Pros And Cons Of A Rebreather
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- Опубликовано: 20 июн 2019
- Pros And Cons Of A Rebreather
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Rebreathers are often seen as a dark and scary side of scuba diving but they’re starting to creep their way into the recreational side and you can even do your PADI Open Water on a rebreather if you like. Normal scuba where you blow bubbles is called Open Circuit or OC because every time you breathe out you lose a lungful of gas. Rebreathers, recirculate that gas and turn it into fresh air, so they’re much more efficient at gas management. Your exhaled gas gets passed through a scrubber to remove the CO2 and sensors analyse the O2 content to top it up. By this method you can breathe the same lungful of gas over and over again until either the scrubber is saturated or you run out of pure oxygen to top it up.
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When you’re rushed by a bunch of noobs asking about your rebreather, it never gets old. You smugly say how it works and how bad ass it is and don’t mind at all. It’s great.
My heart wants a CCR
My wallet wants an OC
🤣🤣🤣
i went with my heart and my wallet is thinner, but no regrets here
OC.. forget to turn the tank on and it's no air oops turn on valve.
CCR ...forget to turn on gas and you can breathe..for quite a while as the o2 level goes down.
Absolutely.. i want to switch to a ccr for over 15 years now. Still cant afford it..
My wallet wants me to stop flouting nature and stay on land
Pro: You don't scare off the sharks
Con: You don't scare off the sharks
@@paulrichardson2554 Yeah just a silly joke
Haha. Actually, I've found that talking to sharks scares them off in a quick hurry! 😂 I had one getting awfully close to me on one dive. I told him to get away from me. I've never seen a shark move so quickly!!!
Show us the equipment! Preferably in use!
Pro: You can stay down longer
Con: You might stay down much, much longer
Fish bait and crabs food.
Brilliant 👍🏻
Looool
I'm convinced... someone give me $10K so I can buy a rebreather.
We have heard on the grapevine that a Nigerian prince has some money knocking about...
I have 19 ill give you one if you want
@@funkedreality plz do 😂
@@funkedreality yes please!
Or you could get a old Soviet one for $300
Also, in a rebreather, the absorbent makes the gas warm as it absorbs CO2. That is useful in cold water. (But it can be a nuisance in industrial rebreathers used out of water.)
Rebreathers only really save money if you are consistently diving Trimix. But then again one doesn't go into diving to save money.
Probably the most interesting thing about rebreathers is that you realize just how much you fine tune you buoyancy with your lungs while diving open circuit.
Depending on the cost of nitrox it can also start to save money just takes longer. The biggest benefit is not having to have 3 or 4 sets of cylinders all with different mixes depending on who where and what your diving. Which also saves money and time.
@@DiveBC You would have to dive a lot to save money on nitrox. But it does simplify gas planning, as long as you have enough of an appropriate bail out, it will mix the best mix for that depth.
@@Teampegleg as I said depends on where you are. In Vancouver bc nitrox can cost nearly 25$ a cylinder so it does take time but does pay for its self in the long run lol
@@DiveBC Wow, I'm paying about $6 per tank on a card. And about $10 per a tank without.
@@Teampegleg and that is what I pay in Nanaimo bc but not all places are as cheep. Air prices in Vancouver are between 12-15$ non air card.
A very informative video on the pros and cons.
I currently dive a Hollis Explorer, a Scuba Force SF2 in side mount configuration and a Triton MCCR. I'll am looking forward to more videos from Simply Scuba and comments to add to my continuous learning process.
I just got my OWD and I‘m hooked. I probably won‘t even touch a rebreather for at least the next 5 years, but I want to know everything haha
More rebreather videos please! Currently in the market for my first rebreather and I'm pretty overwhelmed with it all. Especially the whole side mount or back mount options
I teach Hollis Prism 2, they now have a lot of options not hard to learn and they are on the lower end of cost scales.
Awesome video! Appreciate the explanation. I love learning about this stuff! Maybe include a few more pics, examples with you on camera in the future, just a suggestion. Keep up the great work!
I am diving the rEvo Rebreather and enjoy it a lot, from small lakes until the northsea, i always use it. Sometimes i hear people say that the rebreather is only for deep and long dives, but this is not true at all, i haven't looked back since i purchased it
I just got quoted $1,900 for service at rEvo factory. Just warning you about that expense.
I first heard about rebreathers as a kid watching a rerun of a _Sea Hunt_ episode from the late 1950s. It's weird that all this time has gone by and the technology is still kind of fringe.
Yeah！Finally！！ Awesome Guys！ Love it！Please do more rebreather video~
Glad you loved it @Qiukai Pan! We do have more on our list!
Thanks for the heads up , I was looking for some info on rebreathers, being an old school diver they wouldn't be for me now, but the knowledge is always good.......................
I can't wait to get into this type of diving. Living on the beach in Cabo with this will be awesome.
Im new to diving, in future videos could you show examples of what you've explained. Thank you and great info.
Big negative IMO, being narced, and a malfunction where you’re not scrubbing your CO2 symptoms are very similar but the latter is much more dangerous as to how fast it becomes deadly... Jill heinerth participated in a study to try and determine how long an experienced diver had from noticing something wrong to the point of “no return” and the results were scary as all get out!
Zebra Strong super deadly. But mine (and most) have redundant alarms for that :)
They are scary if you dont have training. I felt the way you do until I became a Prism 2 diver then, an instructor for this unit.
Totally agree with the training bit however it doesn't help that 10% of rebreathers kill their owners due to failure of equipment or their training .
Saw this happen to someone in the club where their unit wasn't scrubbing due to not assembling a part right. Thankfully they were assisted and helped to the surface and were fine. Though the discussion afterwards was that that particular brand had this design fault whereas others would not function at all as a fail safe if it were not assembled correctly. Definitely an area to be careful in all right!
The equipment failure is extremely rare, most of the time human one involved. The units are quite ahead of their time.
Great video guys! I love my rebreather... Actually I'll never go back to O/C unless I'm bailing out. I use the Dive Rite O2ptima with the stock shearwater petrel electronics and a shearwater perdix as my bail out computer... I almost forgot my 3 or 4 hour underwater times are amazing too
Why do so many people die from these things?
@@michiganwoodsman2199 I don't think any more people die on CC than OC these days. The tech has improved a lot. With that said, there is a lot of more complications with a rebreather. OC is essentially "plug n play" whereas rebreather requires legitimate training
One thing I remember from watching a video on BUDS (Navy SEAL) training was that if you flood the circuit, the water can react with the chemicals in the unit and create some toxic gasses. Particularly if you remove your mouthpiece and allow water into the system, or as you said, change the pitch of your body so you're not horizontal. Is this something you've heard of? Have you ever heard of it happening to somebody? Or was it mentioned in your training?
Very different chemicals used in commercial
Yes, That's why there's a Shut off Valve on the Regulator. (NAVY "EOD" DIVER)
Great video 👌
What happens if you throw up in your rebreather can’t really purge it can you. Also is there a secondary on the units in case of emergency
My dad owns a Drager ray SCR and a divesoft CCR Liberty.. i already tried the SCR and i am gonna try the CCR as soon as we get our self a helium tank
I remember this one time I was on vacation with my family in gulf shores our hotel had a pool and hot tub outside. I got in the hot tub. Took a good breath and went under. It was so warm and relaxing.. I didn't feel like i needed air.. I probably stayed down for about two minutes.
@Colton Alamond how long could you stay in the hot tub with a rebreather
@@ObamaFromKenya I could tell you this much. If I had a rebreather on. I could've stayed under for almost three or four hours I'd guess. It's already warm so your body isn't using very much energy so you don't need to breathe as much.
0:09 where do you see PADI allowing open water training via a rebreather?
On their website it says rebreather training has a prerequisite of Open Water.
I started diving on a DESCO rebreather over 50 years ago.
Is Lungfish Rebreathers any good? I liked the demo and compact design but didn’t know what the performance was like compared to other rebreathers on the market.
The Hollis Prism and Posiedon Lunar 7 can be purchased for around 5k expect to spend another 3k on electronics and training
The biggest con to rebreathers I can find is that your buddies all must have rebreathers too. If not you'll be diving with friends on traditional scuba and you would probably want/need to resurface at the same time all of your friends or you'll just be under the water by yourself. Change my mind.
I do it all the time, we sometimes dive with different purposes and with different mixes. Each person is equipped to dive solo, we meet again on the boat and tell each other everything that the other person missed.
"No really, I swear I saw a mermaid and she kissed me."
"Get some mix man, you were narced"
I've done both (solo and with open circuit. ) buddy types. To answer bottom time, be 1st in. Or find buddies on twin set/sidemount guys.
I know the conventional thinking is "no solo diving blah blah blah" I'm not only a Prism 2 Instructor but also a solo diver instructor.
The chances are if your firing up your rebreather you won't be doing a single tank buddy dive trip. Another point is. Show up with one and be expected to answer a bunch of questions and you just might find out there is a guy on the fence in your group that was just pushed into the ccr yard
Yeah, for only recreational dives, it’s hard to justify pulling out my rebreather in warm tropical water. Anything cold and long or deco, if I have the choice, it’s cc every time regardless of team comp.
However, if we are doing a tec dive, even air dil, I’ll break out my breather in mixed teams, as I stay more hydrated, warmer, no gas switches and have a larger safety margin when we dive an oc plan. Also, for the cost, even at air dil depth, you can put some He in the dil and be sharp ok the dive, which is hard to justify doing on oc when not needed for depth.
Good video! You should do a video on the different manufactures! I own a Liberty Rebreather by Divesoft!
Great vid
I have used one. They were royal navy issues I did not buy them.
That was during 1980,'s.
Simular to ww2 type siebe gormon.
You had a bag on your chest containing scrubbers and crystal s. And on you back two bottles equivalent to 7 litres I guess O2.
Hope it helps.
my dive buddy uses a rebreather and he loves it so i had a try dive on one and felt really uncomftable and genrally didnt enjoy it so gonna stay with sidemount oc lol
@JASON VOORHEES its the expense of it as well mate
How secure are rebreathers? If something malfunctions at 100 feet and you begin to breathe in more unscrapped CO2 at high pressure without noticing it, will you be able to survive long enough to get to the surface? Will you even notice?
I thing it could be very dangerous in case of an emergency, because the total amount of air you have is ONLY ONE BREATH, so if something vent wrong, you do not have much (enough) time to get to the surface...
Yes you are right, that's you would carry OC stage bottles for bailout
1:56 dpo:depressurized o? can anyone explain this?
subtitles 2:23 "if you die frequently" it should read "dive"
Song?
I can't understand what #1 is @5:41 for a rebreather?
Can rebreather used for 10 years old kid?
You guys are awesome... I learned how to scuba just by watching your videos... and I got all my gear from old rentals... two thumbs up buddy!!!
Just kidding.... hahahahahaha... HALL'S INTERNATIONAL DIVING INSTITUTE
Agreed, but the rebreatger is for divers who dive very very often or better say nearly every day! All this mess is extremely expensive at the end of the year! I tryed and really I liked it, but I am not every day diver! For me in any 2 weeks to have two dives per day is just fine! I enjoy more nice activities in this life than only diving! Great video again! 👍👍👍👍
Would be nice to have a visual on a rebreather, I still have no idea how they work.
The Wikipedia article on them has good diagrams for most types of rebreather. They go quite in depth.
So rebreathers only cost a few dollars?
Does your shop sell them? How much additional training does one need?
The training depents on the type of rebreather. I know some brand won't even allow you to dive with your own rebreather if you don't pass the training.
I don’t know any that will, nor should they. It’s like tec training, you pay for the instruction, but have to earn your certification. You can’t be diving one outside of a competent instructors presence before you earn that certification.
So I wanted to see what a rebreather is. And here I am watching yet another video about rebreathers without a single image of a rebreather in it. Whaa..?
I heard that with a rebreather you have to be careful not to make too much physical effort because you exhale too much CO2. It means that the rebreather doesn't have the time to recycle your air in an efficient way. You can get intoxicated with CO2.
I never paid for the kit. Did really think about cost. Went from drager to divex must be £10,000 and some.
I know the stealth/ military use of rebreathers are huge. The problem with open circut is that people can trace you by your bubbles. Also the noise, try and sneek up up on someone with that, good luck.
Like everything else, it simply depends on the type of diving you want to do
Id love to test a rebreather some day
If you are in Florida, Dive Rite does demo days, including rebreathers, a few times a year. Along with a few other companies, with Cave Country and the active tech community in South Florida we have a lot of companies doing demos here.
Team Peg Leg Holland 😃.... across the pond 😂🤪
don't know if I want to breath the same air I just exhaled, because I don't know if bad breath is cleaned in the scrubber. ):
!!!!!!!!
Ew 😂
I’d recommend you get that halitosis treated, independent of rebreather usage. It’s disrespectful to others when your mouth smells like caca... and embarrassing.
Just one question, can you vomit with a rebreather? I puke almost every time while underwater but I would love to do the rebreather course
it's not recommended... 🤢🤢🤢
Anything that comes out of your mouth on ccr comes back around in a relatively short period of time.. Including that morning bagel... If you think that bagel was nasty the second time around, it’s not gonna get better the third, fourth, fifth... 🤢
@@zebrastrong9291 🤮🤮🤮
Simply Scuba Exactly! 🤢🔄🤮☠️
@@zebrastrong9291 imagine it's like a cream cheese bagel 🤣🤣🤢🤢🤢🤮🤮
As I recall, you are in trouble if water gets into your mouthpiece yes? That's a bit scary.
As a Prospective Marine Biologist.. Should I go for a CCR or OC?
You might already know some things about diving I have no idea of course.
If you aren't a certified diver yet no need to wonder about that. Anyway you wouldn't normally be going very deep unless you became some kind of specialist. Even in that case using a CCR you will still build up nitrogen in your blood, (unless using one of the special CCR systems but even those you still have a fairly restricted dive time if you go beyond recreational depths). Typically a recreational diver is advised by instructors to stay above 80-100 ft. If you become a marine biologist who does do diving as part of the job you'll be diving from a boat with a compressor anyway. With an OC system using normal compressed air if you limit yourself to max 80 feet using an 80 CuFt tank you will be well within a no-decomp dive but that's assuming a long time between dives to be on the safe side. You shouldn't do multiple dives per day just because each dive is within no-decomp limits, unless they are shallow depth of course all the details are in dive tables as maybe you know? Many people will tell you they exceed these recommendations and never have de-comp symptoms but studies have shown that damage can be done even when there are no symptoms.
@@dannygjk Thank you for the consult. I am a diver. My concern is scaring off fish while setting up cameras reefs (should have mentioned this before). Because OC makes alot of noise and I would hate to be a disruption.
But CCRs as far as I know are costly on a Biologist Salary if it isn't included in the project costs
Why am I here? I swim about as well as John Marston
Not to worry. There's a PADI speciality for that.
Im new here, subscribed. Great channel👍
Welcome rocket queen!
@@simplyscuba do some video about deepest scuba dive, please and thank you
@@rocketqueen7355 Ok we'll see what we can come up with! :)
At least this video isn't 30 minutes this week!
See once i get my enhanced air cert ill be looking at a rebreather cert
So how the hell do civilian CC systems scrub nitrogen from the system? How do you dive on mixed gas? I've always wondered that. You should have touched on purge procedures and O2 toxicity that comes with re-breathers, a lot more important then how cool people think you are at the dive site.
>So how the hell do civilian CC systems scrub nitrogen from the system?
they scrub CO2 using a chemical
>How do you dive on mixed gas
Fill the dill bottle with trimix instead of air and set computer accordingly
>You should have touched on purge procedures and O2 toxicity that comes >with re-breathers
These are different on each unit but the computer and HUD will warn of a pp02 issue
a gem in a pile of Missouri clay
Another pro for tech divers - gas is expensive. Rebreather takes much less of it
Do they have a normal alternative second stage?
You can have a BOV (Bail out valve) but never been a fan of it. That allows you for breathing the Diulent gas for example. Your safest bet however is your bail out gas carried in the stage.
@ so if my buddy has a problem I can give him the fresh air out of my tank?
@@alle_namen_schon_vergeben708 In the event of your buddy running out of air (hard do see how that happens but sure), yes he can go for your bail out. The issue at hand is, that is YOUR bail out, so it is YOUR backup aswell, and in the unlikely event your buddy runs out of air and you break your CCR to the point of no return, your buddy is out of luck
@ well I would say that is a con too. Isn't it? 🤔😅
@@alle_namen_schon_vergeben708 Depends on how you see if. If we are to combine two scenarios:
Diver 1 out of air
Diver 2 malfunction gas
In a CC, that for sure creates an issue, but in OC it is more likely to happen. A complete breakdown of a CCR where you cannot stay on the loop and at least run it semi open is hard to come by. In OC, all you need is a freezing first stage and you are both fried (Yes I i exaggerate for effect :) )
In OC, you are both breathing from same first stage if normal rec setup, while a more DIR-setup with twin cylinders you are breathing from separate first stages. This will still cause an issue if one of the stages fails since you have to breath by valve, or share same second stage.
In any of the above cases, a CCR is safer since you can use it manually with semi closed at least.
Do you think re breathers would work if you where to go up Everest haha
Yes but heavy
As someone that doesn’t know anything about a rebreather was hard to follow without a practical unit on show and fancy jargon.
I’m just curious
Would b nice if theres a video inserted, nevertherless its a good explaination
OC 4 LIFE
The Kalashnikov had the least moving parts
Oh wonderful. I'll only be set back a few dollars.
I would like a Non-Magnetic Rebreather : )
i still prefer open circuit, haha
I wasn't sure, so I hit like three times.
Why can’t the prices come down on rebreathers ??? Theirs enough manufacturer competition.
The U.S. military will lend you one and even train you on it. All you have to do is tell a recruiter you want to be in special operations.
joshua smith ... 😂😂😂
@@joshuasmith7369 Hell, they'll even pay you!
In saudi arabia CCR is illegal for some reason
So is women who show their ankles.
Move
I like CCR (Creedence Clearwater Revival)!
Too expensive way too expensive and the maintenance is crazy.
Just join the special forces and get a scuba diver patch and voila free rebreather
Dude looks like Nick Frost
You can't use a rebreather during your padi open water training its a special course you take separate
what about if you get narced and dissorientated? atleast open circuit bubbles show which way is up
No sensible reason to go that deep, (at least not for recreational divers). If a recreational diver goes that deep then good luck to them.
I really don't see a point when diving withing recreational limits. For technical divers that may require like €200,- on helium for a single dive on open circuit it makes a lot of sense.
www.apdiving.com/en/rebreathers/new-to-ccr/
At air-range depths these benefits are huge. Want to take your time on a reef? 3 hours at 20m with no deco is a realistic dive with the Inspiration xpd or evp (or about 2.5 hours with the Inspiration evo - due to the smaller scrubber unit) compared to just 36 minutes on open circuit.
Maybe if he would show us it ide believe it more
If the military uses them I trust it
Never going to be at the point of diving where I’d need a ccr. Plus, there are too many ways for those things to kill u.
Let help you out...just bc you can afford it rarely translates to you should! If youre not a navy seal dont be extra!
I have 19
Cant control buoancy with breath, cant move into wonky positions.
These 2 things is basicly why i dive lol. No need for a rebreather at all.
Personally, I think rebreathers are the future however.....
Currently 10% of all rebreathers kill their owners!!! Good luck...
They are better in so many ways but at this moment hold much too higher risks for regular diving. l think it will be a few years before you see a PADI open water rebreather course.
They're still not open to the idea of the long hose configuration on a single tank
Perhaps if you buy a decent machine that isn't made of PVC plastic from China with electrical components made by someone sitting their dorm room trying to save a few bucks, the CCR is way safer than a OC at any given time.
@ so that's why the experts who uses rebreathers carry an OC system too for bale out in case it all hits the fan. They are very complicated and there's just too many things that can fail. They rely on their sensors and computers to warn them of issues before they might pass out and die.. lts like parachute jumping without a reserve. It's not the quality of the equipment it's the wear, assembly and service of the rebreathers. Nobody almost dies using one.
Small bubbles leaking from your reg, no worries. A few drops of water in the filter and your breathing acidic air just from worn o-ring. Too much oxygen at 10m or not enough, either way your dead.
No matter how much l want too, at this moment in time I would rather free dive in caves than use a reberather.
@@stephens2r338 PADI do a rebreather course:
www.padi.com/courses/rebreather-diver
> A few drops of water in the filter and your breathing acidic air just >from worn o-ring
This is very unlikely to happen, modern CCRs have water traps and so are more tolerant to moisture preventing "caustic cocktail"
Rebreather? I just always called it the "dutch oven".
Imagine using an ots spectrum with an rebreather.... no coldness ehatsoever
Rather than pay for rebreather, just craft one with titanium that you find from scrap around the Aurora.
Con... Really good divers rarely get into trouble using OC even on super deep super long dives ..On the other hand i know/knew a few really good ( really really good) divers who are no longer with us due to rebreather incidents..When things go wrong with breathers they even kill very competent,very experienced divers.. Something to think about and something that stopped me getting one.
CON: If your buddy doesn't have one a CCR is pointless because youre going up when they are.
Damn is it just me or does it look like his neck and up is edited to appear on someone else's body? You can see the sudden color change wtf lol
Big con of a rebreather: you're trusting a machine to tell you what you're breathing. A fellow diver of mine had a few incidents with his rebreather, one of them being a "surprise" low ppO2 very close to the blackout point.
EddieGuy VH where was his warnings and they should be monitoring it often anyway so that shouldn’t happen
EddieGuy VH Your friend got complacent. He’s an idiot and should stick to OC. But then again he will probably run out of air someday
Pretty tough to have a low ppo2 sneak up on you, most modern rebreathers have atleast 3 o2 sensors. Millivolts need to be checked prior to diving
Don't become complacent and the computer will only tell you the mix** it's up to the diver to decide what to do about it.
** if unit is maintained and cells are tested properly
The last argument negates all the disadvantages.
If you can't fin down to look upside down into a cleft..where's the fun? We're divers (DIVE?) not surveyor s
oink oink
So, don't waste your time with a re breather. Got!!!
just wonder why so many people die using rebreather ...
I hate the look when you are on the loop.