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What's your favorite set of doubles?

Discussion in 'Tanks, Valves and Bands' started by dave22387, Nov 29, 2018.

  1. tbone1004

    tbone1004 ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: I'm a Fish!
    Location: Greenville, South Carolina, United States
    14,260
    5,760
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    post the vids, you likely saw the big O2 bottles hung off of the habitats but I have never seen or heard of a concave bottom steel tank used for scuba in this continent
     
  2. EireDiver606

    EireDiver606 DIR Practitioner

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    Interesting then. Can you explain why?
     
  3. Burner16

    Burner16 Solo Diver

    # of Dives: 200 - 499
    Location: Pompano Beach, FL
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    My favorite set would be Faber LP85s for wetsuit diving and Worthington LP85s diving Dry.

    I also have a set of Worthington HP100s that trim out fairly well and like diving them as well they're just a pain to get into on the boat because they're shorter.
     
  4. Stoo

    Stoo NAUI Instructor

    # of Dives: 5,000 - ∞
    Location: Freelton & Tobermory, Ontario, Canada
    2,634
    2,086
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    This. Most of the time I dive LP 80s. I also have LP 95s and HP 130s. I use the 130s about 4 times a year, either on something deeper, or when I want to squeeze three dives out of one jumbo fill.
     
  5. tbone1004

    tbone1004 ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: I'm a Fish!
    Location: Greenville, South Carolina, United States
    14,260
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    they were never sold in North America. As to why, I have no idea, but like I said, I've never seen or heard of one over here. The vintage guys may know of a couple from the 50's/60's so @herman , @Luis H etc. may be able to shed some light on the why, but they certainly haven't been available in the last 30+ years
     
  6. Sam Miller III

    Sam Miller III Scuba Legend Scuba Legend

    # of Dives: 5,000 - ∞
    Location: CALIFORNIA: Where recreational diving began!
    3,964
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    @tbone1004

    I am certainly not an expert but perhaps I can provide some insight as to the use of a concave bottomed HP cylinders in the world of SCUBA diving

    In the 1940s to the 1950s concave bottomed HP cylinders were very common in the US amd used a diving tanks in California - were recreational diving began- for a number of years.

    In California in the genesis of SCUBA diving. aka "Lung diving" at that time, professional scuba cylinders were considered expensive.

    An alternative was to acquire cylinders from the surplus market such as the concave bottom fire extinguisher. Remove the valve and replace with an official J, K or R or a US government surplus oxygen valve modified to fit by the late great Charlie Sturgil (google Charlie- or read "The Mask" on this board for additional historical knowledge

    Acquire an Hawaiian Hydro and presto ! a SCUBA cylinder was born ready and waiting to be dove

    The above is only my recollection perhaps @herman can verify that it really did occur

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    @EireDiver606
    I have reviewed the 200 page German catalog " Dre Tauchsportberater for 1967/1968 published by the HoZe ( Horst- Siegfried Zeller )

    Although in German it has a multitude of pictures and illustrations and includes about every equipment manufacturer's in the world and ther products and is considered by many as The catalog for all diving equipment manufactured and marketed in US and Europe

    The SCUBA cylinders are and photographed in detail listed on page 34 &35. All SCUBA cylinders are round bottomed ,
    No flat or bump bottomed SCUBA cylinders

    However diving has progressed a long way since 1960s and their are more manufactures suppling cylinders to day so there is the possibility of round bottom, con cave and bump bottom cylinders in the market place today,

    Once again I would suggest the @herman review his sources to verify my findings

    Cheers
    Sam Miller, III
    (FYI- @EireDiver606 The Fighting Irish won their 11 strait football game !!! ! )
     
    EireDiver606 likes this.
  7. Imla

    Imla Divemaster

    # of Dives: 500 - 999
    Location: Oslo, Norway
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    My Favourites for rec dives, D7 300bars. Rec/T1+ D12 232. (I have both convex and concave, but prefer the convex over the concave ones.)
     
  8. Cyborg Pirate

    Cyborg Pirate Barracuda

    # of Dives: 1,000 - 2,499
    Location: Phoenix
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    Another vote here for the LP50’s!!! 2nd is my LP72’s, then my HP120’s then the LP85’s

    However.... I finish up the training this weekend on my Prism2. I don’t see my open circuit gear getting a whole lot of use here in the near future
     
    Compressor likes this.

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