APD Rebreathers

[Tom Brett]

Ok Guys

I am stuck at the moment - I have been looking for a meg, but every one I find something goes wrong with the sale, so am starting to look at others
So I am thinking of the yellow boxes but I am lost

Can anyone explain to me in simple terms the differences between the AP Evolution Vision, AP Evolution Vision + PLUS and AP Inspiration Vision
Which would you go for and what extras?

Thanks for taking the time

Tom

[Stephen McElhone]

Hey Tom,
software wise the 3 units are the same.
The cylinders and scrubber are the difference between the unts.

Evolution 2x 2ltr cylinders 2 hour scubber
Evolution + 2x 2ltr cylinders 3 hour scrubber
Inspiration 2x 3ltr cylinders 3 hour scrubber

Hope this helps, if you have any further questions feel free to contact me.

[Chris Byrne]

,

[Tom Brett]

So with this the evolution+ seems to be the best deal?? with the 2ltr and 3 hour scrubber, am I right

Is there any other differences?

[Chris Byrne]

No electronics are are the same so its just scrubber and bottle size thats the difference. There all the same price if your buying new. The Evo+ is a few kg lighter if your traveling but if your tall some people say you need a stand on them.

They all have different advantages and disadvantages

I think a big thing to note is that if you do start to fell that you are getting limited by the tank size you can always just buy a 3l or a 5l (prob going a bit over board there) and stick them on to the evo 

[Tom Brett]

Are the tanks on them all interchangeable?
Tom

[Stephen McMullan]

I think a big thing to note is that if you do start to fell that you are getting limited by the tank size you can always just buy a 3l or a 5l (prob going a bit over board there) and stick them on to the evo

Don't think 3ltr (and definitely not 5ltr) will fit inside the Evo case

Are the tanks on them all interchangeable?
Tom

No, for the reason above

[tonyf]

I think a big thing to note is that if you do start to fell that you are getting limited by the tank size you can always just buy a 3l or a 5l (prob going a bit over board there) and stick them on to the evo

Don't think 3ltr (and definitely not 5ltr) will fit inside the Evo case


Think he meant outside the case.  To be honest a 1.5 lt on outside is good.  If you want to mount more on the case get an Inspo.

Tony

[emmbee]

Or you could get one that mounts the cylinders outside the case to begin with

[Chris Byrne]

Think he meant outside the case.  To be honest a 1.5 lt on outside is good.  If you want to mount more on the case get an Inspo.

Tony

Yip

Well you would hardly keep that yellow box on Stephen 

 

[Stephen McMullan]

Looks like there are some non-CCR diving/owning punters offering "advice" here 

I think you're all getting a bit ahead of yourselves thinking about the best way to mount larger inboards or mount off boards. You need to step back and figure out why you would be doing that and what problem/scenario you're addressing that you need this extra gas or redundancy. These considerations only really come in when things start to get deep (and by that I mean proper deep not the 40m dives you boys are at  ) or long duration.

I'd just get on with diving a bog standard unit first. A dive on an Inspo typically consumes approx 30-50bar of 02 and diluent out of 3ltr cyls.

[Chris Byrne]

Haha I was waiting for a slagging back 

Your right though Stephen as far as I havent a clue bout these things. However is there any problem with removing the case and putting a different frame on like a Kent tooling etc on a Evo+ and sticking two 3l bottles on the side??

If there is id prefer to know now rather than in a years time when I go to and its too late

[Stephen McMullan]

There's any amount of after sales add ons for rebreathers out there....your wallet is the only limit. No problem changing the case of a Evo+ for a frame. But why bother? Tony was on the money. I'd have no problem diving an Evo+ to 100m+ and do a 3hr+ runtime. Its the same scrubber as the Inspo. The smaller cylinders are not an issue. In the highly unlikely and abnormal situation that you run out of 02 then bring along an o-shit bottle (1.5ltr ali clamped to the outside of the case) and plug it in. Likewise if you run out of dil / wing inflation then plug in your LH bailout side sling. Definitely would not buy a frame to solve those issues.

The vast majority of the lads I dive with have unmodified rebreathers but we still have counter measures for pretty much every emergency situation.

Frames are a personal preference, not a necessity.

[Chris Byrne]

Cheers thanks for the advice 

[Stephen McMullan]

No bother. Couple of things I forgot to mention:

- running out of oxygen (e.g. 02 reg first stage fails) is a major concern as its a single point of failure. A rebreather cannot work without 02. When you're very deep and OC bailout is not an attractive option the solution to this is bring along a redundant source of 02 (oh shit bottle) and NOT to mount a larger 02 cylinder. The reason that lads modify their units to mount 5ltrs/7ltrs and bigger is nothing to do with the problem of running out of 02 as the single point of failure is still there.

- if 02 consumption is so small why use 3ltr cylinders? Well personally I use a lot of 02, doing loop flushes etc but the main convenience is that I can go away for a weekend and get more dives out of a cylinder and not have to boost. This is a big consideration in Ireland with the scarcity of portable boosters about the place. When I was diving the CCR initially without much deco then I could get 4-6 dives over 2-3 days out of a pair of 3ltrs. Now I have two pairs of cyls and can get 1 big dive each day for 3-4 days without feeling the need to top up.