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On 23Jan96 Dan Volker wrote:
> If you went to Tek or DEMA, and checked out each of the rebreather
> systems, you would have no doubt that only one has emerged as a
> "SAFE" unit...this was the RBC Odyssey.
snip
Dan, which TEK or DEMA are you talking about, and how does one "check
out" the Odyssey? We had a bunch of our folks there and the Odyssey
booth at TEK was empty (OK, OK, there was a mini-sub parked where the
RBC Odyssey sign was). At Tek and DEMA all we saw was non-functional
Odyssey shells (we peeked inside) at a couple of booths. At the pool
sessions, we had three PRISM IIs and took in more divers than all the
other guys (Drager, CisLunar, Divex, and the CCR1000) combined. The
Odyssey was not there.
It is important to me why you say the Odyssey is the only one that is
'SAFE'. What is not safe about the others, including our PRISM II?
(One can disregard the CCR1000, it's an older military unit that, I
think, is not around any more.)
FYI, we downloaded the Odyssey pages that you suggested and there are
a number of statements that are incorrect. I don't want to get into
that here unless you insist, but if you want to EMAIL, that's great.
Regards, Mike C
Later, Dan Volker wrote in response to a response:
> You want to try and explain what you are talking about? Even the
> other rebreather companies consider the Odyssey to be among th
> safest and best available.
big snip
Dan, no one asked US if we thought the Odyssey was the safest or best,
and not having studied or dove one, I can't say. IMHO, however, ANY
rebreather without a PPO2 monitor is inherently not "SAFE". How do
you *REALLY* know what you're breathing (blind faith)? Same goes for
a CO2 monitor. How do you *REALLY* know the scrubber is working
*BEFORE* you pass out (CO2 is sneaky)? Furthermore, without a dive
computer, the diver is in the lap-of-the-Gods regarding deco info
because you don't *KNOW* what gas mix you are breathing and it changes
based on a surprising number of variables in many rebreathers. One
can argue about tables and fudge-factors and preset mass-flow
controllers, etc. all day long, but if you don't have an on-line
computer that computes deco info from the actual depth and *ACTUAL GAS
MIX* you are breathing, one has to assume a worst-case scenario.
FYI (based on info we have, maybe not current):
PPO2 CO2 On-line deco
monitor monitor computer
Odyssey no no no
Drager no no no
CCR1000 yes no no
CisLunar yes opt yes
Divex yes opt yes
PRISM II yes yes yes
The type of system the Odyssey has (based on Odyssey info) seems to be
similar to the BMD which was pulled from the market. What is the
difference between these two units?
Dan, I don't mean to start (or contribute to) a flame war. I'm just
asking what I think are some reasonable questions based on this
threads posts and responses. If you would like to take your answers
private, let me know, no problem.
Kind Regards, Mike C
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