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From: "Guy Wittig" <wittig@bi*.co*>
To: <kirvine@sa*.ne*>
Cc: <techdiver@aquanaut.com>
Subject: Re: Modified DIR-Ocean
Date: Mon, 9 Aug 1999 20:47:33 +1000
George

Just to fuel the flames - would you mount both stages on one side when you
are not using a scooter ?

It seems that you would be better balanced (bouyancy and drag) with
bilateral stages (if it were not for the scooter).

Or does it interfere with the light canister and the long hose ?

Guy


> Steel tanks
>> Let me say right off the bat that while I understand DIR uses aluminum
>> tanks (and a weight belt), that is just not sufficient gas for a
>> swimming deep gas dive with a sufficient reserve. Maybe a 10 or 15
>> minute bounce dive, but our bottom times are routinely 20 to 30
>> minutes at 200 to 350'.  A scooter could change this but most are not
>> scootering.
>> Double steel with aluminum back plate (light) and aluminum stages are
>> needed.
>> With this weight comes the need for redundant lift. (Here comes the
>> flames)
>> Two separate Halcyon or Diverite wings with a wet suit, or only one
>> with a dry suit.
>>
>> Decompression stress
>> In order to provide the maximum safety margin while using high ppo2
>> deco mixes (with breaks of course) and to ease diver exertion on deco
>> a Jon Line is essential.
>> The best option, if available, would be to arrange a free floating
>> deco line before hand. But if this is not available a Jon Line is an
>> efficient tool.
>>
>> Spare Mask
>> Since the ocean has no floor or ceiling like a cave, a spare mask is
>> essential.
>>
>>
>> Flame away fella's!!!
>>
>> Bill
>>
>> PS.  I would be interested in hearing from any other ocean divers who
>> have any suggestions, as there is always room for improvement.
>
>
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