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  1. #51
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    Quote Originally Posted by M-J-J View Post
    Three stages is going to involve hypoxic gas for the vast majority of dives.
    Unless you're an awkward fooker like JonG :-P

  2. #52
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    Quote Originally Posted by WFO View Post
    Unless you're an awkward fooker like JonG :-P
    I was about to say the same. Carrying three stages for the 60m seems to be adding safety with one hand and taking it away with the other. The chance of a gas balls up seems to increase massively. I could get behind back mounting another cylinder of 100% with a reg attached. Seems like it would add more options and be a little more useful all round

  3. #53
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    It is swings and roundabouts, but in all the plans I ran using my chosen RMVs carrying 2x7s and 1x3 gave better gas margins than 2x80's in what I consider to be a manageable configuration for the zone between 55 and 70. Arguably the weight and size of the kit is easier to manage top side too in comparison with twin 80s which is also part of the risk assessment in my mind.

    Cylinder size, location and reg location assist in the correct switching protocol and can be learned and practiced, breathing seawater is a bit trickier!

    For me first switch is BOV, then necklaced 2nd stage if BOV compromised by cocktail for example.

    50% is on left in 3l, 80% on right in 7l.

    Certainly same cyls, rotation on leash etc. needs more practice and brain power but it's doable if you take the time, otherwise more GUE lads would be dropping like flies.

    As with most things in diving practice and familiarisation is the key.
    Last edited by JonG; 24-10-2018 at 06:39 PM.

  4. #54
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    Quote Originally Posted by WFO View Post
    Unless you're an awkward fooker like JonG :-P
    I did swanage pier on the inspo with two stages... I don't think he is awkward

  5. #55
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    You haven't seen me in social situations.....

  6. #56
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  7. #57
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    FWIW I used the 2xsevens, 1x300b three on proper dives last weekend and it worked fine, the 3rd tin is small enough to clip yourself and genuinely didn't notice it in water.

    The sevens were left and right with the 3 on the left, which helped hold down the helium rich bottom stage.

  8. #58
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    Quote Originally Posted by JonG View Post
    FWIW I used the 2xsevens, 1x300b three on proper dives last weekend and it worked fine, the 3rd tin is small enough to clip yourself and genuinely didn't notice it in water.

    The sevens were left and right with the 3 on the left, which helped hold down the helium rich bottom stage.
    Glad to hear it worked well, where did you dive?

    Ps...you know diving L R will kill you immediately right??!


 
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