Mailing List Archive

Mailing List: techdiver

Message Display

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.

Thomas A. Easop wrote:
> 
> CHKBOONE@ao*.co* wrote:
> >
> > Kevin,
> > <snip>
> > 40 cu ft is not enough.   If you run a 1/3 reserve on your deco gases you
> > will need something on the order of 60 to 75 cu ft in many cases.   Make
sure
> > the valves on deco tanks are the same (yoke or din - recommend yoke) so you
> > can switch regulators if needed.  Otherwise you will have no back up plan of
> > any kind for deco gas regulator failure without hauling another 10 pounds of
> > redundant regulators.
> 
> I was taught that you could use one gas as a bailout for another, in the event
> of a gas failure (run out, lost stage cylinder, regulator problem.)You must
have
> a back up table. For instance, if Nitrox 32 fails, if you have a backup table,
> you can deco on your bottom mix until you are shallow enough to start on the
> 80/20. Or if the 80/20 fails, you have the 32/68. This can be a long time in
> the sea. Another option is to have octopus regs on all the stages, and have a
> supply large enough for you and your buddy. I use an H valve on the 32/68, and
> just a regular reg on the 80/20. This way, the 32/68 is backed up with a
redundant
> reg, and the 32/68 is the back up for the 80/20.
> 
> > Gauges on deco gases???   They add weight and failure points and you will
not
> > have to worry about losing gases if these valves are off till needed.
> >   Still, there may be times or conditions where they are wise since even
> > though you can't often do anything about being low on a gas creative
> > management during deco may be a factor in some cases.   They also let your
> > partner know your status at a glance if it comes into question.
> 
> I always have them on the deco gas becuase good decisions can only be made on
> good data. If a reg freeflows I can use it and tell when I'm going to need to
> do something different. I always use them becuase I try not to deviate
> configurations from dive to dive.
> 
> Why do you recommend yoke valves over DIN for the stage cylanders?
> 
> Tom
> --
> Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'.
> Send list subscription requests to `techdiver-request@aquanaut.com'.
--
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]