Making the Air Raid Siren

[@camboi6103]

Government: time to test our sirens Also government: when was that extremely loud one set up Nicolas: *evil laughter*

[@victorpueblas8153]

Lol

[@victorpueblas8153]

Yo

[@aznainianie7580]

Wow

[@shhmule]

Not sure why we need the stupid quotes. We all watched the video, and we can make our own judgement without you having to comment some dribble.

[@Abcwhatever]

@@shhmule 612 people disagree

[@napalmjack]

It's all fun and games until your neighbor makes a tornado siren and starts it up at 3am on the first Saturday of the month.

[@PanferriDPMO]

?

[@danielauen7790]

@@PanferriDPMO after the war ended, these sirens were repurposed as tornado sirens and for notifying volunteer firefighters in some areas.

[@ghoulnightskaneki-minecraf6672]

Amazing they all be panic AND BABYS WAHA WAH WAH WAH AND PEOPLE STARTS RUNNING *IF THEY DONT HAVE SHELTER*

[@ghoulnightskaneki-minecraf6672]

Amazing they all be panic AND BABYS WAHA WAH WAH WAH AND PEOPLE STARTS RUNNING *IF THEY DONT HAVE SHELTER*

[@doohickey-enjoyer]

@@danielauen7790 That is in the US. These sirens are in France.

[@andrewkosenko2757]

I love how you point out that 3d printers are pretty cheap in the air raid siren video. (now everyone can be a nice neighbor for around 280 bucks shipping included + a motor)

[@dpvious]

*"How to scare your grandfather"*

[@neonwolf1003]

S c a r e d

[@CentralOHSirens]

Green Universe Then it’s funny

[@dpvious]

@@neonwolf1003 yes lol

[@neonwolf1003]

@@dpvious how to scare*

[@kidsmarion7795]

XD

[@j.m.1389]

Wife: Are we being invaded? Husband: No honey. The neighbor is just shooting another You Tube Video.

[@cosette14234]

This almost killed me XD

[@Jumpathy]

@@cosette14234 bro r u ok you need to go to a hospital

[@cosette14234]

@@Jumpathy im good XD

[@laaeeh]

Test

[@gorillaau]

Wife: Do you mean the terrorist? Husband: Terrorizing us, so possibly. Seriously, so love this video.

[@piwykk]

Hello from Ukraine! We hear such sirens every day, it was interesting to learn how they work, thank you!

[@J19_vlogger74]

it's so sad

[@RealSebbor]

@MATTHEW ADRIAN LEE NO WAAAAY REALLY???? WOW I DIDNT KNOW!!!!!!

[@Daniela9_8]

Hi I totally understand your feelings in my country it happens a lot it’s terrible waking up at 3 am with this scary and strong sirens when rockets are thrown at us stay strong

[@murphyisadog]

@Saitama what do you mean? What if it was your country? Wouldn’t you be scared, every day?

[@АксьоновБогдан]

​@@murphyisadog he is russian. they are always mad//

[@TheFoxVampire]

Wow, that sounds like a legit warning siren! Hats off to you for making this!

[@robomax4020]

nicolas: *makes homemade air raid siren* his neighbors: "why do i hear boss music?"

[@DianaProudmoore]

it should be "Raid event"~

[@thuyvannguyenthi1459]

Oh no, the boss is comming

[@Taijitu527]

*boss music intensefies*

[@maryciliciousflores1287]

The model of the siren in France you recorded is a DS PAKITA siren and it's sound was used for the horror film "Silent Hill". And the DS PAKITA siren is pretty much a sentry siren running 50 hz while a sentry siren runs on 60 hz

[@antonschneider4652]

france also uses siren brands like KM Europ, Demay, Northern electric construction and also PTR.

[@onfire4664]

there is no difference between 50hz and 60hz. they both run the same

[@Levi99130]

​@@onfire4664no, 60hz Is more faster rpm than 50hz

[@herr_panzerfaust2514]

It´s just incredible how easy it is nowadays to be the most annoying neighbour in the world.

[@getty.beannn]

In the old days, there was something called mailbox baseball. That is how to be the most annoying neighbor in the world.

[@SemiCollin]

@@getty.beannn fair point

[@biohazard_]

@@getty.beannn fill it with concrete and watch them break their arm

[@laplantamichay]

Imagine an alarm with that siren at 6am

[@disponvel]

@@laplantamichay that is my every morning hahaha got som air raid sirens as alarm and it wake me up very fast.

[@ghaleasprod6952]

I can confirm that these in France do sound the same all around. They are mainly used now as chemical danger sirens (quick blows) or nuclear danger sirens (long blow with a small pause sometimes)

[@Moorhuehnchen]

German and austrian are the same

[@ChrigamingDK]

Not in dk

[@Simcraft8_]

True I live in Paris

[@obimic]

yes, in France, every 1st wenesday of eanch month at 12:00 and at 12:30

[@tabascoraremaster1]

@@obimic In the Netherlands monthly on the 1st Monday at 12:00

[@kaedeschulz5422]

What a project! I need this for my neighbours when they wake me up again at 3am. 3db is twice the power yet doesn't sound twice as loud. 10db feels twice as loud.

[@arunbiswas6269]

দশ জন শশষেএঊঊঊ😂🎉😢😮😢😅😊ঞ❤❤😂🎉😮😅😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊

[@arunbiswas6269]

এর

[@arunbiswas6269]

😀😀

[@SarQue-ew7it]

😂😂😂😂😂😂lol ur ded. Arunbiswas6269

[@SarQue-ew7it]

@@arunbiswas6269😂

[@ntikop]

Teacher: today we will play... *points at lego* Everybody: build house,horse,creatures The quiet kid:

[@unironic5715]

More like : 7th Grade Teacher : Today we will build things using a 3D printer! Everybody : Creates Models The quiet kid :

[@Kamii.1g]

h o r s e

[@lmarcotte7057]

Ya that's me

[@encrypted7227]

@@Kamii.1g B I G D O G

[@a_makarov]

Now he's loud kid

[@danielauen7790]

Id ask why, but I kinda want one too...

[@domanickmartin4830]

Same

[@gallriothe1189]

Try West Shore Services they can hook you up with one.

[@gallriothe1189]

Каан Каглаян Don't call me stupid

[@keatonspence9306]

@ no u

[@Thunderbolt_7026]

Same

[@cubee4108]

very useful for making your own air raid kit at home, really helpful as a ukranian, thank you so much!

[@sadface]

Never even crossed my mind, sad it has come to this. Слава Україні!

[@carcollerote8121]

@@sadface Z

[@nakidsalmon5327]

Де будеш це використовувати, якщо сирен вистачає на всіх?

[@Dima-ys2dq]

@@carcollerote8121 elensky

[@sentryinventor]

@@sadface слава россии

[@The_JEB]

If you want to make this siren even louder, add a second rotor with slightly smaller or larger holes, just as long as they are a different size, the tones of each will harmonize and create an even louder siren. Its how most car horns work.

[@NeilPlaza]

Is this note even possible to a 6 port siren? kzbin.info/www/bejne/qqPcm5WVndKBbaM Edit: That's my Silent Hill siren synth. Model DS PAKITA SIREN by PAKITA.

[@phenylmusic]

you mean the klaxon or something? klaxon is rotary but modern car horns are just speakers with or without a cone right?

[@The_JEB]

@@phenylmusic car horns mix two tones, a higher and lower frequency, they harmonize with each other and create a much louder sounding frequency. you can do the same with rotary sirens or other horns by making the holes different sizes.

[@phenylmusic]

@@The_JEB right car horns usually have 2 tones a minor third apart

[@MikeDCWeld]

Better yet would be a three rotor design with each rotor having a different impeller style as well as different hole sizes.

[@renskivideos]

Breaking news: "Entire town evacuated for no reason."

[@DanielTAKD]

Harsh.. but.. true... :/

[@massfrog]

LMAO!!

[@laaeeh]

It's a test

[@renskivideos]

@@laaeeh It's a joke

[@massfrog]

@@renskivideos Some people bro.... right over their heads

[@Imrooot]

Holy sh.t. I can hear these sounds in real life almost every night, and your test (7:37) made me scared a bit. At least now I know how they work.

[@gtaseed]

Ukraine?

[@taevan4463]

@@gtaseed Chicago

[@bumas3825]

@@taevan4463 stupid?

[@bruhmoment4505]

@@bumas3825 no bitches?

[@YINHE2.0]

:(

[@halpmeamcringe1538]

Put it on top of a church and then you will get silent hill. Also the siren you recorded at the beginning is a Km Europ or a DS Pakita.

[@sirensofgahannaOhio]

Hey 3t do a hi low

[@yaboiandrew8206]

Pregnant anime Girl pregnant

[@pavankumarpanndu]

Love your words

[@halpmeamcringe1538]

@@sirensofgahannaOhio umm I am a Gas Powered B&N Mobil Directo not a 3T22

[@therobloxguy3286]

@@yaboiandrew8206 w h a t ?

[@nixcc1628]

Easier tutorial: - Get pregnant - Wait 9 months And you've got your own air raid siren

[@Mr.Justanotherdude]

A living siren😂

[@cheedam8738]

Lol

[@Gingerbread07]

🤣

[@Xpomocoma202]

Siren head XD

[@darkenedsoul3425]

Very cursed

[@batman3698]

Thoughtful to try it during the city siren testings. And cool build.

[@g4o5tly47]

That world war veteran neighbor : Wheres my rifle i didnt use for 50 years?

[@williamsnowball4267]

Uranium Turtle you ruined the joke.

[@g4o5tly47]

Yeah uranium turtle

[@padmosss.voidstellar2525]

He gonna snipe those planes 😂

[@grzyb11]

There was no world war in 1970 boi

[@g4o5tly47]

@@grzyb11 I don't spend my time tracking when wars happen

[@Schorschi081]

When you pause the video, but still hear the sound...

[@saftschinken2353]

Its probably Saturday midday xD

[@laaeeh]

Can people stop making the same comment

[@Schorschi081]

@@laaeeh No

[@conner5611]

Meh its just the noon siren 🤷‍♂️

[@nrdchic]

*bombs thuds*

[@djkarcher1896]

It kind of sounds like a crossover of a Hörmann HLS F71 and an old Klaxon horn. Really like it!

[@flosamu0506]

Did you know that the f71 come from germany but has been used in other countries too

[@djkarcher1896]

@@flosamu0506 yup, they were quite popular back in the days. They've gotten rare though, I think there's one in Finland that still runs. There are quite some HLS X73 left, though.

[@nightcorewolfjay178]

If I was your neighbor I’d probably say “look kids it’s the man that will one day save our bloody lives by keeping us on edge 24/7 now that he has his own siren”

[@_CouncilMember-]

r/hmmmmmmmmm

[@jackclark1994]

ever heard the story of the boy who cried wolf?.... I'm assuming a similar situation...

[@trenton_ingles-head]

"Dad I need to use the 3d printer" "What for?" "Just don't worry about it" 2 months later "What the fuck why did you make an air raid siren"

[@abraxaskabrakas6098]

lol

[@stevewhite4080]

Lol

[@RyanFaeScotland]

"For air raids, duh"

[@JJ0JPG]

nice avatar

[@nicechoicee]

Thts the kind of child i want lmao id help him make that stuff too

[@vibegames15]

‘Hey guys, today we are pranking my neighbours’

[@ultrayt197]

he protecc he atacc but most importantly... he gives veterans flashbacc

[@JustDan_44]

wtf its too dark

[@luthfihar3211]

@@JustDan_44 too darcc*

[@monkemonke9048]

Lol

[@ethearnos6397]

oo another pixel gun player

[@captainretro373]

“THE NAZIS, THEY’RE BACK!!”

[@HDTomo]

The vietnamese grandpa next door: **faint fortunate son memories**

[@KhKh-bg9wz]

More like French Grandpa cuz y'know, WWII

[@PRExJay]

🎵It ain’t me,it ain’t meee. I ain’t no fortunate soooonn.🎵

[@jimmynegunian5221]

I am from Vietnam

[@grammarofficerkrupke4398]

@@jimmynegunian5221 No, you're from Japan.

[@jimmynegunian5221]

Why u dont think I am from vietnam

[@RandomGamer40465]

At 6:00 that clicking isn't the centrifugal switch. The switch will only disconnect the windings when the motor reaches a certain RPM and reconnect during wind-down. I don"t know what that sound is but its not the centrifugal switch. So it should only be heard once during wind up and once during wind down.

[@vevenaneathna]

"spinning a heavy chunk of metal at over 3000 rotations per second is obviously dangerous" holy shit yeah, thats 180,000 RPM you need a super alloy to even attempt that

[@gialuquin88XD]

I don't Understand, could you explain plz ?

[@vevenaneathna]

@@gialuquin88XD 180k rpm is too fast

[@TerraeChannel]

@@gialuquin88XD It's said multiple times in the video that the motor works at 3000 rotations per seconds. But that's impossible, only things going remotely close to that speed are injection turbines in rocket motors. SO it's not 3000 rotations per seconds, but 3000 rotations per minutes (similar to a small diesel car going 100 km/h in third gear).

[@psy0rz]

@@gialuquin88XD he mistakenly said seconds instead of minutes

[@gialuquin88XD]

Thanks for the comments guys!

[@leroydever4761]

Sounds pretty loud alright. Love the exterior shots. Looks likes a really nice area.

[@panzer.kampfwagen]

…until a nuclear bomb was dropped

[@MadMadGruff]

It was

[@mihueeggroll1818]

4:08 is this forshodowing for a MrBallen episode about 3-D printed sirens?

[@kalebbruwer]

Finally, a doorbell I can hear with my headphones on.

[@Fa_UTG]

STOP DISLIKING MY VIDEOSSSSSSSSSSSSSSD

[@Xeon501]

@@Fa_UTG what

[@Fa_UTG]

@@Xeon501 STOP DISLIKING MY VIDEOSSSSSSSSSSSSSSSSSSSSSSSSSSSS

[@Xeon501]

@@Fa_UTG boi i didnt check your videos yet

[@simulize_studios7815]

Teacher: Today all the sirens are being tested You: *starts his siren

[@aliffianchannel.7419]

And the whole town get evacuation 😁

[@maddoxinc1642]

You're channeling Mr Ballen and I can't help but feel like a good thriller is coming..

[@hootinouts]

There was one of these type sirens up on top of a pole close to the house I lived in as a child in Philadelphia, PA. It would go off at noon and would scare the pants off me when I was close by. All of these were eventually disabled. I addition to the air raid siren at noon, there was a huge growling steam whistle that blew at the beginning and end of each shift at the shipyard near my home.

[@jeromeseibert]

When your neighbor didn't get the memo and starts to purge

[@urufodjak3092]

les voisins ont du apprécier... ^^ en tout cas merci pour la vidéo, je ne connaissais pas le principe de fonctionnement d'une sirène, la prochaine fois que j'entendrai celle pas loin de chez moi ça me rappellera ta vidéo ! 👍

[@Marpurrsa]

i love his solution to not wanting to piss off neighbors by testing it on the first Wednesday of the month

[@thafff]

Definitely aligns as Chaotic Good (^^)

[@DrpanProductions]

You should totally start running yours with the French - Réseau national d'alerte every first wednesday I would watch it every month

[@NeilPlaza]

Yeah

[@ProfessorFartsalot]

While watching this, our town's civil defense siren was going too just as you turned yours on in the video. Crazy. Had to take a reality check, like "Wait why do I hear sirens OUTSIDE my headphones?"

[@britjay0010o3d]

Imagine as soon as that starts playing outside, everyone in the town starts legging it to the nearest bunker

[@50buttfish]

That's HOW you find a bunker, if everyone is so hush-hush about them. WATCH & LEARN.

[@myrealusername2193]

Here in Switzerland about half of the homes have their own nuke bunkers and every town is legally required to keep one that can fit everyone in the town.

[@fuzz1252]

@@myrealusername2193 that heavy door to the storage room

[@ahnology4361]

imagine doing this in switzerland

[@benmeyer2916]

Man you really did a good job with this, sound very real and has a great wind down with the weight

[@hvadd]

Thank you for this amazing video, I have now finally taken initiative and bought a 3D printer, the files and eventually a motor. I've been thinking of doing this for a very long time and finally now its happening!

[@EqualGaminG_VR]

what moter should i buy? ive been interested in sirens for years now and finally want to make/get one

[@hvadd]

@@EqualGaminG_VR Hey! Like he explains in the video, basically anything would work, as long as it has an rpm range that is not too low. Hope this helps

[@EqualGaminG_VR]

@@hvadd thank you! I didn't really watch it all the way through 😅

[@tregreco4410]

Sounds more like my old vacuum trying to kill itself.

[@colesyaj_tech]

Lmao XD

[@Mr.Rendier]

but then 10 times louder whaha

[@lsupreme]

Or when it suck in something is not suppose to

[@InaMopar]

@@lsupreme ikr 🤣

[@Leon-Jordan]

With a motor that big, you can build a much bigger bigger chopper and rotor. You could tell you can build it much bigger because the time it took for the rotor to spin up was quite short. I personally suggest scaling up the model with the same motor, and add a thick metal plate on the rotor to act as a fly wheel (your attack signal will sound GREAT). Love the content!

[@NicolasSalencPBP]

Of course, but my printer can only print 20x20x20cm I would have loved to make it bigger

[@Leon-Jordan]

@@NicolasSalencPBP shame. Anyway, I'm sure you'll find a way if you choose to continue this. Best of luck!

[@vintagesimplexfirealarmsof6440]

or get real parts and that

[@rachelknowlton9714]

nice siren looks good👏

[@Dennisthemas]

8:04 Tsar bomb incoming

[@APERTUREAEC]

i just realized i got one of my favorite songs "Ross Bugden - Something Wicked" from a video that taught me all about air raid sirens and my inspiration to them. thanks man :)

[@pazzy4501]

Well done, I thought it would produce a louder sound, but the actual sound seems to be muffled, we have a smaller one yet so loud at our company, also, the upper steel disk is unbalanced causing the shaft to shake and decrease system efficiency, try to eliminate shaking and friction and you are good to go, keep up the good work 👍👍

[@xxdopegamer21xxvids74]

This: -Makes siren sound- My neighbor (Vietnam veteran): -Has flashback- Me: -hears his war cry-

[@gordis6817]

how the hell you make those lines

[@xxdopegamer21xxvids74]

@@gordis6817 imma be honest I dont even know

[@jsaleen17]

I laughed so hard at how loud it was when you were outside. I want one.

[@sudheerm.s6792]

Underrated channel.Sure it will be the number one channel

Mama, c'est rare de trouver un KZbinr français qui fait des vidéos en anglais ^^

[@NicolasSalencPBP]

Il me semblait bien que t'avais posté un com x) Ouais c'est simplement pour atteindre un plus grand public.

[@dan2800]

Others: weak 90db sirens Him: 110db

[@buildsbricks2]

1.1 kilowatts, if I did math correctly, is actually a little under 10 times below the normal horsepower for American air raid sirens, not too sure about other countries. The normal horsepower is around 10 hp, so you would need a 7.4 kilowatt motor.

[@robertgift]

Well done video. Thank you. The rotor openingshould total 50% of the rotor circumference. The portshould be [ ] to create the greatest shock wave.

[@lecusz_2168]

Me when making siren at home:starting siren* Grandfather: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

[@lecusz_2168]

Grandfather:AAAAA ITS SOOOOOOOOOOOOOOoooOoOOooooOoooooOoooo LOUD

[@instantnoodles8640]

@@lecusz_2168 wtf its kinda cringe

[@kdrapertrucker]

In the midwest U.S. everyone goes outside expecting to see a tornado.

[@IIIIIllIllIIll]

Build one myself, same Design like yours but i put a heavier Flywheel on top, so it Starts slower and hold the rpm longer when turned off

[@helloworld8428]

Ears: hurt Power: huge Neighbors: angry Police: panik Hotel? Trivago!

[@user-pm8kr8kp5p]

Copy paste

[@evanherriges4042]

comment? boring

[@zamknietykanamozliwezenied4124]

Comment? Stolen

[@MeganWhamGMfan]

Corona? Virus

[@colesyaj_tech]

@@MeganWhamGMfan XD

[@Thunderbolt1000Tfan]

Nice job! One other thing you might want to do is make sure that the rotor is as well balanced as possible, because that'll reduce the wobble and probably make the wind-down a bit longer. By the way, the siren in the recording at the beginning of the video was a KM Europ siren.

[@EASsirenVids01]

Or add more ball bearings

[@FaithFilled1111]

Lol your "eeaaaand" at the very beginning sounded like the start of an air raid!! Love these horns. Keep it up!

[@jedixo]

you should make it dual tone too for that extra WWII effect

[@Alucard-gt1zf]

Not even that Just needs something to lower the power and raise it again in a wave and should sound pretty similar

[@snapboy1309]

7:38 if you turn on captions it says music lol

[@tangmengtit888]

Lol

[@Random_4400]

Ik lol

[@zairebutler9440]

hahahaha omg so funny bro

[@Captain_Leafy]

It says it in every sound that is not a word

[@nabilal-hakim37]

Wkwkwk

[@VibingCat39]

"The darkness is coming"

[@thedancingpickle6362]

This sounds like a lot of work but you should attempt to make a dual Tone air raid siren except without a bench grinder and make it a 9/12 port

[@tonitighe4008]

I like the slow start at first then it kicks into gear and speeds up really fast at the end of full spin up

[@ncdave4life]

How long did it take to to do all that 3D printing? What material did you use, and roughly how much filament did you spend on it (in £ or €)?

[@WarschauerPakt]

Me:*turns on my siren* My veteran neighbor:*flashbacks*

[@GeorgeTheNPC]

I wanna build the same thing but would a 500000 rpm be a bit overkill?

[@michaellacock]

I need to attach an arduino to this and use it as my alarm clock

[@jewing464]

I think my neighbours wouldn't appreciate it much, as i live in a country that actually facing a constant rocket attack threat, and hearing a real warning siren which indicating for a life threatening situation is a common thing in some areas. You hear this sound and automatically run for your life into the bunker.

[@Partially_Frozen]

Ukraine? Middle east? Russia?

[@majorxmelee]

@@Partially_Frozen My guess would be Palestine or Israel

[@Supgangy]

Israel?

[@Flitzpieps123]

The french Tomary... Love your Content, so creative and interesting to watch!

[@frashking296]

hahaahaaaa i cant stop laughing anymore.. 7:56 Would like to see the reactions of the neighbours when the siren turns on

[@TheMatsushitaMan]

0:15 The manufacturer is KM-Europ, models are unknown unfortunately.

[@NeilPlaza]

The manufacturer is PAKITA and the model is not named KM Europ but DS PAKITA SIREN.

[@1000BT]

@@NeilPlaza no its NAME by the manu is KM urope 8 Port Siren

[@NeilPlaza]

@@1000BT The manufacturer is PAKITA and the siren model is DS PAKITA SIREN if you don't want to believe me i'll send you a link if you reply again.

[@1000BT]

@@NeilPlaza SHUT UP

[@nilsp9388]

It is indeed a french km europe siren

[@willft520]

Incredible project, I need one of these to make it work at 9 am whenever my neighbors decide to have a loud party until 5 am.

[@amstan3896]

I see what's going on here. You used the multimedia capabilities of VLC to amplify the sound.

[@danielgarcia-dt7fy]

I bet it even has 4k quality sound

[@PTTEntertainment]

you guys ever imagine the fear in people’s faces after hearing that siren go off multiple times

[@FloridaStateWX]

I am planning on getting a mini 3d printed tornado siren when I move up to Tennessee. Less people around in the mountains, more opportunity for siren testing. Plus, there are most tornadoes in Tennessee than in Florida, so that is a plus and an increased threat.

[@BeeBoy08]

bro i moved from florida to tennesee and im going to be living in fear 😭

[@AmericanSirenProductions]

You should do a full recording with it going with your local sirens.

[@SOLDIER8O8]

Also if u want to get it more deeply in sound try making the horns larger

[@SOLDIER8O8]

@Timofey Kozyrev wow ok pro

[@SOLDIER8O8]

@Timofey Kozyrev a horn makes it loud idiot

[@SOLDIER8O8]

@Timofey Kozyrev well ur an siren guy me too but not so much as u cuz i cant like buy a thunderbolt t1000 or a model 2 cuz in my country the only have a modulator and no other siren like in the us.

[@SOLDIER8O8]

@Timofey Kozyrev but my fav siren is the carter second the thunderbolt third the eows 612

[@SOLDIER8O8]

@Timofey Kozyrev the are tryna scrap sirens cuz the think its vintage and mobile alerts are better

[@TheOfficialDorianelevator]

deleted my old comment as i was completly wrong, the siren you filmed seems to be a Demay siren, some Demay sirens actually have a lower pitch as they use a 2850rpm motor instead of the more normal 3000, the ones that have a lower pitch are the R3P models but i do not know the exact model of this one. the one you made looks pretty similar to the Pakita LCi siren or a CEN (Construction Electrique Du Nord) NP2S siren. hope this helps.

[@TheOfficialDorianelevator]

if you are wondering how he gets the sound of 3000rpm with a 2850rpm motor, rotor weight normally slows down the motor a lot, but since his motor is so powerful, it cant slow down the motor.

[@brendenstahl2878]

I want one so when there is a big thunderstorm I can play it outside to scare everyone *evil laughter*

[@gipsydangeramericasmonster9632]

Get the biggest one ever made. That will scare something

[@ryguy2006]

@@gipsydangeramericasmonster9632 You'd probably get killed trying to make a chrysler victory siren in your backyard.

[@gipsydangeramericasmonster9632]

@@ryguy2006 probs. Knowing me I would just somehow make the world’s biggest air raid siren bomb.

[@TexusNoe365247]

If you're a thoughtful (studying) engineer (like me), you could get away with a less powerful motor and use a 2:1 gear ratio to drive the rotor. However, it may take a little longer for the rotor to reach full speed. Furthermore, you could use a 3 phase motor to reach that speed much faster than using a single phase motor. The other gear would also have to be mounted next to the motor at a precise location to help with the gears meshing. I'm not sure if using different types of gears may help mesh better though. Btw, I'm studying to be an electrical engineer although mechanical engineering also fascinates me.

[@tufab3494]

"You can hear the surrounding sirens being tested" In which kind of city do you live? Lmao

[@randomprimary]

The American Tornado sirens are terrifying, even at wednesday at noon when it plays as a test. But DANG, during a storm it freaking drops your stomach and your blood runs cold.

[@dougelick8397]

Yes. When they go off, you think about it a fraction of a second - "It's not Wednesday!"

[@coasterfest]

@@dougelick8397 What happens if there's a tornado on a Wednesday?

[@dougelick8397]

@@coasterfest You look outside at the sky. To clarify, 12 o'clock on Wednesday.

[@xXSeReSXx]

8:05 Nobody: The Honda civic guy at 2 a.m

[@egzozreyizz5481]

when he test the siren outside: Neighbors: RUN TO THE SHELTER AAAAAAAAAAAAAAAAAA

[@fighterjet1180]

8:25 if it helps, you choose a day when others were already going off 👍

[@catlady8324]

It doesn’t “Push out” 1.1 kW, it draws 1.1 kW under a heavy load.

[@richardwitt6243]

On the motor plate normaly it is only written the power its giving away at the shaft. So the motor is translating 1.1kW to the shaft on max load. If you want to know how much power it draws you need to divide 1.1kW by the efficiency factor. Under full load the motor would probably draw around 1.2kW, depending on how good the efficiency factor is.

[@NicolasSalencPBP]

@CatLady That is incorrect. 1.1kw is the mechanical power the motor is able to output under full load. Mechanical power(W) = torque(N.m) x rotation speed(rad/s). To calculate electrical power consumption, you need to refer to the label. (you can pause the video at 0:53) Under full load, this motor pulls 6.08A on 230v. The power factor (cosφ) is 0.99. Input power(W) = Current(A) x Voltage(V) x cos(φ) = 6.08 x 230 x 0.99 = 1385 W So because of energy losses due to the efficiency factor, under full load the motor pulls around 1385 W and pushes out around 1.1kW 285W are mainly converted into heat which need to be dissipated by the motors fan and fins.

[@may21136]

Now that's some epic electrical engineering

[@nathanielbean3119]

@@may21136 took me 30 seconds to read this whole comment reply’s section

[@TheMrTape]

Wrong or not, I'm so happy that both genders join in on EE subjects. It feels so lonely without you guys.

[@victorcamara2155]

I love how everything you used to make this I have access too and now I want to make one too lol

[@breakbuildrepeat4571]

Brilliant! That God I don't live in an Home Owners Association. Adding this to the build list.

[@tarasdrozdov7559]

Актуальна штука) У мене до речі, за вікном зараз звучить вібій повітряної тривоги🟨🟦

[@honzareality]

3 dB represents a doubling of the sound pressure, an increase of about 10 dB is required before the sound subjectively appears to be twice as loud.

[@jeffreymurdock8366]

I'm sure your neighbors just absolutely love you.

[@theblubus]

This is awesome! It's exactly what I wanted to learn about. HOW do these things work lol But your flawless presentation and editing made it so much better than I could have imagined. Then there was this audio masterpiece playing in the background at 4:00. It reminded me of playing Portal. Wonderful video!

[@BarneySaysHi]

I love the modular design!

[@olehsokolenko2352]

Дяку утуб за рекомендації, але і так чую її періодично🥲

[@cye2877]

Man scared the heck out of the neigbors