HIS REGULATOR EXPLODED UNDERWATER!
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- Опубліковано 5 жов 2024
- A diver was out filming his dive when all of the sudden the Divemaster's regulator explodes and air starts leaking out of the tank at an staggering rate.
Watch this video to see what we think of how he reacted to this incident and also to understand realistically how much time would any diver have to react to this issue if it happened to them.
Original video: • Explosion tuyau 2ieme...
Here's the Gear we dive with: kit.co/divetal...
That sign at the beginning is "current", I've seen it and used it many times in Europe and Asia. It's always fun when you signal "come closer, current's getting strong" as it looks like you're saying "come here, I'm gonna beat you up" LOL
It makes sense for it to be current based on his previous two signals...the way I see it is he said: "The boat is that way, we have to swim, against the current" - at least that's how I read it now.
@@DIVETALK Yes, that's what it looks like. "You'll need to kick your way to the boat because there's some current"
It means "swim against the current". There is another version, where instead of punching your palm, you indicate with two fingers on the palm to say "swim with the current".
In Indonesia we use the sign for strong currents... So he's saying currents are strong and we have to swim against the currents to reach boat...
We use that sign for current too. Wherever your punch comes from indicates where the current is coming from. Left, right, down under etc
He’s actually having to calm the people who aren’t in danger. They’re like trying to panic on his behalf...
He was amazingly Calm.
That guy was unbelievably calm. The way the slipped out of the gear and turned it around to check was really slick
Looks like the o-ring popped. Gotta give the guy some cred for being so calm.
Agree
@@DIVETALK dudes calmer than a bucket of ice. I was just waiting for him to deploy his SMB as well. Hahaha! Guy definitely shows how important it is with training, practicing skills and different scenarios. 👌 That's the guy you want as a buddy when things goes wrong. The girl did a great job staying calm and being ready with the octo. Great team together!
dude was more laid back than an ironing board
MAYBE he pops a xanax before diving? Lol
@@chronicawareness9986 Hahaha!
I went diving after watching this video. During the dive we heard this extremely loud bang. Since I watched this video I thought maybe something similar happened. Checked myself and my buddies, we were all good so continued the dive. Turns out that the military had set off a bomb which was what we heard. 😂
That’s crazy, whoa!
I don't even dive, but this is currently my favorite youtube channel. You guys make me want to go diving! Probably no caves for a me, but I love that I can tune in here and enjoy it anyway!
Awesome!!! Thanks so much.
I’m the same, they make me want to pick up diving. Feel like I wouldn’t be going in blind if I do decide to try it.
Don't say never. ;) I've been diving for two decades but a lot more actively the past few years. As my skills have grown so has my interest to go into technical and cave diving. Years ago I wouldn't have even considered it. I hope you'll do a try dive someday soon. :)
You won't regret it! The underwater world is beautiful!
Go for it! You'll never regret to do that 👌👌👌
DM: “Chill out, this happens all the time. I’ve got this.”
Ha exactly!
The level of calmness was almost he was about to roll his eyes. Like, aaa-gainnnn?
These guys complement each other in a knowledgeable, hosting mentality very well. Positive impact to both experienced and beginner divers alike
Made our day. Thank you!
The fish trinket hanging from his BCD is a regulator holder lol, I've seen these before at my local dive shop
The fish is so that he can be identified by the other divers as their guide. Seen that on a lot of guides (with duckies or other things). Really helps especially when you run into another dive group so you can always identify your guide.
The flat hand with a fist going into it, signal for "current"
Thanks yes we confirmed this also.
Can’t wait to see the footage of y’all testing this!!
Ha yikes.
C'mon you need to do this.
Nudge🤗 would really like to know what happens. My money is on it taking longer at depth
@@DIVETALK Nudge, nudge :) Would love to see a vid like this. Just to add to the conversation at the end as an amateur diver but also as an engineering student: I would actually guess that at a greater depth, the time before all of your air escaped the tank would be longer! It's all about the pressure delta. Using the Navier-stokes equation, you can remove the friction and stress terms to get Bernoulli:
v^2 = 2(deltaP)/D
Where v is velocity, deltaP is the pressure difference between the tank and the outside pressure and D is density of your gas. It of course isn't 100% accurate because it is just an estimate of what would happen in an ideal world in a hypothetical tiny point of gas flow, but it still shows the relationship between deltaP and velocity pretty clearly.
Of course, none of this takes into account that you have to breathe and consume higher amounts and greater depths, but that's a bit harder to estimate.
“This is gonna be so much money”
Not if we ALL watch it with ads on👀
Yea I pay YT extra to not have commercials says me a lot of time and I have ADD so would lose focus with too many commercials. I stopped watching TV 10 years ago for this reason.
I found you through Mr. Ballen..now subbed and loving your vids! I would be so interested to seeing you two react to the Thailand rescue of that soccer team!
Thanks and yes this is on our to do list.
About the tank opened depper, it would actually empty itself slower : if you were to open a 200 bar tank in a 200 bar environnement nothing would come out of the tank because there would not be any pressure difference. Worse if you were to open it in a 200+ bars environement it would fill itself with water. The pressure difference decides of the flow, the less pressure difference, the lesser the flow.
That's also way you have to "work" harder to breath at higher depth, you need to create the pressure difference between your lungs and the environement. It gets harder and harder the deeper you go.
You still have to create that ~6L of empty space in your lungs to breath so your muscles need to push against the environement. And those 6L will be filled with higher pressure gas, because it would be too hard for your muscles to keep a low pressure in your lungs. So you consume more because you have the same volume to fill but at a higher pressure.
Great video guys, a pleasure to watch!
Yep makes total sense. But we still wanna try and film it lol
@@DIVETALK And I still want to see that !! haha
This diver is a real hero👌👌Calm, focused, and you can see he is a really skilled diver!
Thanks for the video guys, and the accurate explaine! :)
We are waiting for the next video! :)
👌👌
Safe Dive! 👌🤘
Thanks for the comment and the support.
4 weeks, no dislikes, I can say that out of all of my years of professional UA-cam watching I have never seen such a thing. The algorithm should be strong with this one.
Thanks Chad!
His fish is so his divers can recognize him.
Yep
Hello Gus and Woody,
My take on the bleeding air issue is this; At 10 feet you are at 1 atm plus whatever 10 feet is of pressure pushing against the tank pressure. If it takes 55 minutes to bleed high-pressure through a high-pressure orifice and three minutes to push high-volume air out the low pressure hose, at 100 feet you are at 3 atm so three times the surface pressure pushing against the tank pressure. This will slow down the volume of air exiting the tank. This assumes you’re doing the cut hose test.
The reason this is opposite for regular diving is due to the fact that you’re second stage works on suction in conjunction with pressure as you are sucking on your regulator to allow the demand of air to flow into your lungs. This consumes more air volume than a low pressure open hose. (vacuum + pressure)
Thank you for these videos/reactions. Your professionalism, knowledge, and passion for diving is contagious. It’s is comforting to see how serious you take it and also how you remain humble and teachable. You’re leading the way to a new generation of divers. Keep it up!
Thanks for the comment and the support.
DiveBusters 55 minutes cut HP hose challenge. Sacrifice two hoses and show us!
We might have to make this happen!
@@DIVETALK wrong! It must happen!
I think cutting a hose at a lower differential pressure between the tank and the exterior of the tank would take longer than at atmospheric pressure, in other words it would take longer to empty the tank the deeper you go, we are not talking about breathing from the tank here , just a pressure release time.
@@guslevesque9369 I doubt it makes a noticeable difference. The difference in tank pressure between a few hundred bar and the environment (at most 5 bar) is too large to have any slowing effect.
The LP hose getting severed will leak a tank empty marginally faster than a severed HP. The HP has marginally less flow, pay close attention to the HP port and the end of the HP hose and it’ll make sense.
Deeper depth will cause the tank to drain faster in a severed hose scenario but not for the the reason you suspect. The additional ambient pressure on the tank itself does not “squeeze the gas out faster.” The leak will speed up at a deeper depth because the 1st stage is always automatically compensating for increased ambient pressure, it does this by increasing the flow to the LP ports (it should not increase pressure much, just flow).
I get so excited when a new video is posted, these 2 need to be more popular. Such an interesting subject.
Thanks so much for the support!
The unknown dive signal means (strong) current
Gotcha. Thanks!
Don't think of slow vs fast, think of volume or flow
High pressure = low flow
Low pressure = high flow
Learned that during my rescue diver course 😁
You guys are awesome at video breakdowns. Would love to see you two do a series on the cave rescue in Thailand.
Thanks!
Ah yeah! that beeping sound, his time's running out, an IED
9:02 We'd love to see the result of the test. I think this is an interesting knowledge for divers. Please try also to low pressure hoses :D
Will do.
That sign normally means there is some current.
This happened to me in Ko Tao - Thailand, with my yoke 1st stage - a reason why I swapped to a DIN 1st stage, much less likely to happen.
I had enough time to check my regs, put BCD back on, deploy DSMB, breath from my own air while checking SPG and do my safety stop while having a buddy closely incase I need air.
First of all kudos to the guide for handling the situation including the other divers and remaining calm.
We can clearly see that he had the situation under control, again big plus on here!!
Unfortunately I missing a safety stop and a DSMB deployment here.
Now we can give him the benefit of the doubt, as we can't see the whole picture, this was probably the end of the dive, the safety stop might have been concluded already, and another diver might have already deployed a DSMB.
But it's important to mention that even if this happens, you are still able to deploy you DSMB and do your safety stop.
great job on the video breakdown, thx so much for the content.
Yep confirmed . It does for sure.
14:00 Guys, the pressure in LP hose is set by the regulator to c.a. 10 bar above the pressure of the environment. So, it depends on the depth.
When you ironically become really interested in diving from watching Mr. Ballen videos
I love watching Dive Talk. That will be as close as I get to Cave diving. I get nervous in my bathtub.
My regulator mouth piece froze up @ 98ft. I was with 10 people including an instructor at Dutch Springs PA in the middle of winter. Water temps low, don't remember how low. One second, I was checking out this big truck, then suddenly air started pouring out my mouthpiece and I accidentally hit my mask and they flooded. super scary. I honestly thought I was done for. But the instructor quickly grabbed my bcd by my chest, took my hand and placed a regulator in it. I take a breadth of the regulator and somehow water snuck in, I started choking but I forced myself to cough in the regulator and eventually continue breathing. I could feel we started to ascend(remember my facemask was full of water.). On the ascent I finally cleared my mask and started to feel much better. I'm just glad I was with a good instructor and glad I didn't panic(I mean "apparently panic", cause I for dam sure was panicking but only in my head).. I read later this can happen but I was unaware before the dive. Now I know why the instructor carried an extra pony tank with him on the dive..
I'm a bit late to the party, but my thoughts regarding the change of flow speed in relation to depth: The added air consumption at depth is only related to the fact that you need more volume to fill your lungs against the pressure at depth. But because the increased water pressure means a smaller pressure delta between tank and environment, the flow speed should be slightly lower at depth. However, with a full tank that difference is pretty marginal, e.g. (10 meters) 200 bar - 2 atmospheres of pressure vs (110 meters) 200 bar - 12 atmospheres - which is probably already to deep for this kind of test.
Good job pointing out the volume thing
Been here since 500 subscribers my man Gus and Woody going to blow up soon!
We appreciate you a lot!
got here shortly after you, around 1.2k subs or so, I swear in a week they quintupled it!
Gus and Woody are just super entertaining!
I think cutting a hose at a lower differential pressure between the tank and the exterior of the tank would take longer than at atmospheric pressure, in other words it would take longer to empty the tank the deeper you go, we are not talking about breathing from the tank here , just a pressure release time.
Agree
Fist on flat hand is problably for current.
Yep confirmed that’s correct.
I know nothing about diving nor would I dare! It fascinates me & I love learning from you two!
Omg Gus, that was an awesome analysis of the video! You guys are amazing! Love you and much respect!
Thanks so much!! We love you too.
Found this channel on my recommended and I've been addicted to it. Every video I watch I learn something, great channel. My mom and I are open water divers and my dad is a divemaster. Diving is awesome and I love it, it's like stepping into another world. One question do yall spearfish?
No, but we do kill Lionfish whenever we can.
I’m not a diver BUT wouldn’t the air last longer if you are at 100 feet instead of 10 feet? Because the water pressure against the bore hole you just mentioned (in the HP vs. LP hose) would increase?
My first theory is that an increased water pressure against the air, could increase the resistance for the air to come out of the hose, therefore it would take longer.
My second theory is that the gas would be more compressed at 100feet than at 10feet and that would result in the same volume of air to escape, and since the air is compressed, it would expand during the trip up til the surface, so the air volume (at sea level) would be greater, therefore emptying the bottle faster.
I’m not a diver and not a physicist and not a gas expert in anyway- this would be an excellent myth to send to the people at “MYTHBUSTERS” to solve, if they haven’t already done this experiment, it would be perfect for their show. And as you know, they both do the experiment AND teach us the physics behind it.
If this experiment hasn’t already been covered by them, and they can’t do it on the show, then I would love for you to do this experiment and teach us ordinary people more about diving and the physics applicable under water. 👍🏻🙏🏻
Always love your videos. Crazy informative. I never even considered diving before i found this channel but im 100% confident to actually learn one day now because of you guys.
Great to hear!
That dude was so calm during this whole situation. Really top notch
Great video! I don’t dive but I am fascinated by every conversation you guys have! Thank you for doing this!
More to come!
Been diving since I was 11 yrs old - currently on advanced open water which i got when I was 15yrs old, I might be wrong but to my knowledge:
1. The punching sign on palm means either we’re going to swim against the current or like danger stone fish thing.
2. Thumbs up - actually means go up / abort dive.
The lady is signaling is saying the group just comes up. The beeping side must be the man’s dive watch signaling a safety stop.
3. Good that he’s maintaining bouyancy. what people dont see is his buddy gave him the octopus so he can shareair while they do a safety stop so he doesnt depend on the original tank. See the yellow thats second stage for emergency. Doesnt look to be deep enough. Like around 0-30ft.
4. Ive experienced this, like literally my dad and I were I at 60-70ft he literally ran out of air i had to crawl and he didnt have to signal he forgot to check his gauge and i literally got my octous and slapped it on his mouth. We still were able to do a saftey stop at 20 ft. Faster than normal ascend obviously, but still had 400 psi left on the tank. I had 1800 left and had to calm my dad down. I always save air for emergencies like these. You’ll never know.
What I’ll never repeat would be cave dives. I remember the cave dive plan goes as deep as 80-90ft and there are 3 air pockets in between that we went through, flashlight went out. No sweeper, Couldnt see until I remembered I have a strobe on my camera rig, turned it on from sleep pressing random buttons and was able to turn on video, then got some light last thing I saw was 2 small bubbles and just swam to it calmly until finally saw more bubbles then glad I was back with the group
This looks to be in the Philippines. Many DMs use the punch sign as signal that there’s strong current.
I think it would be better for the audience if you made the video screen larger with you and Woody smaller during commentary. This way we can see what is going on better along with you. Just a suggestion. Love the videos!!!! Keep it up!
Thanks for the suggestion. Gonna look into this for sure.
That dude is the definition of zen.
Love Gus and Woody. Their passion for diving is so captivating. I can never wait for the next upload. Thank you for the hard work guys!
More to come!
It's gotta be an O-ring but I can't imagine how it would rupture like that? Props to the diver, very cool-headed. I think you're right, at 100ft the air would be gone in under a minute.
Actually at 100 it will likely go slower due to the ambient pressure increase.
@@DIVETALK really? I'm having a tough time wrapping my head around this one. I would've thought it would be faster under pressure. Good job I haven't dived in years. I think I need to brush up on my Boyle's Law! lol Thanks for the reply. Enjoying your videos. Cheers!
I could watch you 2 react to anything. When woody says about his O2 blowing gus starts laughing his head off. 😂
I know right! Cmon Gus. Have some sympathy on this old man (me).
That fist to palm signal in some regions is used to signify strong current
Thanks!
I'm just jealous how little weight that guy needs. Makes it so much easier to take off you gear!
You don't need to sacrifice a hose to test by the way. There are video's showing a cut high and low pressure hose in the pool. But it would be fun to see you try the experiment yourselves.
But it would be such a “blast”! Lol
I believe the hand signal at 1:37 means current. I've used it a few times but I'm not sure if that's pretty international (I'm from Spain btw). It seems that the guy is telling where the boat is and that they have to swim a bit because they drifted with the current.
Yep confirmed that it does.
We use it like that also. It means strong current / we need to fight the current. I'm based in Belgium.
@Dive Talk I once had a buddy whos o-ring blew up under water.
We jumped into the sea a fair bit off the reef (after taking a compas course to the reef), as we were preparing to go in looking for manta rays. We saw them from the surface and decided to go in with them and then back towards the reef. Busy area with lots of boats, so we all went straight down to ~15ish meters.
Only 2-3 minutes into the dive I look at my buddy as theres loud noice and see bubbles flowing. Shes even more confused than the guy in this video, thinking its a speedboat going over us or something similar. When I check whats going on I see bubbles flowing from the tank valve, so I check her air gauge and offer her my octo, whish she shrugs at, until I show her how fast her gauge needle is moving. She take my octo, I turn her tank off, trying to reseat the first stage as I thought maybe it wasnt properly seated and realize the o-ring is screwed.
From the time I saw bubbles to the time I shut her tank off, maybe 2 minutes had passed and she was down to 120 bar in her tank.
Grabbing each others bcds and her breathing from my octo we held the depth (due to the busy area above), swam back to the reef, did our safety stop and was back out of the after 10 minutes. 300+ dives ago its still one of the more interesting ones. Helps that the few minutes we got was with 3 manta rays of course.
Very impressive, problem noticed, stayed super clam, removed problem equipment and calmly started troubleshooting to see if repair can be done or not.
This guy is missing his thumb!! Legend has it he cut it off and kept a poker face the whole time because clearly he has balls of steel!!
Agree
“If you don’t get to the boat, I’m gonna punch your hand!!!”
If the guy has a wing and a second stage with a swivel it's not his first picnic.
The high-pressure hose is for your pressure gauge only so the inside diameter is like a needle. If you try it, your tank will need a visual inspection after.
Might want to think about a gear maintenance episode. Everyone talks about getting their regulator serviced, I once had the O ring on my BCD inflator stick in the open position, the O ring ripped and stuck the valve in the open position. I was a newbie diver and tried to fight to stay down while me BCD inflated and I started shooting to the top. Dive master grabbed me and calmly disconnected my inflator hose and manually deflated my BCD, and all was fine... Moral of the story, don't forget to service you BCD !
Great suggestion!
Prime example of keeping your cool. Great lesson.
These are the types of persons I like doing excursions with... cool headed, calm and collected. Panic never helps you or anyone survive. I've been on enough adventures with folks who were not mentally fit for demanding situations and I don't ever do that any more. I don't go on adventures that will almost surely be very demanding with people I don't know and or who I already know can't handle themselves, I'd rather stay home. Having well suited individuals around you who know what to do and how to act if things go sideways always makes for a much better and enjoyable experience even if things do end up not go according to plan. I don't know who he is, but much respect to this guy who made a tough situation look easy.
Agree totally.
Love the videos, I haven't dived since I was a kid and watching the videos makes me wanna get into it again so much. I did a university report this year on Bernoulli's principle and I didn't think I'd see a relevant use for it so soon, so basically with fluids including air. Pressure and velocity are inversely related, so the higher the pressure the lower the velocity and vice versa. I sum it up really quick and Im far from an expert on the subject but I reckon that would explain the 55 mins, 3 mins and 13 mins situation. Im guessing the pressure straight from the o-ring would fall somewhere between the high and low pressure hoses and therefore the velocity would fall somewhere between the 2. Love the videos, If I give you guys something to look up and research Im happy lol, you guys have brought a passion back for going diving in me so thanks man.
Awesome!
Man, I hope I could react to that situation half as good as he does! Shows how much a diver can benefit from experience and training.
He was fantastic.
Another great video. Makes you think about how it all works. Counter intuitive at first glance, but so logical when you really think about it.
Yep agree.
The air in the LP hose would generally come out more slowly at a greater depth. We know the reason you use air more quickly when you are deeper is because the 2nd stage supplies you air at the ambient pressure. So when you are deeper you draw air out at a higher pressure. But the pressure internal to the LP hose is regulated only by the 1st stage (100 -150 PSI depending on your regulator model). So in that case the flow out will be determined only on the pressure differential between ambient and the LP supply pressure. So if you are deeper, that differential will be smaller. Some higher end regulators will increase the LP supply pressure as you descend in order to compensate for the decreased pressure differential at depth. So results will vary.
I guess there’s only one way to find out for sure
the reason why is the orifice size on HP hoses is much smaller than LP hoses
Makes sense. Thanks!
Way too scared of deep water to ever really go diving, but if I did I would want the dude in this video to be my instructor. Incredible.
I'm not a diver, but been binge watching your videos the whole day! Super interesting! 👌🇧🇷
Thanks for the comment and the support.
When a hose explodes you literally craps your pants! I remember when a colleagues spg exploded and I more or less had to change wetsuit. Even if I was told so many times it can't happen but it sure can! I guess there's a good reason why you turn your spg away when you turn on the air valve on your tank and that you learn it during your ow-course. Lol!
Yep I would be frazzled for sure.
I would very much love to watch videos where these two test equipment failures and how long befor the tank empties at different depths etc. Also the person in this video was so calm. Much respect to them for not shitting themselves and going full panic mode
Wow so much respect for this man. What a state of mind to stay so calm and even take time to calm down youre fellow divers. Just to take time and look at whats going on first, before the panic takes you over, and you send Everybody into stress and worries, thats Amazing. Super interesting video, just awesome to listen to and watch.
Just for info, in the original video they are saying it was indeed a LP hose exploration that happened at 10m deep at the beginning of the dive. So that’s why they did not worry about deco.
(And the dive place was in Philippine where material hazard is unfortunately usual)
MrBallen told me not to dive or hike or do any activities but i enjoy watching you guys I am more of theory guy then practice guy
Well we are glad you are watching us. Thanks for that.
Awesome video as always guys. The fish toy is buoyant, so it seems like it's for his group to always see and identify him, follow the DM, never get lost. We drift dive usually in Sodwana, South Africa so the DMs carry reels to buoys that the skippers up top can follow, sometimes it's a bit of an exercise to identify the DM from just that.
Wow.... I know nothing about diving or anything to do with that world but seriously, shout out to that diver for keeping his cool like that. They should nickname him the Iceman because I would have been freaking out. Also, thanks for the videos you guys do! Very entertaining and educational.
Absolutely, the Iceman.
Such a great video! I'm a newer diver, and these videos are incredibly helpful (and entertaining)! I learn so much each time I watch your content. Keep the awesome videos coming!!!
Awesome. Thanks so much for the support!
if you are at 40 metres and youre bottle is "empty" in my opinion if you go up you will have 36 Litres of air with an 12 L tank all the way up so maybe even if youre tank seems empty at an certain depth as the pressure lowers (diving up) you will have more air because of the lower ambient pressure against the bottle pressure so at 40 metres you will have still 48L of air inside the tank thats 4 bar so theres no option to escape with safety stop from this depth. But i think also theres an option to escape from 12m if your tank is (wtf ever happened) "empty". Even alone you can escape this, but you got only two or three breaths to go up (12 L or 7 if you got small tanks). We called this "emergency ascent" from 5-12m as i made my OW in Thailand, but we only made it with air. But i also know how it feels if theres no air anymore in the bottle as we trained a lot and "simulated" some emergencies.
Another DIN vs Yoke debate. Go!
Hello from Argentina!! I really love you guys. I enjoy so much watching your vids, let me tell you, you two have everything to succeed! Seem so nice people. I m not a diver, never will be but the topic it interest' s me so much, i find cave diving captivating and you 2 are the best. I wish u all the best! Love !!
Gracias Adriana!
I'm not a diver, but I love y'all's videos! If you do the experiment, please film it! 🎥
We will for sure.
I think that you would be surprised at lower depths that it may not come out x atmospheres faster. Because the water pressure is so much higher, and since the tank is no longer a rigid closed body that has its own pressure environment (the water can now directly push on the air and affect the pressure), I think that even though MORE air might be contained in each bubble of air, the rate at which these bubbles want to escape will be reduced. So it would be very interesting to see, and to see which force overcomes the other. I suspect it will come out still at a faster rate, but definitely not scale linearly (i.e. 2x atmosphere = 2x faster or y=a*x). It may be more inverse quadratic, i.e. y=a*sqrt(x)
You can alternatively think about it like this: The air coming out has to work x times more hard to get out vs. the external pressure
Exactly what I was thinking
Maybe you have seen or already know this but I believe they have done this test by lake hickory scuba and there are 2 tests to I remember correctly. Love watching you guys always entertaining and good info to talk about.
Monday’s are becoming my favorite day thanks to you guys!
Thank you so much.
I'm no physics or diving guru, but I think Bernoulli's Principle in flow dynamics may apply here. The increase in the loss of air in the low pressure hose is further enhanced by the large internal diameter of the hose in comparison to the HP hose. Bernoulli's principle states that an increase in the speed of a fluid (applies to gas as well) occurs simultaneously with a decrease in static pressure or a decrease in the fluid's potential energy.
Again, love the video! You guys are awesome & I at the moment this is my favorite UA-cam channel! Thanks again & greetings from Austria :)
Our pleasure!
That Divemaster is one cool cucumber. No panic kept the other two, calm and controlled the situation. Excellent job.
As for the experiment, Bryan actually did it in a pool in 2018, because one of his subscribers had the same type of failure happen to him at 50'. And because some folks did not believe the math when converted from 10' pool to 50', he then did it at fifty feet in Lake Hickory in 2021.
Pool video: ua-cam.com/video/rLr179pej4Q/v-deo.html
Lake at 50' video: ua-cam.com/video/QISP80sT9Fg/v-deo.html
Wow, that guy must be immune to adrenaline.
we do use that fist against palm signal if there is a lot of current. usualy when there is to much current for a diver, they give that signal. meaning you are swimming against a wall, staying in place instead of going forward. doesn't seem a lot of current in the video though.
Exactly, the bubbles are going straight up and when they surface it looks like they were close to shore. 🤷🏻♂️
I hope next time I'm having a nightmare this guy flys down from the clouds and gives me the calm gesture while holding his bubbling pack in the other hand
Yet another awesome video. Always looking forward to these, great work guys 👍🏼
Glad you like them!
My first thought was that this guy must free dive. He seemed so calm
Not sure where you are coming up with the idea that low pressure hose would be different from high pressure hose as far as air escaping, but remember that the air is still moving through an area at a set rate. The deeper one goes, the more the air compresses and would still go through any aperture at a set rate. Kind of like that old wives tale about using a nitrox tank and expecting to stay down longer when in fact, it just depends on depth, tank size, and breathing rate. The main factor being the breathing rate. Same tank with same diver will empty at the same time regardless of what air was put in it. Still, this guy must be a divemaster because divemasters are just boss. Signed, senior divemaster:)
LP hose has much bigger opening them HP hose so it should lose air much faster.
@@DIVETALK How do you plan to do this test? You guys talked about testing underwater, but is that a good idea? Perhaps it would be better to stay on land and do the testing that way. Probably better to gauge the air loss that way and would make it more scientific. What do you think?
Brah, I don’t even dive and I watch this show. You guys do a great job explaining things so that the noobs and inexperienced people like myself actually understand. Much respect ✊
Made my day. Thank you!
I actually think the opposite, if a value fails at more ATAs it will leak slower because of the higher external pressure will increase resistance. Nice to test and learn :-) Great learning videos and love you guys and your energy … keep it up
That’s what I figured, but I would be interested to hear if it’s wrong what is the right answer? Any engineers here? 😂
I think this as well basic physics like 2+2 is 4
@@CaltaTomasAnd yet it is incorrect. First stages are pneumatically balanced. That means at the surface the intermediate pressure is around 10 bar. As you descend ambient pressure increases, but so does the intermediate pressure. So at 40m, you will have an ambient pressure that is 4 bar higher than at the surface, but your first stage now delivers 14 bar of intermediate pressure. So it is still at 10 bar over ambient and will leak at the same speed.
@@twoknife yeah, but without pressure balancing, it would leak slower. Like 2+2 is 4.
@@CaltaTomas Yes, theoretically that would be correct for an unbalanced regulator. However, almost all regulators these days are either balanced or even overbalanced. Overbalanced would actually leak even faster at depth as the intermediate pressure increases faster than the ambient pressure.
I have had my O ring pop at 30 ft during a drift dive. I thought a boat started its engine over me. I took my buddy's Octo and did just like that guy, shut my tank, slowly got to the surface. Reset the O ring, then we went back down to finish the dive. I do hope you guys do the test. But maybe just leave the ports without plugs and open the tanks at 100 feet, instead of cutting the hose.
AT least one diver had a A-Yoke first stage, and those are pretty prone to blow an o-ring. Since he could turn the valve off and the leak stops means it was not a tank neck blown o-ring The description says something about 200bar, which increases my thoughts that it was a A-Yoke first stage
I moved to DIN valves/regulators to avoid this kind of scenario
John
Another great vid guys…I really enjoyed your Mr Ballen videos…could you do more? He has lots of diving stories. Thanks, Linds, Scotland xxxx
More to come!
Staying calm helps one address issues. Don't seem to be too deep either so not as stressful as needing a long time to decompress.
Woody, Gus, I cannot stop watching your videos. I have one video on my TV playing, and another on my phone🤣 You two are the best, I am loving the content as always!
You are the best!
The fist on the palm indicates 'current'. So the DM was probably notifying the group that there was a current up ahead.
Yep this has now been confirmed. Appreciate the comment .
@@DIVETALK no worries! Big fan of you guys! Keep the content coming! 😍 Love the cave rescue video the most by far!