Quote:
| Originally Posted by Andy Kerslake The only real problem with the rich right mantra is if as a human being you cock up, unfortunately we all make mistakes and you could easily attach the wrong bottle to the wrong side. With only one it does not really matter, add more and it becomes more of a problem, start using three or more and it begins to fall apart a lot.
More importantly whichever side you use its the positive identification each time you switch to the stage that is far more important, and absolutely not to rely on which side the stage is on (if this applies). |
A few good arguments on this thread but this is definatly not one of them.
I only know three divers who have 02 toxed switching to the wrong gas and the ALL had both stages left.
The likleyhood of geting the wrong stage on the wrong side using left right is miniscule. The gag on the rich reg and the fact its gassed off might be a clue as well.
I always thaught the stages left were to free up the right hand as the majority of divers / people are right handed. The stages left gives the prop wash of some scooter designs a clear passage making them more eficient and the all stages left principle does away with the confusion caused by adding a third stage. (this last point is a very good one)
The main reasions I avoid are tank identification in diver seporation events (but id cure that with a rich reg gag) and much more importantly the fact the depths and run times I do make the tanks so full that having even ali 80s all left would put me off balance.
Diveing left right with steel tanks i can (and have in the past) run 250bar fills in 10s to facilitate the deco comitment. Alis wouldent like that and would tip you over sideways with a 250bar fill.
I can get away with two deco stages down to 70m dives so left right covers 90% of my diving. Deeper I need 3 so it all goes a bit wrong. Such limitations on the left right idea meen its not a good as a standardised system.
I have to admit therefore that if i were trying to standardise a system id have to opt for all stages on one side or the other.
ATB
Mark Chase