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Hi all,

I'd like to thank everyone who took the time to reply to my post. It was most
informative. I have always been of the opinion that when diving mix you have to
find
the schedule that works best for you and the dive that you are doing. I tried
breaking
on my back gas (16/50) during the deco 30 min bottom @ 210 and the difference
was
amazing. No loggy feeling or low grade headache. I think that I will start
carrying a
120 mix and start using deeper stops. The deco so I will end up with a
32/50/100 as I
was playing around with the tables and that combo seems pretty good.

Thanks again.
Dan

kirvine@sa*.ne* wrote:

> We break to the most hypoxic mix we can breathe all the way up at least
> every twenty minutes, and in the oxygen phase we shorten that to as low
> as 12 minutes with up to 8 minutes off. We do not interrupt the shcedule
> for these "breaks". This routine spares the oxygen damage completely, as
> measured by vital capacity tests that day and the next few days.
>
> Take a look back at what the usdct idiots did - they fried all of their
> divers repeatedly due to ignorance of how to properly do this.
>
> The "clock" concept" is somewhat arbitrary and based on empirical
> evidence - the breaks have extended the time to tox in tests. More
> important, however, is the Navy experience which says that tox risks
> comes in multiday exposures, so keep that in mind.
>
> Dan MacKay wrote:
> >
> > Hi George and to anyone who might have an answer,
> >
> > On my longer dive profiles which are typically 30 - 50 minutes @ 250', I
always
> > use a 16/50 mix with 50% & 100% for deco. At the end of these dives (or
longer
> > duration) I have blown my CNS clock away. For a 50 minute exposure I have a
total
> > CNS clock of ~180%. This does not appear to cause me a problem as I have
been
> > doing a couple of dives a week using profiles like this for a couple of
years now
> > and this has not proved a problem. The only time I think that I ran into
this as
> > a problem was about 4 years ago when I was diving a lot of deep air with 36
and
> > 80 for deco (ok it was before I saw the light) on the last two dives I did
in a
> > two week period I couldn't breath by the time I hit my 20' stop. Symptoms
didn't
> > abate till I was on the surface for about 15 min. In anycase I don't do
that now.
> > I know this is small potatoes compared to what you and JJ do on a normal
WKPP
> > dive. What do you do just ignore it? or what is your philosophy on this?
> >
> > Thanks,
> > Dan

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