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VDH wing and bladder

Discussion in 'Buoyancy Compensators (BC's) and Weight Systems' started by couv, May 10, 2019.

  1. couv

    couv Instructor, Scuba

    # of Dives: 1,000 - 2,499
    Location: 13th floor of the Ivory Tower
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    Someone requested a picture of my 18 LB VDH wing and bladder. Below are pictures of them next to each other first not inflated and then inflated. Not inflated the bladder looks much too large for the wing, but after inflating both one can see this is not the case.
    VDH 18lb wing and bladder not inflated.jpg

    VDH 18lb wing and bladder inflated.jpg
     
  2. runsongas

    runsongas Loggerhead Turtle

    # of Dives: 200 - 499
    Location: California - Bay Area
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    i think it may be the same size as the vdh 23 though. maybe bryan can chime in.
     
  3. couv

    couv Instructor, Scuba

    # of Dives: 1,000 - 2,499
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    Yes, I can see that as a possibility. What say ye @Bryan@Vintage Double Hose ?
     
  4. tbone1004

    tbone1004 ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: I'm a Fish!
    Location: Greenville, South Carolina, United States
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    common practice for one size bladder to be in multiple size covers. The RF welding molds for the bladders are $$$$$$$, cutting and sewing patterns for the covers is negligible to cost. Same cost to make the bladder covers regardless of the size *maybe a couple dollars in extra material total, but same labor*.
    One of the advantages of the oversized bladders is that their seams are not going to be under significant pressure when inflated, so the pressure will be taken up by the cover which is a much stronger material.

    It is highly likely that the inner bladders are identical for the 18/23/35.
     
    Kensei and couv like this.
  5. happy-diver

    happy-diver Skindiver ScubaBoard Sponsor

    # of Dives: 2,500 - 4,999
    Location: queensland Melbourne diver
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    Wow! You inflated your wing with the bladder next to it??????
    Is that through osmosis or one of the new magical powers that I see in movies these days

    I think the difference in non and inflated bladders may go some way in showing how when
    you take a hole and fold it in half, the hole enlarges to get the inner inflator and dump nuts out
    or in
    or does it just change sHaPe
     
    couv likes this.
  6. tbone1004

    tbone1004 ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: I'm a Fish!
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    @happy-diver different phenomenon, the bladders are physically much larger volume wise than the volume of the bladder cover.
    The fold in half circle trick involves the actual diameter changing as the arc of the circle flattens out
     
  7. Diver below 83

    Diver below 83 Barracuda

    # of Dives: 0 - 24
    Location: SoFlo
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    Anyone have a picture of an 18 with a 23?
     
  8. couv

    couv Instructor, Scuba

    # of Dives: 1,000 - 2,499
    Location: 13th floor of the Ivory Tower
    4,431
    1,647
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    From the VDH web store:

    827189195.jpg
     
  9. Diver below 83

    Diver below 83 Barracuda

    # of Dives: 0 - 24
    Location: SoFlo
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    Appreciate that but if you look at the description it states that’s an 18 next to a 35. Not 23. That’s why I’ve been asking for a pic of a 23 next to either and 18 or 35.
     
    couv likes this.
  10. CDMac

    CDMac Nassau Grouper

    # of Dives: 0 - 24
    Location: Fort Lauderdale, FL
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    I may buy one (a 23) just to get that picture for you :poke:
     
    couv likes this.

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