Mailing List Archive Mailing List Archive
Hi Folks I have been folowing the rebreather artciles with great interest. The majority of diving that I personally do is shore with a growing interest in deep/tech. I don't think I want a rebreather, other than no bubbels what will it give me in return for a great increase in complexity. On my shore dives I want about an hours bottom time, this means about 100CuF tank, on My deep dives I am not going to spend more than 20mins due to the deco times. I also want reduntancy ie two rigs again about 100CuF each. Deeper Mix dives (not into yet but getting there) I think you add another 2 tanks or so. What is the point to all this.... What I want is some small super high pressure tanks. A tank about half the size of my current steely holding about 600Bar (8820psi). This pressure should not be too hard to achive. I currently have a set of the InterSpiro high presure twins. They are a set of two small cylinders set up as twins each holding about 44CuF at 300bar (4410psi), they are very comfrotable in the water as they sit snug and flat into your back. Their Hydro test pressure is on the order of 5400psi so we are getting close to the pressure that I want. All this means my shore dives would be comfortable because of the little signle tank and my deep would only require a much smaller set of twins. The tanks could be made with a special regulator in the valve to drop the 600bar to about 200bar odd, so it is compatible with my current gear. I realise that filling is going to be a small problem %8-0, but a compressor to fill these preasures is available in the industrial areana, and is simply an extension of existing technology so nothing new there, instead of everyone haveing to learn all about the technology involved in rebreathers the new tech is in a central location of the dive shop. This means a one off cost to the fill shops but this can be covered in slightly increased fill cost and should work out cheaper overall than rebreathers. I realise that this does not address the needs of cave divers of very long duration dives, but how many of these are there compared to the rest that will not be able to afford the cost of a rebreather or the level of technology. It also complicates cascade fills of mixed gasses, but again oilless cascade compressers are available. I don`t think that these tanks would be any more of a danger than the existing tanks at least here in Australia where we have yearly hydro tests (I don't think a 5 year interval is reasonable for any tank). Just some ideas I thought I might throw in for desucion. Later Terry -- ******************************************************************** Terry McCracken GEC ALSTHOM Information Technology Software Support Engineer Ph: 61 2 415 0509 terrym@ns*.co*.au* Fax: 61 2 417 8635
Navigate by Author:
[Previous]
[Next]
[Author Search Index]
Navigate by Subject:
[Previous]
[Next]
[Subject Search Index]
[Send Reply] [Send Message with New Topic]
[Search Selection] [Mailing List Home] [Home]