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Oren,
The 500 can't be dismantled without tools underwater; the 250 can. On =
a three man dive I checked my back-up reg (a G250) as we were entering the =
cave. It was passing water through the mushroom valve so I just unscrewed =
the front, removed the diaphram, cleared the debris in the valve and =
reassembled the unit. All the time I was doing this I stayed right with =
the other members of the team. It was so simple. I also wouldn't worry =
about performance. What a manufacturer lables as "best" is the result of =
some esoteric test (like "cracking pressure") done on a factory tuned and =
new regulator. Posiedon regs are supposed to be really good at the tests =
but in reality I haven't seen one in the field that was tuned worth a =
damn. If you're diving depth appropriate gasses than performance at depth =
isn't a factor. As George says, "When you're breathing helium, all =
regulators are high performance". If you're diving deep without helium, =
the reg is the least of your concerns.
Chris Elmore
College of Liberal Arts
Univ. of SC
(803) 777-1534 office
(803) 348-3055 mobile
Please use this address for all email: chris@sc*.ed*
>>> "Oren Harpaz" <orh001@un*.ac*.uk*> 03/03 6:25 PM >>>
This is a question to any body on the list that has any experience with =
this matter.
Many people advocate the use of the Scubapro MK20/G250, however according =
to Scubapro the G500 is a better performer than the older G250.=20
I would like to know if any one knows if there is a difference around the =
150m (500ft) range between the two, and which is the better performer.=20
Also due to the fact that Scubapro claim the G500 to be the best second =
stage they have ever manufactured, is there any valid reason to prefer the =
G250 over it.
I also know that many people who use the G250 on moderately deep dives =
have many good things to say about the second stage, but my question =
relates to deeper dives.
I would appreciate all of your comments.
O. Harpaz.
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