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  1. New version 1.95 / 2.95 of V-Planner and...

    New version 1.95 / 2.95 of V-Planner and MultiDeco on iOS, is with iTunes now and should come available in the next while.


    MultiDeco iOS ...
  2. Hi, A bug in the new version meant I had to...

    Hi,

    A bug in the new version meant I had to stop distribution of it. And the only way is to pull it from the store temporarily. A fixed version will be out in a day or so.

    Sorry for the...
  3. Thread: Helium penalty

    by rossh
    Replies
    86
    Views
    8,022

    Simon, Your premise appears to be that any...

    Simon,

    Your premise appears to be that any tiny amount of supersaturation - the thinnest and slightest amount possible, will lead to a DCS. But the reality is that it does not work that way. ...
  4. Thread: Helium penalty

    by rossh
    Replies
    86
    Views
    8,022

    study 2. Nice study on skin bends. I hope E....

    study 2. Nice study on skin bends. I hope E. Garcia keeps investigating further.

    study 1. Once again... Your comments are dancing around between intravascular and extravascular conditions,...
  5. Thread: Helium penalty

    by rossh
    Replies
    86
    Views
    8,022

    According to the physics.... The gas does not...

    According to the physics.... The gas does not diffuse into the bubble, because the bubbles internal pressure is higher than the ambient pressure outside. This comes from Law of Laplace, surface...
  6. Thread: Helium penalty

    by rossh
    Replies
    86
    Views
    8,022

    It depends on the source of information. In...

    It depends on the source of information. In models and tables its 21 to 24 ft. This is your NDL of a different kind, so yes you can ascend to surface. With water vapor pressure accounted for,...
  7. Thread: Helium penalty

    by rossh
    Replies
    86
    Views
    8,022

    What is the minimum decompression depth? i.e....

    And you know this how in the context of surfacing from a dive? A saturation dive to 1.36 ATA (supersaturation of 0.36 at the surface) has been shown to produce venous gas emboli (VGE) [1]. In...
  8. Thread: Helium penalty

    by rossh
    Replies
    86
    Views
    8,022

    Point of clarity. At surfacing, In a normal air...

    Point of clarity. At surfacing, In a normal air deco dive (not saturated) the slowest and fastest tissues will not be supersaturated. They will be saturated above the air inspired pressure line,...
  9. Thread: Helium penalty

    by rossh
    Replies
    86
    Views
    8,022

    There are serial model designs, where gas does...

    There are serial model designs, where gas does flow between cells: Kidd-Stubbs, SAUL, and more, where gas flows between cells. These are not used in tech diving.


    The typical 16 cell dissolved...
  10. Thread: Helium penalty

    by rossh
    Replies
    86
    Views
    8,022

    Take a page from the USN, and the pDCS style...

    Take a page from the USN, and the pDCS style formula. They don't use raw SS pressure in this way, and they don't add up adjacent cells times, because they overlap - it uses 3 well spaced cells only....
  11. Thread: Helium penalty

    by rossh
    Replies
    86
    Views
    8,022

    Big picture? Your surface supersaturation off...

    Big picture? Your surface supersaturation off gasses at a fixed rate. The only real control you have over it is what level it starts at, which is set by the length/time of the last stop. Surface...
  12. Thread: Helium penalty

    by rossh
    Replies
    86
    Views
    8,022

    Its called supersaturation. This the well...

    Its called supersaturation. This the well accepted basis of tissue micro-bubble growth, and the basis of most deco model formula. Supersaturation pressure is the very dimension that GF is...
  13. Thread: Helium penalty

    by rossh
    Replies
    86
    Views
    8,022

    You have this backwards. It is Simon with the...

    You have this backwards. It is Simon with the theory and trying to make new science and new claims. It is his theories and explanations under review, and they are flawed. I raised and contested...
  14. Thread: Helium penalty

    by rossh
    Replies
    86
    Views
    8,022

    You keep trying to imagine the nedu test used...

    You keep trying to imagine the nedu test used deep stops. It did not.

    You keep trying to imagine the nedu's 5 to 10 times magnification of the ascent in the 18m to 9m region, was somehow...
  15. Thread: Helium penalty

    by rossh
    Replies
    86
    Views
    8,022

    But that does not support your current position...

    But that does not support your current position or theories. You can't seem to tell the difference between a multilevel plan and a deep stop. You promote a theory and scare people about an on...
  16. Thread: Helium penalty

    by rossh
    Replies
    86
    Views
    8,022

    John (?), Authors normally do not use the...

    John (?),

    Authors normally do not use the internet or public to discuss the papers - it is the wrong forum. They certainly avoid arguing in the public. So the first point you make is...
  17. Thread: Helium penalty

    by rossh
    Replies
    86
    Views
    8,022

    You asked, so here it is. It is not a "my...

    You asked, so here it is.

    It is not a "my science vs your science" argument. Problem is, and continues to be Simon's interpretations of the papers and his opinion of them that he pushes onto us. ...
  18. Thread: Helium penalty

    by rossh
    Replies
    86
    Views
    8,022

    Simon. You just conceded to the reality that...

    Simon. You just conceded to the reality that the Nedu study A2 profile is NOT a "deep stop", but is in fact a multi-level ascent plan. That's a point I have made a thousand times, and you kept...
  19. Thread: Helium penalty

    by rossh
    Replies
    86
    Views
    8,022

    Simon, Here is the Nedu profiles, with a GF...

    Simon,


    Here is the Nedu profiles, with a GF Lo scale applied. Readers can see for themselves what the nedu profiles were.

    http://www.hhssoftware.com/images/nedu_gf_graph.png


    How...
  20. Thread: Helium penalty

    by rossh
    Replies
    86
    Views
    8,022

    The Nedu study used profiles that were...

    The Nedu study used profiles that were approximately... GF 60/77 for the "deep" one. and 105/60 for the shallow one. He pretends these are relevant to tech diving, and falsely imagines they...
  21. Thread: Helium penalty

    by rossh
    Replies
    86
    Views
    8,022

    In MultiDeco - the desktop version, you can put...

    In MultiDeco - the desktop version, you can put this 'helium penalty' theory to the test. There is a control screen where you can set the "new" rates and half times and co-efficient's, for both ZHL...
  22. Replies
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    from ...

    from https://www.ssllabs.com/ssltest/analyze.html?d=www.thediveforum.com

    This server's certificate chain is incomplete. (the trust chain is missing some intermediate certs). The intermediate...
  23. Replies
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    Something you may not know, or have forgotten, ...

    Something you may not know, or have forgotten, the recreational dive space has been tested for mid water deep stop insertion, like the ones described here. The results showed improvements with...
  24. Replies
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    19,413

    Unfortunately, without people such as Ross...

    Unfortunately, without people such as Ross posting responses, the distorted claims of Simon would go unopposed and someone (who does not bother to do a decent amount of research) might just take it...
  25. Replies
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    19,413

    .. is considered to be correlated with the...

    .. is considered to be correlated with the probability of DCS.

    A probability that is so low and immeasurable, that it virtually imaginary. In the real world, millions of exposures over 50 years,...
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