WOB - Opinions please

paulraymaekers · 17th October 2007, 09:24

Quote: (Originally Posted by Demosthenes)

All Paul needs to do is change his crummy Drager hoses and the DSV

hello, the hoses and DSV are not so bad at all...

hose internal diameter is +/- same as inspiration/meg/kisses, a little bigger than optima, smaller then boris/sentinel

the pressure tests on the DSV showed that it was not the worst of the list, and surely better then some units with a BOV mounted: just take a look at the opening trough wich you breath!

no doubth that the boris/sentinel hose/DSV breaths better, but... just try it for yourself! (I still have my teeth :-)

but don't forget that there are always dilimma's: you can make anything bigger, but then people start complaining you get a huge unit, and far too much volume inside to get negative for diving... always a compromise..

paul

Marin · 17th October 2007, 20:05

Thanks for your points of view!

It seems to me that there is no perfect unit, each of them have there own good points and drawbacks, its just a case of choosing the one that ticks the most boxes on your own priority list.

For my two penneth, I think the rEvo looks a solid well thought out unit.

ebourzeix · 20th October 2007, 14:24

I agree with Paul.

'Ray' hoses & DSV have reasonable costs and could be bought easely arround the world.

Why reinventing the wheel ?

Eric

Hanssing · 20th October 2007, 14:54

Quote: (Originally Posted by ebourzeix)

I agree with Paul.

'Ray' hoses & DSV have reasonable costs and could be bought easely arround the world.

Edit - Nonsense: Actually its more than that. Alex Deas (AD_Ward9) and the OR-team tested the hoses from different rebreathes, and the ray-DSV+Hoses came out near the top. I'll try and see if I can find the post.
Edit: I just checked with AD, and I'm way off. Sorry about that.

----------------------

The hoses are fine, I had questions about them also (P-Ports especially), but its german engineering, and they work.

Regards
Nicolai

**Freef** · 20th October 2007, 16:18

WOB may also depend on the following:

Scrubber choice

Gas choice

Depth you dive.

CL position

I dive a Dolphin on 797 1-2.5mm or spherasorb. I can't detect any difference in the WOB down to 35-40m [the max I can do on nitrox in the Dolph].

Mind you, all my regs are skightly detuned for a snightly higer WOB equivalent.

The real difference is when I roll on my side or back. Changing CL position is a major factor.

***Decodiver*** · 22nd October 2007, 09:29

Quote: (Originally Posted by Marin)

I am looking into making the transition into a bubble free world and after spending a long time trawling through posts on Rebreather World and having had a good look at all of the options at Dive 2007 in Birmingham this last weekend I really like the look and the thought process behind the rEvo.

That said, the current debate that is raging elsewhere on Rebreather World suggests that the rEvo WOB leaves a little to be desired. Paul has rigourously defended his baby (as any Father would) but I was wondering how you guys compare it with other units that you have dived.

Please note that I am not being antagonistic as I have a genuine interest in this unit, I am merely looking for informed feedback.

Marin,

I have, as Rich has kindly stated, a number of rebreathers that I dive.

Amongst them is the rEvo and I think it is a cracking piece of kit.

If it breathed crap I would not use it, as simple as that. Why force myself to dive something that is uncomfortable when I have such a choice?

I find WOB on the unit to be more than acceptable when the diver correctly runs it at minimum loop volume, hell, I dived mine to 85 metres twice this weekend in Lake Geneva and it performed faultlessly.

Set up is easy, and rapid and the unit is well made.

I really enjoy diving mine.

Cheers,

Dave Cooper.

PnL · 27th November 2007, 05:49

I've only had my rEvo since August 2007 and this is my first CCR so my opinion is from one who can only compare to OC. However, I had similar when considering a transition to CCR - I had heard and read that OTS offers the best WOB while BMCLs provide the worst. This is physics and it makes sense. However, my experience in switching to the rEvo was that it was significantly easier to breath than I had believed based on all the comments on this, and other, boards about BMCLs. Perhaps I'm not as sensitive as others, but I had no problems with the WOB, although it does increase when looking up or upside down - but even then its not a problem to breath, just not as comfortable. The key to the rEvo is how close the CLs are to your own lungs.

As with anything new, there is an adjustment period, but most technical divers adapt fairly readily to new equipment and skills with the proper training and practice.

Just my limited experience from a new CCR diver.

17th October 2007, 09:24	#11 (permalink)
paulraymaekers rEvo's daddy Current Rebreather/s: rEvo Other CCR Home Build Other Rebreather/s: rEvo Other CCR Home Build Join Date: May 2005 Location: belgium Posts: 1,498	Re: WOB - Opinions please Quote: (Originally Posted by Demosthenes) All Paul needs to do is change his crummy Drager hoses and the DSV hello, the hoses and DSV are not so bad at all... hose internal diameter is +/- same as inspiration/meg/kisses, a little bigger than optima, smaller then boris/sentinel the pressure tests on the DSV showed that it was not the worst of the list, and surely better then some units with a BOV mounted: just take a look at the opening trough wich you breath! no doubth that the boris/sentinel hose/DSV breaths better, but... just try it for yourself! (I still have my teeth :-) but don't forget that there are always dilimma's: you can make anything bigger, but then people start complaining you get a huge unit, and far too much volume inside to get negative for diving... always a compromise.. paul __________________ www.rEvo-rebreathers.com .... the earth is flat, Elvis is alive, and radial scrubbers give longer dwell time than axials...
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17th October 2007, 20:05	#12 (permalink)
Marin New Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Jan 2007 Location: UK Posts: 10	Re: WOB - Opinions please Thanks for your points of view! It seems to me that there is no perfect unit, each of them have there own good points and drawbacks, its just a case of choosing the one that ticks the most boxes on your own priority list. For my two penneth, I think the rEvo looks a solid well thought out unit.
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20th October 2007, 14:24	#13 (permalink)
ebourzeix New Member Current Rebreather/s: rEvo Other CCR RB80 / Clone Home Build Other Rebreather/s: rEvo Other CCR RB80 / Clone Home Build Join Date: Mar 2006 Location: Geneva (CH) Posts: 83	Re: WOB - Opinions please I agree with Paul. 'Ray' hoses & DSV have reasonable costs and could be bought easely arround the world. Why reinventing the wheel ? Eric __________________ http://plongeesanssel.com http://leman.oldiblog.com/?page=articles
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20th October 2007, 14:54	#14 (permalink)
Hanssing flap-flop ..... flap-flop Current Rebreather/s: rEvo Other Rebreather/s: rEvo Join Date: Nov 2005 Location: Denmark Posts: 407	Re: WOB - Opinions please Quote: (Originally Posted by ebourzeix) I agree with Paul. 'Ray' hoses & DSV have reasonable costs and could be bought easely arround the world. Edit - Nonsense: Actually its more than that. Alex Deas (AD_Ward9) and the OR-team tested the hoses from different rebreathes, and the ray-DSV+Hoses came out near the top. I'll try and see if I can find the post. Edit: I just checked with AD, and I'm way off. Sorry about that. ---------------------- The hoses are fine, I had questions about them also (P-Ports especially), but its german engineering, and they work. Regards Nicolai __________________ Woohooo - I can change my rEvo! Its going to be bitchin' tricked out piece of gear Last edited by Hanssing : 20th October 2007 at 18:05. Reason: Factual update.
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20th October 2007, 16:18	#15 (permalink)
Freef Custom Title Disallowed! Current Rebreather/s: Dolphin Other Rebreather/s: Dolphin Join Date: Jan 2006 Location: Land of the Freef, UK. Posts: 1,356	Re: WOB - Opinions please WOB may also depend on the following: Scrubber choice Gas choice Depth you dive. CL position I dive a Dolphin on 797 1-2.5mm or spherasorb. I can't detect any difference in the WOB down to 35-40m [the max I can do on nitrox in the Dolph]. Mind you, all my regs are skightly detuned for a snightly higer WOB equivalent. The real difference is when I roll on my side or back. Changing CL position is a major factor. __________________ David. Currently owner of two differently sized ankles.
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22nd October 2007, 09:29	#16 (permalink)
*Decodiver* Administrator Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Jan 2005 Location: Geneva Posts: 2,197	Re: WOB - Opinions please Quote: (Originally Posted by Marin) I am looking into making the transition into a bubble free world and after spending a long time trawling through posts on Rebreather World and having had a good look at all of the options at Dive 2007 in Birmingham this last weekend I really like the look and the thought process behind the rEvo. That said, the current debate that is raging elsewhere on Rebreather World suggests that the rEvo WOB leaves a little to be desired. Paul has rigourously defended his baby (as any Father would) but I was wondering how you guys compare it with other units that you have dived. Please note that I am not being antagonistic as I have a genuine interest in this unit, I am merely looking for informed feedback. Marin, I have, as Rich has kindly stated, a number of rebreathers that I dive. Amongst them is the rEvo and I think it is a cracking piece of kit. If it breathed crap I would not use it, as simple as that. Why force myself to dive something that is uncomfortable when I have such a choice? I find WOB on the unit to be more than acceptable when the diver correctly runs it at minimum loop volume, hell, I dived mine to 85 metres twice this weekend in Lake Geneva and it performed faultlessly. Set up is easy, and rapid and the unit is well made. I really enjoy diving mine. Cheers, Dave Cooper. __________________ CCR/OC Trimix Instructor Trainer CCR Training to Mixed Gas in Switzerland, France, UK & Germany on Megalodon/COPIS-Megalodon/KISS/Sport KISS/Ouroboros/rEvo/Inspiration/Evolution/Sentinel www.zerogravitydiving.com Rebreather World Terms & Conditions
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27th November 2007, 05:49	#17 (permalink)
PnL Custom Title Allowed! Current Rebreather/s: rEvo Other Rebreather/s: rEvo Join Date: Mar 2007 Location: San Diego, CA Posts: 183	Re: WOB - Opinions please I've only had my rEvo since August 2007 and this is my first CCR so my opinion is from one who can only compare to OC. However, I had similar when considering a transition to CCR - I had heard and read that OTS offers the best WOB while BMCLs provide the worst. This is physics and it makes sense. However, my experience in switching to the rEvo was that it was significantly easier to breath than I had believed based on all the comments on this, and other, boards about BMCLs. Perhaps I'm not as sensitive as others, but I had no problems with the WOB, although it does increase when looking up or upside down - but even then its not a problem to breath, just not as comfortable. The key to the rEvo is how close the CLs are to your own lungs. As with anything new, there is an adjustment period, but most technical divers adapt fairly readily to new equipment and skills with the proper training and practice. Just my limited experience from a new CCR diver. __________________ SDTechDiving.com - A San Diego Technical Diving Community
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