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Author Topic: Integrated Alternate Air or Octopus  (Read 5484 times)

Wombat

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Integrated Alternate Air or Octopus
« on: 27 Sep 10, 12:46 »
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  • Have been diving for a almost a year and looking to buy a regulator. This is my first. I like the Atomic T1 that come with the intergrated air source. I like the fact that I have one less hose but Im also concern with out-of-air situation. Anyone ever encountered out of air emergency with an integrated air source and is it difficult to share air from the integrate air source?  I also like to hear opinions from other divers to what is a their prefered regulator setup.

    Alvin Ho

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    Re: Integrated Alternate Air or Octopus
    « Reply #1 on: 27 Sep 10, 18:32 »
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  • I used to have the Scubapro Air II together with my MK25/S600. It was one less hose to worry about with the integration but there were a couple of drawbacks in my opinion.

    1) the Air II is more expensive to service compared to normal octopus/2nd stages
    2) not very comfortable to breathe from due to the inflator hose being shorter and less flexible.
    3) when you're breathing from the unit, it's a bit more tricky to inflate/deflate your bc through the power inflator/dump valve
    4) a bit more tricky to inflate a SMB as you would use a normal octopus for the job, now you have to either breathe from the Air II (or similar model) and use your promary 2nd stage to inflate the SMB or use the Air II to inflate the SMB.
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    Kiat

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    Re: Integrated Alternate Air or Octopus
    « Reply #2 on: 28 Sep 10, 20:34 »
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  • I personally prefer the Octopus. The hose on the first stage are simply too short for buddy breathe. Its not impossible but you need practice. Like Alvin mentioned, its tricky to inflate your SMB with the Air2 and its not comfortable breathing from it.

    antacid

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    Re: Integrated Alternate Air or Octopus
    « Reply #3 on: 01 Oct 10, 15:06 »
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  • uh i think with the Air2, you're supposed to breathe from it and donate your 2nd stage instead...

    unless it's a really hot girl with big boobs with an Air2, then I'll want to use her Air2 in that weird position.

    personally i'd prefer to stick with a regular 2nd stage as an alternate air source. so at least if something's wrong with it i can open it up and try fixing it on the spot. with the Air2, you need special tools and it's a #$@!@~!$#^ pain in the butt to even just open it up.

    haagendazs

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    Re: Integrated Alternate Air or Octopus
    « Reply #4 on: 08 Oct 10, 16:06 »
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  • Agree with Alvin, using octopus really save you a big bucks from regulator service/inspection compare with Air2.
    I also met a guy who's only dive with 1st-stage & a 2nd-stage (no octopus, no inflator hose, no spg)!!  ;D
    one hose or two hose is really doesn't bother IF you're really keep the buddy system. :)
    Dive Safe!!!
     

    limk

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    Re: Integrated Alternate Air or Octopus
    « Reply #5 on: 11 Oct 10, 10:35 »
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  • i've tried an Air2 on halcyon before and have got the following issues:

    i. in an emergency air-sharing incident it will be hard to maintain good trim whilst ascending/swimming with a panicked buddy. it's likely to be in a vertical upright position - problem for swift currents for e.g.
    air dumping when air in bcd is expanding is also a problem as u are already using the Air2.
    ii. donating primary reg which is not that long makes the buddy swim close to u. entanglement of gear or just a panicked arm knocking off your mask will escalate the issue to even more panic.
    iii. washing bcd with air2 by resort people who submerge the entire gear set might send water into the Air2 causing corrosion and ultimately lower the performance of an equipment u will rely on in an emergency.
    iv. performance at depth (40m or more) is doubtful. additional expense when one's diving progresses into nitrox, trimix, cave, wreck etc.
    v. still better to use long hose, backplate config. that is equally good for simple recreational diving and more advanced diving. one set fits all, no need to think which gear to pack or which hose to donate - all the same system and develops excellent muscle memory especially in critical situations instinctive actions might save you or buddy's life.

    siaokao

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    Re: Integrated Alternate Air or Octopus
    « Reply #6 on: 12 Oct 10, 14:53 »
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  • Limk and the rest have given some really excellent reasons why Air2 should not be used.  As much as Air2 kinda products are innovative in many ways, its not something I will use.  ;)
    So they call it a 'FACT' coz someone made some statements on a 'FACT SHEET'? hummm...

    thomssi

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    Re: Integrated Alternate Air or Octopus
    « Reply #7 on: 12 Oct 10, 15:48 »
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  • From my point of view the Air2 (like other "innovations" such as the HUB system) is a solution to a problem that never existed and is probably more dangerous than what you started with.

    siaokao

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    Re: Integrated Alternate Air or Octopus
    « Reply #8 on: 13 Oct 10, 15:34 »
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  • From my point of view the Air2 (like other "innovations" such as the HUB system) is a solution to a problem that never existed and is probably more dangerous than what you started with.

    Well, I agree with the dangerous part, but I do believe there is a market that find idea of Air2 "innovative" (ppl do buy and I've seen dive instructors having them!!), and looking at the many 'silly' things ppl bring underwater (mask cam for example), 'innovation' is in the eye of the beholder!  ;D

    But everyone do have different opinion.. As much as many will argue DIR is the safest way to dive.. we cannot insist everyone do that.  ;)
    So they call it a 'FACT' coz someone made some statements on a 'FACT SHEET'? hummm...

    thomssi

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    Re: Integrated Alternate Air or Octopus
    « Reply #9 on: 13 Oct 10, 21:38 »
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  • Innovation is good when it brings benefits.  Most experimentation (or innovation) fails but the proportion that gets through drives progress and that is a good thing.

    Air2 however is silly.  I don't really care if your average diver uses one (as long as they aren't my buddy) but instructors doing so is stupid, how do they teach certain bit of the syllabus (ok apparently buddy breathing is now out but hey...) let alone rescue anyone should the need be.