02 fills

[Tom Brett]

Hi Lads
Well Im well on the way now with the rebreather and have to say finding it challenging - so so different then what I am used to, going from being very confident and confortable with twins to becomming a starter again on a rebreather - but taking it by the horns...... well when I am in control anyway!
The question now is where to get 200 bar 02 fills
This is my new problem - anyone recommend anywhere?

Thanks

Tom

[scuba steve]

get a booster 

or get :cough cough: industrial O2 

 

[Ken Hawk]

get a booster 

or get :cough cough: industrial O2 

 

You will still need a booster 

[Tom Brett]

Yep thats what i was thinking get 02, its the booster then thats the problem

Is there many / anywhere to get 200 bar fills?
If one has to get a booster - you need a compressor also dont u?

Thanks
Tom

[Turbo]

Tom
I thought I saw one up on divegear recently for sale: http://www.divegear.ie/ads_item.php?id=2589

hth

cathal

[Divin'Dec]

Hi tom.

I have one if you are stuck.

Regards
Dec

[gadget]

hi tom
i need go get a new cylinder and you can have some i am down to 50 bar
or if you get a booster i can give you the o2
when it is full it should have 230 bar or so
i will get one later in the week or early next week
or if you are in a hurry oceandivers might have enough

[Tom Brett]

Thanks lads
I was hoping to get some for this weekend comming - even up to about 150 bar.....
Its getting to Ocena Divers is the problem now
Thanks Dec for the offer - what is one costing these days?

Tom

[Ken Hawk]

Would you not be better looking out for a cpl of spare 3lt O2 bottles for the box, or you could get a 12lt filled and decant off that, making it worth your while driving to the dive shop.

I am sure the rebreather guys will be along soon and tell you what they do.

[Stephen McMullan]

We use boosters. I'm broke. Welcome to hell.

[Fintan Lowney]

Hi Tom,

We use the Stansted Fluid Power booster. Works well. You need a cylinder (old twinset) and reg to run it or buy a small electric garage compressor, crank it up 9 bar and that will work.

Welcome to the "spending" club!

Regards,
Fintan

[baza]

I use a  Stansted Fluid Power booster for mine too. You get 230bar o2 in no time into a 2 ltr or 3 ltr. I use my twin set as a bank of air to run the booster off. It works fine, but you have to have access to a HP compressor as the booster wont take too long draining the twins. My coltri MCH 6 keeps pace with the booster exactly...

If i'm filling alot of large capacity cylinders like my 50l banks, then I call in my wealthy buddies who have electric standsteds....

[Cathal_M]

What would be the minimum 02 pressure you'd be willing to start a dive on a rebreather, (3l) cylinder?

Bit of a leading question...

My point being:   If you're only starting out on a unit and building up shallow dives, can you get away with decanting 02 only?  In theory you should get 5 fills from a J to a 3l above 100bar by decanting only.   But are you pushing it starting off with <100bar of 02, particularly as a newbie whole be dicking about mask clearing, flushing loops, etc.

[emmbee]

For some reason, I was thinking along those lines...

Assuming 40 bar for a dive from a 3L (wikipedia says ~1.6 L O2/min, times about 60min), and a minimum of 100 to go in, starting with 60 in the 3, an Ali 80 at 200 should give you 9 dives.
Then you got about 60 in your 3, and a bit more than 100 in your 80, back where you started.
Because of the 100 minimum, cascading from two 80s doesn't give you much, maybe 2/3 extra dives.

I think.

Cheers,

Matthieu

[tonyf]

What would be the minimum 02 pressure you'd be willing to start a dive on a rebreather, (3l) cylinder?

Bit of a leading question...

My point being:   If you're only starting out on a unit and building up shallow dives, can you get away with decanting 02 only?  In theory you should get 5 fills from a J to a 3l above 100bar by decanting only.   But are you pushing it starting off with <100bar of 02, particularly as a newbie whole be dicking about mask clearing, flushing loops, etc.

If you take a 50lt cylinder (Diving grade I think 52 liter) with 220 bar,  you should get 12 fills above 100 bar. the last one will have 104 bar.  You can get by for a time but in the end you will need access to a booster.  Try find some others to join you on the cost if you can.

Fills would look like 207,195, 183,172,162,152,143,134,126,118,111,104 bar  Alot of diving

Tony