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Tony, my Maximus has two fins in it that curve toward the mouth piece
and are advertised as condensate traps/heat sinks useful for dry mouth
relief as well as cold water diving.
I have stated it before, the Maximus does not breath well enough when
you have to put high demand on it. I was told the Blizzard breathed
easier because the adjustment mechanism wasn't there restricting
everything. When I needed the gas, I turned the adjustment so that I
had continuous flow thru the second stage. Guess what? It didn't
make it easier to breath. The restriction, what ever it is was, was
still there and believe me, my lungs were pulling enough vacuum on
that reg that cracking pressure was not a problem!
If you think there is a difference between the Blizzard and Maximus,
you'll be slammed by going to a reg that delivers when you have to
fight a current/wind/waves/flow etc. Say I'm nuts, but I dove the
maximus for 4 years then had the significant emotional event (near
blackout/drowning) that taught me the hard way. Put the Sherwood the
on a deco or argon bottle. How much is you life worth anyway, the
cost of a new reg? Do you really want to die like other people have
on those regs due to CO2 buildup? Ask George.
George, I'm beginning to see your point of view about people and equipment.
I have known that turning down the pressure is a way to reduce the icing,
but the pressure is there for flow/performance. Turn it down and you have
a just lessened the performance. The Odin seems to be the best High
Performance/low temp. reg despite of its other design problems we've
already pointed out. Keep your socks on, it's cold!
--DD
David Drake EDS/SATURN Infrastructure 8-320-4190 on GMnet
Spring Hill, TN USA Internet: saturn.ddrake05@gm*.co*
______________________________ Forward Header __________________________________
Subject: Re: Cold water regs
Author: owner-techdiver (INET.OWNERTE7) at DIAMOND
Date: 3/18/96 11:20 PM
Sean T. Stevenson wrote:
>
> I own a couple of Sherwood Blizzards and have used them extensively
> without freezing problems, but for deep diving (>250') I prefer to use
> my Maximus since it can be tuned to breathe easier at depth. I
> believe (perhaps incorrectly) that both of these regs use the same dry
> first stage, and I wonder if there is any significant difference in
> the design of the Blizzard second that makes it less susceptible to
> freezing than the Maximus?
>
> Comments?
>
> -Sean
>
> --
> Send mail for the `techdiver' mailing list to `techdiver@terra.net'.
> Send subscription/archive requests to `techdiver-request@terra.net'.sean
basically the only differences between the maximus and the current model
blizzard lie in the adjustability mechanism/hose junction and the front
cover. both use the same diaphragm, case and lever support ie internally
they are the same except for one component. this is sherwood part
no.3902-22 described as an exhaust fin but generally referred to as a
heat sink. ican guess what it would do to your warranty but i suspect it
should be possible to install this unit into a maximus (it will
definitely fit - i just don't know how much good it will do). the manuals
show intermediate pressure of the maximus as 120-140psi (I know a lot of
service techs set closer to 150psi) and the blizzard at 120-135 (with the
almost identical oasis 2 at 135-150. i'm told that the lower ip of the
blizzard means less pressure drop at the 2nd stage valve, therefore
theoretically less temperature drop also - you may need to play around
with ip if you decide to experiment
the part needed list for $2.40 in the current sherwood list
if you try it let me know if it makes a difference
regards
tony phillips
--
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