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Date: Tue, 15 Aug 2000 06:52:59 +0100
From: Øystein Mehus <omehus@hi*.no*>
Organization: Hitec O
To: Olle Welander <Olle.Welander@hi*.se*>
Cc: "'TechDiver@aquanaut.com'" <TechDiver@aquanaut.com>
Subject: Re: Advice on Halcyon bladder size?
Olle Welander wrote:
> 
> In sweden we have steel doubles in 2*10, 2*12, 2*15, 2*18 litres. I am
> thinking of 2*12 or 2*15. What i want to know is what is the maximum set of
> doubles and stages you could take on a 45, 55 and 65 lb halcyon bladder??
> What's the maximum doubles set for a bladder if you don't wear any stages at
> all?
> I have a Halcyon SS backplate and still a Poseidon neopren drysuit, which I
> can't afford to replace right now.
> 
Hi Olle, I'm in Norway myself, try to DIR and dive 2x12.5
232bar. If you can get the 232bar tanks in Sweden, go for a
pair of those as they have much better buoyancy
characteristics than the 200bar.

I don't know what kind of diving you do, but 2x12(.5) should
get you a long way. I have recently used those and two 7l
stages on a 100m dive/10min without violating the rule of
thirds. I use this set for everything from shallow nitrox
dives, to deep trimix. If I need more gas, I add a stage.

Personally I find the 65lb Halcyon to be fine. Diving in open
water, high waves with stages, canister light etc, I like to
be floated a little higher in the water than what the 55lb
will do. A friend of mine dives 2x12 and a 45lb Halcyon, he
claims it's pretty inflated at bottom (85m), even with
alu-stages, but still it's no big deal.

To recap, a 65, I think, would be preferred by most peaople
diving in rough seas, 55 should also be OK by most people and
even the 45 should be OK in calm seas, or cave. 
-- 
Oystein
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