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**Gill Envy** · 21st January 2008, 18:37

I'm starting to feel just willfully ignorant about He and having a chance to experience it early on may have helped me get over the jitters. Tri-mix has haunted me for many years. Maybe it's that one thing that I keep resisting to help stay in denial that I am tec diving. Under current mod1 certification perameters, it seems that it's arguably dangerous to stay close to the max depth for any length of time without the benefits of the "lite gas".

Mixing the words recreational and trimix might just be a good thing. It's a bit tricky though as diving conditions are so radically different around the world. Mod 1, in cold water adds a lot of factors. Cold water requires a dry suite, a dry suite and a rebreather pose a significantly increased risk of uncontrolled ascent. I have accepted the fact that I will never be as nimble on a rebreather as I was on OC. I agree that Bouency control must be mastered before adding a greater consequence to uncontrolled ascent but I don't know enough about He to know where that line should be drawn.

That said it seems that there is a big gap between mod1 and mod2 for those of us that get into rebreathers without previous technical training. You could use that to argue that taking longer to get into trimix would be better or you could say that starting out with a little He in the mix early on is particularly valuable for those who have no experience to go on and may have irrational misconceptions about it. I'd like something in between mod1 and 2 to be more prepared to deal with longer periods at the deeper end of the certification, but I also think that throwing the opportunity of experiencing a little He into mod 1 would help the likes of me get past the mind block of "The Demon Gas". If I find it's the "paper tiger" that some are saying, i'll be frustrated I didn't figure that out a lot sooner.

21st January 2008, 18:37	#41 (permalink)
Gill Envy Shearwater Copis Divers Current Rebreather/s: Other CCR Other Rebreather/s: Evolution Other CCR Join Date: Nov 2005 Location: seattle Posts: 1,326	Re: Normoxic Trimix in Mod 1??? I'm starting to feel just willfully ignorant about He and having a chance to experience it early on may have helped me get over the jitters. Tri-mix has haunted me for many years. Maybe it's that one thing that I keep resisting to help stay in denial that I am tec diving. Under current mod1 certification perameters, it seems that it's arguably dangerous to stay close to the max depth for any length of time without the benefits of the "lite gas". Mixing the words recreational and trimix might just be a good thing. It's a bit tricky though as diving conditions are so radically different around the world. Mod 1, in cold water adds a lot of factors. Cold water requires a dry suite, a dry suite and a rebreather pose a significantly increased risk of uncontrolled ascent. I have accepted the fact that I will never be as nimble on a rebreather as I was on OC. I agree that Bouency control must be mastered before adding a greater consequence to uncontrolled ascent but I don't know enough about He to know where that line should be drawn. That said it seems that there is a big gap between mod1 and mod2 for those of us that get into rebreathers without previous technical training. You could use that to argue that taking longer to get into trimix would be better or you could say that starting out with a little He in the mix early on is particularly valuable for those who have no experience to go on and may have irrational misconceptions about it. I'd like something in between mod1 and 2 to be more prepared to deal with longer periods at the deeper end of the certification, but I also think that throwing the opportunity of experiencing a little He into mod 1 would help the likes of me get past the mind block of "The Demon Gas". If I find it's the "paper tiger" that some are saying, i'll be frustrated I didn't figure that out a lot sooner. __________________ Gill Envy ...Because I wasn't born with gills! ><(°>><(°>><(°>><(°>><(°>><(°>><(°>><(°> Last edited by Gill Envy : 21st January 2008 at 18:41.
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