Trey at trey@ne*.co* wrote:
> Steve, you have been fed total bullshit - nothing you are saying is true
> other than that for any gas, slow ascents are obviously better,

I got some of my information from the web site listed and you are quoted in
the article. 

Steve

http://www.cisatlantic.com/trimix/descrip.htm

So why helium?
Helium is a non-toxic, colorless, odorless, tasteless, inert, lightweight
and nonexplosive gas. To quote George Irvine head of the WKPP: "Helium is
our friend".
Advantages of helium:
-Narcotic effects are nil.
-Due to its lower density, breathing resistance at depth is significantly
reduced.
-Helium off-gasses rapidly and it does not enter slow tissues as readily as
nitrogen.
Disadvantages of helium:
-Helium conducts heat 5 times faster than air.
-Hyperbaric arthralgia, an arthritic-like stiffness, can occur during
descent with some divers.
Helium has been used for diving as far back as 1938. The first true test of
heliox diving was the rescue of the submarine Squalus in 1939 in 240 fsw.
Since then helium has been used in dives to more than 2000 fsw.
As helium is less dense than nitrogen, it enters and leaves the tissues
faster than nitrogen. Paradoxically helium requires a little more decom time
with short dives than air, but less decom time on long dives than air. The
key to using helium is slow descents and slow ascents. Additional deep stops
are required when ascending on helium mixes.
Due to helium's ability to leave tissues rapidly, having 2 or more stages,
for example 50% nitrox and 100% O2, allows you to off-gas helium faster than
you could nitrogen.
There is a situation which can occur in depths past 400ft. called High
Pressure Neurological Syndrome (HPNS). This manifests itself with tremors,
muscle twitching and coordination difficulties. Adding a small amount of
nitrogen to your mix can alleviate these symptoms. But then, what are you
doing down there, anyway?




on 5/31/01 2:52 AM, Trey at trey@ne*.co* wrote:

> 
> Steve, you have been fed total bullshit - nothing you are saying is true
> other than that for any gas, slow ascents are obviously better, but from
> reading your deep air bullshit, you have many miles to go on the learning
> curve before anyone can even discuss this intelligently with you. I see that
> idiot Zurl is copied here. He is a big proponent of deep air diving and has
> much experience doing it. He has written articles in local scuba magazines
> extolling the virtues of it so that more people can get killed doing it.
> Start with this moron and maybe you two can figure it out.
> 
> -----Original Message-----
> From: Steve [mailto:sfkenney@ea*.ne*]
> Sent: Thursday, May 31, 2001 12:40 AM
> To: Jim Cobb; Z; Fltechdiver; Tech Diver
> Subject: Re: TriMix Computer Vote RESULTS
> 
> 
> I take it you are the webmaster on the trimix site? Very good work BTW, it's
> a home mixers dream come true. I would like to try some helium diving this
> year. I'm somewhat concerned about the side effects, stiff joints flu like
> symptoms, problems from rapid ascents. Why do you need to make slow descents
> when using helium? With all the talk about the danger of deep air, I've set
> my limit at 150'. I want to learn to dive helium without computers and
> without cutting tables, just have the knowledge to calculate on the fly as I
> go.
> 
> Steve
> 
> 
> 
> on 5/28/01 5:25 PM, Jim Cobb at Cobber@ci*.co* wrote:
> 
>> Once you cut your tables you need to carry them down somehow. Some like to
>> tape them to flat plastic slates. Others combine a bottom timer to a
> conformal
>> plastic slate. Mike Zurl contributed a nice page on how to make one where
> you
>> don't need to use duct tape to write your numbers on.
>> 
>> Jim
>> 
>> On Sunday, May 27, 2001 10:42 PM, Steve <sfkenney@ea*.ne*> wrote:
>>> 
>>> Jim, what do you mean about your new wrist slate section? I'm not
> positive I
>>> want to get way into tech diving because I'm 48 years old but I do want
> to
>>> learn about it. Decompression theory is interesting and it's affects on
> the
>>> body is relevent to me even if I don't go real deep. I may decide down
> the
>>> road to volunteer for a recompression chamber.
>>> 
>>> 
>>> 1) Tables
>>> 2) No tables and no computer
>>> 3) Math equations??
>>> 4) Tabletop software programs
>>> 5) Wrist Computers
>>> by order of preference
>>> 
>>> Steve
>>> 
>>> on 5/27/01 10:35 AM, Jim Cobb at cobber@ci*.co* wrote:
>>> 
>>>> Get yourself a cheap laptop, Decoplanner from www.gue.com, see my new
> wrist
>>>> slate section, purchase a uwatec bottom timer. Then take the $1000 you
> save
>>>> and get yourself a proper set of wings, doubles and regs. If tech diving
> is
>>>> what you want to get into, then you are all set. If you simply have to
> get a
>>>> computer for non-trimix deco dives then go for the DiveRite or Suunto
> Viper
>>>> which has a gauge mode you can use for when you do the deep stuff.
>>>> 
>>>> Jim
>>>> -------------------------------------------------------------------
>>>> Learn About Trimix at http://www.cisatlantic.com/trimix/
>>>> 
>>>>> From: Steve <sfkenney@ea*.ne*>
>>>>> Date: Sun, 27 May 2001 09:43:57 -0700
>>>>> To: Jim Cobb <cobber@ci*.co*>, Z <mzurl@be*.ne*>,
> Fltechdiver
>>>>> <fltechdiver@mikey.net>, Tech Diver <techdiver@aquanaut.com>
>>>>> Subject: Re: TriMix Computer Vote RESULTS
>>>>> 
>>>>> I didn't see the post where I could vote on computers. I don't think I
>>>>> would
>>>>> buy one for $1900 unless I was a professional diver and they were
> proven to
>>>>> work well. Are there two brands on the market now, Dive-Rite and Abyss?
> I
>>>>> believe they monitor three gases and you can switch gas on the fly,
> sounds
>>>>> impressive.
>>>>> 
>>>>> What are the options for a beginner tech diver?
>>>>> 
>>>>> 1) Tables
>>>>> 2) Tabletop software programs
>>>>> 3) Wrist Computers
>>>>> 4) No tables and no computer
>>>>> 5) Math equations??
>>>>> 
>>>>> Steve Kenney
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> on 5/25/01 3:54 PM, Jim Cobb at cobber@ci*.co* wrote:
>>>>> 
>>>>>> Yes, this vote shows that there are 21 IANTD instroketors on Mikey's
> list
>>>>>> here and 4 normal people. This might explain why you boys seem to have
>>>>>> such
>>>>>> a hard time filling tech trips down there, not enough trimix
> computers...
>>>>>> 
>>>>>> Anyway, moving right along...
>>>>>> 
>>>>>> -------------------------------------------------------------------
>>>>>> Learn About Trimix at http://www.cisatlantic.com/trimix/
>>>>>> 
>>>>>>> From: "Z" <mzurl@be*.ne*>
>>>>>>> Date: Fri, 25 May 2001 18:23:09 -0400
>>>>>>> To: "Fltechdiver" <fltechdiver@mikey.net>
>>>>>>> Subject: TriMix Computer Vote RESULTS
>>>>>>> 
>>>>>>> ALL -
>>>>>>> 
>>>>>>> At this time, it appears anyone who was going to vote did so.  As a
>>>>>>> result,
>>>>>>> I have decided to release the results of the first DeeperStuff
> Technical
>>>>>>> Dive Debate.
>>>>>>> 
>>>>>>> Question:
>>>>>>> Would you use a wrist-mounted TriMix computer?
>>>>>>> 
>>>>>>> RESULTS:
>>>>>>> 
>>>>>>> NO     4
>>>>>>> YES    21
>>>>>>> 
>>>>>>> YES BY A LANDSLIDE !!!
>>>>>>> 
>>>>>>> 
>>>>>>> Z's Analysis:
>>>>>>> To some, it might appear that voter turnout was low. I believe this
> was
>>>>>>> due
>>>>>>> to a small population of trimix rated divers to begin with.  Since
>>>>>>> FLTechDiver is monitored by hundreds' I suspect many were afraid to
> vote
>>>>>>> due
>>>>>>> to their lack of experience in this area.  Although I will not
> divulge
>>>>>>> the
>>>>>>> names of those who voted, many are well respected "mix" divers, and
> at
>>>>>>> least
>>>>>>> a couple  admitted currently owning a "mix" computer.
>>>>>>> 
>>>>>>> I will admit the landslide surprised me.  I figured we were in for a
> much
>>>>>>> closer tally.  This also confirms what I have always believed, that
> many
>>>>>>> monitor these lists without voicing their opinion which is in direct
>>>>>>> contradiction to a few VERY vocal participants.
>>>>>>> 
>>>>>>> Someone asked me how I was going to vote.  For the record, I said
> "YES"
>>>>>>> (if
>>>>>>> I could find a mix computer I liked that is)!
>>>>>>> 
>>>>>>> Z
>>>>>>> www.deeperstuff.com
>>>>>>> 
>>>>>>> 
>>>>>>> ============================================================
>>>>>>> To contact the list administrator, email
>>>>>>> Mike Rodriguez at mikey@mi*.ne*
>>>>>>> To UNSUBSCRIBE from this list, send a message to:
>>>>>>> listserv@mi*.ne*
>>>>>>> and in the *BODY* of the message type:
>>>>>>> unsubscribe FLTechDiver
>>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> --
>>>>>> Send mail for the `techdiver' mailing list to
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>>>>> 
>>>>> 
>>>> 
>>>> 
>>>> --
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>>> `techdiver-request@aquanaut.com'.
>>> 
>>> 
>> 
>> 
> 
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