Just became a mCCR-diver

JonORunde · 26th May 2006, 08:54

after having dived my Dolphin in SCR-mode, and added a second gas, it was time to go all the way.
KISS-valve has been installed, and yesterday I had two successfull ocean-dives in CCR-mode.
This is fun!

But:
The Uwatec/Oxy2 is giving me deco really fast! -my OC-buddy for the day (a.k.a. Swimming-bailout-man) on air, had more no-decotime than I had. And I breathed from about 28% to 40% during the dives. What gives? -is it that crappy? Must I get a VR3 right away?

Other then that, I'm very happy with the setup.
Currently I use a 4l for O2 and a 5l for Dil/Drysuit/bailout. Then I dont need a stage until I start deep/decoing on it.
The steel box, lets me use little weights, and the entire setup is actually rather light. More like 2x7/200-bottles on the wing.

Jon O

zèècalcoene · 26th May 2006, 11:29

Hello Jon O,

Good for u you modified yr Dolphin to mCCR ! You will never get back on SCR !.
However, Oxy2 is not good for mCCR.. there is somewhere an article explaining this .. but it is in French and I can't find it anymore.. perhaps the French memebers in this group could translate it and post it???? I could also translate it for u.. if I can get this paper..

Now u are in mCCR, u should go for a 3 sensor readout with at least 2 separte systems...
1) get yrself a VR3 (or other) with O2 lincking cable (PIN required to access software)
2) get yrself a secundary systems with min 2 O2 sensor readout...preferably with HUD ....see rEvodream by Paul Raeymakers
This is quite some investment.. but in the end this is where you will end up !

Best regards

Ivan

Philippe GERIN · 26th May 2006, 13:56

Quote: (Originally Posted by JonORunde)

my OC-buddy for the day (a.k.a. Swimming-bailout-man) on air
<snip>
5l for Dil/Drysuit/bailout. Then I dont need a stage until I start deep/decoing on it.
Jon O

John, you got me worried: There's no such thing as a swimming Bail out buddy and yes you DO need a separate bail out stage and need to practice switching.
Best
Philippe

JonORunde · 26th May 2006, 14:32

Quote: (Originally Posted by Philippe GERIN)

John, you got me worried: There's no such thing as a swimming Bail out buddy and yes you DO need a separate bail out stage and need to practice switching.
Best
Philippe

Yep, I do have a 7l stagebottle that I plan to use in addition to my "on-board"
Still 5l, 200bar if quite a lot of bailout for shallow dives, even if it is diluent and drysuit-gas. And -now I am just playing around with it -will bring the stage when I start to to _real_ dives with it...

The swimming bailout-think was just a joke

jon o

ebon.hawk · 26th May 2006, 18:01

Hi

Welcome to Rebreather World

Nice to see a Dolphin being converted to ccr, its something I plan to do with my Dolphin over the next few months.

Andy

annetj · 28th May 2006, 17:07

Congratulations JonO!

I guess we will do some real CCR dives with you soon

Anne
Fresh Meg-diver

JonORunde · 28th May 2006, 18:14

Quote: (Originally Posted by annetj)

Congratulations JonO!

I guess we will do some real CCR dives with you soon

Anne
Fresh Meg-diver

Thanks
Yep -I'm in.
Still in air-dil-mode though, so I can't follow you on the deep wrecks

Had a nice dive today again, the machine is performing very well methinks.

JOn O

**wedivebc** · 29th May 2006, 03:24

The way it was explained to me was the uwatc interpets a fast rise in ppo2 as a fast decent and it pelalizes you accordingly. I used one when I first converted and had the same issues.
www.ppo2.com is your friend

JonORunde · 29th May 2006, 07:56

Quote: (Originally Posted by wedivebc)

The way it was explained to me was the uwatc interpets a fast rise in ppo2 as a fast decent and it pelalizes you accordingly. I used one when I first converted and had the same issues.
www.ppo2.com is your friend

Thanks for that, a VR3 is inevitable I fear

Jon O

zèècalcoene · 29th May 2006, 11:09

Yes indeed, a VR3 or HSE will be inevitable..
As well as a secondary PPO2 readout..
Marc Munroe's dislplays work fine and are very reliable (PPO2.com) or via TECME..
However, I am speaking from a practical point of view... the calibration method... i.e. removing end-cap and using a small screw driver to calibrate the sensors is a hassle..
I used them, so I know.
Look for a system with auto-calibration (as done with VR3 or HSE)

Just wanted to help

cheers

Ivan

26th May 2006, 08:54	#1 (permalink)
JonORunde New Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Dec 2005 Location: Norway Posts: 86	Just became a mCCR-diver after having dived my Dolphin in SCR-mode, and added a second gas, it was time to go all the way. KISS-valve has been installed, and yesterday I had two successfull ocean-dives in CCR-mode. This is fun! But: The Uwatec/Oxy2 is giving me deco really fast! -my OC-buddy for the day (a.k.a. Swimming-bailout-man) on air, had more no-decotime than I had. And I breathed from about 28% to 40% during the dives. What gives? -is it that crappy? Must I get a VR3 right away? Other then that, I'm very happy with the setup. Currently I use a 4l for O2 and a 5l for Dil/Drysuit/bailout. Then I dont need a stage until I start deep/decoing on it. The steel box, lets me use little weights, and the entire setup is actually rather light. More like 2x7/200-bottles on the wing. Jon O
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26th May 2006, 11:29	#2 (permalink)
zèècalcoene New Member Current Rebreather/s: Dolphin Other Rebreather/s: Dolphin Join Date: Jan 2006 Location: Oostende, Belgium Posts: 14	Re: Just became a mCCR-diver Hello Jon O, Good for u you modified yr Dolphin to mCCR ! You will never get back on SCR !. However, Oxy2 is not good for mCCR.. there is somewhere an article explaining this .. but it is in French and I can't find it anymore.. perhaps the French memebers in this group could translate it and post it???? I could also translate it for u.. if I can get this paper.. Now u are in mCCR, u should go for a 3 sensor readout with at least 2 separte systems... 1) get yrself a VR3 (or other) with O2 lincking cable (PIN required to access software) 2) get yrself a secundary systems with min 2 O2 sensor readout...preferably with HUD ....see rEvodream by Paul Raeymakers This is quite some investment.. but in the end this is where you will end up ! Best regards Ivan __________________ mCCR Dolphin Diver
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26th May 2006, 13:56	#3 (permalink)
Philippe GERIN ccr apprentice Current Rebreather/s: Megalodon Classic Kiss Other Rebreather/s: Join Date: May 2005 Location: Menton, France Posts: 608	Re: Just became a mCCR-diver Quote: (Originally Posted by JonORunde) my OC-buddy for the day (a.k.a. Swimming-bailout-man) on air <snip> 5l for Dil/Drysuit/bailout. Then I dont need a stage until I start deep/decoing on it. Jon O John, you got me worried: There's no such thing as a swimming Bail out buddy and yes you DO need a separate bail out stage and need to practice switching. Best Philippe
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26th May 2006, 14:32	#4 (permalink)
JonORunde New Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Dec 2005 Location: Norway Posts: 86	Re: Just became a mCCR-diver Quote: (Originally Posted by Philippe GERIN) John, you got me worried: There's no such thing as a swimming Bail out buddy and yes you DO need a separate bail out stage and need to practice switching. Best Philippe Yep, I do have a 7l stagebottle that I plan to use in addition to my "on-board" Still 5l, 200bar if quite a lot of bailout for shallow dives, even if it is diluent and drysuit-gas. And -now I am just playing around with it -will bring the stage when I start to to _real_ dives with it... The swimming bailout-think was just a joke jon o
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26th May 2006, 18:01	#5 (permalink)
ebon.hawk New Member Current Rebreather/s: Dolphin Other Rebreather/s: Dolphin Join Date: May 2005 Location: Hoofddorp, Nederlands Posts: 59	Re: Just became a mCCR-diver Hi Welcome to Rebreather World Nice to see a Dolphin being converted to ccr, its something I plan to do with my Dolphin over the next few months. Andy
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28th May 2006, 17:07	#6 (permalink)
annetj New Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Jan 2006 Location: Oslo, Norway Posts: 26	Re: Just became a mCCR-diver Congratulations JonO! I guess we will do some real CCR dives with you soon Anne Fresh Meg-diver
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28th May 2006, 18:14	#7 (permalink)
JonORunde New Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Dec 2005 Location: Norway Posts: 86	Re: Just became a mCCR-diver Quote: (Originally Posted by annetj) Congratulations JonO! I guess we will do some real CCR dives with you soon Anne Fresh Meg-diver Thanks Yep -I'm in. Still in air-dil-mode though, so I can't follow you on the deep wrecks Had a nice dive today again, the machine is performing very well methinks. JOn O
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29th May 2006, 03:24	#8 (permalink)
wedivebc FIGJAM Current Rebreather/s: Megalodon Other CCR Other Rebreather/s: Not Bought Yet Inspiration Classic Sport Kiss Other CCR Join Date: Feb 2005 Location: Vancouver Island BC Canada Posts: 1,336	Re: Just became a mCCR-diver The way it was explained to me was the uwatc interpets a fast rise in ppo2 as a fast decent and it pelalizes you accordingly. I used one when I first converted and had the same issues. www.ppo2.com is your friend __________________ Cheers, Dave.... Man is the only animal burdened with the knowledge he will eventually die
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29th May 2006, 07:56	#9 (permalink)
JonORunde New Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Dec 2005 Location: Norway Posts: 86	Re: Just became a mCCR-diver Quote: (Originally Posted by wedivebc) The way it was explained to me was the uwatc interpets a fast rise in ppo2 as a fast decent and it pelalizes you accordingly. I used one when I first converted and had the same issues. www.ppo2.com is your friend Thanks for that, a VR3 is inevitable I fear Jon O
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29th May 2006, 11:09	#10 (permalink)
zèècalcoene New Member Current Rebreather/s: Dolphin Other Rebreather/s: Dolphin Join Date: Jan 2006 Location: Oostende, Belgium Posts: 14	Re: Just became a mCCR-diver Yes indeed, a VR3 or HSE will be inevitable.. As well as a secondary PPO2 readout.. Marc Munroe's dislplays work fine and are very reliable (PPO2.com) or via TECME.. However, I am speaking from a practical point of view... the calibration method... i.e. removing end-cap and using a small screw driver to calibrate the sensors is a hassle.. I used them, so I know. Look for a system with auto-calibration (as done with VR3 or HSE) Just wanted to help cheers Ivan __________________ mCCR Dolphin Diver
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