Quote:
| Originally Posted by chrisch I think looking at the OP's profile (ScotSAC SD) this progression is going to be something like sensible. Use the current pony rig for the gas switching (I am assuming that ScotSAC, like BSAC does not allow accelerated deco? Someone put me right please)
Move onto accelerated deco later and move onto twins at that time.
By using a pony mixture with a MOD that does not exceed the dive depth at 1.6ATA you can still use it as an emergency redundant gas source. (ie 30m dive: air backgas EAN40 or less in the pony)
Again if you are doing actual decompression dives of more than a minute or two deco, a single 12 is inadequate backgas and a 3L bailout/pony is inadequate safety so the current setup is academic, you will be diving twins.
Chris |
About the most sensible post yet!
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| Originally Posted by Mal Bridgeman Having a closed mind is not the same thing as having a standardised system which has been optimised over many thousands of diving hours which I am sure you are aware. A dogma is different to being able to understand the rationale of a design choice and then testing it in water.
Some students tip up to courses with closed minds and miss out too you know 
Unfortunately, too many people are getting hurt, diving systems/configs/procedures they have designed/developed themselves.
Mal |
People do chop and change and dive all sorts of rigs but if you look at people who have been doing twinset/deco diving for a number of years, the vast majority have invariably set their kit up very similarly in the end, whether DIR or not. There are superficial differences (which most arguments start over) but generally everything ends up similar (if not the same). I remember a lot of people diving quad-rigs in the late 90's... strangely I don't know any who still are.
Having an open mind is great but the sport has been around long enough that what works tends to be how most people end up doing it.
Cheers,
Stuart