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Although I am not RB diver, I understand one of the main reasons for the small twins on the halcyon is that basically you are diving a DIR set of doubles with a rebreather between them, and an extra hose to drive the thing. I imagine this and the fact that the thing dives most closely with OC reduces the learning curve considerably. At 08:58 AM 6/2/1999 +0100, you wrote: >>>> <excerpt><smaller>H Mike, </smaller> <smaller>We do use the unit for deco. It has 2 gas inlets - 1 is connected to backgas and the other is free for stage/deco bottles. We do all our deco on the unit, but we have to have the capability to go to OC if necessary to complete the deco - that's why we use the larger bottles (our deco regs have 1 SPG, 1 second stage and 1 hose feeding the RB). Ideally, we would rather use smaller bottles but we don't have the range available in the states - so we're somewhat limited in choice. </smaller> <smaller>If you're doing a dive requiring 50% and 100% for deco, then using a single stage for backgas means 3 bottles - not a problem really, but consider the scenario I described yesterday. I would need the following on that reg - 1 long hose, 1 backup hose, 1 wing inflate, 1 drysuit inflate, 1 SPG, 1 hose to reg on mouthpiece block - that's a complete nightmare to route effeciently and under some conditions it may not have enough gas to safely get 2 divers on OC out of the water. Going with twin mounted bottles on the back is an easy solution to this. It also means minimal change in our gear and configuration from OC to RB. Sometimes the simplest way - 1 stage for backgas is not always the best. </smaller> <smaller>Best, John.</smaller> <excerpt> <smaller>See, this makes better sense, only if the unit saves you gas on the bottomgas, why don't you use the unit for deco (with 50 and 100 for deeper dives) I know that the unit gives you better advantages the deeper you go (on gas consumption) but I would think that you would the unit for deco as well? </smaller> <smaller>Why is it standard procedures to carry the twinset on the side of the unit? As G3 has stated so many times (and I agrees with him) carrying stages is not a problem, so why not just have another stage with the bottomgas </smaller></excerpt> </excerpt><<<<<<<< ----------------------------------------------- Kevin Connell <<kevin@nw*.co*> NW Labor Systems, Inc http://www.nwls.com And I suppose you want a user interface with that..... ----------------------------------------------- -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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