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**fireman** · 4th May 2008, 13:30

Dr. Mike--no old bold divers, absolutely.

This subject is interesting, I wonder what the comercial and military does, I believe they have both been using heliox for a long time. I'm sure rubicon has some info on the subject. I also believe that the models that we use are not really "good" with heliox. I suspect that it may be possible to do a profile with essentially a long slow descent--lots of short deep stops, and do a safe profile with time similar or shorter than a trimix profile. But I not going to do the research on myself by trying it. I also "wonder" about agressive gas switching, if it is possible to toggle back and forth between N mixes and heliox and avoid IBCD. I believe there should be significant advantages to heliox on CCR's, while avoiding open circuit disadvantages such as cost and multiple gas mixes.

4th May 2008, 13:30	#26 (permalink)
fireman rEvo combat swimmer Current Rebreather/s: rEvo Other CCR Other Rebreather/s: rEvo Other CCR Join Date: Nov 2006 Location: chicago Posts: 522	Re: Trimix Versus HeliOx and Deco time Dr. Mike--no old bold divers, absolutely. This subject is interesting, I wonder what the comercial and military does, I believe they have both been using heliox for a long time. I'm sure rubicon has some info on the subject. I also believe that the models that we use are not really "good" with heliox. I suspect that it may be possible to do a profile with essentially a long slow descent--lots of short deep stops, and do a safe profile with time similar or shorter than a trimix profile. But I not going to do the research on myself by trying it. I also "wonder" about agressive gas switching, if it is possible to toggle back and forth between N mixes and heliox and avoid IBCD. I believe there should be significant advantages to heliox on CCR's, while avoiding open circuit disadvantages such as cost and multiple gas mixes. __________________ Heres to you Capt. Bill Never Forget, and stay safe everyone.
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