Question Dry suit rebreather divers, how much lead?

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The thing is that people use a wide array of tanks on these units. Aluminum, Steel, 50cf, 13cf, etc. My CCR ready to dive (no lead) is 45lbs. A JJ with two LP50s is over 100lbs.

These considerations that you might want to ponder as you pick a unit.
I get that. My friend uses al80s for bailout
 
With a normal JJ in the sea I use between 2 and 7kg depending on the undersuit. A JJ with 3l steels weights about 38kg, slightly less than twin 12s. That is already quit a heavy thing. Using 7s or 8.5s instead makes it excessively heavy, at least for normal sized people, in my opinion.

You need to have a think about whether the bailout counts. Might you hand it off? Will it be positive when empty?
 
3lb in 72F fresh water. Can probably go down to 2lbs as skills improve. Setup:

rEvo mini, titanium frame, 3L cylinders
Crushed neoprene Bare, custom fit - tight with little room for air
Mid-grade undergarments
72cf al bailout
Turtle fins - will be replaced w Deep Eddy's
 
Hi there, Santi dry suit, Kwark extreme undergarment, heat shirt, on T-REB sidemount eCCR with 1x80 cuft aluminium and 1x85 LP light steel, 3l steel diluent off-board and 1.5 l tank for suit inflation. Using 5 lbs weight.
 
Not being a sidemount reb user, but my 5 cents. Backmount KISS unit with 2l steel tanks, trilam drysuit, heating vest+ Subgear 490 undergarment (Large), rubber fins, lights, heater battery canister, and so on stuff. Dived mostly in cold waters (+4 - +8 deg.C)
for an hour typically. 6 kg of lead in reb case, 7 kg weight belt. Overall 13kg (sightly less than 30 lbs of lead).
BO not included (S80/7l steel/4l steel - according to dive site).
 
Meg (Tiburon)

Warm Salt Water (or minimal weight for beach diving, etc.)

Includes:
2L steel cylinders (charged)
Aluminum backplate
5 lbs of lead on upper backplate (for diving w/ a 5mm wetsuit)
Cave can w/5.5 lbs scrubber (full)
Small stainless steel stand (2-3 lbs)
Nerd, transmitters, BOV

Total: 73 lbs

Cold Salt Water

Includes:
3L steel cylinders (charged)
Stainless steel backplate
3 lbs of lead on upper backplate + 18 lb homemade lead v-weight (for diving trilam w/Arctic ug’s + Santi heated vest)
Cave can w/5.5 lbs scrubber (full)
Small stainless steel stand (2-3 lbs)
Nerd, transmitters, BOV
UWLD 160wh batt + light head + heat controller
AL6 inflation bottle + reg

Total: 110 lbs

(I remove 8 lbs from this for fresh water)
(I do not add or subtract lead when adding or reducing aluminum bailouts)
 
Not a Meg, but the JJ-CCR in all steel plate/cyls, plus custom shrink wrapped lead cylinder weights in the handle tubes, is basically neutral for cold drysuit diving at a land carry weight of ~40kg / 90 lbs
 

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