Bailout tanks, What size / brand / Construction

Def

Ok,

I am now up to about 20hrs on my YBOD, very much a newbie and at the point I need to seriously think about my complete setup.

My Diving will be at the end of all this max 100m, but thats a LONG away away, currently most of my dives are in the 30-40m til I get to Mod3 where I will be doing a max of 60-70 on a semi regular basis.

So many people have so many ideas, and I like that...

In Australia, people are recommending Luxfer 10.5ltr Ali, but with all the gear I take, I see two of these, plus my phenom housing / lights etc I am going to be very big underwater.

I saw some Luxfer 8ltrs that would fit my needs alot better (size wise)

Thats 1760 ltrs @ 24ltr pm (high world load, my usual is 14) = 18minutes @ 30m or 12 minutes @ 50m worse case !!!

Thoughts / Ideas and what you use would be great!


PS - I am not to sure if this has been covered, if so please flame me and point me to the correct location!

jhaaja

There has been many discussions about this subject. You should be able to find something by searching.

You should have bigger tanks for bottom bailout and smaller for intermediate/shallow deco mixes. So for the deep AL80s seem to be popular and I personally like them, then 7L AL or AL40 for the shallower mixes could work. I bet that your MOD2/3 instructor can give you some good advice on this issue too.

JH

CCR-DIVER

Hello,

Imagine if your unit total fail in last minute botton time, than you need to come up on open circuit., For that you need to calculate your gas for all deco.

For dives until 40 mtr i use 7 litrs aluminium ( no deco)

for dives between 50 and 70 max i use two 7 litres (deco dives)

for dives more than 70 i use two 11.1 litres aluminium, and you can work like a team with your buddy.

In deep dives 90 - 100 - or more and in stress situation you will need more gas than normal.

is better more than less gas


cheers

and good deep safe dives

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José Marques

www.in-silence.com

Philippe GERIN

Without going into details, 2 x AL80 (bottom mix & travel/deeper deco mix) and 2 x AL40 (enriched/shallower deco mix) should cover all your needs.
Personnaly, I prefer the bouyancy characteristics of the AL80 over the 7L.
Best
Philippe

Explorer

Ditto here, I would go with Philippe's suggestion.

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TRAIN WRECKED.....

nmanfield

Thats 1760 ltrs @ 24ltr pm (high world load, my usual is 14) = 18minutes @ 30m or 12 minutes @ 50m worse case !!!


Those people I have spoken to who have had a 'nasty' happen to them are saying that they are going through a SAC equivalent of 50+ ltr pm. Not a great fan of team bailout but the minimum I'd carry is two 11 litres for a deep dive. Saying that, I have had some good advice (Mike in Playa Del Carmen) which was to run your dil plumbed into your unit and having air in your diluent tank for emergencies. This technique is especially good for logistics (one fill of an 11 litre rather than multiple top ups of a 3 litre (0r 2 litre if on a boris) and allows you to run the unit semi-closed for a long period of time. Also means that you can go on livebaoards with no Helium or compressors.

My shiny new Meg has the on board plugged into the ADV, so will look at connecting the offboard to the ADV instead - may need a new hose though - anyone else done this?

I'm not of the school of thought that says once your off the loop, you stay off the loop, rather; if there's a problem, go open circuit, sort it out then get back on the loop if possible / safe to do so. I still consider myself a newby (especially on the Meg!!) but would say that it is vital to be comfortable in flying the unit manually.

I'm sure that I'll get my Ar** flamed for the above but it would be interesting to see how many others use the same approach.

ATB

Nick

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Tub 'O Lard

nmanfield

Also may be a good idea if you're unable to get hold of 3 litre cylinders because you had to leave them at home 'cos you couldn't remove the basta*d valves

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Tub 'O Lard