Why You Should Dive on a Twinset
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- čas přidán 23. 05. 2019
- Why You Should Dive on a Twinset
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The first thing most divers think is wow they must be heavy and yes they are heavy but not in the water. I still need lead weights to get down with my twin steel 12s but nowhere near as much as on a single 12 and as my wise friend, Dangerous Dave says: “I’d rather take extra gas with me then lead…” you can breathe extra gas but that lead will only make you sink.
So let's look at Why You Should Dive on a Twinset
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Sources
Nick Doidge
nickdoidge.co.uk/
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Team
Presenter(s): Mark Newman
Writer(s): Mark Newman
Editor(s): Shaun Johnson
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I have a particular problem with a twinset...something to do with the shortage of money.
Reading the comments reminds me of how new I am to all this lingo and info😂
Love to hear about rebreathers
I'm a newly open water cert diver but the idea of a 19cu pony sure is appealing.HP hoses can burst, catastrophic failure situations.Its like a reserve parachute in a way in my mind.
❤️ my twinset. Utilizing a twinset of MP72’s equal the same weight of a single HP117 with 22lbs of lead, which is what weight I use. Redundancy is key dive solo, my twinsets do that for me. 💯
I dive a single steel 100, and I never have to end my dive due to air, it's always due to time.
Most of our senior divers dive twin set with 2 first stages. Heard it is super relaxed on your back with a wing.
Man nothing beats a good old Kirby Morgan SL 27 with constant air from surface . Stay down forever
Sidemount is the way to go for OC weather recreational open water or more technical, single or double tanks, aluminum or steel, warm water, or cold. Easy access to valves for shut down, and easy gas sharing if needed. Donning, and doffingthe tanks in the water is great.
I mostly go sidemount nowadays.
Easy access, everything redundant and in a failsafe configuration. No bridge to close on the back in case of failure.
Would love to see you do a video on the benefits of side mount! 😊
Love the video. When I first started thinking about learning to dive, I wanted 2 tanks for redundancy. (I am a firm believer in backups to my backups on pretty much everything in life) Never knew twins were already a thing. I would love to hear about CCRs. Keep up the amazing work Mark and Sean. Also, please do videos with GTS. Those ladies are fabulous to learn from. (No insults intended to Mark)
True depending on the type of dive. I do deep ocean with twin 100s st with wings and a pony. Three tanks and two reg sets. No fuss. True heavy, but put them on and fall in. Take them off at the ladder. EDIT, going to rebreather school in the Spring.
Nice set ups. I just use a single with a Pony. Reduced weight and offers similar safety.
A true twin is better ballanced and both regs can acces all gas.
I've decided to try Sidemount. Carrying twins just looks miserable in the Texas heat, I like the additional redundancy given by Sidemount. The ability to better solve underwater problems, since I can easily see everything, is also attractive. I'm working towards taking the training now.
I've dived with twin 50 cf tanks before and when Mark tells you about the role on a twin it's a lot more than you may think. I can compare it to when you go upside down in a drysuit, except your upside down and probably sinking.
Generally I normally dive twins and a stage. But the odd short shallow dive I will use a single. Or working under boats I leave the bottle on the boat and a 20m hose to the second stage.
Woooo finally! Thanks Simply Scuba!
You're welcome 😁😁😁
I dive sidemount because of my own physical limitations. My twinset buddies and I take turns being jealous of each other for different reasons. To your point about the flexibility of a backplate, my first season of sidemount diving was done in BP&W with a sidemount adapter to keep the wing from tacoing. It worked really well. I'm diving an x-deep stealth tec rb this season. Trim is a bit easier with it.
I just got my TDI intro to tech thanks for bringing this out it was a challenge but worth the effort
Yes Please! Always wanna know more about CCR rebreather all the type T or R, ECCR and etc.... And how does CCR apply to rec diving? I mean there is lots of prep before CCR diving and lots of different. How is that going to effect diving with OC. Is CCR really a worthy option for rec day to day diving? Of course what brand? What training agency got the best CCR courses? lots of question. Please do a video!! Thank you!!
@Bogy 1 Kinoby Thanks Bogy, I am a trimix and Cave diver think might wanna step into CCR. I am with TDI. Just love the show.
There is no such thing as a recreational CCR dive.
CCR is not worth it for a recreational profile as sorb cost and maintenance will outweigh doing the same dive on OC.
If your dive doesn't call for a CCR, don't dive a CCR....
Recreational profile dives can be conducted on a CCR, yes, but using a CCR in itself is "technical". Nothing recreational about it.
@Bogy 1 Kinoby
Tec dives are beyond recreational limits with the right equipment and training. Going beyond recreational limits without the proper equipment and training is a suicide dive. Staying within recreational limits with tec equipment and training is also not (technically anyway) a tec dive, but if anything else it's probably safer unless you've really violated the KISS principle and task overloaded yourself.
I def want to try twins someday.
Would also like a video about rebreathers. 👌
doubles are very nice, but adjusting trim at first could be annoying
I have just started driving on twins. I have a halcyon system with the cinch. I love it except when your harness is not evenly tightened, then it rolls around on your back a bit. I love taking the extra gas though
Yes, please do a video on rebreathers. something I've been interested in but don't know if it's for me since I don't have all the facts.
noted!
I wish I had the funds ;)
Dude thanks I needed this and will now dive twins thanks.
I’ll be going to twins this year. Can’t wait. Thx Mark
Gave up those heavy, cumbersome twinsets about 5 years ago and only dive/teach sm, including sm rebreathers. O/C sm is by far the simplest and safest way to dive with total redundancy. Off a boat, I simply clip my tanks to a gear line, then clip them onto my bc when I’m in the water. I never feel the weight of the tanks on my back out of the water, I can always see and work my valves, have much better buoyancy and trim, can hand off either of my tanks at will, and am not tied to any configuration of tank sizes, etc. It takes time to master the configuration, but we’ll worth it IMHO.
What about diving single, with a pony bottle (not a stage, just extra air, just in case). It would be interesting to see a video covering something like that.
Great video idea. After realizing 2 weeks ago that I have a giant lung capacity that eats up air I have been looking into twins!
Are you really relaxed in the water? Do you have perfect trim? I know that these are stupid questions. But I know why I am asking. I was solving this problem with really big guys. Sucessfully.
When you completely stop moving. Not a single move of yur fins or hands say for one minute. Can you stay +- 20 cm (breathing) in exacly same depth? If no, adjust your bouyancy using a BCD and repeat the process. Once you are not falling anywhere or ascending unintetionaly, you can try to swim again. Since this moment you are using your thrust only for moving forward. People usualy tend to be a bit negative. So they fall when stop moving. They are compensating it with constant kicking. Which consumes air a lot. And then. The hardest thing ever. Relax! Enjoy. Leave your stress on the surface. Don't think of breathing. Let your body to do the job for you. You will be surprised how long your single tank would last.
Yes CCR is a really good video idea!
i used to dive on a twinset but didnt like the extra weight on the surface and struggled with shutdown drills because i couldnt reach the valves everytime
I started diving twin LP 95's, which I bought from my fellow dive mate/shipmate, and was subsequently "fired" as a customer from my local dive service technician. He wouldn't admit it, but I knew he hated hauling those things around, made up some bs excuses why he wouldn't service my gear anymore. Oh well, he isn't the only game in town. I love diving twins, never looked back
What regular divers think: man twin sets are heavy
What I think:decompression sickness is at my door step
I agree
I use s D20 DIR setup myself
My go-to setup is an Al100 or Al80 and a Spare Air for when stuff hits the fan. Yeah yeah, it's not a proper pony, whatever, cram it. I've been diving 30 years and still have never actually needed backup air, to heck with all the extra weight.
As to endurance underwater, my RMV is low enough that I'm almost always against my NDL rather than my air supply. Either my buddy runs low on air or we run out of bottom time...I think I've been the low on air guy maybe 5 times.
Having said that, I would definitely consider twins if I were in an overhead environment or a REALLY long shallow dive where I were only constrained by how much air I brought with me. Then again, all those also sound like a good fit for sidemount...
I looked into twins a few years ago and decided to go sidemount instead. Easier to handle and in a failsafe configuration.
D7 300Bar gives me enough air for two hours of no deco diving.
In the navy we used twin sets but we're alloy or phossferos bronze. Very light.
These days I use a 15 litre single and 12 litre single perhaps also with pony bottles. These are steel cylinders.
Thx, much to consider. I’m getting a twin setup very soon. I believe I’ll get neutrally buoyant aluminum 80’s.
Waiting for my first Backplate and wing to come in.
Tried on a friend's doubles out of the water over the weekend. They were shocked when I did a leg squat with them on.
All depends on my dive goals. I will do side mount 100s or back 120 single. I like side mount best for buoyancy.
I love my twin set , I dive a pair of aluminum 80s on an OMS back plate and wing
Might be a stupid question but I'm new to scuba diving. Do twin tanks increase downtime?
hi
i love your vids sooo much...
so i wanna ask about your camera
what kind of camera do you use underwater?
Yes please I'd love to see a good video on rebreathers
How about a twin tank setup video that includes reaching the valves while wearing bulky drysuits. Most divers I know are unable to reach the valves Thanks. Keep the good info coming 👍
Evil DroneZ
That would be really helpful!
*Evil DroneZ* "Most divers I know are unable to reach the valves"
Remember your first certification class, when you had to remove and replace your scuba system underwater?
That is why you had to learn to do that.
Twinset does not provide redundancy. On a cathastrophic valve failure I have seen a gas loss from 150 bar to 20 bar in a few seconds even before you can even do a valve shut down. Twinset doesn’t give redundancy, only extra gas.
Rebreather video please! OWSI, live on the GBR so tropical diving w singles. Have a bunch of steelies that don’t get used much - day boats w tourists don’t like you disappearing on long dives when they’re ready to count pax and head home on schedule!
Wild 4 years ago I was a freshly minted open water diver watching this thinking dang it would be cool to have a set of doubles…now here I am to say screw diving doubles just buy a breather if you gonna strap over 100lbs on your back it better be able to give you multiple hours of diving otherwise not worth the faf and hassle
Great video. What wing do You dive with?
I bought recently a used twin 12L cylinders, only to get more safety on dives with friends in the winter. Same bottom time at 40 meters, but twice the air!
what mix?
@@bryanlee1887 Air. Might use them for trimix later, but right now I'm not qualified.
EddieGuy VH Damn, okay 40 meters doe with air, do you do deco?
On air. I limit myself to 20 minutes of deco max, that gives me around 25-30 minutes of bottom time on a 35-40m dive. I'll do it on O2 when I get the gear :)
I dive with twin 70’s with a J-valve, a weight belt and a horse collar. They are all pre ‘75. I’m still looking for a twin hose regulator and vintage style mask and flippers. I know they are fins, but in the time period I’m interested in, they were flippers.
Tom if you are looking for a double hose with a modern flair look at Vintage Double Hose...I believe they offer some vintage double hose regs, but he builds a modern double hose version...called the Kraken Argonaut...I was tired of seeing the and hearing the bubbles go buy my eyes and ears so I bought the Kraken, it has high and low pressure ports so you can configure it the way you want...I love it...and the sound of silence is wonderful!
That’s my dive set up too, twin 72s with a double hose regulator, weight belt and military BC. Vintage diving is awesome
I'd like to learn about re-breathers please.
is it complicated to switch the air supply from the bottles? i imagine it to work like you close one valve and open the other under water?
Oh man twins every time, you should always have enough gas to get you out of trouble, or to get your dive buddy out of trouble especially on decompression dives not only do you have to run your stops but you may have to decompress your dive buddy. Oh and carry atleast one (1) sling tank, remember Murphy's law
How about a stage tank? Can it be a good alternative to a twinset?
Yes, rebreather video like this please!
Diving on twin rebreather..
Breather, Meg 15, so hard to go back to oc...
Lighter then my twin set too.
Twin 12 sidemount 😎
Still haven't dived a proper twinset, only rebreathers, or singles and stages.
All my instructors told me to stay the fk away from twins but not my air consumption 🙄 so as for wing backplate. Now only need a pair of twins😂 and a drysuit.
Twin hp80,hp100, and lp95s. I like the 80s best.
Better to have more gas , less lead. Great!😁
Xdeeb zeos 38 comfort vs Finn fly 17D comfort
Thanks
Just passed intro to tech bought my tanks still got to get manifold, backplate, wing. Twinsets are not so bad for the gas hogs like me that cant sip air like the rest of the scuba community just keep practicing my valve drills.
Atm semi wing single tank.
But looking at the techline peanut 21, with a double 8,5L. setup.
Ps. if you're interested in diving videos from the Netherlands take a peek at my (amature)channel.
Hey, the peanut is more geared towards single tank diving.
From personal experience I can tell you the donut 17 special edition works like a charm for double 8.5's. That's how I got into twins. It even works with double 12's but keep in mind you'll then be pretty low in the water on the surface; which is cool in lakes or Oosterschelde but a bit rough on the North Sea when there is alot of wind.
@@fredericv974 Tnx for the info. I was told the peanut works great with double 8,5. I dont really want to go double 12, and would like to use the same vest for travel. So a single tank option is nice to.
I wanted to use steel tanks for doubles with bp & w. My local dive shop didn't recommend it in case the wing fails. He says I could not swim to the surface due to the weight of the tanks. What are your thoughts?
go for dry suit for buoyancy redundancy
What training would you suggest for twins I want to learn more!!!!
Weights and lots of protein😉
Just wonder if twin setup be better for my wife. She is tiny 4’10 and 98 lbs and single tank is huge on her. Thinking twin 40s would maybe fit her better and fix her trim issues. Anyone have this issue
Twins yeah...nah. Especially 12ltr steels trying to climb the ladder back into the boat or even worse, up a jetty. An alloy pony back up and a second or third singles to swap in the boat wins for me.
American here, what size is a “single 12”? I refer to all my tanks in cuft
12 Liter Air Tank. 0.424 FT^3
@@whoyoulookingatabs1028 It doesn't wok like that unfortunately.
In Europe scuba cylinders are referred by their water volume, while in US, the scuba tanks are rated by the amount of compressed air they contain at their working pressure.
So the 12L steel tank would be either LP80 (low pressure, 80 cu ft) when rated for 2400-2600psi (~180 bar) or HP100 (high pressure 100 cu ft) when rated for 3442 psi (~236 bar).
Typically, when they refer to 12L tank in metric countries, they really mean HP100 AFAIK.
Confusingly, sometimes I've heard people calling AL80 tanks the "12 Liter tank" as well...
I free dive... what the heck am i even doing on this video? 😂
Mark, I wanna have your babies!
Or at least we could get our twin 12's together and make a twin 7.
Can you show how to mount a twinset on a standard BCD jacket ?
build your own adapter or get ap twinset blocks and bands
if you are doing photography, would it be best to stay with single tank? I am quite happy with using single, and thoughts did came about on tech, but after i am into photography, i drop the idea of doubles and most of the diving centre do not support doubles. the easiest option would be side mount but there is too much things to do if i go on side mount. would prefer to just concentrate on my subject instead of keep changing my gas tank for side mount, lol
Thats my thoughts on tech, hence i didnt went towards tank.
for deco dives, single tank is also possible, but not really advisable for newbies, i did quite a number of deco dives. just that would need to really calculate the air that is requested for the deco stop.
You can’t tell me you enjoy having 30+kg of cylinder slung on your back, plus your lead.
*Tempted on Twins*
czcams.com/video/lCscYsICvoA/video.html
@@simplyscuba Best response ever.
I think you're looking for rem and ram...
SMS75 can backmount and sidemount
Sure why not ? Rebreather, rebreather, rebreather!
And if you do, please inform us about traveling with rebreather. Many of us are “down south” divers; and are taking planes! Is it difficult to travel with your expensive “trash can” and small cylinders?
I use a twin myself with a Octapuss rig
I think, if you are an experienced diver you will reach the conclusion that you use Doubles for deep technical diving, & sidemount for everything else as carrying more than 4tanks in side mount sucks
Single and a smaller pony. No buddy no problem.
The problem is your buddy most likely wont have a twin which limits your dive. I prefer to get a larger size tank
I'm baffled that anyone would need to use twin tanks. Twice the weight twice the price.. NDL. well you don't get much NDL at any depth and if you are on a liveaboard doing up to 5 dives a day it becomes less.
So to need twin tanks you must be a real air guzzler.
Simple solution.
Take a pony.
As for sidemount why would anyone be bothered with that.
Only any use when cave diving.
12 litre singles rule.
Double cam band on your BCD and it never comes loose.
Most women use like 3x less air. Must be nice. See this all the time
Meh...it's just too much of a nuisance for me (diving thousand islands/great lakes). Single steel 133 hp + 19 cf pony suits me just fine. Tons of gas; dont mind the changeover on the boat.
This is the guy who didn't understand what a J valve was and posted his ignornace publicly of his channel. Dont take advice from someone trying to sell you more.
BEcause you have twins?
Don't expect to see any actual diving in these, just a guy with a beard talking about it.🙄
Twinset? You mean Doubles....FAIL. Don't Lie, you don't dive and never have. It's been doubles since the beginning of time. Your using the wrong terminology sucks
Shhhh...secret. Faber Steel LP 95's, 95 cf at approx. 2400 psi. in US. In Europe, that same tank is rated 300 Bar (approx 4300 psi.) Find you a good tech dive shop (cave, deep wreck) pump those 95's to 3600-3800 psi (well in safe zone) and presto, you are wearing about 240 cf+ on a pair of doubles!
Sidemount is life! I only need to carry one tank at a time to the water, which is nice if I ever decide to dive my LP108s, those weigh over 50lbs each when cave filled.
Sidemount FTW
@Bogy 1 Kinoby Your argument makes no sense... Instead of listing a single reason why BM could be superior to SM, you list reasons why SM is better while simultaneously arguing it's silly to do. At least you got one thing right- SM has many advantages ;)