Understood, but there was no qualifier to the original question. And without considering volume of gas, OC is always safer, due to less mechanical and mental complication..
actualy down to 6m I'd argue an oxygen mCCR with a kiss valve would be safer
The answer would be reliant on other factors and not solely the unit. Just like any toolbox, there is the correct tool along with tools that would get the job done. Also, there remains the factor of training and expense. Maybe the better question is which is better for a particular diver with X particular goals. And if the CCR is better, it would be time to move up to a full ccr...
actualy, the answer is reliant on physics. less nitrogen = less risk. that risk profile on a weeks diving will run Nitrox OC, RB....... Explorer, Air OC...[/QUOTE]
Yes- here are some ways compared to most CCR, not every point is applicable to ALL "real" ccrs but u get it..
ok, I'll compare to proper CCR training on real CCR's and the thing that is scaring me most about a type R breather
yep to people who aren't ready for the risks associated with a rebreather, real or not
once again, easier isn't better, it's easier. it's easier to buy a gun in the states, doesn't mean it's better, just means more people get shot.
no, you mean more instructor/sales person profit, a second hand inspo if $4500 tops in the UK. that's the same money as an explorer, without instructor cut
Same basics of Rebreather training (not better but the same)
really? mod 1 is the same on an R unit as a real unit? so why the R ticket? and the extra for the Mod 1 ticket? or would you like to retract that BS?
since when is that an advantage unless you're farm animal st8pid and can't understand two gases? or is that the market for the explorer?
Safe upper PO2 (dives like nitrox, no 100% O2)
not really, if I use 40% to 40m I get 2.0 on the dial. safe is only as good as the user, or are you concerned about the calibre of your students?
Automated Checklists (all onboard/digital)
can be bypassed, automation is only as good as the user see next point
Safe Checklist must be passed (diver can not complete predive until ALL checks are done))
No unit failsafe is bump start on dive (get wet) POS6 already has experience of how well that doesn't work, sad to say.
No reliance on visual Pos and Neg Tests (the unit check them -not the diver))
again, people are always the weak point. what you're offering is a unit that isn't what it says it is, unless you follow the rules. that's no different to CCR.
Analyzes gas on it's own (wrong tank with wrong gas will stop the checklists and warn))
really? not until it's calibrated it won't, let me see, if I run a calibration in 10/50 and it thinks air? does that mean I can get it to run 50% when it thinks 40%? computers make calculations, people make descisions.
No MAV/ADV confusion (there are no buttons to push and no mistake to be made by pushing the wrong one)))
and there no failure modes if something goes wrong. p.s. not seen a button on an ADV yet, and yet to see a mistake adding dil to a unit
Safe gas add on failure (in the event of malfunction, the unit begins to pulse the solenoid with a breathable gas)..
so it's failure mode makes it into a proper SCR, that's not a plus point
Go or no go operation ( anyone should be able to operate it and go off the loop in any situation)
, not sure this is even a point? anyone should be able to get off it in an emergency?
Auto on mode for accidental/emergency functioning ( Fall in the water or throw it in the water and it wakes up and runs- as long as the valve is turned on the gas will feed)
I assume you have seen the POS incident report that covers this?
Canister Must be in the unit for gas to pass(although it can be empty for gas to flow))
that's an advantage of what? weeding out people who can't assemble a unit?
Most Full CCR don't have an OEM option for Gaseous CO2 detection)
I'd question the need, unless your unit has such a poor scrubber duration the rules of gordon henderson and Zorg are not achievable, again not an advantage a support for a lacking maching.
OEM BOV is better smaller and lighter than just about any other currently available)
awesome, that's just not better. what's it's WOB compared to say a Golem Shrimp?
Multiple tank size options
as long as they aren't bigger than a 5l. so those 7's mounted on JJ's are out.
Transmitter can supply PSI to a completely different computer
lol. that's not ever going to be called better, the bottom of the barrel was about 6 lines ago.
Option to run analog SPG also
see last point and you're dsaying because the reg has more HP ports that makes the breather better than full CCR. really???
Gas consumption rate is calculated into emergency reserve (and depth)
full CCr has bailout. this comment assumes no bailout, which is safer
Triple (redundant and rechargeable ) batteries with real time calculation for battery usage
that's not a better than, that's marketing crap
Almost any 11 inch on center holed BC/BP will work (no special gear needed)
minimal prep time (comparatively)
really? i'd call BS on that. it needs the same pos and neg, the same calibration and the same set up. what time is saved???
Self Contained (compared to units with no BOV in less than 60ft)
any unit with a BOV is just as self contained to 20m, they both have the same failure modes and end results.
B
it's a sales gimmic, hoping to sell to those who want to do CCR but fancy looking like a storm trooper for £4K without actualy having the skills.
my fear is this R revolution will send the death rate up and soon a government will start to regulate to the lowest common denominator of R badge.
Well every person has different physiology on any given day, but I have done 3 or 4 dives a day for 4 days teaching and fun diving, I have had no problems. Sometime when teaching CCR I use the Explorer and keep up with the CCR's. Granted these are training dives, not big dives. This is one reason I keep harping on the fact that people should give it a try. If you run it correctly it works VERY well -right next to a full CCR- on rec dives.[/QUOTE]
