Considering a Bail-out rebreather

Genesis

I am working on a BOB to go with the K1. Ain't saying nothing more about it right now, as there are some truly unique features that I'm building into it that will resolve most of the issues that I have been able to identify with carrying BOBs.....

If it works you'll see it - that much I'm absolutely certain of

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Micko

Cedric have a chat to steve or craig about twinning up the megs.
The boys are pretty happy how well this can work.
Its not as bulky as you may think.

Cedric thanks for the email

johnv

I didn't say it wouldn't work, just that the WOB would be high, I've tried it with a Reccy and found the WOB unacceptable - and I have a lot of experience with poor rebreathers.

if you stay horizontal or slightly head down all the time, you will probably be fine, but if like me your position in the water varies depending on the conditions, task & passage that must be negotiated, you will end up with hamster cheeks.

YMMV
John

decoweenie

You are a cave diver, and I am an ocean diver (until I move again) so there is a little more flexibility for me as far as position in water.

Again, it will be used as a BOB and not primary. If needed, I could simply unclip the bottom and let it float up horizontal if I have to stay vertical once bailed out.

Anyway, the best test is to dive the unit and make changes as needed. If all failed, I simply bolt a flat plate on the bottom to convert the scrubber back to original condition.

Thanks again for the input.

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Mdemon

Can I ask you guys who have dived a side-mounted BOB how long it takes you to deploy it please? I am assuming you also take enough OC to sanity-breathe during the transition phase too?

Is there a case for staging a BOB on a shotline to form part of conventional Team bailout? I always carry everything myself, but it seems that for very deep dives in teams, this could be a useful tool.

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decoweenie

Personally, I am planning to have either of my BOB unit available on the downline as a staged BOB when we dive the U-533 again in October.

The other unit could be used on the boat as an O2 unit.

Which goes where depends on the final configuration, but at the moment, I think the EDO-04/YBOD will be in the water and the C-96 in the boat.

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Marc T

[quote=decoweenie]I understand what you are saying, but it would only happen under very specific conditions:

IMHO, the accordion doesn't have enough "spring" to contract upward against the weight of the OPV plate to force all of the gas out of the loop and activate the diluent regs.

It has, just try one time and you'll see.

decoweenie

Sure, I will give it a try in the pool sometime soon...

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Decodiver

I have not used a BOB CCR but remain interested in principle.

However, having experience of suffering a pretty significant loop flood and ensuing caustic cocktail over two hours into a dive, I can tell you that I needed a significant amount of OC gas to stay alive as I was vomitting repeatedly.

My advice would be that had I purely another CCR to bail to, then I would probably have drowned.

Even with a BOB, if I get one, I will always carry OC as well.

Just my two Euro cents.........

Cheers,

Dave Cooper.

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Rebreather World Terms & Conditions

Marc T

Decoweenie said

" Ihave difficulty seeing how the WOB will be different when the unit is on my back or on my side - in horizontal mode. If anything, on the side will place it in the same water column as my lungs."

Yes you're right, I know a french cave diver ( Hello JPS )using the EDOO4 sidemounted for years and He said having a good WOB ( sorry dont yet found the way to send pics from my computer ), WOB is better than back mounted, when you are in vertical position because its possible to let the EDO counterlung floating at the same level than your lung

"However, if I am wrong, then it could still be used back on the XCR mode (on my back with twin supply tanks) except it is now an eCCR instead of mCCR. "

eCCR - EDOO4 ???


Or use as an emergency bail-out unit at deco station for deep dives. Etc...


Good way IMHO