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Who cares about this pedantic analysis of analogies?? The only point I wanted to make was that many things can be dangerous if used incorrectly. Rebreathers are not dangerous if used correctly. And using one correctly includes understanding how to monitor their continued function, and work...

O2 sensors die by becoming current limited - if they were reading 1.3 two minutes ago, they are going to work at 0.7. Checking that they read higher by adding O2 is a much more relevant test of your sensors. All the rest of your list has been confirmed in the last couple of minutes by monitoring...

Drive along the road at 100 and take you hands off the wheel for a couple of minutes - and you will die. Go a couple of hundred meters into a cave with a single tank and run out of gas - and you will die. Lie face down in the bath and don't raise your head to breathe - and you will die. Seems...

That attempted sledge is irrelevant to the discussion of why flushing with dil before leaving the bottom is a bad idea. The maths on what happens to the PPO2 on ascent is true for any rebreather that is not adding O2 for you - it's not specific to the unit I dive as you have tried to imply...

If you flush and the unit starts adding O2, then the unit was working all along and you have achieved nothing by flushing. If the unit isn't working correctly (And for someone to die of hypoxia on a HH it needs the unit to not be working correctly) Then flushing with a gas with PPO2 of .21 will...

There is just so much wrong with this post that I'd consider it a joke if it wasn't on such a serious subject. Lewis was not the sort of diver to climb a rope on ascent Lack of bubbles just mean he wasn't ascending and venting There isn't a rebreather out there that screams at you to...

I'd actually just seen it in V-planner looking at the weekends dives... but looking it up in a manual was a good idea ;) Se7en

60 feet depth on a 1.3 setpoint is the same as an air dive to about 25 feet. Your NDL is measured in days not hours... but you will hit the 100% cns limit at around 3 hours. In short, don't worry about it. I generally dive an air computer shallow, and tables deep Se7en

Best rebreather? Arguably the Cis-lunar Mk V Cheapest rebreather? Probably sports Kiss Most popular CCRs? In terms of numbers in use probably Inspiration Biomarine MK 15 15.5 16 Prism KISS Classic Megladon Best first rebreather? One you build yourself. Once you've done this...

Buying any gear and going diving more is a good result. At the moment you probably don't have enough experience to know what you really like - reguardless of how many internet divers are telling you exactly what you want. So don't worry about it, just take the gear you have and go dive it until...

KISS / mini kiss is dived with 2 by 8 cuft (1 litre) tanks for a couple of hours at any depth... The benefits of closed loop rather than leaky pipe... Se7en

Hang on... don't you drive an elise? Airbag count = 0? Se7en

Cause you like being comfortable on the boat and don't vent your drysuit before you get in the water... Just jump in and let hydrostatic pressure do it for you. I pretty much have to do the first few feet vertical to get the air out of my drysuit so I can go horizontal or head down without...

I believe there are some isolators where this is not true, but agree that in general it is, and it's a poor design where it is not. Having never seen a stem Oring failure, what is the gass loss rate likely to be? How much gas do you loose before you can get the isolator shut down, knowing...

Sorry, but this is complete crap. Diving with manifolded doubles, you use 1/3 of your gas going out, 1/3 back, and 1/3 is kept in reserve. Diving independant doubles you breath 1/3 of each tank out, 1/3 back, and 1/3 of each tank is kept as reserve. Obviously you need to swap regs to do...

Ummm - maybe I missed something, but why do you need a bottom mix with a 1 atm suit? At 1 atm, all you need is an O2 rebreather. Makes me wonder how much thought has gone into this... Se7en

It's the combustion triangle thingy. You need fuel plus heat plus O2 to get combustion. Now O2 you got lots of, so you need to reduce the other two. If you are absoulutely, 100% sure that you have nothing that can combust coming in contact with the O2, then you could bounce it around all...

Hypocrisy at it's finest. First you say that you'd only dive with RavenC after she signs a waiver and pays you. Then you tell her the only way she can advance is with some mentoring. Which you are patently adverse to giving. (Mentoring DOES NOT involve being paid) So how are new divers...

I gotta ask What the hell is the point of a 6 lbs lift bag? Why would you bother carrying something that small? The only things I've seen smaller than about 50 lbs are those tacky plastic 'safety sausages' that split as soon as you look at them - and they'd still be 20 lbs plus. Buy some...

I agree wholeheartedly!