Mailing List Archive

Mailing List: techdiver

Message Display

Art, I am saying that planing an unnecessarily long deco in open ocean
is nuts when you dould do two dives and have basicly the same overall
deco, with less risk in each dive. Think it thgough for yourself.

 I am also saying that using 40's or 30's for deco makes a lot more
sense for all of the reasons I stated before.

 With regard to "air" I am saying that most trimixes can be decompressed
on without much diffence from what you would do had it been air instead
of trimix, and I treat it as a faster deco.

  For example, if you were diving something like 18/30 for a 220 foot
dive, and you "lost" you 50/50, you would only have to lengthen your
intermediate stops by a small amount. If you lost your oxygen, it would
reaqlly not be a 3whole lot worse than air since you are dealing with
helium.
 
  Helium is not the boogee man that the storkes say it is - it is yoiru
friend. - G

Art Greenberg wrote:
> 
> George,
> 
> You seem to be making the following points re: deep ocean trimix dives (I
> want to be sure I've read you correctly):
> 
> 1. Don't plan a dive that calls for more shallow deco than can be
> accommodated with a 40cf supply of deco gas.
> 
> 2. Carry only one extra gas, that being the shallow deco gas.
> 
> 3. The shallow deco gas should be air.
> 
> Yes?
> 
> Thanks,
> 
> =Art=
> artg@ec*.ne*
> 
> ----------
> > From: G. Irvine <gmirvine@sa*.ne*>
> > To: Thomas A. Easop <tae@os*.pe*.ne*>
> > Cc: techdiver@aquanaut.com
> > Subject: Re: travel / deco gas choices
> > Date: Monday, June 16, 1997 7:47 AM
> >
> > This is all nonsense - "travelling" is a joke for two reasons: one, it
> > is an unnecessary conplication and opens you up to added risk, like
> > dropping too far on the gas while dealing with another problem, not
> > knowing if yoiu primary euipment is funcitoning, like the wings,
> > foprgetting top turn off and park the deco reg, making it a liability,
> > etc, etc, and the other is that you do not get the immediate befit of
> > the gas being breathed for up to two minutes, so are effectively diving
> > beyond the clarity level of the gas. In a cave, it is diffeernet since
> > yo stop and make the switch , leaving the bottle.
> >
> >  Another thing is that incurring a huge deco liabiltiy in the ocean is
> > nuts. Use the 40's for safety of streamlining and simplicity, and for
> > the lesser buoyancy effect on your total package.
> >
> >  Personllya, I think only a total stroke would use 80/20, but we will
> > not go into that since it is part of the silliness you all get taught,
> > along with "travel mixes" and deco fear. The fact is, tough guys, you
> > can deco on most trimixes without any deco gas better than air on air,
> > but then why am I not suprosed that none of you know this?
> >
> >  The trick to really having fun with this and being good at it is to
> > simplify you rig and get rid of the crap, including the crap you learned
> > from the tech agencies.
--
Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'.
Send list subscription requests to `techdiver-request@aquanaut.com'.

Navigate by Author: [Previous] [Next] [Author Search Index]
Navigate by Subject: [Previous] [Next] [Subject Search Index]

[Send Reply] [Send Message with New Topic]

[Search Selection] [Mailing List Home] [Home]