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Thread: Looking for general rebreather advise

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    RBW Member wouterstorms is an unknown quantity at this point wouterstorms's Avatar
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    Question Looking for general rebreather advise

    Hi all! At the moment, I donít dive a rebreather yet. I am considering switching to a rebreather because I believe it adds safety on deep wreck dives due to more available gas and a lower task load compared to adding more and more bottom- and deco stages in OC.
    With that in mind I am trying to do some research on what kind of rebreather would suit me best. Hopefully you can give me some tips or point out potential oversights in my considerations. Here are my thoughts:

    - - Deep dives require sufficient bailout. If I have to go back to OC to go up to 20 meters and then do the rest of the deco I will need 2-3 ALU80ís for bailout. With longer runtimes, this could even increase.

    - - Since I already have doubles, wings, stages etc. it seems to make sense to add to that platform instead of replacing it. I am thinking that a D12 with DIL on my back would provide more than enough DIL and can work as bailout as well. Combine that with a ALU40 for O2 (can also be used for the last deco stops in case of bailout) and one or two ALU80 with 50% and a QC for the breather(for deco from 20m in case of bailout) would give me a setup that allows me to add a rebreather to my regular setup when needed, keep a similar equipment load, have additional safety because of the gas, have ample redundancy and is relatively travel friendly (D12s and ALU80 are everywhere, just bring the rebreather plug it in and youíre done).

    - - This leads me to think I should look for a sidemount model. On one hand, I like the simplicity of a PSCR (like the RB80). One the other hand, I like the idea of idiot proofness some eCCRs (such as the Poseidon7) seem to offer. Even though at the moment it seems a gas extender would do the trick for me, in the long run I think eCCR is the option I like most. The SF2 seems to be a model that checkís most (if not all) of my boxes.

    - - The SF2 and training are available in my region (Netherlands) and seems flexible enough to adapt if I ever would want to.

    This leads me to think the SF2 is a rebreather I should take into consideration. However, since it is a rather expensive toy, I would like to make an informed decision. Could you please comment on my logic? Does it make some sense, do I forget something really obvious, is there a far better strategy etc?

    Thank you in advance!
    Wouter


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    RBW Member topper133 is an unknown quantity at this point topper133's Avatar
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    Re: Looking for general rebreather advise

    I think you need to take a step back, you're thinking at a million miles an hour, I had to read most of that twice just to keep up!

    I also don't think "reduced task loading" is applicable, I'm not saying CCR adds significantly but it certainly doesn't reduce tasks.

    Why do you want to go CCR? Plenty of reasons, mine was I just wanted to, and luckily didn't have to cost justify, and I don't regret it, great way to dive.

    Don't think about all BO possibilities, you're going to be 100+ hours away from that, you'll be starting easy with single BO. Resale value is good on most units, so don't think you can go too wrong, find a good instructor and discuss with them.

  3. #3
    Dave Tomblin wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc's Avatar
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    Re: Looking for general rebreather advise

    The 2 rebreathers you mentioned are so completely opposite in the spectrum of rebreather philosophy that the in-betweens are just about every other rebreather out there. I'm with Topper on this. You are way over thinking the details without really an understanding of the broad strokes.
    Buy a rebreather somewhere in the middle of the spectrum. My recommendation would be a meg but there are lots of good units out there these days. I don't consider the Poseidon one of them and I am an instructor on that unit. I don't see an RB 80 a good candidate as it is designed for a very specific type of diving. Go out and dive whatever rebreather you choose then learn what tanks to use and how they best work with your needs.
    Cheers,

    Dave....

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    RBW Member wouterstorms is an unknown quantity at this point wouterstorms's Avatar
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    Re: Looking for general rebreather advise

    Hi guys, thank you for your input. I fully admit i haven't a clue where to start or what to ask, so this feedback is great to use as a starting point.
    And yes, I also know the rebreathers i mentioned are completely different. That kinda is my point, I want to add additional safety (gas / time) to long deep dives and a rebreather seems to be a good (the best?) way to do that. What model of rebreather on the other hand is a different and bigger puzzle.

    It seems to be a bit of a chicken and egg kinda thing; to be able to ask some proper questions, you need to have a better understanding. The better understanding comes with experience and training, and for the training you need to commit to rather specific model so you kinda need to pick something to know what to ask so you can actually pick
    I might be overthinking this slightly...

    Then again, the argument "you can't go too wrong, so go with something in the middle" is a good point. It should allow me to make some more informed decisions later on.

    The SF2 seems to be a nice in the middle model AND is used by a friendof mine (he is an instructor on the 7, so should be able to tell me more about both). Are there any questions i definitely should ask?

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    Fake Diver Jeff Pack will become famous soon enough Jeff Pack will become famous soon enough Jeff Pack will become famous soon enough Jeff Pack will become famous soon enough Jeff Pack's Avatar
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    Re: Looking for general rebreather advise

    the most popular RB are gonna be megs and revo's Followed probably by AP,Inspos, JJ's, and then on. Most people I know run revos or megs.

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    Re: Looking for general rebreather advise

    From a gear and configuration standpoint, I use a side mount setup (al80's with 4lb's of lead strapped to the tail with a tail bolt snap to a butt-plate) or when dry, 2 steel fabers.

    Regs, hoses, routing, bolt snaps, butt-plate, etc, etc are all the same.

    Then add a backmount ccr (KISS classic, revo, etc). They'll mount right to you your wing/backplate bar. Done.

    This configuration allows you to do things like this:
    1) When traveling light, only grab your wing/harness/regs/tank straps and go dive on a cattle boat with 1 or 2 al80's (cross sling the al80 under you if you need to).

    2) Same config, but grab 2 al40's and stay shallow - Even more fun with a scooter.

    3) Same config but add 2 al80s (deep bailout), 1 al40 under your left arm (ean50 or hotter) and 1 Meg and do some 300' dives.

    4) Same config as 3 but add 2 more tail mounted al80's, 1 al40 under your right arm (now you have 2 al80's sidemount, 2 al80's tail mounted, and 2 al40's under your side mount) and drop some stages from the dpv as you go for a very longggg swim.

    In the end, I settled on this configuration because of diving all over the place and in many different configurations. Nothing to re-learn, and everything is standardized.
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    RBW Member Dsix36 has a reputation beyond repute Dsix36 has a reputation beyond repute Dsix36 has a reputation beyond repute Dsix36 has a reputation beyond repute Dsix36 has a reputation beyond repute Dsix36 has a reputation beyond repute Dsix36 has a reputation beyond repute Dsix36 has a reputation beyond repute Dsix36 has a reputation beyond repute Dsix36 has a reputation beyond repute Dsix36 has a reputation beyond repute Dsix36's Avatar
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    Re: Looking for general rebreather advise

    Quote Originally Posted by brockbr  View Original Post
    From a gear and configuration standpoint, I use a side mount setup (al80's with 4lb's of lead strapped to the tail with a tail bolt snap to a butt-plate) or when dry, 2 steel fabers.

    Regs, hoses, routing, bolt snaps, butt-plate, etc, etc are all the same.

    Then add a backmount ccr (KISS classic, revo, etc). They'll mount right to you your wing/backplate bar. Done.

    This configuration allows you to do things like this:
    1) When traveling light, only grab your wing/harness/regs/tank straps and go dive on a cattle boat with 1 or 2 al80's (cross sling the al80 under you if you need to).

    2) Same config, but grab 2 al40's and stay shallow - Even more fun with a scooter.

    3) Same config but add 2 al80s (deep bailout), 1 al40 under your left arm (ean50 or hotter) and 1 Meg and do some 300' dives.

    4) Same config as 3 but add 2 more tail mounted al80's, 1 al40 under your right arm (now you have 2 al80's sidemount, 2 al80's tail mounted, and 2 al40's under your side mount) and drop some stages from the dpv as you go for a very longggg swim.

    In the end, I settled on this configuration because of diving all over the place and in many different configurations. Nothing to re-learn, and everything is standardized.
    which sidemount rig do you prefer and why?

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    RBW Member tbone1004 is an unknown quantity at this point tbone1004's Avatar
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    Re: Looking for general rebreather advise

    Quote Originally Posted by brockbr  View Original Post
    From a gear and configuration standpoint, I use a side mount setup (al80's with 4lb's of lead strapped to the tail with a tail bolt snap to a butt-plate) or when dry, 2 steel fabers.
    why bother adding 4lbs to each al80 when you have steels? Putting those 4lb weights on them makes them just as negative as most of Fabers tanks....

  9. #9
    Train Wrecked Guppy ;) brockbr has much to be proud of brockbr has much to be proud of brockbr has much to be proud of brockbr has much to be proud of brockbr has much to be proud of brockbr has much to be proud of brockbr has much to be proud of brockbr has much to be proud of brockbr has much to be proud of brockbr has much to be proud of brockbr has much to be proud of brockbr's Avatar
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    Re: Looking for general rebreather advise

    Quote Originally Posted by Dsix36  View Original Post
    which sidemount rig do you prefer and why?
    I have a single piece harness I made on a diverite Nomad wing with a small SS double D tail mount (not so much a butt plate as a stamped piece of SS acting as 2 D mount points ).

    I prefer it because:
    1) It's light by itself.

    2) With the side, chest and butt d-rings, I can rig in a standard way (side mount) when OC or CCR.

    3) Grabbing this configuration, I can jump on a plane and go dive off a cattle boat - I just ask them to hand me the 80's once I'm in the water.

    4) Same configuration can be reused to carry 4 al80s, x-number of 40's, etc on dpv dives (again, oc or ccr) and is very streamlined (oc) and relatively streamlined (ccr).

    5) It's easy to hike in - Nothing hanging loose. For those long, romantic jungle walks.

    6) I can fix/repair it pretty much anywhere - even in 3rd world countries.
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    Train Wrecked Guppy ;) brockbr has much to be proud of brockbr has much to be proud of brockbr has much to be proud of brockbr has much to be proud of brockbr has much to be proud of brockbr has much to be proud of brockbr has much to be proud of brockbr has much to be proud of brockbr has much to be proud of brockbr has much to be proud of brockbr has much to be proud of brockbr's Avatar
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    Re: Looking for general rebreather advise

    Quote Originally Posted by tbone1004  View Original Post
    why bother adding 4lbs to each al80 when you have steels? Putting those 4lb weights on them makes them just as negative as most of Fabers tanks....
    Add the 4lbs because most cattle boat al80's are positive when empty, and obviously because the cattle boat won't have my Fabers :D
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