How to Build a Generator Quiet Box (DIY) | Ultimate Stealth Enclosure
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- เผยแพร่เมื่อ 4 ก.พ. 2023
- Want to power your home with a generator but don't want the noise? I'll show you how to build your own DIY quiet/stealth box. Complete parts spreadsheet: cityprepping.tv/3wYBqpi ... Download the Start Preparing! Survival Guide here: bit.ly/3xWhVwZ - start your preparedness journey: bit.ly/3xZhWlY
Some of the parts used in the video:
* Generator: amzn.to/3fVX3kX
* Shed: amzn.to/3YnKShE
* Blast gate: amzn.to/3tfETxA
* Attic fan (I would recommend a bigger one): amzn.to/3WIBy81
* Exhaust heat wrap: amzn.to/3DWa6uF
* Flex exhaust pipe: amzn.to/3UndAh2
* Muffler tailpipe sealer: amzn.to/3G0HkvN
* Metal zip ties: amzn.to/3RAQSBo
* Complete parts spreadsheet: cityprepping.tv/3wYBqpi
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Website: www.cityprepping.com
#diy #howto #generator
Complete parts spreadsheet: cityprepping.tv/3wYBqpi ... Download the Start Preparing! Survival Guide here: bit.ly/3xWhVwZ - start your preparedness journey: bit.ly/3xZhWlY
Some of the parts used in the video:
* Generator: amzn.to/3fVX3kX
* Shed: amzn.to/3YnKShE
* Blast gate: amzn.to/3tfETxA
* Attic fan (I would recommend a bigger one): amzn.to/3WIBy81
* Exhaust heat wrap: amzn.to/3DWa6uF
* Flex exhaust pipe: amzn.to/3UndAh2
* Muffler tailpipe sealer: amzn.to/3G0HkvN
* Metal zip ties: amzn.to/3RAQSBo
* Complete parts spreadsheet: cityprepping.tv/3wYBqpi
Hemp fireproof blocks as well bud😘Aģape
I remember reading a book on soundproofing when I was a kid. And they said the best way was to build a room inside of a room.
Look at how quiet your little setup is, imagine if that little setup was inside a tool shed.
Obviously you don't need it that quiet, these people were making recording studios
You left out the self driving nails at 11:15.
@@DaedalusHelios Good point! I have almost finished fine tuning my shed, a Suncast BMS4700 that houses a WGen 12K DF generator. I am no engineer or had any experience building or modifying something for a specific purpose. I did go to Lowe’s & Home Depot and bought large L-brackets and attached them to all of the shed walls and installed the foot of them through the shed floor into a 6” slab with concrete bolts all around the bottom of the shed walls. Also purchase two steel beams cut to the width of the inside of the lt and rt walls to reinforce the rigidity of the walls. Thinking of reinforcing the corners that join the rear walls to the side walls as well in a vertical way if that makes sense ( after all not a engineer here) So just had a freeze here in San Antonio and so far so good.!
I'd like to see screen/rough mesh on your outside wooden box! If wasps build in that, their nest will obstruct airflow...🇺🇸 😎👍☕
Man, you really be going above & beyond for your viewers. Been watching for a while now.. you're a modern day hero man, keep it up!
you can tell he's protecting himself and family .
thanks!
@@CityPrepping Can you tell us what is the db Sound Level ❓❓❓
Great build!
Pro tip: When caulking the vents on the outside, only caulk the top and sides. Do not caulk the bottom. If moister does find a way in around the top and sides, it will have a means of escape at the bottom and will not become trapped.
Nope, that's only when you're worried about rot - plastic doesn't rot, so caulking entirely around the opening is the proper thing to do. This is an attempt at a sound-proof container - anywhere air can escape, so can sound.
I'm sorry but moister and moisture are two different things.
make sure the temp inside dose not get above 120f with derating or 100f for normal rated use.
chris has a good design, two things: up size the fans to 12" the one on the back have it ducted directly to the back of the alternator (gen end for those not in the generator industry) 99% of failures your going to see is the alternator overheating and failing. they are VERY sanative to heat.
The alternator windings will quickly fail at about 150f depending on the Ins class rating. So any heat the alternator makes will be on top of the inside of box temp.
I found it over the years the threads on the exhaust pipe are generally the same as half or three quarter inch pipe. So I always take the exhaust pipe and small muffler off and run pipe a couple feet away straight up in the air outside the building changing it to 1 in pipe after about a foot from the box and then put in a 180° curve on the top to keep rain out not only does it get the exhaust fumes up in the air and away from people it further quiets it but by about 20 decibels
Kris this is incredible. And you are so helpful to provide all your steps and how you made your decisions! I hadn’t thought of putting my generator in something like this for using it. Wow thank you!
Nice one Kris, Thank You!
Something my Grandfather once did was use some metal struts to make a cage for the generator, then he used some strong springs and suspended the generator from the top metal struts so it was hanging. Makes a world of difference on the sound and vibration.
Grandpa was a genius. 👍🏽👍🏽
They also make vibration reducing/absorbing pads made of rubber, foam, cork, etc you can get for a few bucks.
This is one of the better videos I've seen & covered my rear. I "WAS" gonna use foam board but quickly changed my mind after watching. I just want to do it right regardless of costs.
This is excellent, I can't justify the whole home backup system for like $12k right now but a ~$1k from Costco or whatever inside an enclosure like this is feasible
The Firman Trifuel 7500 max watt generator goes on sale from time to time. They generally run for 900 and 150 off when on sale.
@@corollaae8645 thanks for the heads up!
Well done. I'm thoroughly impressed. You've thought of everything!!
So glad you got around to this project! I know you have been buried with more urgent issues for us to address! Thanks!
Love this! Thank you for posting this. I'm actually planning on building out a generator shed, your timing is perfect.
Glad it was helpful!
@@CityPrepping I just finished My Muffler Silencer made from Ply-wood and Reduced Sound Level to 56 db😅
You did an amazing job on that project! Great job Chris 👍👍
I’ve been trying to think of a way to knock down the noise from our generator. You sir just showed me what I need to build. Thank you!
That was fantastic! I was just starting to think about building one for mine. First I have to see if the hoa lets me have a shed outside! As always, thank you!
Very cool video! I actually have this project on my to-do list as well so I’ll definitely be referencing this video when I do!
Great job, well done. Here’s a tip to reduce more sound. Get about an inch stand off with a piece of plywood that’s a little larger then the exhaust opening. Add the stand off and the plywood on the inside to cover the exhaust opening. This will help baffleing sound more.
This actually inspires me to build something similar not for a generator, but for an air compressor for my shop. I don’t have a lot of floor space in the shop, so my thought was to build a lawn and garden shed and put the compressor in there, but it would be too far away from power and too far of a run for the air supply. This is just about perfect and I can set it up right next to my workshop, eliminating those two concerns. Thank you!
Try building and adding an intake muffler to your compressor. A lot of the noise come from the intake. I did this myself and it was considerably quieter. Many videos on YT showing different methods.
Great thinking re: the rubber horse stall mats! I never would have thought of that use for them. I might pick up a couple extras when I go buy them for my barn.
This was GREAT Chris! Thank you.
If you do another, or want to modify the exhaust pass-thru; A tankless water heater exhaust thimble is perfect for this job. Does the same thing your custom 'thimble' does except pre-made to route hot exhaust through combustible materials.
Nice job and gentle, smooth explanation. Thanks!
Very nice! I've got something similar going on except I placed the box in my basement and vented it outside via a Vortex inline fan. In the event of a prolonged outage I don't want anyone hearing/knowing that I have a generator. I realize this comes with extra risks but I've got carbon monoxide detectors nearby. 100% grey man set-up.
you realize they will see your lights on right?
Superb bodging skills mate.
I think its really good to develop the skill set required to fabricate functional items, especially since we might all be forced to do this kind of thing more in the future.
This is brilliant! I’m downloading this. Thanks, Kris.
Great project Kris, thanks for sharing!
Nice work. I see you watched some of my videos on building a quiet generator shed and put the ideas to work. Glad to see some of these ideas showing up in other videos in the wild. That's the beauty of TH-cam!
yeh, your video helped a lot. thanks!
Sweet build. Been thinking about something like this for a while now
Great video!! Thanks for the information and perspective on this build 👊🏼🇺🇸
The spring idea is fantastic.
I've been waiting for this video since you mentioned about it months ago. Well worth the wait. Thanks so much for posting!
My pleasure!
Thanks! Your instructions are so clear, even I can do this project!
Very well done. Thanks Keis
Very cool Kris!
Great build Kris!
WOW, AWESOME VIDEO KRIS THIS WOULD BE SOMETHING I COULD DO FOR MY GENERATOR, THANK YOU FOR SHARING THIS WITH US.
Looks like it was a fun project. Nicely done 👍
Very cool build!
Thank you! I “went ahead” and watched this video. Liked !
Good job! Thanks for sharing everything!
Awesome. I was wanting to make one but hadn't started the process of figuring out how. Thanks!
Great video. Valuable information and it’s well put together 👍
Nice build, thanks for sharing.
Good evening from Syracuse NY brother thank you for sharing your projects
Well done. I thought you did a pretty thorough job of addressing everything needed to do a build like this. I think you did a better job than most of these complaining keyboard DIYers would have done. Obviously someone can easily add or take away anything they want for their ideas. I have a old 4500 watt generator that is incredibly loud and wanted to build something for it. Ideally a little smaller and something that I could setup and move easily. Thanks for your ideas.
VERY NICE!! I have the same unit assembled and ready to finish come spring thaw. I will copycat your process. Thanks!!
Thanks for making this vid! The exhaust wrap is a lot easier to work with if you soak it in a bucket of water for several hours first
Fantastic job!
I have a Firman 10,000 W tri fuel generator In a box similar to yours. I live in PA and have had to use it on many occasions. I do not us the sound dampening boxes, I found.they make little difference and hold heat. Before attaching another muffler, CHECK YOUR WARRANTY! Outsourced mufflers change the compression and will cause failures it also voids most warranties. We live in a world now where people see you have something they want so they steal it. I had a welder make me two 4 ft.rebar pcs with steel rings welded on that I drove 3/feet into the.ground, cemented in and ran steel cable through with a heavy duty lock. I highly recommend hard wiring the generator to your panel by a qualified electeician. Electricians and in our area call the plug-in the "pig tail of death" many people start their generator, THEN plug it in, which is a good way to get electrocuted. You DO NOT need another box, just a simple transfer switch that prevents you from back feeding the lines. You cannot power your box until the main switch is off and then the generator breakers can be flipped on. Also, flipp the breakers to the items with the highest draw first. Once.I learned that I can now power my whole house. And make a schedule to run your generator at least every two weeks and check the oil. It is a great feeling to have this item as a.back up.
I’m just finishing my shed like kris . Really good comments -thank you, for chiming in with these.
You are very welcome. We have had a lot of storms this uear and the generaror has been invaluable. I am still extremely satisfied with my set up, and most especially the Firman generator. I run it exclusively on natural gas.
Thank you for posting this. I may give this a try.
Impressive results!
Good video Kris, thanks!
Thanks. Great job!
Nice build, thanks 👍
Wow! I really like what you did there. I like that you payed attention to detail as well. I am the same way with the details. Going with the rock wool was key. I wouldn’t have used anything different than what you used. I do a ton of project and use a wide array of tools and devices and I can see that you used all good quality products and methods. Super super happy for you. 🧠🏆🧐
Thank you very much!
I love these kinds of videos as a contrast to informational/news update videos. A bit out of my means personally due to the amount of materials and time and engineering prowess but nevertheless it’s a very Impressive build to watch.
I have done this several times, you are correct, the fan is too small and you should be blowing air INTO the box not exhausting air, it is much more efficient. Also a "Certified Exhaust Thimble" for combustible walls should really be used as fire codes are not a bad thing.
Awesome build
I enjoyed the video, I have been looking at doing this same thing. Thanks for the ideas.
Great work!👏🏾
Two things in a generator that hate heat; heads and generator windings. If you have 200F inside that compartment you have a recipe for disaster. Look for a 10-15F rise. I can see right away your fan is undersized. For me to achieve the desired temp; rise I went for a 16" AC infinity 3000 cfm fan. Sarted out at 12" 850 cfm and inside was over 125F. Another issue you have is the escape area on your compartment hoods appears to be smaller than the fan exit area opening in the compartment wall. My generator is a 5kw Honda.
Yes you need to keep the propane outside the compartment.
When installing insulation consider ïnsulation pins which you can find on Amzn. Saves drilling holes thro the walls.
Well done!
Great work
Very practical, thanks
Great solution thanks for the video. Awesome.
Great video - thanks!
For good ventilation, the general rule of thumb is to have twice the area of passive INTAKE as you have ACTIVE exhaust. You can either do the math on making one hole, or (the simpler way) if you cut a 4" circular hole for the exhaust fan, cut two 4" circular holes for the passive intakes. (The shape isn't important. Just the area of the holes in respect to one another.)
What if you had an intake fan and an exhaust fan both at the same specs ? I’m building mine that way through the same size sound maze boxes.
@@unbr3akablonsoundcloud-tx6co better to have one fan unless there is a computer keeping them perfectly matched. Otherwise one will cause drag on the other
@@reverendprophet im building an air compressor silencer box , so it’s a little different to a generator . Will the drag still be an issue with sound maze intake and exhaust baffles if I go about this method?
I’m still not sure what u mean by drag ? Drag only happens if the fans are installed close to each other on the same side aren’t they ? Not either ends of the box
@@unbr3akablonsoundcloud-tx6co if the fan that is exhausting is pulling harder than the fan that is bringing in fresh air, it will cause strain on the intake fan. If the intake fan is blowing harder than the exhaust fan is pulling, it can cause strain on the exhaust fan.
Much better, if you want to use two fans, to have them BOTH exhaust and then have twice as much passive intake.
Nice job!
Great idea.
Great show kris
Great design! I would think the air should draft into the engine / across the co2 sensor, so the sensor doesn't trip from Any residual fumes, exh. Leaks, off gassing ,etc. Tks
thank you love the ideas
I would recommend using a patio container with a fan for exhaust. Some fit perfectly around the generator.
I have a dozen comments and suggestions, however, I won't bore you with my opinions. You showed a beginning decibel reading (79.6dba), was there a completed decibel reading? Considering, plastic, wood, and foam are all combustible materials, using *Rockwool insulation was a great choice! I use the same brand (different variations) in my house, garage, attic, and generator shed.
In combination with my solar/battery storage backup system, I use two 2500-watt dual-fuel generators with a combiner box connected to our 250-gal. bulk propane tank with a factory dba rating of 53dba. Inclosed is about 45dba. "Rural Prepping" 🤠
Excellent build and perhaps essential if the grid goes. I have regular intel up on YT. Keep prepping guys 👍 🙏 ✝️
thanks!
Best video you ever made!
Wow, thanks!
This is genius. 💫
I love this and will no doubt be using it eventually the way things are going, could you possibly do a video on home scale Biodegesters? they seem like a brilliant tool for Preppers as they produce no smoke or sound and only need waste streams as fuel.
Very nice 👌
Nice job. Thanks for sharing. I like the motorcycle muffler. Good idea. I saw a guy who used an RV muffler. It’s odd that the rock wool made you it’s because it is not a fiberglass product . But I guess we all have different sensitivities
Very cool build! I hope you run it for like 8 hours or more straight to really test it.
Very good video! Thank you...🇺🇸 😎👍☕
Good job.
Nice box! David Poz just released a video on making a generator/charger using an old treadmill! If the zombies arrive, put the old treadmill to use!
Hey thank you for making this video you are the best
I need a box of those nails!! Those nails are amazing. 11:14
Dude Great job and tyvm for the video using RockWool fantastic Idea.
I saw what you did there with the nail, I like it.
Thank you!
Very informative 👍
Glad you think so!
a 4 inch strip of cement board on your fence will block unwanted heat.
other than that this is the best video i have seen on this so far!
Love this proof of concept.
Do you think anymore bafles in the intake and exhaust boxes would make any significant improvements.
Also the exhaust needs to be lower sound the sound is not projecting out into the area. If you are using this during a grid down type issue its going to be a lot quiter in your neighborhood .
I did something similar with my generator, but after all the time and money spent on the project I realized I could have purchased a cheap Generac generator with enclosure for the same amount. Since I also have solar, I only use the generator if my batteries get low.
Lol yeh this project was a bear
Cool idea. During the last ice storm, I could hear generators running throughout the city. With the usual noise pollution levels way down, it seemed like the sounds of generators traveled quite a bit.
My neighbor has a generator and he lives 1/4 mile away and I know immediately when he cranks it. Must be one of the open frame types.
ty for this
From what I have heard about those sheds is to make sure you paint them with a great UV exterior paint to make the last longer in the sun. One complaint is they get brittle if not painted.
If you invest in a Cummins RS series machine (1800 rpm, liquid cooled), she is quiet right out the gate and great on fuel mileage. Not cheap though.
Nice Video. I think it is easier to start with a honda inverter that has below 60 decibel out of the box and then reduce that even more. In a town 60 decibel is still noisy and easy to hear.
yeh, Honda's are nice. This is an open frame generator (much bigger than your typical Honda) that can power some of the loads in your home.
@@CityPrepping I’m putting a condenser saver/slow start on my ac. Along with the power inlet installed to my electrical panel, I should have ac when the power goes out or brown out. I live in S california too.
Small exhausts? Use fireproof cotton material to keep it centered in larger tube.
you can use a prc drain cover thing (not sure what it is really called but it has a hole and is surrounded by materia, square with a round hole with slats). It lets you seal the hole and prevent critters from climbing in...easily attached to unit with adhesive. as others have said, don't seal the bottom.
Thanks!