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Hi all

I finally got the chance to dive my Apoc today at Long Beach in Simons Town. The site meets the definition of confined water for some training agencies. There was no wind, no swell, the viz was about 8 meters and other than a bit of rain while kitting up, it was a great day to go diving.

The machine held pos and neg tests for several minutes at home the night before, and just before we kitted up. Adjusting the harness was hardly necessary, except for the crotch strap.

Putting the crown strap on and the feeling of the ALVBOV pushing against my lips/gums was unfamiliar and took some getting used to. Initially I had the trigger necklace too tight and I could not get the unit to stay on CC ... it kept on bailing out. After a bit of fumbling (wearing 5mm gloves) I got that sorted out.

First thing I noticed besides buoyancy and trim which was spot on to start with, was that the cracking pressure of the ALVBOV is quite high in CC mode. I'm not sure if its supposed to be like that. Its harder to activate than any rebreather I have ever used before. Swimming with the unit seems easy and doesn't require much effort.

The cylinder valves are very easy to reach, and the unit is very comfortable in the water. Initially I had some trouble locating the bailout actuator and the purge button on the ALVBOV. By the end of the dive, it was no longer an issue. At the beginning of the dive I needed two hands to get the ALVBOV from OC into CC mode, but by the end of the dive, I could do it with one hand in quite a smooth, quick motion.

I suspect I may have to adjust the length of the breathing hoses, and it took some getting used to having breathing hoses running so close to either side of your head. Its much easier to turn your body than turning your head, and - although you can turn your head if you want to - it requires effort and is a bit uncomfortable. The ALVBOV does rest nicely against your chin and I think that it would work well when scootering with a minimum of strain on your mouth.

There was a bit of gurgling in the ALVBOV and breathing hoses during the dive, and I tried the water drain and it works a treat. After the dive it turns out that there was about a cup of water in the exhalation counterlung which I think was loose lips and/or because the crown strap was too tight and became progressively more uncomfortable during the dive.

When i tried to reach the counterlung pull dumps during the dive all I could reach were the first stage dust caps. The dust caps will definitely be left on land in my dive box next time

Next time I will also strap the cylinders onto the case higher up so that I can locate and pull the pull dumps during the dive.

The location of the manual add valve takes some getting used to for me since every other unit I've ever owned or built has it on the right chest, and I find my hand going there every time I want to add O2. I could reach it with my left and my right hand, so it would be possible to add O2 while scootering without coming off the trigger. When you add manually you can hear the gas enetering the loop quite clearly.

The WOB seems great in all orientations as far as I can tell. The difference in WOB when inverted, vertical and on your side is much less pronounced than in any other unit I've owned or dived before.

OSEL were spot on in saying that apart from the 4kg trim weight I would not need anything extra. Over and above my regular weight belt, I added the 6kg which is usually made up by a SS backplate, and a p-weight and it was perfect.

Cleaning the unit at home was an absolute pleasure. Really simple and quick.

In summary: I'm a very happy early adopter and I can't wait to do more dives with the unit. I need to add all my regular kit to it and find a good place to put primary & backup lights, suit inflation system, SMB, spools, reels, etc. for future dives.

Dive #1

37 minutes
max depth 5.1m
avg depth 3.3m
water temp 15 degrees

rgds
monty
 

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Monty,

Thanks for sharing.... Your experainces are pretty in line with mine... I have 6-8 dives on it at this point.... Couple comments...

1) Your correct that they cracking pressure is a little high. Personally I am VERY HAPPY with that. My biggest fear was that it would easily free flow and that's not the case. If you like diving a true minimal loop volume you should find it spot on... Others might find it a bit tight if like a loose ADV.

2) Yup on the dumps... It will take you a couple dives to get comfortable with reaching them....

3) I am not fond of the the length of the O2 MAV hose and have mentioned it to Alex. If your scootering you will find that the location is not the greatest and it forces you to point move your left hand a considerable distance accross your body. In practice it's alkward given that you will probably have a dive light in that hand....

Good luck!

Mark
 

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I'll report back further on mine after next week, I've got the week off and I'm going diving! I may also venture below 6m as well.
Here's some dive porn to keep you going:-

It's a prototype [email protected] pod that I'm diving next week..... Watch this space!

Simon A
 

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rEvolutionary Diving
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I'll report back further on mine after next week, I've got the week off and I'm going diving! I may also venture below 6m as well.
Here's some dive porn to keep you going:-

It's a prototype [email protected] pod that I'm diving next week..... Watch this space!

Simon A
Ahh you have narked at 90 making your pod. I may switch to that myself. I was going to use the OSEL ones when they were out but I didn't like the fact that I couldn't see them so I've had a guy making a "pod viewer" he's done similar stuff before.

I've got a link to a pic of him
http://ortasehpa.com/site/wp-content/uploads/2009/06/scooter-mirrors-1.jpg
 

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Duvet Diver
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Simon,
I've made a home brew pod as well, but it's ugly, much larger than the [email protected] pod and has no isolation in it.
John and Brent have kindly asked me to use/test one of their prototype pods to keep me going until the production pods are available.

As a side note:- I'm using what looks like a rEvodream as a secondary on cells 1 and 3, but it has been extensively rebuilt (think replacement board design, apparently it was about 30 hrs work) by a friend who is an electronics engineer to work with the passive isolation the pods use.
So If you're looking at a secondary to use with the [email protected] pod I'd suggest the Shearwater HUD, or another dive computer.

Simon A
 

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Hi!

About the cracking pressure of the ALVBOV. So there was no ALV delivered with the O2-version?
I find the documentation at the OSEL site a bit vague about what is included, at least my understanding is that the iccr version comes with both an ALV and the ALVBOV right?

ALV: A separate demand valve in this case attached to the counterlung, ie what most of us would call an ADV...
 

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I understand that the iccr comes without an ALV - apparently the ALVBOV is okay for CE for the iCCRs and the ALV is only needed on the commercial units
 

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I find the documentation at the OSEL site a bit vague about what is included, at least my understanding is that the iccr version comes with both an ALV and the ALVBOV right?
I think they offer the ALV for the exhale CL though its not included with the iCCR or O2.

To this point I have found that the ALVBOV arrangement has worked fine...
Concur.
Having dived the units with and without the seperate ALV, its not needed for everyday diving. The ALVBOV fills the role that other CCRs need a seperate ADV for.

Having the single lp hose from the regulator direct to the ALVBOV which fulfils the triple role of MAV, ADV and BOV really cuts down on the number of lp hoses required making for a very light and streamlined rig.

Regards
Brad
 

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Having dived the units with and without the seperate ALV, its not needed for everyday diving. The ALVBOV fills the role that other CCRs need a seperate ADV for.

Having the single lp hose from the regulator direct to the ALVBOV which fulfils the triple role of MAV, ADV and BOV really cuts down on the number of lp hoses required making for a very light and streamlined rig.
Hi Brad,
If separate ALV is not required for everyday diving, what are the conditions under which you believe it may be beneficial?

On the question of streamlining, have you included any connection between MUG and bailout tanks to enable access to bailout gas by ALVBOV?

Any other tips or tricks for new owners of APOCs from your experiences diving the units?

Thanks,
Tony
 

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If separate ALV is not required for everyday diving, what are the conditions under which you believe it may be beneficial?
Submarine lockout or if the Hazard Risk Assessment identifies an acoustic threat to the divers front.

On the question of streamlining, have you included any connection between MUG and bailout tanks to enable access to bailout gas by ALVBOV?
Tony, Not yet. I have been diving on and off with 7's for the past year which really makes the unit a 2 hand lift. Prior to that I was diving with 3's which do make life easier out of the water. In water I barely notice the 7's. In this configuration where I dive with a stage it is independent
Once the VIPR is available I will likely run a pair of OSELs very nice SCI carbon cylinders for MUG with internal oxygen. This will drop the rig back to a light one hand lift and I will look at plumbing in offboard bailout as its much nicer staying on the ALVBOV for bailout then going to an OC reg if possible.

Any other tips or tricks for new owners of APOCs from your experiences diving the units?
If your over 6'6" and diving with 7's on the siderails you will likely need an extra stand under the rig to be comfortable rigging up due to the extra unsupported weight on your back.
If it doesn't pass pos/neg, check the counterlung waterdumps as they might have been dislodged after draining water from the loop washing post dive.
If you have a garden tap that the frame can sit under it makes fresh water flushing easy as you can fill from the top and drain at the bottom.
Underwater after a while you tend to forget your diving a rebreather as it just melds to your body with the tailored frame, the ALVBOV out of sight and the low WOB.
Don't dive it with granular sorb as it spoils the nicer points.

Regards
Brad
 

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I think they offer the ALV for the exhale CL though its not included with the iCCR or O2.


Concur.
Having dived the units with and without the seperate ALV, its not needed for everyday diving. The ALVBOV fills the role that other CCRs need a seperate ADV for.

Having the single lp hose from the regulator direct to the ALVBOV which fulfils the triple role of MAV, ADV and BOV really cuts down on the number of lp hoses required making for a very light and streamlined rig.

Regards
Brad
Known in the uk, as having all your eggs in one basket
 

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Known in the uk, as having all your eggs in one basket
Ps
Brad
have you a photo of your light and streamlined rig. you must have sorted the hose routing problem then ,,

best
steve
 

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Brad,

Is the T-connection and non-return valve included in the iCCR for connecting an external bailout cylinder as shown in the 'standard' iCCR'
configuration ??

Ivan
 

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You think I know nothing....and I do!!
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Mine is arriving tommorrow (minus the iCCR loop....'to follow')...
 

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You think I know nothing....and I do!!
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:thumbs_up: happy days ,

so thats a o2 unit then
Yup, Shearwater and [email protected] pod for me m'dear untill the iCCR loop is ready to ship....I have retained my 50% deposit in the iCCR as an EA....so $995.00 for a base unit is ok with me as an interim measure. So long as I can bin the OC kit and get back on a 'breather I am reasonably happy...total cost of unit approximatly £2.7k, so I can live with that.

In all fairness to OSEL, they acted very promptly on my order change and shipped within a week, as promised. We also had a 'discussion' on various cylinder rig's, and they finally offered to ship me a selection of bottles and regs to try out. Maybe as a fledgeling company they are actually getting it together, even their emails have adopted a far more 'friendly' tone.

I hope they carry on the momentum with the work on the iCCR loop and get that to their patient customers quickly, my big fear is that it will 'fizzle out'.....but again lets give them a bit more time and see.

Now, on a serious note: Has anyone got a 3 cell Tx GF, Pursuit or Predator that they would like to sell???
 

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Yup, Shearwater and [email protected] pod for me m'dear untill the iCCR loop is ready to ship....I have retained my 50% deposit in the iCCR as an EA....so $995.00 for a base unit is ok with me as an interim measure. So long as I can bin the OC kit and get back on a 'breather I am reasonably happy...total cost of unit approximatly £2.7k, so I can live with that.

In all fairness to OSEL, they acted very promptly on my order change and shipped within a week, as promised. We also had a 'discussion' on various cylinder rig's, and they finally offered to ship me a selection of bottles and regs to try out. Maybe as a fledgeling company they are actually getting it together, even their emails have adopted a far more 'friendly' tone.

I hope they carry on the momentum with the work on the iCCR loop and get that to their patient customers quickly, my big fear is that it will 'fizzle out'.....but again lets give them a bit more time and see.

Now, on a serious note: Has anyone got a 3 cell Tx GF, Pursuit or Predator that they would like to sell???
yes but im keeping it , :D

good luck . and enjoy the new kit ,, m8 .. nice to hear your getting friendy tone,s with them emails :teeth:;)
 
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