Think I Bottomed Out at 300' on OC

[sea2summit]

Ever heard of a Halcyon RB80?

Halcyon: RB80 Rebreather Introduction

The WKPP does all their push dives with semi-closed rebreather teams, so they've been doing breathers for awhile. I think the DIR issue is with CCR.

RB 80 is not a rebreather it's a semi closed not full closed circut.

 

[wedivebc]

RB 80 is not a rebreather .

It most certainly is

 

[Cave Diver]

RB 80 is not a rebreather it's a semi closed not full closed circut.

What do you think the "R" in "SCR" stands for?

Semi Closed REBREATHER

 

[sea2summit]

What do you think the "R" in "SCR" stands for?

Semi Closed REBREATHER

What does the S stand for?

 

[HullBlister]

I was talking to Casey MacKinlay in March after he presented at the Boston Sea Rovers show. We asked him about CC and he laid out a very convincing argument on why the WKPP doesn't need to go CCR. So I would seriously doubt that the rumours are true.

Have they played around with CCRs? Wouldn't surprise me. To not have done so would've been very closed minded which is not DIR. Have they been "on" CCR's for awhile? I don't think so.

In the FWIW department, isn't that GI3 diving a "refrigerator" rb at the end of disc 3 of DIR 2004?

Blister

 

[battles2a5]

In the FWIW department, isn't that GI3 diving a "refrigerator" rb at the end of disc 3 of DIR 2004?

Blister

Halcyon PVR-BASC

Also a semi-closed rebreather. I believe it was the precursor to the RB80.

 

[SparticleBrane]

I think the idea here is that some people consider SCRs, and the RB80 in particular, to be "gas-extenders" rather than "true rebreathers".

To me, whether it is semi or fully closed -- it's a rebreather. Slight differences in operation aside, they all recirculate gas through a scrubber and counterlungs (or a bellows system) and back into you. Thus in each version you are "rebreathing" the previous breath (or most of it)...how could you not then consider it a rebreather?

 

[ucfdiver]

RB 80 is not a rebreather it's a semi closed not full closed circut.

Might not be a rebreather, but you're getting 12+hours of bottom time or something crazy like that on it, so it's not quite open circuit.

 

[webhead]

If it has a CO2 scrubber and you're reusing the gas (breathing it more than once) to extract more O2, I think it's classified as a rebreather.

 

[wedivebc]

Since we are picking nits, technically the only true CCR is an oxygen rebreather and what we are calling CCR is actually a variable volume rebreather because there is a requirement to vent gas upon ascent.
But I agree with you they are all rebreathers

I think the idea here is that some people consider SCRs, and the RB80 in particular, to be "gas-extenders" rather than "true rebreathers".

To me, whether it is semi or fully closed -- it's a rebreather. Slight differences in operation aside, they all recirculate gas through a scrubber and counterlungs (or a bellows system) and back into you. Thus in each version you are "rebreathing" the previous breath (or most of it)...how could you not then consider it a rebreather?