How Much Pressure Is in a Pool Toy?

I was curious how much pressure is in a pool toy, so I brought out a giant pressure gauge to test a few toys out.
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[@BotchFrivarg]

It is also fun to see how different chambers/parts of a toy can feel differently inflated even when all are connected (so pressure is the same everywhere, but the tension on the material isn't)

[@HeathDragon]

Yes, that is correct. It's the same concept behind why the palm of a latex glove inflates but not the fingers or the body of a balloon but not the neck.

[@BotchFrivarg]

@@HeathDragon Indeed and has the same reason behind it as why a larger toy is already overinflated with a lower pressure! surface area vs volume (or the famous square/cube law)

[@KronoGarrett]

@@BotchFrivarg And why features like limbs, ears, spikes, and claws need to be upsized/exaggerated.

[@BotchFrivarg]

@@KronoGarrett indeed or the chambers must be completely separated so those features can be inflated to a different pressure

[@AerialTheShamen]

Mylar/foil balloons with complex shapes (e.g. ciphers or alphabet letters) often have an open shape instead of closed ring to ease pressure distribution if slightly overinflated (e.g. by heat and atmospheric pressure change), because this foil (actually PET like plastic bottles) is not very stretchy. Complex 3D figures (like Airwalker lifesize superheroes) even had limbs made as separately inflated flat shaped balloons those were only interconnected with dual side adhesive film, to prevent overinflating the main body or limbs looking slack. (Modern variants often have poseable plug-in joints those act as air duct and so don't have insulated chambers anymore.)

[@rekalty4477]

Any excuse to see large pooltoys getting overinflated until they burst.

[@Jilocasindragon]

For real :D

[@MermaidSystem]

this video is a nice excursion into material science and technical mechanics. In Germany we call the formula for the material stress sometimes "Bockwurstformel" and with this formular its easy to understang, whay toys normaly rupture longitudinally

[@SamTheMasterDragon]

Good testing! The reason why why larger toys are less firmer is because of the larger surface area there is for the vinyl to stretch. I think this relates to hooke's law. But also the greater the volume of gas, the more you can compress it, since ideal gas laws are not linear iirc.

[@sneaks01]

I love your scientific approach to inflations and theory. Great work! 😊

[@crabbable]

the sound of the shark popping in slow mo was really haunting lolol, great video as always

[@UtahShark8798]

Bohn

[@Badderpillar]

Your channel is so informative. I love learning about inflatable toys and how they can best be cared for. :)

[@TORAPoops]

Now imagine the same with an airbed, or an inflatable boat. 😂

[@AlexVolz-wr4lg]

Heath dragon I want you to get a ton of intex inflatable sharks to make an army and then battle them against all of your inflatable whales

[@mrlooner7499]

I'd love to see a similar video exploring GL-balloons (GL500, GL700, GL1200, etc). Would also be interesting with a video comparing Intex toys and those from Shosu that are made for adults to ride them. And how does rubberizing affect toys like this?

[@HawkerBlue]

Haha, hot damn you did one of those old red rex's in. I ain't seen one of those for years

[@Lrofmaulol]

That t-rex took more than I expected, not gonna lie. I'm hesitant to even sit on mine because I'm already laden with crafting projects in that regard xD

[@HeathDragon]

Yeah, I did not expect it to take that much either. The one I had back in the day was very fragile.

[@Bronhitis20]

i never thought there was a whole science in inflatables.i really like your content keep up the good work.have a nice squeaky funtime day ❤🎉 3:45

[@pascalmatthes7029]

I like the red dino 0:06

[@xel7342]

This honestly sounds like an excuse to make a lot of vinyl squeaking noises and I AM ALL HERE FOR IT!! >:3

[@douglastheprotogen4838]

Hehe

[@LukeyPlayz2004]

@@douglastheprotogen4838proot

[@user-oq7rp7lt2t]

I would like to see a video of it inflating and bursting full time.

[@orionwatts9200]

I used too have an orca inflatable pool toy at my moms house and we named it torus and it popped this was like 7 to 6 years ago RIP Torus 😭😭😭😭

[@INFLATABLELAB]

Now I just need to go get some high precision pressure sensors and quick response pneumatic valves and with a speedy enough PLC that could turn into a rig that inflates the thing just enough to blow up with a slightest touch of a finger, at least in theory :P

[@TrowaWayac]

I know you get a lot of requests, but if you still have your inflatable corgi sprinkler can you do a video on how to reinforce it? I am planning on getting one on budget but i don't want to ruin it completely 🙏

[@user-ld7sr9tm4e]

Maaann... I thought it was ALL MY FAULT for years! See, when I was 12, I had a "crocodile" pool toy. But when I inflated it, it poped! But I had no computer back then, so I had no idea on how much to inflate my pool toy! Never got one again out of guilt😭 I'm in my 30s now, too...

[@user-ld7sr9tm4e]

@OH-zw2ic only had a scooter, my dude... parents didn't trust me with a bike... or a tricycle 🤷

[@tiger_shorkz]

Idk why i really like pooltoys

[@puporka5941]

It’s saddening to see them die but also the information is very interesting and educational. I wonder what the difference is between riding an underinflated and firmly inflated float is, and what different stresses they can take? Or what is the maximum amount you can inflate a float before they become unsafe/too prone to bursting? Also do you have any plans on selling the dead inflatables, or do you repair them and use them as normal?

[@Railroadracer49]

Very interesting Good job 👍🏻

[@HeathDragon]

Thanks!

[@TheRadicalOneNG]

Thanks for making this video Heath. It always baffled me that artists would treat PSI like Dragonball power levels and have their soft inflatables rocking PSI levels of like, *90+* Video's really well done and informative, yer great!

[@HeathDragon]

Thanks!

[@douglastheprotogen4838]

Love the sounds UwU

[@Jones5121]

i wonder how these are made excellent vid tho👌

[@MortonGoldthwait]

Good Lord, that lil whale did not give up.

[@Orcafan_2002]

In Germany we have the pressure in bar

[@HeathDragon]

Yes, the pressure rating written on several of the toys I have is in bar.

[@Kapper200]

Do you have the videos for each inflatable is this vid you can upload? It’s really enjoyable seing a inflatable pump to pop from start to finish :)

[@HeathDragon]

Each clip is cut pretty short in this video, but there isn't much more than what is shown. The video files get huge when my camera is running in high speed mode. So each recording was started with the toy mostly inflated.

[@JayJayTLK]

Do you have knowledge of diffusion of air in inflatables? I have a PP wolf and after two weeks the body feels noticeably softer. It's still in shape but definitely softer. I don't notice it as much for the legs. Can this be caused only by diffusion or is a micro leak more likely?

[@HeathDragon]

Most likely there is a small leak somewhere. Air can diffuse through vinyl but extremely slowly. Think on the order of many months to a year or more to see signs of air loss from diffusion.

[@FrostbyteTheFox]

I had a good question.... so I've had an IW Tiger for a few months now, but something is starting to concern me. The front paws, and now the very edge of the face, are getting a little stiff. Is it because of temperature or is it getting rather dry? (It hasn't been outside and the room its in tends to get cold at night)

[@HeathDragon]

A common cause for that is skin oils especially facial oils. Sometimes sunscreen or other oils can cause the plasticizer in the vinyl to come out and the material will become stiff.

[@FrostbyteTheFox]

@@HeathDragon Is there any way to remedy it?

[@fredlllll]

wish they made beachballs with overlapping seams

[@HeathDragon]

They do. I bought a 6 foot diameter one off eBay made with 0.8 mm vinyl and overlapping seams.

[@fredlllll]

@@HeathDragon well, i meant the ones you can comfortable sit on XD

[@kiritogeekgameplayshd4347]

I wonder there a intex lil inflating

[@VolpeInCalze]

Wonder how much a reinforced toy would take

[@HeathDragon]

It wouldn't really take much more. The toy is growing because the vinyl is stretching and will eventually tear. Reinforcing the seams really only helps protect them from fatigue failures and strengthen tight negative curves or bad seams.

[@CTXDful]

This had ASMR vibes

[@deusdedithkojiuchino9349]

How many pressures support a beach ball?I have giant type of 3m and like know your capacity.

[@LukeyPlayz2004]

I know there’s a lot of inflatable lovers here for the sounds of stretching and inflating x3

[@marek.medved.77]

hopper ball pressure?

[@Jack-rl4gp]

Is there going to be a Short of this like the balloon one?

[@HeathDragon]

Yes, I have a series of shorts scheduled to come out.

[@Jack-rl4gp]

Nice!

[@InflatableFun]

How to know how much to inflate such a pool toy? Till firm or?

[@uguranoderKonig]

Aqesome ❤❤❤❤❤❤❤❤

[@honzatv10]

Any advice for stretching of whale?

[@TariTheYellowPyro]

Why does the pressure go down before they pop exactly?

[@HeathDragon]

Initially the material stretches portionally to the pressure. Eventually it reaches a point where it can no longer stay in equilibrium with the pressure inside of it. After that point it is in a runaway state that will result in bursting. As the toy rapidly stretches the pressure has to go down because the volume of the toy goes up.

[@kWeskWiEiWWy]

@@HeathDragon I think it's just a coincidence, consider an ideal scenario, for a thin-walled sphere, the stress on the wall can be estimated as Pr/2t, where P is internal pressure, r is radius, and t is thickness of the wall. Assuming that the deformation is elastic, the stress can also be expressed as Ee, where E is the material's young's modulus, and e is its axial proportional deformation. And since there's deformation, Pr/t should be changed to Pr(1+e)/(t/(1+e)^2) to account for changes in radius and thickness of the material. Thus, we have the following: Pr(1+e)/(t/(1+e)^2) = Ee. After some manipulation we get P = Et/r * e/(1+e)^3. Obviously as e goes towards infinity P goes to zero, with maxima of P=4Et/27r at e=0.5, so it will increase first and decrease afterwards even if the toy can hold the air. e=0.5 means the toy is 50% larger, and it seems to be in the same ballpark as what's in the video.

[@Jilocasindragon]

You were "curious" huh :D

[@aeroracer4875]

So if I understand correctly, since I have a new portable electric pump with changeable psi, I only need one psi to inflate my beach balls with?

[@HeathDragon]

One PSI would be a very firm beach ball. You might even burst it. The pump you describe sounds like it is designed for tires.

[@aeroracer4875]

@@HeathDragon really? The one I have can pump multiple different types of balls. It even has a rating listed for pool toys. 3-5 psi.

[@user-kq6zn4iq6d]

5:13

[@Orcafan_2002]

Poor whale, will you repair and reinforce it?

[@UtahShark8798]

4:13 gih

[@odayukina]

How Much NTEX Black whale POP Pressure ?