its as comfortable a load out as you want.Of course it works, its got a scrubber some cells 02 and dill??? What else do you need?
The point is is it as comfortable as diving 3s on your back? No
Is having the valves on the top easier to reach than by your hips? No
Is there any advantage of having the dill on your back as the same gas as being your bailout? No
Is there an advantage with off board 02? No
Has the addition of a manifold and H valves introduced failure points which we were all told by GUE were a bad thing? Yes
The JJ is a very well thought out bit of kit. You can unplug the 02 add and run PSCR through it, you can add a dill valve and unplug that an run off board emergency dill via your bailouts. You dont need 14ltrs of dill on your back
On a purely practical side. On multi day multiple depth trips Id take four or five 3ltr dill bottles some with say 21/35 some with 18/45 and some with 10/70
Then id take three X 3ltr 02 bottles.
SO if we got blown on the audascious and ended up on the Laurentic, id just switch to my 21/35 dill and go diveing
Arguably you could just load up three tanks of 10/70 and say sod it ill just dive lean mix no matter what the depth. Its one of the big advantages of a CCR after all.
With the silly GUE rig you cant do that unless you have multiple sets of 7ltr tanks with H valves on and are happy to strip the manifold to swap tanks.
Which ever way you look at it the GUE JJ rig is a bit daft. I know I have dived it. In fact I think that pic above was taken BEFORE GUE announced their version of the manifolded 7s rig? At the time I joked they'd copied me
I persevered with it for a while but the fact is, it just isn't nice to dive. Note the black 2.5kg bar of lead I had to cable tie across the bottom of it because the valves made it top heavy as well
If you want to dive that way, great knock yourself out. Its a free country
But PLEASE dont start saying its a better way to dive a JJ, because thats just laughable.
I have owned many CCR in the last 14years of diveing them. ALL of them were heavily modified except the JJ. My JJ was one of the very first batch of four sold into the UK (when was that? 2012 I think?) and yet the only change I have made to it is to swap the BOF over to a Golum Shrimp and after about 1100 hours use the 02 add packed in and I replaced that with a KISS valve with CMF so I could run it as a MCCR with parachute ECCR. The ECCR had never failed me but I like MCCR and in fact originally ordered my JJ as MCCR but they never went forward with offering that option.
The rest of it just works, and works well in standard configuration.
my buddy was ahead of you on the JJ front, he went to collect his and we dove it in the pool afore you got yours.
but hey. it's an easier loadout than most 50m dives.
got any pictures of your scooter? I loved that union jack photo