Why Twinset Diving Is AWESOME | Surface Interval

Why Twinset Diving Is AWESOME | Surface Interval
Twinset diving, diving doubles, or just diving with two cylinders on your back has its origins back in the beginnings of scuba diving. Back in the day, cylinders were smaller and couldn’t go to as higher pressures, so, to be able to stay underwater for longer, divers would often link two or more tanks together.
Now tanks are a range of sizes and working pressures, but we still dive with multiple cylinders. But why not just dive a single huge 24L tank instead of twin 12s? Or sidemount them? Let’s look at why twinset diving is awesome
Chapters
00:00 - Hello
01:04 - Range
02:32 - Redundancy
03:35 - Stability
04:54 - Backplates
06:06 - Workout
06:45 - K-Bye
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[@simplyscuba]

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[@wallybrown9509]

I don’t ever want to get back to single tank ever again because 1. I love he extra gas. 2. I love the safety and redundancy of having two 1st and 2nd stage’s. 3. The ability to customized my kit. The only draw back is the weight of two tanks. I’ll take it.

[@TontosVotanPaSocialistas]

You like me. 🙂👍

[@wallybrown9509]

@@user-__ll__ I do both sidemount and twinsets. Love both for different reasons.

[@thetattooedpsycho]

Just bought and assembled my first set of twins. Now just waiting on my wing!!!

[@tylerbick2537]

I really like how quick and easy it is to get strapped in to the doubles (vs side mount). I also like that I’m not keeping track of switch pressures, it’s one less task loading item. Though neither of those things are deal breakers, side mount has its own nice little benefits.

[@markhowlett8070]

I dive on twin 7s 300 bar. By far the best setup for rib diving.

[@julians.2597]

I like sidemount way more, much less backstrain and easier staging

[@micheleiuliano6986]

Well another clear and interesting video! I love to watch your contents and I decided to be more active even in the comments!! 🤙🏽🤙🏽well done

[@carllafrance5510]

The thing to watch with duals your time and don't stumble into decompression

[@EmanuelePola]

Start with mono some years ago, now i use twins all the dive (not only the tech one).

[@BingSurjawan]

I rent the tanks from local dive centers since I usually travel to places. On a 3 diving days trip we can use 9 or 10 tanks each person. I'm thinking to try twins or doubles. Not sure how easy it is for dive centers to supply twins in remote areas. Probably doubles are the way?

[@timgosling6189]

Doubles and twins are the same thing, unless you mean two tanks without a manifold? With rental tanks, to avoid all the setting up with twins on backmount I'd go for sidemount. Steel 12s or aluminium 80s will both work with only minor adjustments to your personal gear so you can get your trim right straight away.

[@JM09APR]

#askmark I’m just looking in to twinset diving. In fact I’ve been given a paired set of 12L’s with manifold and twinning bands from a friend. I need to get wing, harness, backplate and 1st stage before I can use it in anger. But my question is; When you do two dives on a set of twins do you isolate them and use one tank for the first dive and the second tank for the other dive? Or just keep them both open, monitor how much air you surface with and plan your second dive profile accordingly? I got a bit thrown off by your statement of “not having to swap tanks but just turn valves between dives”. Thanks for the content as ever.

[@JessePFitzgerald]

You do the latter. I believe he was referring to turning off the tank valves during surface interval to prevent any accidental release of gas with a purge or whatever.

[@rednissan001]

What do you keep clicking the remote for?

[@carllafrance5510]

I use duals and sometimes hang a 80 breath out of the 80 use the twins for buoyancy Another time in the winter I had a regulator freeze up with the duals and lost 600 lb of air in a minute till I switched regulators and got it shut off if the tie bar wasn't shut I don't know how much air I would of lost ? They say you can breath from a free flowing regulator but not for very long When one regulator freezes up the other is not far behind

[@999racing]

Should I get sidemount or doubles? What's easier out of the water, for cleaning, filling, carrying etc? I'll dive it in a drysuit most of the time but in summer I'll go wet as well. I have a Xdeep Zen that I could put the twins onto with another bladder, but the xdeep sidemount rig isn't much more expensive than the project wing... And I'd have the Zen to dive with one of the sidemount tanks at a time in a wetsuit. Can you seperate twins to dive the tanks seperately easily or is it a hustle? And does sidemount really have all the options that doubles have, considering technical diving?

[@joakimdiver1120]

I went from double 12-s steel tanks to sidemount with 2 x 80 cuf aluminium tanks last year. For me some benefits with sm are 1: easier to carry to some divespots, 2: much easier to locate problems, 3 you can donate one tank to your buddy in case of out of gas, 4: good for both wet and drysuit, 5: easier while solodiving, 6: you can change to any tank size without changing bladder. Then, I have to admit that I sometimes miss my twins in some situations. Pros and cons with sidemount vs doubles. I recomend to try both before you buy something. Good luck.

[@999racing]

@@joakimdiver1120 what are the pros of the doubles that you sometimes miss?

[@Teampegleg]

@@joakimdiver1120 "you can donate one tank to your buddy..." have you actually tried that in real life? We tried it, it is tricky as hell not worth the effort, just hand the long hose and exit.

[@joakimdiver1120]

@@Teampegleg I’ve done it but yes its tricky.

[@joakimdiver1120]

@@999racing for me, the doubles are faster to get in and out from and way more easier to combine with a stage. Still, I prefer sidemount- personal choice.

[@andrewnielsen4890]

Do twin takes have to be pared or could a 12 liter tank be bought and utilized while saving to purchase a duplicate tank in the future?

[@jr3628]

anyone know what the "butt plate" would be called and who makes one so i can clip/bungee off some stuff back behind me? still new to my backplate and would like to get some stuff off my harness.

[@mechanikos84]

Buttplate, tailplate, sidemount tailplate etc... Lots of (tec) brands carry them.

[@bloodymarvelous4790]

Or just get a butt pouch. You can clip those off of backplates as well.

[@ivoryjohnson4662]

I dive twins because I got tired of being the one low on air.

[@carllafrance5510]

Relax! Find your "ZEN" 8 seconds in 8seonds out With your new " ZEN " and twice the air watch your time you don't slip into decompression Have a great Dive !

[@bloodymarvelous4790]

Try staying shallower than the other divers. You can see the same from 17 meters that they can see from 18 meters, and your air consumption will be dramatically reduced.

[@billweithman52]

Twins just look cooler.

[@tonybarnes3858]

How common are these failures, especially "catastrophic failures", among recreational divers at shallower depths?

[@bloodymarvelous4790]

Not common. No failure is common. A catastrophic failure would be a blown hose, and if you regularly check and properly maintain your gear that shouldn't happen. Then again, a good diver is a pessimistic diver. You see possible failures everywhere and you do your best to mitigate them. If there's even the slightest possibility of a regulator failing or a hose rupturing, you're going to make sure you have a backup available. For instance when you're going into an environment with possible sharp edges, like a shipwreck. An extra cylinder with an extra 1st stage is redundancy should something go wrong.

[@Teampegleg]

This video brought to you by your local spine and knee surgery center.

[@carllafrance5510]

Good point ! Duals are heavy if age creaps in and mussel mass is lost you can do a poor man's duals wear a single on your back and some body help you hang a 80 on your front when you get on the water Or use duals get somebody help you in then float your gear on the surface and rig a crane to lift it out I asked at the dive shop how old you have to be before you give up scuba diving? They said " you can scuba dive as long as you are alive you will just find it harder and harder to get out of the water " So I developed a plan ! when I become a senior citizen I will gear up sitting on the edge of the dock fall in then crawl out on the beach ! ( I wonder if they sell splints by the duals rack at the dive shop ? ) HAVE A GREAT DAY !

[@davidscott5903]

I was confused by your comment about leaving the gas in one tank after a dive. I'm pretty sure that the same amount of gas is left in the tank when you drop the pressure down to 500psi.

[@gregd637]

No PSI is independent of capacity. Just seems the same with single tank and everyone having the same size. Basically you can have a small tank at 3000 psi that won't last very long.

[@timgosling6189]

If you dive with a single and get out with 50 Bar, well it's not wasted but it's your reserve. You aren't using it but you have to then go and get a fill. With twins on the same dive you'll get out with 130 in both cylinders. Only after the second dive do you get down to that 50 Bar minimum. And there's no cylinder swap to do.

[@elikleine8996]

If twins are awesome then what about triples?

[@timgosling6189]

Old school! Nowadays, that's what stages are for.

[@elikleine8996]

@@timgosling6189 Yeah but imagine. 3x 15liter 300 bar. That's 4500 liter per cylinder. 13500 liter total.

[@timgosling6189]

@@elikleine8996 I see where you're coming from, but on your way to the water that's 63kg, 140lb on your back in cylinders alone. If you are actually going to use that much I'd suggest either an osteopath or, better, a rebreather!

[@YouTube_user3333]

Alternatively, you can just use a small pony tank if you want redundancy without the weight.

[@marcin.j.wasiak]

LOL sounds lile you use imperial system and yoke as well

[@YouTube_user3333]

@@marcin.j.wasiak nope. Metric is way easier. And I use Din first stages. Yokes tend to have ring blow outs

[@adlapl]

I disagree, twinsets are more complex, more heavy, less practical with some stone-age metal plate ... Maintenance of tanks is doubled. Weight centre is very similar to one bottle and frankly I prefer to have a weight centre a few centimetres more away from my back as it makes easier to turn upside down - if necessary. For the same reason, instead of wing I prefer BCD as it puts some air in front of me. Again BCD+one bottle makes 3D/agile manoeuvres more easy to be executed, while compared against twinset with wing. Learn physics! Twinset plus wing makes you more stable in a water but also less agile and less able to do any 3D manoeuvres. For wreck diving, agility plus 3D is a must! I use single 15l or 18l and advanced BCD. I have two first stages on one tank and so safety is the same. Conclusion - twinset sucks!

[@markmadden2059]

Hmm, not sure the single set has the same level of resilience as twin set - what if the tank valve malfunctions?