Twins v Rebreather

A Place for Discussions On All The Various mCCRs, eCCRs, SCRs & Diving Profiles.

Postby Martin-PK Divers » Sun Apr 29, 2007 2:09 pm

Gregv wrote:You know how it is Andy. We're still using Buhlmann's work from the 60's in 2007. I'm sure we'll have algorithms implementing recent research findings by, oh, I don't know, 2020??



Why is this?
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Postby Azza » Sun Apr 29, 2007 2:53 pm

Gregv wrote:We're still using Buhlmann's work from the 60's in 2007

Are you? Scary... :lol: I cant bring myself to use prehistoric algorithms

I see you have adapted from Wellington to Northland very well :D
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Postby petemes » Sun Apr 29, 2007 5:34 pm

Interesting topic. Rebreathers versus open circuit. You talk to people who dive on breathers and they say bollocks to open circuit - you talk to people on open circuit and all they can say is how can i justify the cost? Some day - dont want one - dont need one
One thing is for sure, rebreathers are certainly not for most people. When I first got into breathers I thought that everyone should have one. But now I say the opposite.

Breathers will always need a dedicated diver in his sport to drive it. Price has been a great tester for those who are dedicated to their sport. Now I dont want to get into a banging match to see who is so called "dedicated or not" All I am saying is that the price has kept all the divers at bay that would like a breather but are not serious enough with their diving.

Unfortunatly most people that have gotten into breathers have been from the tech diving realm, seeing advantages on reduced gas usage, helium costs and reduction in decompression. But really you must look at what percentage of your diving is spend doing deep shit? Maybe less than 1% most of the time. All the rest is NDL diving, spending long times in the water taking pictures, video, getting close to nature etc etc.


If you want to get into breathers soley to dive deep then save your bucks. Look how many dives you do a year that are deeper than 50m and have a count up on the rest. Now I am generalising here but most diving people do is NDL stuff, so what you need to ask yourself is "is a breather going to give me advantage in what I spend 99% of the time doing?"

So many deaths on breathers were brought down to people who were very experienced open circuit divers, but BEGINNER breather divers. They would make entry level mistakes which killed them ( not turning unit on, not turning gas on etc etc)

Richard Pyle (breather diver extroardinare!!) was quoted saying

""After my first 50 hours diving on a rebreather I thought I knew it all
the next 50 hours showed me how little I knew about them"


How true he was.


my 0.02c worth

IF you are a methodical person, dedicated to your sport, patient ( because you need to put a year aside to get 50+ hours on the unit to get yourself to a comfprtable and competent level) then a breather might be for you.

Granted if you screw up once that cold cost you your life,. you are using a highly sofisticated, specialised piece of kit. IF you are waiting for the price of breathers to come down to buy one, then maybe stay on open circuit. There are more breathers coming on the market and there will be ones at reduced prices but price is not nor should be a factor for you getting into a breather. Being dedicated to your sport should be #1 factor. IF you cant afford one ( hell lets face it who can???) then you dont want it bad enough.

Hell if you want something bad enough you will always make a plan, get it on hock, whatever.

Asking the wife???? wellll,....... now its easy to ask for forgivness than permission.

I will be holding rebreather orientation days where we will spend a few hours in the classroom going over the workings of them, different types in the market, what to look for etc, then hit the pool to give them a trial dive. THis is great for instructors who have no clue about them. Its a good overview of rebreathers. If you dont like rebreathers it doesnt mean that they are shit, give your candidates a fair chance to get proper information.

The day will cost $120 check out details on my site www.petemesley.com will be held at Orakei sometime next month ( I am still working safety on Castaway set till then)


IF anyone has any questions that they want to post me privatly let me know.

Dive safe

Pete
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Postby Gregv » Tue May 01, 2007 6:26 pm

Jeez Pete. Didn't know you could be so verbose!

Have to agree with everything you've said above.

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Postby PoorKnightsDiver » Tue May 01, 2007 6:34 pm

Hi Greg

Just checking you got my PM regards the research you were doing?
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Postby petemes » Tue May 01, 2007 6:58 pm

Gregv wrote:Jeez Pete. Didn't know you could be so verbose!

Have to agree with everything you've said above.

Greg



For a start I have a lot of time on my hands here on the barrier so this is why I have started talking drivvle on this site, so apologies for that! ( I just wish I knew what "verbose" was - you academic!!)


next diving mission coming up in june. I am sure you will be up for something or other!
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Postby Azza » Tue May 01, 2007 10:07 pm

petemes wrote:You talk to people who dive on breathers and they say bollocks to open circuit - you talk to people on open circuit and all they can say is how can i justify the cost?
Not me. Dont need one, dont want one. Open Circut is fine by me. Good on you guys that dive 'em tho.
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Postby petemes » Wed May 02, 2007 7:43 pm

Azza wrote:
petemes wrote:You talk to people who dive on breathers and they say bollocks to open circuit - you talk to people on open circuit and all they can say is how can i justify the cost?
Not me. Dont need one, dont want one. Open Circut is fine by me. Good on you guys that dive 'em tho.



Hey, its all about the diving right?!!!!! who gives a dam what we wear. This is why I love going to Oztek. - Its a technical diving conference - no - its an adventurers conference. For anyone that have never been to it I really would recommend that you take the time to go. Its held every 2 years and held in Sydney. You have the worlds explorers meet up under one roof and it really motivates and astound me how many people out there are doing some of the most amazing stuff. Noone banging on about which gear setup to use or which training agency is better, JUST EXPLORERS telling you what they have been up to.

I would really recommend you all go if you are interested in adventure. Its a great weekend. Also the dinner is one hell of a good night. I must dispell any myth - I did NOT fall asleep on the bar counter - that was my ozzi mate!!!!
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Postby Packhorse » Wed May 02, 2007 11:28 pm

petemes wrote: - I did NOT fall asleep on the bar counter -


So you passed out??? :wink:
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Postby petemes » Thu May 03, 2007 12:41 am

Packhorse wrote:
petemes wrote: - I did NOT fall asleep on the bar counter -


So you passed out??? :wink:



Nope. but my ozzi mate had a little power nap and got straight back into it by the time the barman came with the shooters!
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Postby Martin-PK Divers » Thu May 03, 2007 3:35 am

Rebreathers, mmm. Jill NOT pleased. :?

Think she thought 'Shadowfax' was the last dive toy... :D
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Postby Azza » Thu May 03, 2007 8:05 am

petemes wrote:
Hey, its all about the diving right?!!!!! who gives a dam what we wear.
Not me. Each to his own I say. I dive to relax and having a mechanical process delivering air to me is very relaxing. One day I may change my mind and go CC but for now I am completely happy with OC.
Kudos to you guys diving SC and CC tho...some of the greatest underwater exploration in the world has been done on a breather...
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Postby Andy » Thu May 03, 2007 10:11 am

petemes wrote:Hey, its all about the diving right?!!!!! who gives a dam what we wear.


As long as it's a high perfor......... ;) :shock:
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Postby DiveDiva » Thu May 03, 2007 12:05 pm

I have to say that principally I'm with Azza on this, even though I vow always to try everything at least once.

I also find OC relaxing (must be something to do with the sound of my own breathing) and technically I suppose I enjoy its simplicity, (demand valve, fail safe etc). I also like being able to, relatively inexpensively, screw a set of regs onto a tank and go diving without the real risk of poisoning myself!

Don't get me wrong, I think the breather technology is amazing and the diving future looks bright. I just don't think it's for me :D


DD
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Postby chickdiver » Fri May 04, 2007 3:56 am

DiveDiva wrote:I have to say that principally I'm with Azza on this, even though I vow always to try everything at least once.

I also find OC relaxing (must be something to do with the sound of my own breathing) and technically I suppose I enjoy its simplicity, (demand valve, fail safe etc). I also like being able to, relatively inexpensively, screw a set of regs onto a tank and go diving without the real risk of poisoning myself!

Don't get me wrong, I think the breather technology is amazing and the diving future looks bright. I just don't think it's for me :D


DD


LOL, you still hear your own breathing, as well as the pop as the mushroom valves in the loop open and close. Rather than being a loud, mechanical sound, though, the sound of your breathing is a soft sussorus. More like a sleeping sound rather than how you sound after running a couple of miles.
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