Hello and welcome to our community! Is this your first visit?
Register

Search:

Type: Posts; User: shapeshifter

Page 1 of 20 1 2 3 4

Search: Search took 0.03 seconds.

  1. Replies
    12
    Views
    1,186

    I'm 5'7" and fairly scrawny, and in my trunks,...

    I'm 5'7" and fairly scrawny, and in my trunks, 2Kg would sink me. A back-of-the-envelope calculation tells me that each 10Kg of extra fat would add about 1kg of lead to that (this coincides with my...
  2. Replies
    8
    Views
    456

    That's a square knot; I always find a fisherman's...

    That's a square knot; I always find a fisherman's knot unnecessarily bulky on anything except fine line.
  3. Replies
    12
    Views
    1,186

    I got intrigued enough by the question to start...

    I got intrigued enough by the question to start following some links and ended up with the following very interesting paper:
    ...
  4. Replies
    12
    Views
    1,186

    I'm always amazed when I hear about people who...

    I'm always amazed when I hear about people who need double figure amounts of lead to get themselves to sink.

    I mean, we're all made of basically the same stuff with basically the same density so...
  5. Replies
    8
    Views
    456

    DSMB attachment

    So, I got tired of my DSMB hanging off a d-ring and decided to see if I couldn't come up with something better:

    https://i.postimg.cc/kG07wG9k/20191026-094909.jpg

    Which also (rather cunningly in...
  6. Replies
    1
    Views
    830

    Other than the shaky upgrade cycle, what do you...

    Other than the shaky upgrade cycle, what do you think of it as a dive computer?
  7. Replies
    5,097
    Views
    254,182

    Unless you're eating them at home, odds are that...

    Unless you're eating them at home, odds are that you're eating them with salt and acidic non-brewed condiment.

    Grated cheese on chips, yum-yum.
  8. I have a neoprene neck seal and latex wrist seals...

    I have a neoprene neck seal and latex wrist seals and have no complaints. The same would probably be true for any other combination though.
  9. Replies
    95
    Views
    9,624

    That seems a bit harsh. he's only trying to...

    That seems a bit harsh. he's only trying to understand how things work; not telling everybody who replies that they're wrong.
  10. Replies
    95
    Views
    9,624

    "Linearity" in this context describes the way...

    "Linearity" in this context describes the way that the cell output varies with respect to its input and specifically "how close is it to a line of constant gradient".

    Current limiting is an...
  11. Replies
    95
    Views
    9,624

    A lot of the content you linked seemed to be...

    A lot of the content you linked seemed to be discussing the idea that the calibration constants could somehow become lost or corrupted without anything else in the software being damaged.

    Although...
  12. Replies
    95
    Views
    9,624

    The underlined part is incorrect as 0.02 bars...

    The underlined part is incorrect as 0.02 bars oxygen could also give essentially 0.000 Volts. Since with two known measurements you can calculate both the gain and DC offset there's no reason not to...
  13. Replies
    95
    Views
    9,624

    To be honest, I'm still not getting it. How is...

    To be honest, I'm still not getting it.

    How is knowing that a cell is reading 500mV instead of the exact same thing displayed as 1.2 bars going to help you detect current limiting? The problem is...
  14. Replies
    95
    Views
    9,624

    As far as I'm aware, PO2 P is calculated from the...

    As far as I'm aware, PO2 P is calculated from the voltage reading V using the simple relationship

    P = a + bV

    Where the a and b coefficients are calculated during calibration at two known values...
  15. Replies
    95
    Views
    9,624

    I don't want to sound like a duffer, but what do...

    I don't want to sound like a duffer, but what do you mean by "mv"? The voltage reading in millivolts across the load resistor?
  16. Replies
    26
    Views
    1,885

    Clearly, the less nitrogen the better, but since...

    Clearly, the less nitrogen the better, but since the gas is being treated as the worst case (air) anyway, it doesn't seem to make any difference (within the bounds of the MOD) how much there actually...
  17. Replies
    189
    Views
    10,648

    Just do it in a pool, without any scuba...

    Just do it in a pool, without any scuba equipment, holding your breath. When you start feeling pressure on your ears blow into your nose until it goes away. You don't need to worry about looking for...
  18. Replies
    29
    Views
    2,776

    The difference is of course measurable - my...

    The difference is of course measurable - my aqualung legends have failed the en250 test on an Ansti machine allegedly due to one or both of the adapters or long hose (they've also passed in the same...
  19. Replies
    189
    Views
    10,648

    Just go to a pool and swim towards the bottom. By...

    Just go to a pool and swim towards the bottom. By the time you reach two metres you should be feeling some pressure in your ears at which point you should pinch your nose and blow into it.

    Your...
  20. Replies
    29
    Views
    2,776

    I think that they pretty much all do. However,...

    I think that they pretty much all do. However, very much like the theoretical loss associated with a long hose, it doesn't seem to make any difference in practice.
  21. Replies
    29
    Views
    2,776

    I don't know which brand they are - ESM most...

    I don't know which brand they are - ESM most likely.

    I only use them for strain relief on the LP hoses because I didn't much like the look of the sharp bends but whilst you're actually in the...
  22. Replies
    29
    Views
    2,776

    I have little 90° adapters on mine.

    I have little 90° adapters on mine.
  23. Replies
    65
    Views
    21,056

    Been busy adding support for cell monitoring and...

    Been busy adding support for cell monitoring and boosting the UI a little.

    Here's what the dive page looks like these days:

    https://i.postimg.cc/9X4PmHnm/20191115-111028.jpg

    And thé plan...
  24. Replies
    6,470
    Views
    949,917

    I've never heard it called anything except the...

    I've never heard it called anything except the rather unimaginative Lac d'Annecy.
  25. Replies
    6,470
    Views
    949,917

    Night dive on wreck of The France, Lake Annecy ...

    Night dive on wreck of The France, Lake Annecy

    https://i.postimg.cc/W30ZtjZb/20191109-004212.jpg
Results 1 to 25 of 500
Page 1 of 20 1 2 3 4