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Can I use a single wing for doubles?

Discussion in 'Buoyancy Compensators (BC's) and Weight Systems' started by bigred177, Sep 22, 2008.

  1. *Floater*

    *Floater* Solo Diver

    # of Dives: 100 - 199
    Location: Here, there and everywhere
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    Yes, but you won't get 36# of lift from it because part of the wing that would inflate with only a single tank on top will be trapped under the doubles. That said, I saw some cave divers use that wing in Mexico with AL80 doubles and 7mm wetsuit (but in shallow depths and with no stage or deco bottles, so lift requirements were minimal). I also saw some people dive AL40 doubles with H Eclipse 40 at Dutch Springs last weekend. The lady using it was wearing a (thick) wetsuit, so no 'cheating' in terms of using drysuit for buoyancy.

    Bottom line: It works if you only need very little lift.

    Tip: Put the tanks as close together as possible if you have a choice. For example, if you rig independent doubles with a reversed STA, the tanks will be touching.
     
  2. Gombessa

    Gombessa DIR Practitioner

    # of Dives: 200 - 499
    Location: NorCal
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    We dive LP80s from various manufacturers (some with scooters) with wings varying in size from 38# to 45#. The 38# has more than sufficient lift.
     
  3. RAWalker

    RAWalker Divemaster

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    I dive the 45# OMS Bungied wing in a single tank configuration so I'm speaking from experience.
    The Bungies when set up properly do not completely compress the bladder at a certain point the bungies are completely relaxed and water pressure exerts the the force to deflate the bladder the rest of the way. What the bungies do is once there is enough air in the bladder it exerts its force to equalize the pressure throughout the wing and control the movement of the air by restricting the bladder's size and shape. This restriction of size and shape also controls the taco effect unlike a non bungied wing. This wing although suboptimal is far superior for singles diving that the same wing without the bungies and is actually quite a well behaved and safe BCD for singles use. So to answer the question that was asked you can have 1 wing for both doubles and singles diving. Although not optimal many divers are looking to minimize their investment in their gear while maximizing it's versatility and usefulness. This wing design safely allows them to own 1 less wing. This wing is optimal for divers with budget considerations that want to meet the above mention goal of maximum versatility. Like any other piece of gear the user must know the devices design constraints and limitations.

     
    Last edited: Sep 23, 2008
  4. Colliam7

    Colliam7 Tech Instructor Staff Member

    # of Dives: 1,000 - 2,499
    Location: Kents Store, VA
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    And, I think you are getting a level of consistency in the responses. Are most singles wings wide/big enough? Not really, at least not without sacrificing some level of wing performance. Can you do it? Yes. You can get enough lift out of many singles wings to adequately support a double 80 rig, particularly in salt water, with 7mm neoprene or a drysuit, etc. Nothing wrong with trying it to see for yourself how a single tank wing performs with doubles. (That's what pools and quarries and lakes are for.) It is something like putting a doubles wing on a single tank, to see what kind of tacoing you get, with and without gussets / bungees. I wouldn't jump off a boat in 6 ft seas, over a bottom at 160 ft, for the first time in a 36# wing with double HP120s. But, I would try it in shallow water for grins and giggles, so I could come back to SB and say, 'Hey, it actually works.' or 'Man, was that a dumb idea, or what?"
     
  5. cool_hardware52

    cool_hardware52 Dive Equipment Manufacturer

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    It is irresponsible to promote this inadequate configuration.

    People do all sorts of things that I would not do or recommend.

    Double 120's + 2 x steel 72 deco bottles with a singles wing. Where to start?

    I unfortunately see not infrequent reports of divers in doubles using too small a wing.

    They have enough wing to compensate for the weight of their gas, but no where near enough reserve to deal with a drysuit failure.

    As long as they have no problems with their suit they survive. Ignorance I guess is bliss.

    Tobin
     
  6. foles1972

    foles1972 Divemaster Candidate

    # of Dives: 200 - 499
    Location: Cape Cod, MA
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    Yes, that will work fine. I use an OMS wing with 95lbs of lift, with the bungees and it works great. I have three friends who use the same wing with doubles, and two other friends who use the same with single steel 120s. It's completely versatile.
     
  7. Scuba Ken

    Scuba Ken Divemaster Candidate

    # of Dives: 50 - 99
    Location: Astoria, New York, USA
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    I Dive a rec wing with a single steel 119. It works ok but I have some trim issues that I think a doughnut shaped dedicated single would alleviate. I see people dive the rec wing all the time with doubles and they seem to be happy with it. It also has a restricter band to help deal with tacoing. At least that wing you can use for both safely since it was designed to do it. It is a horseshoe style though.
     
  8. PerroneFord

    PerroneFord DIR Practitioner

    # of Dives:
    Location: The Borg Cube
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    No it's not. It's designed to sell to people too cheap to buy the right tool for the job. So yes it works.

    You can drive screws with a hammer, but you'll never convince anyone with half a brain that it's the right tool for the job.
     
  9. JeffG

    JeffG Solo Diver

    # of Dives: 500 - 999
    Location: Edmonton, Alberta
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    I spent around $20,000 on my tech gear. Wow...I could of saved $300 so that I could dive an unoptimal piece of gear.

    Why didn't I think of that?


    BTW..Its called the nickel rocket approach. If you do it for wings...it is probably affecting other areas as well.
     
  10. PerroneFord

    PerroneFord DIR Practitioner

    # of Dives:
    Location: The Borg Cube
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    Ok, speaking from experience...

    How many wings do you own and/or dive regularly? I am interested in your comparison sample size. My *personal* experience comes from owning 5 wings and having put about a dozen in the water for dives including that bungied 95# OMS wing.

     

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