Quote:
| Originally Posted by [b Quote[/b] (wetlettuce @ April 21 2004,10:58)]Regarding the supposed he bend. So you don't think that an increase in pn2 was to blame? Moving from 17/40 to 32% nitrox at 39 mtrs is quite a jump IMHO. 2.3 pn2 to 3.4 pn2. How can you ever know exactly which gas is causing the bend? Sounds like the usual helium is devil gas story. |
In 20 years time when you have as much diving experiance as the chap who got bent I have no doubt you will be able to tell the diferance like he can.
You dont fix a Nitrogen bend breathng atmospheric presure 02
As far as the jump is concerned Andrew and I looked at this with Mark Elliot and it was right on the edge of acceptable using his new counter defusinon calculator. It should also be said that I have dived a lot deeper with more 02 and more He in the mix and switched to 32% without incident on deco.
If an old fat git like me can get away with it I would sugest a majority of other divers would too. HE in the deco mix is a new thing. Switcing from back gas to 32% has been going for years without aparent incident.
ATB
Mark Chase