Beyond the initial response, the divers can sort out the best solution. This may well be handing over a bottle or fixing whatever the issue was. It would be a bad day in a cave if you were relying on the long hose to get out a long way. It is however a great tool for an instant and safe fix to a cluster fuck.
GUE never just donate a reg off a clipped off stage bottle. Thereís a fixed procedure for identifying & switching gas and it has killed people when it has been ignored in the past. Itís too slow for rapid donation.
You are right about the roots being in the cave environment. The GUE JJ CCR is heavy, but it does work in the sea. A standard 3L dil setup & no long hose in a cave is a totally different approach to GUE. Personal vs team solution. Both are valid.
As for Mark’s comments about logistics, from what I’ve seen the GUE JJ CCR works fine. Just drive it with 15/55 for all wrecks up to 75m. Works fine at 20m if plans change and it’s not like you are going to use much out of 14L.
That doesn’t work on the RB80. You need the right gas for the dive to keep the ppo2 somewhere near optimal.
As for heavier - maybe but itís diveable in its base configuration unlike stock unit which needs a bailout. Add an 80 and lead and the stock is heavier and has no redundancy like the gue config.
I did 5h of bottom time in malin head over 5-days including a day the other boy didnít go out. I only filled once (230b) and still had enough (170b) dil/bailout ((12/80) for an hour bt in channel. I didnít struggle with weight or logistics once or have to rely on drop bottles as part of my bailout strategy.
Coffee is waiting In Bournemouth for anybody interested.
Just to be clear you were only using the "bailout" to get you to an intermediate gas.
You would need 50% + 100% bailouts to do the deco on an hours bottom time
I did an hour on the Audacious and that was only 60-65m and it was about 2.5-3 hours deco.
Even with my SAC on deco of around 10lpm I still needed 10ltrs 18/45 11ltrs 50% and 10ltrs 80% and they were all blown to 275bar
Your back gas in the two 7s would get you to 21m easy, but this assumes a non return to shot necessity or at best a not very far away from shot position and of course no nasty c02.
Unless of course your on teem bailout planning, but I dont take such risks.
The GUE JJ with two 7s on the back + a 3 of 02 WILL be a heavy unit. Not in the water of course but I bet you were glad when they got a lift on Loyal watcher
I sat jaw agape when I heard that GUE come off loop to donate.
Yes yes I get the whole standards thing but it just insane to force the diver with the working unit to come off said working unit on to something which has the risk of not working and in doing so running the risk of rendering your own unit inoperable.
All just to keep a hog loop???
The rest of the world just donate a long hose straight of a side mounted stage but I suppose GUE heads would explode if they were asked to stuff a hose on the rear mounted 7s All those twinset divers with stuffed hoses they slagged for the last 20 years would crash the internet with their indignation
It is a bit heavy out of the water, but my wife can manage it happily, so it's not too heavy.
Yes, we carry deco gases in addition to the back gas, but that's probably only a 7 and a 40. For 100m depth, I add a 3rd deco gas, and below 120 I add a bottom stage too.
I'll add to Graham's offer, that if anyone near Cambridge wants to see it in the flesh and talk through the whole system then I'll also try and make coffee.
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Do GUE JJ's incl an on-board Nespresso, seems to be a bit of a trend.
I don't drink coffee myself, so I don't promise any kind of quality....
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