HDTenEightyP/NetNews huggingface dataset:
From: duis@sgi.com (David Duis)
Subject: Re: Regulator hose sizes
Organization: Silicon Graphics, Inc.
Date: Tue, 14 Apr 92 18:20:58 GMT

In article <14APR92.03062706@skerth.usask.ca> e45evancio@skerth.usask.ca writes:
> I've been sizing up the Dacor Quantum reg set, and others, and I
>noticed that Dacor uses half-inch hoses on its second stage and its
>octopus.  Does this larger diameter make a real difference from the
>standard three-eighths-inch size?

US Divers and Dacor have been selling regulators with 1/2" hoses for
years now.  Funny thing about the US Divers regulator (I'm talking
about the SE2 in particular) is that the second stage inlet port is
the same size on the 3/8" and the 1/2" models....  Kinda like having a
storm pipe with a regular faucet at the end.  

How much difference can it make to dynamic flow performance that the
pipe is made bigger if the limiting nozzle is the same size?

The only advantage I can see (and in fact the ONLY difference between
the SE2 and the Conshelf 21) is the amount of intermediate pressure
reservoir, some (more) of which now resides in the second stage hose.

IMHO, it's a marketing gimmick, unless the Quantum or Micra second
stage is explicitly redesigned to accomodate the larger bore ALL THE
WAY through the second stage mechanism.

Have the 3/8" hose regulator tuned up, and I bet you won't be able to
tell it from the 1/2" hose regulator.  I know *I* can't tell a
factory-new SE2 from a Conshelf 21....


Cheers,

Dave Duis@bent.wpd.sgi.com           NAUI AI Z9588, PADI DM 43922, EMT
    Spearfishing on SCUBA is like hunting bears from a helicopter.
Newsgroups: rec.scuba
From: mjohnson@sirius.acs.calpoly.edu (Mark S. Johnson)
Subject: Re: eyeglasses or contacts (it's in the FAQ, ya know)
Organization: Mechanical Engrg. Dept., California Poly. State U., SLO
Distribution: usa
Date: Mon, 6 Apr 1992 16:21:54 GMT


The rec.scuba FAQ addresses this in a very thoughtful manner....

My two cents, anyway.....

I wear gas permeable "rigid" lenses. I'm careful not to flood my mask.
I've never experienced a rapid, uncontrolled mask flood during a
pleasure dive, just slow leaks that I can purge before they reach eye
level. In the case a fast leak, I think I will still be able squeeze
my eyes shut before water touches them. I think most long-time contact
lens wearers will tell you they have some "sixth sense" about
protecting their eyes and lenses.

If I were new to contacts, I'm sure I wouldn't be so cocky about
wearing them while diving.

If a diver is new to BOTH diving AND contact lenses, I might be a bit
concerned about the extra anxiety that combination might cause.
Net.instructors care to comment on this one?

I do not wear my lenses on training dives where mask flooding is
involved.

I may switch over to disposables WHEN they correct for astigmatism (my
doc sez its on the drawing board); then the financial pain of
losing a lens will be small.

Safe Diving,
Mark
-- 
Mark S. Johnson        mjohnson@stn9.me.calpoly.edu      (129.65.19.9)
Newsgroups: rec.scuba
From: leej@sgi.com (Lee Jones)
Subject: Re: Scuba Lessons in Peekskill, NY
Organization: Silicon Graphics, Inc.
Date: Wed, 15 Apr 1992 00:49:05 GMT

> I have the oportunity to mate on a boat starting this summer

I have never been a mate on a boat (I'm allergic to hard work :-).  However,
I think the people that do this *do* get to see a fair amount, and you
will learn a ton of stuff.  It really doesn't require all that much to get
your divemaster certification (from *any* of the agencies), but boy I'd
be impressed if you showed me your DM card and then backed that up
with a logbook that explained how you'd spent five days a week crewing a 
dive boat for a summer.  

And, I would think you'd get enough time u/w that you'd get some once-in-
a-lifetime kinds of experiences.  I've given some thought to being a 
divemaster somewhere for about a year for the same reason.  My allergy
to hard work notwithstanding, I figure it's my best chance at (e.g.)
having a whale shark swim under me.  OK - I can give Carl Roessler my
paychecks for the next 17 years and accomplish the same thing.... :-)

Word of advice: Don't DARE do it unless you're carrying liability insurance
from a certification organization.  It will probably cost you big $$$$
(like $300-$400 per year), but is well worth it.  You might even get the 
captain to pay for it because he'd be crazy to let you on without it.

Personal Opinion: NC Wreck diving can be pretty hairy weather wise, but
offers some very unique diving.  If your stomach is up to it, you will
get a lifetime's worth of diving memories during your summer.

Good luck and kiss a sand tiger shark for me.

Regards, Lee Jones. NAUI #11702
Newsgroups: rec.scuba
From: njs@scifi.uucp (Nicholas J. Simicich)
Subject: Re: Scuba Lessons in Peekskill, NY
Followup-To: poster
Organization: Nick Simicich, Peekskill, NY
Date: Wed, 15 Apr 1992 18:52:20 GMT

The original posting was made with NY distribution and was cross
posted to ny.general, which explains why lots of folks didn't see it.
I apologize for the leak, but didn't think that there was much at
issue, since I expected it to stay in the NY area.  If you could find
the original article and send me the path, (and you are not in NY),
I'll attempt to plug the leak by contacting the appropriate sysadmins,
which may (at this point) be me.  I've set follow-up to poster because
I expect email responses to this.

I don't expect that postings to local distributions should be an issue
in this regard, especially in geographic regions where few
instructors are on the net.  As an example, this might well be
different for folks in ca or ba than it is in ny. 

-- 
Nick Simicich - uunet!bywater!scifi!njs - njs@watson.ibm.com
SSI #AOWI 3958, HSA 318, NAUI #14065
Join the movement ---  turn 'to bush' into a verb.
Newsgroups: rec.scuba
From: duis@sgi.com (David Duis)
Subject: Re: Scuba Lessons in Peekskill, NY
Organization: Silicon Graphics, Inc.
Date: Wed, 15 Apr 92 00:51:41 GMT

In article <1992Apr14.203805.13257@unx.sas.com> sastpw@scuba.unx.sas.com (Tom Weber) writes:
>[...]
>here goes. I have the oportunity to mate on a boat starting this summer
>(in a couple of weeks).          

Hell, why are you asking us?  If your partner's willing, a boat can be
a fine setting for mating.

>I have my PADI advanced open water, and will
>become a dive master if I decide to do this. 

I've never heard of sexual favors being required for DM certification,
but hey, it was inevitable, right?

;-)

As for your real question, what have you got to lose?  It's not as if
you will not be able to stop, right?  So if the issues you're aware of
(training, time, boredom, labor) seem reasonable, go for it.  

Once you're an instructor, though, it's hard to go back.  You must
carry insurance for some years after you stop instructing -- all
instructor insurance is a "claims-made" basis, versus what I call a
"accident-happened" basis.  Briefly, the insurance has to be in effect
when the suit is filed, not when the training and/or accident occurred.  

Cheers,

Dave Duis                        NAUI AI Z9588, PADI DM 43922, EMT
duis@bent.esd.sgi.com             Better diving through tolerance.
Newsgroups: rec.scuba
From: duis@sgi.com (David Duis)
Subject: Re: lightning and diving
Organization: Silicon Graphics, Inc.
Date: Tue, 14 Apr 92 18:01:56 GMT

In article <3q8txkr@rpi.edu> rodney@magritte.ipl.rpi.edu (Rodney Peck II) writes:
>In article <CARL.92Apr1203453@atlantis.Cayman.COM> carl@Cayman.COM (Carl Heinzl) writes:
>>
>>>The surface is the problem.  If you're on it, that aluminum, or worse
>>>yet, steel cylinder on your back makes an absolutely wonderful
>>>lightning rod.  

[....]

>This isn't directed at any particular person except maybe someone who's now
>planning to take a trip to a storm to go diving since it's cool and "safe".
>
>That said, it does sound like a great experience if you manage to survive.
>Rodney

This sounds like a job for a non-metallic O2 rebreather.  Any takers?
I can get one for about $7K....  $4K if you don't need non-metallic
---if you aren't planning on using it for a lightning diving specialty.  :)

Cheers,

Dave Duis                        NAUI AI Z9588, PADI DM 43922, EMT
duis@bent.esd.sgi.com		   Oxygen is a drug in California.

From: davew@hp-ptp.ptp.hp.com (Dave Waller)
Date: Fri, 3 Apr 1992 18:55:49 GMT
Subject: Re: Mail Order
Organization: HP Pacific Technology Park - Sunnyvale, Ca.
From: F_CNNGHAMJK@CCSVAX.SFASU.EDU (KELLY CUNNINGHAM (AKA RANDOM DEVIATE))
Newsgroups: rec.scuba
Subject: where are Manta rays (not sting rays)
Date: 11 Apr 92 16:41:27 GMT


I'm told that Manta rays (not sting rays) are routinely seen at the Flower
Gardens (Gulf of Mexico).  Whale sharks were seen last September.

I'll check it out sometime this summer.

Randomly,         ____
Kelly Cunningham (_/\_)
From: njs@scifi.uucp (Nicholas J. Simicich)
Newsgroups: rec.scuba
Subject: Re: Gone to Carolina in my Mind
Date: 12 Apr 92 23:06:05 GMT
Distribution: na
Organization: Nick Simicich, Peekskill, NY

Gosh.  In rereading my message, I realized that I should have included
my phone number.  800-488-9163 rings in my home, and you can talk to
either Deb or me.  Or, if that doesn't work, you can call me at
914-737-1908. 

-- 
Nick Simicich - uunet!bywater!scifi!njs - njs@watson.ibm.com
SSI #AOWI 3958, HSA 318, NAUI #14065
Join the movement ---  turn 'to bush' into a verb.
From: kurtk@vice.ICO.TEK.COM (Kurt Krueger)
Newsgroups: rec.scuba
Subject: Re: Octopus Ergonomics
Date: 13 Apr 92 15:46:06 GMT
Distribution: usa
Organization: Tektronix, Inc., Beaverton,  OR.

In article <1992Apr8.200654.6566@icon.com> malc@icon.com (Malcolm Weir) writes:

> Under the NASDS sharing air system, you do NOT want to give up your
> primary, so the Buddy-out-of-Air (BOA) must be receive the Assisting
> Buddy's (AB's) safe second.  The AB also wants to make sure that the
> stress on the BOA is minimized, so the AB wants the safe 2nd to be
> rigged so that when the buddy team are face-to-face, the BOA can just
> grab the reg. and start breathing.

But a wise old instructor of mine told me:  If your buddy is out of air and
he's panicky, he's going to go for the the regulator he sees bubbling air.
That's the one in your mouth!  The object was to have a 2nd that YOU can
use, since there's a pretty good change that your buddy's going to get
yours.  It would probably be less stressful if you just let him take it.
From: vader@cst.prl.philips.nl (Rob Vader)
Newsgroups: rec.scuba
Subject: Looking for Richard Shahley
Date: 15 Apr 92 12:23:04 GMT


Hi,

I am trying to get in contact with Richard Chahley.
This person posted to this newsgroup during 1989 a number
of mails regarding 

A TEN YEAR SUMMARY OF SPORT DIVING FATALITIES ON ONTARIO (1979 - 1988)

Through a search in the archive at: bywater!scifi!scubasearch@uunet.uu.net.
I received parts of this report.
I thought the information was very useful to me (I am an instructor, well...
I hope to be seen as such), however I did not receive all parts.

Sending mail to Richard on the e-mail address in the heading of
the articles was not possible; rich@ngpt.UUCP was not reachable.

Now I am looking for his new e-mail address, so if anyone (or perhaps
Richard if he is still reading this newsgroup) can help me, please
let me know.

Another possibility is the sending of the missing parts.
It seems that I miss parts 21-26 and 33-39 of the 39 parts that were
sent.


Hope to hear from someone very soon,


Rob Vader
PADI OWI 35388

Philips Research Laboratories
Information and Software Technology
Eindhoven, The Netherlands

phone: +31 40 74 25 75
fax:   +31 40 74 40 04
UUCP:  vader@prl.philips.nl

--
R. (Rob) Vader
Philips Research Laboratories
Information and Software Technology
Building WAY 1.27
From: ken@pluto.dss.com (Ken Adler)
Newsgroups: rec.scuba
Subject: Info Request:  Seychelles Islands
Keywords: diving, seychelles,
Date: 6 Apr 92 15:35:33 GMT
Organization: Datability, Carlstadt, NJ


I am thinking of going to the Seychelles on my Honeymoon (June 1-15).

Would like to hear any reports about diving there.

I would especially like to hear about any experience with live-aboard
diving (3 days or so).

I am a pretty good diver and have "done" the GBR and Caymen Islands.  My
wife-to-be is just taking classes now and would get certified on the trip.

Would appreciate any feedback asap

E-mail replies would be appreciated.

thanks

Ken
From: e45evancio@skerth.usask.ca
Newsgroups: rec.scuba
Subject: Regulator hose sizes
Date: 14 Apr 92 03:06:27 GMT
Organization: University of Saskatchewan


     I've been sizing up the Dacor Quantum reg set, and others, and I noticed that Dacor uses half-inch hoses on its second stage and its octopus.  Does this larger diameter make a real difference from the standard three-eighths-inch size?

     While I'm on the subject, if anyone has actually BOUGHT one of the new Dacor reg sets and used it, let me know how it performs.

     Thanks in advance.

Greg "Float-like-a-brick" Evancio
Newsgroups: rec.scuba
From: dsb@gtx.ummed.edu (Douglas S. Bowman)
Subject: Info on IDEA Certification
Organization: University of Massachusetts Medical Center
Distribution: usa
Date: Thu, 16 Apr 92 18:44:26 GMT

I recently got certified by IDEA (International Diving
Educators Association) and haven't seen much info on
the organization.  Is this a national recognized Ccard
or am I going to have problems renting equip. or
getting fills ????

Doug (dsb@vision.ummed.edu)
.

Newsgroups: rec.scuba
From: craig@cattnts.canada.ncr.com (Craig Campbell)
Subject: Re: Power Inflator Second Stages
Organization: AT&T / NCR Canada Ltd., Toronto, Canada
Date: Thu, 16 Apr 1992 14:16:15 GMT

In article <920415024049_73467.2574_DHE37-1@CompuServe.COM> 73467.2574@CompuServe.COM (Andy Schmidt) writes:
>On Tue, 14 Apr 1992 14:05:15 GMT craig@cattnts (Craig Campbell)
>writes in his Message-Id: <1992Apr14.140515.6921@cattnts>

>If you use the Scubapro AIR/II with a Scubapro BC you'll 
>pull the cord and open the BC dump valve on your shoulder.  

Is this a separate cord, or a cord internal to the inflator hose?  If it is
internal (like the ones I'm used to), I would expect that I would still have to
remove the reg from my mount to pull down far enough to dump.

>Andy


-- 
Craig Campbell		|	These opinions are entirely the result of a 
Systems Engineer	|	small butterfly crashing into the far side
NCR Canada,		|	of the planet.  Chaos Rules.
an AT&T Company		|	I speak for no one, except, possibly, myself.
From: craig@cattnts.canada.ncr.com (Craig Campbell)
Subject: Re: Dive computers
Organization: AT&T / NCR Canada Ltd., Toronto, Canada
Date: Thu, 16 Apr 1992 14:13:31 GMT

Dana Johnston writes:

>"I was trying to decide on the best type of dive computer to purchase........
>suggestions ... comments ... appreciated ... free beer (oops, sorry about that)

As with any good question, the correct answer is, it depends.

Basically, you need to give a description of the type of diving you currently
do, and the type of diving you would like to do.  Then decide which computer
gives you the bets trade off $$$ vs features vs safety.

I use a Monitor II, which is the same as the Aladin Pro, and a few others.


-- 
Craig Campbell		|	These opinions are entirely the result of a 
Systems Engineer	|	small butterfly crashing into the far side
NCR Canada,		|	of the planet.  Chaos Rules.
an AT&T Company		|	I speak for no one, except, possibly, myself.
Newsgroups: rec.scuba
From: njs@scifi.uucp (Nicholas J. Simicich)
Subject: Re: C-card #'s in .sig's
Organization: Nick Simicich, Peekskill, NY
Date: Tue, 7 Apr 1992 04:02:21 GMT

In article <1992Apr6.105315.9495@maspar.ch> root@maspar.ch (Bruno Pape) writes:

>Really, you mean if I put "NAUI #746085" in my sig you might confuse
>me with someone that really knows something?  No, not me.  :-)  

NAUI Instructor numbers are five digit numbers, and assigned
consecutively.  I'm a recent crossover.  Numbers with six digits in
them must be non-instructors.

-- 
Nick Simicich - uunet!bywater!scifi!njs - njs@watson.ibm.com
SSI #AOWI 3958, HSA 318, NAUI #14065
Join the movement ---  turn 'to bush' into a verb.
From: davew@hp-ptp.ptp.hp.com (Dave Waller)
Date: Mon, 13 Apr 1992 17:11:15 GMT
Subject: Re: Tanks and GA aircraft
Organization: HP Pacific Technology Park - Sunnyvale, Ca.
Newsgroups: rec.scuba

craig@cattnts (Craig Campbell) writes:
> 
> Minor nit, but isn't a tank hydro'd at 5/3 's (66% above) of its
> working pressure?

Yup.

Dave Waller
YMCA Instructor
Newsgroups: rec.scuba

Okay Nick, you probably knew this was coming from me :-)

This post is, without exception, a pure and simple advertisement for
your services as an instructor. There is nothing inherently bad about
advertising, however it was my understanding that this type of
advertising was taboo on rec.scuba lest the newsgroup get buried in the
noise of instructor advertisements.

As an instructor I'd like very much to make a similar advertisement. I
too am looking for students. And, as Nick, I believe that I offer an
exceptional program, as well as having the freedom of being an
independent instructor like Nick.

However, there is substantial competition from other instructors in my
area here, many of them participating in this forum. If I make such a
posting, will many of them be motivated to as well? And then, how far
does the discussion go?

At this point I will refrain from making such an appeal, and ask that
rec.scuba readers post their thoughts on this. We need to discuss this
issue and come to a consensus. I personally would prefer that rec.scuba
remain a high information content forum, but in this dog eat dog world,
I'm as interested as the next person in using what tools are available
to fill my class roster.

Dave Waller
YMCA Instructor
From: fssmith@venus.lerc.nasa.gov (Greg Smith)
Newsgroups: rec.scuba
Subject: Re: Mail Order
Date: 6 Apr 92 18:52:00 GMT
Article-I.D.: venus.6APR199214525259
Organization: NASA Lewis Research Center
News-Software: VAX/VMS VNEWS 1.41

In article <930447@hp-ptp.ptp.hp.com>, davew@hp-ptp.ptp.hp.com (Dave Waller) writes...
>joseph@smosjc.UUCP (Joseph Crunk) writes:
>> 
> 
>> 4) Right now, retail SCUBA stores are averaging 85-100% mark-up on
                                                   ^^^^^^
>> the stuff they sale. Regutators allow for an incredible profit-margin
>> while BC's don't have as high a mark-up. As a rule of thumb, sports
>> equipment and musical instruments have very have mark-ups.
>> 
> 
>I'm of the latter frame of mind...  I'd rather spend 10-15% more money
                                                      ^^^^^^
>and not have to hassle with mailing stuff back and forth, with the
>shipping costs, concomitant delays, and minimal customer service you
>get from a mail order house.  In my years of diving I have had
>situations, on occasion, where the prompt, face to face service I get
>from a dive store was critical due to an impending trip, and mail
>order would not have been able to take care of me.
> 
>Just one example among many are the 4 Delphis I went through two years
>ago.  Due to the high rate of failure of this unit, I had to take it
>back 3 times before I got one that was reliable.  Of course, the shop
>exchanged it on the spot for a new one, no questions asked.  In my
>view, the money, headache, and time involved in having to do this with
>a mail order company would have far exceeded the value of a 25%
                                                             ^^^
>savings, if I had had been able to get such a savings from a mail
>order place, which is unlikely.
> 
>BOTTOM LINE:  You get what you pay for.  Pay less, and you get less.
>For some, this is no problem, because they place little value on the
>services and convenience that a dive store offers, and there is
>nothing wrong with this.  For others like myself, these services are
>of considerable value, worth more than the cash saved by the discount,
>and therefore I view myself as getting a BETTER deal from the dive
>store, price differences counted into the comparison.
> 
>Dave Waller
>YMCA Instructor

Dave perhaps the stores you frequent are better than most.  I have found
th mail order savings on name brand identical equipment to be up to 50
percent.  It makes a huge difference.  I buy stuff from local dive shops
if their prices are in line.  I would gladly pay a little more for better
service, to support the local economy, dive shop etc. But I will not
pay twice as much.
From: chuck@eng.umd.edu (Chuck Harris - WA3UQV)
Newsgroups: rec.scuba
Subject: Re: Tanks and GA aircraft
Date: 10 Apr 92 18:22:25 GMT
Organization: University of Maryland, Department of Electrical Engineering

In article <1992Apr6.120556.22605@axion.bt.co.uk> pyoung@zaphod.axion.bt.co.uk writes:
>From article <11222@mindlink.bc.ca>, by Charlie_Gibbs@mindlink.bc.ca (Charlie Gibbs):
>
>>      There's no problem at all.  Think of it in terms of relative
>> pressure.  Even at 10,000 feet the ambient pressure has only gone
>> down by about 5 psi.  A tank that's filled to 3000 psi won't even
>> notice the difference.
>
>I'm surprised to hear this. I thought there were regulations about flying
>with diving cylinders because technically they are pressure vessels.
>Perhaps this is only a concern when you are flying in a jet at 35,000+ feet?

Come on now guys!  There are two kinds of pressure measurements that relate
to the gas pressure in your tanks PSIG (Pounds per Square Inch GAUGE) and
PSIA (Pounds per Square Inch Absolute).  PSIG is the difference in pressure
between the inside of the tank, and the outside of the tank.  PSIA is the
difference between the pressure inside the tank and in a vacuum.

At sea level, the difference between PSIA and PSIG is 1 atmosphere or 14.7 lbs.

What this means is that your 3000PSI tank would measure 3000PSIG at sea level,
and 3014.7PSIG on the moon.  It would measure 3014.7PSIA everywhere.

The only reason for any restrictions on pressure vessels in aircraft is the
risk of the vessel bursting due to physical abuse (read crashing).  That is
why you are supposed to open the valves and empty the tanks before transporting
them on commercial flights.

As to the law, I leave that to the closet lawyers.  I do not believe that the
restrictions are any different than for land travel.


Chuck Harris - YMCA "C" card #<insert my ssn here>
chuck@eng.umd.edu