

[@Hardwarenutz1]

Nice Job!!!

[@JesseKlaus]

Where did you get that exhaust line? I'm building one of these buggers.

[@22980Ryno]

Jesse Klaus It's just the inner metal shielding from liqui-tite flexible conduit. I removed the rubber insulation and used that.

[@cathybaby4607]

Is convoluted foam better than styrofoam

[@michaelme3836]

How much to build me a baffle box for a 3400 dual Champion generator. I want to put one on my semi truck to use it as my Apu system

[@sadumanylmaz5998]

Hello.Is it possible to be used in a Van? If we consider noise and flamable.

[@creativereinvestor]

Air cooled and does not overheat inside that box, I wonder if they supposed to operate at higher temperatures

[@lunchie80]

creativereinvestor thats because of the fan.. air is constantly moving THROUGH the box.

[@chrisphillips3354]

what is the electric looking box close to the exaust area?

[@22980Ryno]

That is a Sola industrial power supply. It converts 120V from the generator into 24V. I have the fans wired in series so the voltage divides into 12V for each fan. These can be found used on eBay, search for (Sola SDN 10-24-100P). The 10 in the model number means 10 amps. You will need one rated at at least 10 amps to handle the start up of 2 fans that size.

[@OGxBUCCWEET]

Hey 22980Ryno, Great build by the way. Just curious of the need to run the fans on a power supply in a series vs parallel. The 12v outlet couldn't run them in a 12v parallel configuration? Is it a breaker or amperage issue? I'm only asking because I'm considering this build and I want it as simple as possible without compromising performance.

[@22980Ryno]

OGxBUCCWEET I wanted to power the fans through the 12V receptacle on the generator, but my research indicated that Champion really only intended it to be used as a battery charger. I didn't want to risk damaging the generator and I really doubt the output would be enough to handle the in rush current of those fans at startup. I would have preferred the simplicity as well, but I decided to use the right tool for the job. Good question though.

[@batvette]

OGxBUCCWEET dont know about your genny or his champion but my harbor freight predator 2000 says you cant tap the (12v, 8amp)DC output at the same time as the AC output. unless you need every bit of the AC power for something else you can find plenty of ways to run fans. like use 110vac fans... 12v fans thru ac-dc power supplies...myself I would lean toward blowers over fans as they are better at making pressure thus evacuating a closed space. I have made enclosures similar to this for shopvacs and electric air compressors. they didnt have the tremendous heat buildup of an IC engine though. currently dicking around with running that predator 2000 inside the back of a jap suv (honda passport) for stealth camping. it does work with the exhaust piped out the floor and a fan and a blower. it needs a little refinement.

[@OGxBUCCWEET]

Chris Phillips Ok... that makes more sense. Didn't know that you were only limited to using 1 power source at a time. I run a DuroMax Side Kick XP2000is. Works on the same principal as the other inverter generators out there. Definitely appreciate the reply.

[@thehulk6940]

Hello. What would you charge to build me this for my honda eu 2000I Inverter generator?

[@alexandrelechat2005]

Good helper

[@Ranger5004]

we need a diy guide plz!

[@3DEditor]

Still very loud

[@missnickelbee7789]

A little bit of explanation would be great...

[@cskye6529]

nOW THAT ONE WORKS. iMPRESSED! iT'S ABOUT TIME SOMEONE MADE ONE THAT WORKED. tHAT'S A DAMN NOISY GENERATOR TOO. wHAT ABOUT INTAKE PORT AND COOLING. oops capsl;ock was on. not intended. typing with one hand.

[@bmxinfool505]

Are both fans blowing in? Or is one blowing out?

[@22980Ryno]

One in, one out. Exhaust side of the generator blowing out.

[@stupidusedrnames]

Wow, nice. Any chance you sell these? I'm an old grandma and don't know how to build things but really need this for my tiny house. Thanks,T

[@22980Ryno]

I appreciate your kind words. However, the are two reasons that I have no interest in building more of these boxes. 1. Time, building this was a very time consuming project. My career requires me to already work a lot of overtime and I have 9 and 7 year old boys in sports that I help coach. 2. Weight, unfortunately my design weighs nearly 200 lbs. This makes it extremely expensive to ship to anyone not local to me. It probably could be effectively built with lighter/better materials, but again more cost and time would be needed. By the time someone paid the cost of materials, my time, shipping, and the generator itself, they would be better off getting a Honda or Yamaha without a box. I only shared the video of my design to help others who want to try to build their own.

[@stupidusedrnames]

22980Ryno Ya, I knew it was a long shot! Your priorities are right on, they grow soooo fast!

[@rodolfopimentelv]

felicitaciones donde se pueden conseguir planos

[@traviswwilliams7171]

does this ger very hot in the summer?

[@williammolchan3883]

Does it overheat ?

[@22980Ryno]

No, but as stated from before, I only use it for cold weather camping.

[@MegaTriumph1]

Its better I bought a water cooled generator. Because I want as quite as I can get it also.

[@cathybaby4607]

ain't the foam flammable

[@22980Ryno]

Yeah, I'm sure it is. So is the plywood I used to build it. This is why I installed a temperature switch which cuts off the generator if it gets hot in the box.

[@cathybaby4607]

Cool

[@mrose9566]

the honda 3000 out of the box sounds lower then that generater in the box.

[@rxonmymind8362]

Ah, but imagine that same Honda inside of THAT box you dismiss. Tisk, tisk. Stealth yes? It's going to be gobsmacking awesome.

[@thenewaftermath]

I bet that this generator is only putting out 45db in side that box.

[@steve8189]

No DB results or comparisons? This video is just like all the others, not very informative

[@chrisphillips3354]

what is the electric looking box close to the exaust area?