JJ vs Cmoptima vs Xccr(fx)

[AJ]

yeah I was looking at the GUE way, dunno if its the best way to rig everything!

As far as I'am concerned it's not the best rig for anything, but thats my opnion. It's heavy, complex and does not have real benefits imo.

 

[Dsix36]

yeah I was looking at the GUE way, dunno if its the best way to rig everything!

IMHO it is only good if you are already a die hard GUE trained diver and do not want to change things since it still follows their basic OW principals.

 

[Rayk]

yeah I was looking at the GUE way, dunno if its the best way to rig everything!

JJ with sidemounted bailouts works like a charm. Plus you can have your off board O2 plugged within 10 seconds without doing acrobatics underwater.

 

[justinthedeeps]

Seems like most recommend a standard backmount CCR for general purpose diving

Outside of the military context it seems like the chest rebreathers are about a) travel divers looking for something more lite, b) twinset divers who want to add on a CCR but keep twinsetting, c) a bailout rebreather d) [other reasons?]

Many have mentioned the positive loop pressure from having counterlungs below actual lungs as either a feature or a flaw (depending on how many kpa it is?)

I heard the O2ptima CM was designed such that the counterlungs could be closer to the mouth/DSV, alleviating some of the positive loop pressure and possibly supporting more orientations (?)

 

[inquis]

d) [other reasons?]

Lower vertical profile than back-mounted, especially when pushed forward

Supposed better WOB than most true side mount units (no experience on my part)

 

[flymolo]

CE ratings for scrubber duration are pretty useless outside of like, this thing either works or it doesn't. the number of hours is far less than what you can actually expect

 

[flymolo]

yeah I was looking at the GUE way, dunno if its the best way to rig everything!

gue style rig works great for boat diving and a lot of cave diving as well. The only issue with the configuration is the weight on land, however that problem is easily solved with regular visits to the gym.

 

[Fat old english bloke]

d) [other reasons?]

Partially a weight consideration, so a little of (a), but the portability and flexibility.

I’ve used mine in lieu of lots of OC tins, and then been able to clip it off and proceed OC or on ‘foot’.

It’s also nice being able to leave the CCR behind and still have a (smaller) dive in the event of a malfunction.

 

[justinthedeeps]

gue style rig works great for boat diving and a lot of cave diving as well. The only issue with the configuration is the weight on land, however that problem is easily solved with regular visits to the gym.

Rigging ample enough onboard dilout to forgo one stage cylinder sounds tidy. Perfect for crowded boats with hydraulic lifts, and/or people with a reasonable 200+kg squat/deadlift and near invulnerable hips and spinal discs (not me, unfortunately)

One less stage carried sounds probably better in cave too (?)

 

[justinthedeeps]

Thought expt: If you were joining a dive trip that is primarily an open circuit liveaboard or liveashore deal with ~24 non-deco (or mini-deco; runtimes ~60min) dives in a week, but you prefer to CCR--which rebreather (real, or hypothetical) would you bring?