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Date: Fri, 28 Jul 2000 07:36:30 -0700 (PDT)
From: "Michael J. Black" <mjblackmd@ya*.co*>
Subject: Re: DIR talk vs DIR diving
To: CaptnDale@ao*.co*
Cc: techdiver@aquanaut.com
Hiya CaptnDale,

Good one about the flare wars on the Wisconsin shipwreck!  Wanna
tell us about it?

As for the Dacor Extremes, I change the second stages to their older
model, and have never had a free-flow, under the ice, on a wreck,
below 160ffw, or whatever.  As for Mike Zee and Scubapro regulators,
he prefers you not use them on his boat because they are notorious
for cold-induced free-flows, and my experience agrees with this.
Regarding Sherwood regs, the Blizzard is also a very good cold-water
reg.  And all regulators can free-flow, so it really seems to be
a matter of personal preference and experience.

Later Dale, and don't shoot any flares at me if I tie up to the
Wisconsin one of these days, OK?

MJB

--- CaptnDale@ao*.co* wrote:
> In a message dated 7/26/00 12:24:21 PM Central Daylight Time, 
> mjblackmd@ya*.co* writes:
> 
> << Sherwood Maximus or Brute regulators work well in icy cold water.
>  I prefer the Dacor Extreme.  Scubapro regs (all of them) are more
>  prone to free-flow in icy cold, so much so that Mike Zee in Whitefish
>  Point won't even let you on his boat with one. >>
> 
> I would agree that Sherwood regulators are not prone to freeze up.  The Dacor
> 
> Extreem, on the other hand, is one of the worst designs I have ever seen for 
> cold water.  It is designed to automatically INCREASE INTERMEDIATE PRESSURE 
> WITH DEPTH.  That causes a slight freeflow and often results in a freeze up. 
> 
> As for what Mike Zee allows - I dove with him on his boat last year and used 
> my usual rig which includes two Scubapro MK14's for my primaries and Scubapro
> 
> MK2's for my stages.  BTW, I have never been able to make my Scubapro MK14's 
> freeflow or ice up, nor have I ever seen anyone else freeze one of these 
> regulators.
> 
> Good diving,
> Dale


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