ISC posts test data

Mark Chase

I have to agree. The Golum isnt perfict but its WOB is fine for the diving I do. I have breathed a lot worse OC regs.

Id stay on it till the first gas switch. If it wasent good enough to do that id be looking for a new one. The Paragon was prety awful but The V4Tec and the Golum were both fine.

ATB

Mark

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mempilot

These tests are performed on with the respective scrubbers in the Megalodon. Having owned one of the few EAC adapters for the Meg, I can tell you that even MicroPore does not recommend using it in the Meg on anything but the shallowest of dives. The interface does not lend well to it. I talked to MP at DEMA07 and confirmed this.

The goal of the scrubber test wasn't to put down any particular scrubber, as one of the marketing points of ISC for the Meg is that all these scrubbers fit and work with the Meg. The fact that ISC worked to optimize it's own scrubbers for use in it's Rebreather is commendable. There are more options for scrubbers for the Meg than any other RB, giving divers that own multiple manufacturer's RBs or divers with specific needs more options.

These special need options were evident in the choice by the film crew of "The Cave" to use the EAC in Meg. The need to pack multiple scrubbers a day accurately by many divers over the course of the long shoot made granular sorb an iffy proposition for Jill and crew. Having EAC cartridges for that particular application probably simplified logistics ten-fold. The EAC worked in that special need category for the Meg.

The EAC works wonderfully in the Optima at all depths, as all my Optima friends have attested to. It does not, however, provide that same performance in the Meg application. These tests are an indication of use in the Meg only as I understand it.

It would be nice to see more units designed around the simple yet effective EAC cartridge in the future.

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MEM "Da Pilot"

Black holes are where God divided by zero.

"If at first you don't succeed, don't dive silent."

"Would you mind not shooting at the thermo-nuclear weapons." ~ Vic Deakins

"Donkey's kill more people annually than plane crashes."

Drmike

Honestly I dont know, I only know that all the BOV Ive tried at real depth havent breathed as well as normal OC regs. (I havent tried Golem one, but Ive used one with same internals)

I dont know if its the fact normally in a BOV the diaphram is facing down and under the chin rather than facing forward in same axis with the mouth. I can say that on normal OC regs that orientation seams to effect wob (put OC reg in mouth and look forward and breathe or look down and breathe I have at times experienced change in WOB depending on 2nd stage (diaphram) orientation ...but that could be subjective.





I think in the case of this report they are reffering also to the WOB through the CC side of the BOV.

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mempilot

I was told by a reliable source that Dive Rite does not endorse the Golem BOV, or any current BOV on the market for that matter, due to what they call tested inadequate WOB on their unit.

I think the thing here is what Mike is saying: Sanity breath and then offboard regulator.

Does Golem supply any of their own test data? I haven't seen any, but I doubt they recommend staying on the BOV through to the surface. Is the WOB bad enough to make it unsafe for a few breaths? Doubt it, but after a CO2 hit, maybe?

Mike, do you use the nasal sanity breath off your Drager, or are you using some other DSV integrated BOV? I'm getting ready to make the Drager purchase, and I had thought about putting the Golem on the loop as well.

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MEM "Da Pilot"

Black holes are where God divided by zero.

"If at first you don't succeed, don't dive silent."

"Would you mind not shooting at the thermo-nuclear weapons." ~ Vic Deakins

"Donkey's kill more people annually than plane crashes."

Drmike

Nasal

When I have bailed for real (stressed and puffing) nose breathed (perhaps 5 breaths or so) whilst fumbling for and connecting offboard 2nd stage into main mask p-port. Cont. nose breathing is doable if not puffing but only a setpping stone if you are. Inhale wob is good but exhale is hard. exhale wob can be assisted by pulling bottom of mask off face slightly and or lightly pressing the 2nd stage purge.

I see nose breathing as more prevention rather than cure (prevent hyperventilating by encouraging sanity breathe at slightest sign) and to make transition from ccr to full oc bail less stressful (dont have to stop breathing)

Even the Kirby morgan Nato pod wasnt rated (by KM) for bailout below 10m. I dont know of any BOV that has ever passed CE WOB standards - perhaps the Divex one?

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mempilot

This is what I was thinking. It seems to be the quickest and simplest way to get a sanity breath while performing the actual bailout. The prevention aspect is huge in my mind.

Thanks.

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MEM "Da Pilot"

Black holes are where God divided by zero.

"If at first you don't succeed, don't dive silent."

"Would you mind not shooting at the thermo-nuclear weapons." ~ Vic Deakins

"Donkey's kill more people annually than plane crashes."

diverreb

I use the Golem BOV on my O2ptima, and while I haven't tried it deeper than 130' yet, it performs well at that depth. Tried a few different breathing rates and all worked well.

Perhaps DiveRite is looking to supply their own BOV in time, and they just don't want everyone to already have one.

Richie

mempilot

That may be the case.

It is probably a R&D project at every manuf to provide a factory BOV option. If not, they are just handing revenue and safety over to 3rd parties.

__________________
MEM "Da Pilot"

Black holes are where God divided by zero.

"If at first you don't succeed, don't dive silent."

"Would you mind not shooting at the thermo-nuclear weapons." ~ Vic Deakins

"Donkey's kill more people annually than plane crashes."

tecdivertraining

I remember years ago looking at breathing resistance tests of regulators while on a regulator manufacture factory visit and it was quite clear the only thing that could tell a small difference was the computer.

I have been using golem products with my meg for two years and have hundreds of hrs with both the BOV and the radial (over 11hrs continuous use on the radial). I have dived and put them trough their paces in fair depth and no troubles with good WOB sub 100msw at high work load.

I support all the hard work and effort they do at the factory in producing a high quality unit but having saved more than one life in using the BOV one must emphasize the benefit if you are to give a buddy any chance of bailing you out. Until the factory bring out an ISC approved version it will stay on my rig.

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Mathew Partridge
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sadave

Hey guys, when they're talking about WOB for BOV's, do you not think they're talking about the WOB with it in CC mode? Forget about the OC reg, as stated, its "sanity breaths" only...

I know from personal experience, the WOB (in Closed Circuit) of the KISS BOV is noticeably higher than most other DSV's...

I would have thought that was what the WOB tests were all about, the work of breathing of the rebreather, not of one part of it in Open Circuit mode.....

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