Welcome to the Cave Diver's Forum.
+ Reply to Thread
Page 2 of 6 FirstFirst 1 2 3 4 ... LastLast
Results 11 to 20 of 56
  1. #11
    Guest

    Default

    Quote Originally Posted by aw
    ...everyone dropping at the same time is the more conservative approach.
    Not really. One way to look at this is to see which approach leaves you with more backgas at the dive's maximum penetration.

    Say Kim and I make a stage dive. We drop stages at 1/2 +200, and turn the dive at 1/3 of backgas. It's a given that Kim will turn the dive. In the first scenario, we both drop stages, then she turns the dive on thirds. I have a little more than 2/3 left.

    But in the second scenario, I don't drop my stage until long after she has. So that means that for every cubic foot of extra gas I breathe out of my stage, that's how many more cubic feet I have in my doubles, so I'm not even close to thirds.

    In an emergency, having lots of gas on your back is the name of the game.

    But whichever way makes you the most comfortable!


  2. #12
    Member
    Join Date
    Oct 2004
    Location
    Georgia, USA
    Posts
    301

    Default

    Quote Originally Posted by Slüdge
    In an emergency, having lots of gas on your back is the name of the game.
    Yeah, I suppose so. I guess there's some pros and cons to both approaches. On a typical dive assuming nothing goes wrong, I'd love to drop that bottle asap if im going to get turned earlier than my thirds anyway.


  3. #13
    Member
    Join Date
    Dec 2004
    Location
    Murfreesboro, Tennessee
    Posts
    3,270

    Default

    Quote Originally Posted by Slüdge
    Quote Originally Posted by aw
    ...everyone dropping at the same time is the more conservative approach.
    Not really. One way to look at this is to see which approach leaves you with more backgas at the dive's maximum penetration.

    .....

    In an emergency, having lots of gas on your back is the name of the game.
    more backgas is not necessarily the name of the game - like when it's your first stage that blows, or a backgas tank valve. having a stage with a bit more gas is then the name of the game. I dive the stage to 1/3, everyone drops stages when first team member hits thirds; plenty of gas for back gas failures (if you can make it to stages you are home free). And if someone else grabbed your stage and you get back and it's gone, well there's enough gas in the stage tanks for all team members to exit safely.

    I am much more comfortable with more than enough gas in my stage for two to exit on it, than with keeping a few hundred extra psi in my backgas.

    but I'd still dive with you whether it's half or thirds for stage and whether or not you drop it when I do.

    -skip

    "Learning the techniques of others does not interfere with the discovery of techniques of one's own." B.F. Skinner, 1970.

  4. #14
    Member
    Join Date
    Jan 2005
    Location
    Orlando, Fl.
    Posts
    1,671

    Default

    Quote Originally Posted by Slüdge
    Not always. There are two schools of thought: one says that everybody drops stages when one person hits a given pressure. The other says that each person drops his/her stage when he/she hits the number. Almost every team I dive with belongs in the second group.
    There is a third and forth option to consider too.

    3 everyone drops at a predetermined place regardless of pressure, you may have switched to back gas 100 ft ago but this is a better place to drop. IE just before the Hill 400 jump is better than after.

    4 Keep your bottle with you. You will notice with a properly fitted stage and proper swim technique you are very comfortable. If you solo often you swim with AL right?


  5. #15
    Moderator
    Join Date
    Oct 2004
    Location
    south Georgia
    Posts
    7,398

    Default

    I frequently dive river cave that has old twisted nylon line that doesn't give you a warm and fuzzy when you look at the condition. In those cases I never clip a stage to the line in fear that the line may break. I run a reel from the line to a drop point,and place my stage on the line from my reel.


  6. #16
    Member
    Join Date
    Jun 2005
    Location
    Ft. White , Florida
    Posts
    894

    Default

    Quote Originally Posted by Kelly Jessop
    I frequently dive river cave that has old twisted nylon line that doesn't give you a warm and fuzzy when you look at the condition. In those cases I never clip a stage to the line in fear that the line may break. I run a reel from the line to a drop point,and place my stage on the line from my reel.
    COOL !
    Thanks for the idea...Never thought of that one.
    See , us newbies always learning...
    I'll keep that one in my "pocket" , if you don't mind.

    Jeano Beano

    Oh Lord , keep us safe , ALWAYS safe , and keep ME PRUDENT , ALWAYS PRUDENT !!!

  7. #17
    Member
    Join Date
    Jun 2005
    Location
    Ft. White , Florida
    Posts
    894

    Default

    Quote Originally Posted by jeandiver
    Quote Originally Posted by Kelly Jessop
    I frequently dive river cave that has old twisted nylon line that doesn't give you a warm and fuzzy when you look at the condition. In those cases I never clip a stage to the line in fear that the line may break. I run a reel from the line to a drop point,and place my stage on the line from my reel.
    COOL !
    Thanks for the idea...Never thought of that one.
    See , this newbie is always learning.
    I'll keep that one in my "pocket" , if you don't mind.

    Jeano Beano
    SIGH!!!!
    Sowwy for the double post.
    Gads , I swear sometimes.

    Da Blushing Bean

    Oh Lord , keep us safe , ALWAYS safe , and keep ME PRUDENT , ALWAYS PRUDENT !!!

  8. #18
    Member
    Join Date
    Oct 2000
    Location
    Georgia
    Posts
    24,000

    Default

    Quote Originally Posted by Kelly Jessop
    I frequently dive river cave that has old twisted nylon line that doesn't give you a warm and fuzzy when you look at the condition. In those cases I never clip a stage to the line in fear that the line may break. I run a reel from the line to a drop point,and place my stage on the line from my reel.
    That is also useful where the line isn't near the floor at the drop point. Trying to hang stages from the line is never a good idea.

    Forrest Wilson (with 2 Rs)
    Any opinions are personal.
    Sump Divers

  9. #19
    Administrator Forum Admin
    Join Date
    Oct 2004
    Location
    Murfreesboro, TN
    Posts
    1,985

    Default

    You can also take a lift bag, inflate it to pin it on the ceiling and clip them to that with a line to the main. Handy if the mud or silt is really bad where you'd like to drop and you have enough room.

    Of course you'd want to make sure the lift bag could hold all the bottles you wanted to hang from it. And it might be better not to use one with an open bottom to prevent accidental dumpage.

    Marbry


  10. #20
    Administrator Forum Admin
    Join Date
    Oct 2004
    Location
    Murfreesboro, TN
    Posts
    1,985

    Default

    more backgas is not necessarily the name of the game - like when it's your first stage that blows, or a backgas tank valve. having a stage with a bit more gas is then the name of the game. I dive the stage to 1/3, everyone drops stages when first team member hits thirds; plenty of gas for back gas failures (if you can make it to stages you are home free). And if someone else grabbed your stage and you get back and it's gone, well there's enough gas in the stage tanks for all team members to exit safely.

    I am much more comfortable with more than enough gas in my stage for two to exit on it, than with keeping a few hundred extra psi in my backgas.

    but I'd still dive with you whether it's half or thirds for stage and whether or not you drop it when I do.

    -skip
    It will leave you with more gas in some of the stages, but it also means it will be farther back to get to the first stage bottle than if each person had dropped when they needed to individually.

    Marbry



 

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts