EDO 04 Breakdown

londonsean69 · 6th June 2005, 16:51

Quote: (Originally Posted by Ali)

Brilliant article. I have been using my EDO for shallow dives but plan on trimix soon. As soon as I get all my things sorted out, I will post some pictures for all to see. I have just finished the EKPP style bracket at work. It waiting to be polished but looks brilliant. I have also built a sea water proof switch block as the one supplied with the EDO is AL. Not ideal if you have water coming in.

Ali

Thanks for the kind words.
I am still thinking of making a frame for it, as well as a manifold, but for the moment I am not bothered.

I use my EDO in saltwater and am also worried about the AL corroding. I might have a new block made from SS, or maybe Titanium

. I also want to make the block more like the RB80 version, because the hose routing is better.

For now, I am just logging a few dives on it (will be lots in Lanzarote - unless I have lots of dive work).

If you have any pictures, please e-mail them to me, and I will put them on my website (in my signature)

Cheers

***EBT*** · 6th June 2005, 19:09

Quote: (Originally Posted by londonsean69)

I use my EDO in saltwater and am also worried about the AL corroding. I might have a new block made from SS, or maybe Titanium

.

Will sir be plugging his oxygen rich deco mix into this block? Can I watch, I like fireworks!!

(titanium burns quite readily with hyperbaric O2)

/Zak

***Decodiver*** · 6th June 2005, 19:29

Quote: (Originally Posted by londonsean69)

I might have a new block made from SS, or maybe Titanium

.

Christ on a bike. Put yer goggles on then blast off.

Do not put O2 through Titanium, unless you want to die.

Cheers,

Dave Cooper.

londonsean69 · 9th June 2005, 04:53

Quote: (Originally Posted by wreckweasel)

Will sir be plugging his oxygen rich deco mix into this block? Can I watch, I like fireworks!!

(titanium burns quite readily with hyperbaric O2)

/Zak

Do you know what, I totally forgot about that

I was just typing and remembered what luvverly stuff TI was. I just plain forgot it loves a little O2 fire.

Which is why all these posh TI regs say 'Not for Nitox use'

. How dumb of me.

Maybe I'll stick with SS.

As an aside, does anyone know just what conditions are required for an O2/TI fire to get going (I'm not planning to find out).

Cheers (Embarrassed as hell for such a donut mistake)

mapko · 9th June 2005, 09:24

Quote: (Originally Posted by Marvintpa)

schford, two quick question for ya: what is your primary safety concern diving this unit? ie. what do you perceive to be it's greatest weakness/shortcoming?

Are you planning to fit an O2 sensor? Some say it's not of much value on this style of Rebreather.

Hi Marvintpa
You are true, i dived EDO04 form many months without any sensor, only using an EXCEL file that tell me which gas I have into the loop at various depth.
I put an oxy cell when I started to use trimix and VR3, but still using the EXCEL sheet to plan gasses.

-marco

lizardland · 9th June 2005, 09:36

Quote: (Originally Posted by londonsean69)

Do you know what, I totally forgot about that

I was just typing and remembered what luvverly stuff TI was. I just plain forgot it loves a little O2 fire.

Which is why all these posh TI regs say 'Not for Nitox use'

. How dumb of me.

Maybe I'll stick with SS.

As an aside, does anyone know just what conditions are required for an O2/TI fire to get going (I'm not planning to find out).

Cheers (Embarrassed as hell for such a donut mistake)

Even stainless isn't necessarily O2 compatible.

Why not use brass? As in these gizmoes that I used on my homebuilds:

https://secure.thorite.co.uk/Product...read__435.html

montyg · 9th June 2005, 09:48

Quote: (Originally Posted by lizardland)

The biggest weakness I found with it (the reason I did not buy one) was the size of the counterlung. I Stuart

Please excuse all the third hand "someone said so" below but I don't have first hand experience here and I am trying to find out ...

I am very curious about work of breathing on this unit since the counterlung is below the scrubber and thus quite low on the back. From what I've been told about the RB80 ( and I believe the EDO is very similar ) is that in a head down position people sometimes have to use the OC/CC DSV because WOB is very hard.

I've also read some allegations that it works fine for scootering with a 'heads up' attitude because the bellows are located favourably in relation to the lung centroid in that attitude.

There's some talk about the elasticity of the counterlung being teaked in a way that eases WOB ?

It would be much apprecaited if anybody can disspell some roumors here and seperate the facts and fiction.

rgds
monty

lizardland · 9th June 2005, 10:41

The work of breathing if you are talking simply about moving gas in and out I thought was comparable to other backmounted lung RBs I've used once you find the right position. What I found tiring was when the lung bottoms out and you have a second of resistance when the injectors fire. It's like trying to suck on a regulator with 3ft of garden hose between you and the mouthpiece. That is where the real breathing effort is. As this comes at the bottom of the inhale where I feel my diaphragm is at its weakest I didn't find it comfortable.

Upright position, I found you got massive gas injections. Head down was quite hard to breathe but also quite hard to maintain position. Neither position left me unable to breathe.

Like any rebreather, there is no one perfect option that will do everything. The RB80 (and derivatives) was designed for big, open deep European caves which tend to stay at one depth for a long time. For this it is perfect.

londonsean69 · 11th June 2005, 12:03

Quote: (Originally Posted by montyg)

Please excuse all the third hand "someone said so" below but I don't have first hand experience here and I am trying to find out ...

Well, as both Stuart, Marco and myself all have/have dived the EDO that is quite a bit of first hand info.

Quote: (Originally Posted by montyg)

I am very curious about work of breathing on this unit since the counterlung is below the scrubber and thus quite low on the back. From what I've been told about the RB80 ( and I believe the EDO is very similar ) is that in a head down position people sometimes have to use the OC/CC DSV because WOB is very hard.

If you are head up or head down the position of the counterlung does make breathing very hard, this is why the RB80 comes with an OC/CC DSV, and also why I fitted one to my EDO.

Quote: (Originally Posted by montyg)

I've also read some allegations that it works fine for scootering with a 'heads up' attitude because the bellows are located favourably in relation to the lung centroid in that attitude.

This is because the RB80 was designed for long and deep cave penetrations, where scooters are life support equipment. Think about it, when scootering, the counterlung would be perfectly in line with your lungs, thereby minimising WOB.

Quote: (Originally Posted by montyg)

There's some talk about the elasticity of the counterlung being teaked in a way that eases WOB ?

Ask db8us about this one, he might be able to find out from Reinhard.

***Louby Lou*** · 2nd January 2006, 14:58

Sean's article is back up and running in the library for those who haven't had chance to read it yet - it can be found HERE

Thanks again to Sean

Cheers

Lou

6th June 2005, 16:51	#11 (permalink)
londonsean69 Rebreather World Writer Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Feb 2005 Location: Sunny Lanzaote Posts: 49	Quote: (Originally Posted by Ali) Brilliant article. I have been using my EDO for shallow dives but plan on trimix soon. As soon as I get all my things sorted out, I will post some pictures for all to see. I have just finished the EKPP style bracket at work. It waiting to be polished but looks brilliant. I have also built a sea water proof switch block as the one supplied with the EDO is AL. Not ideal if you have water coming in. Ali Thanks for the kind words. I am still thinking of making a frame for it, as well as a manifold, but for the moment I am not bothered. I use my EDO in saltwater and am also worried about the AL corroding. I might have a new block made from SS, or maybe Titanium . I also want to make the block more like the RB80 version, because the hose routing is better. For now, I am just logging a few dives on it (will be lots in Lanzarote - unless I have lots of dive work). If you have any pictures, please e-mail them to me, and I will put them on my website (in my signature) Cheers __________________ __________________________________ Sean Arrowsmith ---------------------------------- From birth, man carries the weight of gravity on his shoulders. He is bolted to earth. But man has only to sink beneath the surface and he is free. - Jacques Cousteau
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6th June 2005, 19:09	#12 (permalink)
*EBT* Apprentice Luddite Current Rebreather/s: Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Feb 2005 Location: UK, Brighton Posts: 1,995	Quote: (Originally Posted by londonsean69) I use my EDO in saltwater and am also worried about the AL corroding. I might have a new block made from SS, or maybe Titanium . Will sir be plugging his oxygen rich deco mix into this block? Can I watch, I like fireworks!! (titanium burns quite readily with hyperbaric O2) /Zak __________________ Eagles May Soar, but weasels don't get sucked into jet engines! Rebreather World Terms of service Real diving t-shirts for real divers
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6th June 2005, 19:29	#13 (permalink)
*Decodiver* Administrator Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Jan 2005 Location: Geneva Posts: 2,197	Quote: (Originally Posted by londonsean69) I might have a new block made from SS, or maybe Titanium . Christ on a bike. Put yer goggles on then blast off. Do not put O2 through Titanium, unless you want to die. 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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9th June 2005, 04:53	#14 (permalink)
londonsean69 Rebreather World Writer Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Feb 2005 Location: Sunny Lanzaote Posts: 49	Quote: (Originally Posted by wreckweasel) Will sir be plugging his oxygen rich deco mix into this block? Can I watch, I like fireworks!! (titanium burns quite readily with hyperbaric O2) /Zak Do you know what, I totally forgot about that I was just typing and remembered what luvverly stuff TI was. I just plain forgot it loves a little O2 fire. Which is why all these posh TI regs say 'Not for Nitox use' . How dumb of me. Maybe I'll stick with SS. As an aside, does anyone know just what conditions are required for an O2/TI fire to get going (I'm not planning to find out). Cheers (Embarrassed as hell for such a donut mistake) __________________ __________________________________ Sean Arrowsmith ---------------------------------- From birth, man carries the weight of gravity on his shoulders. He is bolted to earth. But man has only to sink beneath the surface and he is free. - Jacques Cousteau
(Offline)

9th June 2005, 09:24	#15 (permalink)
mapko New Member Current Rebreather/s: Other SCR Other Rebreather/s: Other SCR Join Date: May 2005 Location: italy Posts: 14	Quote: (Originally Posted by Marvintpa) schford, two quick question for ya: what is your primary safety concern diving this unit? ie. what do you perceive to be it's greatest weakness/shortcoming? Are you planning to fit an O2 sensor? Some say it's not of much value on this style of Rebreather. Hi Marvintpa You are true, i dived EDO04 form many months without any sensor, only using an EXCEL file that tell me which gas I have into the loop at various depth. I put an oxy cell when I started to use trimix and VR3, but still using the EXCEL sheet to plan gasses. -marco
(Offline)

9th June 2005, 09:36	#16 (permalink)
lizardland Yak Current Rebreather/s: MK 15.X Home Build Other Rebreather/s: Classic Kiss Home Build Join Date: Mar 2005 Location: North... Posts: 1,302	Quote: (Originally Posted by londonsean69) Do you know what, I totally forgot about that I was just typing and remembered what luvverly stuff TI was. I just plain forgot it loves a little O2 fire. Which is why all these posh TI regs say 'Not for Nitox use' . How dumb of me. Maybe I'll stick with SS. As an aside, does anyone know just what conditions are required for an O2/TI fire to get going (I'm not planning to find out). Cheers (Embarrassed as hell for such a donut mistake) Even stainless isn't necessarily O2 compatible. Why not use brass? As in these gizmoes that I used on my homebuilds: https://secure.thorite.co.uk/Product...read__435.html
(Offline)

9th June 2005, 09:48	#17 (permalink)
montyg Monty Guest Current Rebreather/s: Home Build Other Rebreather/s: Home Build Join Date: Feb 2007 Location: Cape Town, South Africa Posts: 229	Quote: (Originally Posted by lizardland) The biggest weakness I found with it (the reason I did not buy one) was the size of the counterlung. I Stuart Please excuse all the third hand "someone said so" below but I don't have first hand experience here and I am trying to find out ... I am very curious about work of breathing on this unit since the counterlung is below the scrubber and thus quite low on the back. From what I've been told about the RB80 ( and I believe the EDO is very similar ) is that in a head down position people sometimes have to use the OC/CC DSV because WOB is very hard. I've also read some allegations that it works fine for scootering with a 'heads up' attitude because the bellows are located favourably in relation to the lung centroid in that attitude. There's some talk about the elasticity of the counterlung being teaked in a way that eases WOB ? It would be much apprecaited if anybody can disspell some roumors here and seperate the facts and fiction. rgds monty
(Offline)

9th June 2005, 10:41	#18 (permalink)
lizardland Yak Current Rebreather/s: MK 15.X Home Build Other Rebreather/s: Classic Kiss Home Build Join Date: Mar 2005 Location: North... Posts: 1,302	The work of breathing if you are talking simply about moving gas in and out I thought was comparable to other backmounted lung RBs I've used once you find the right position. What I found tiring was when the lung bottoms out and you have a second of resistance when the injectors fire. It's like trying to suck on a regulator with 3ft of garden hose between you and the mouthpiece. That is where the real breathing effort is. As this comes at the bottom of the inhale where I feel my diaphragm is at its weakest I didn't find it comfortable. Upright position, I found you got massive gas injections. Head down was quite hard to breathe but also quite hard to maintain position. Neither position left me unable to breathe. Like any rebreather, there is no one perfect option that will do everything. The RB80 (and derivatives) was designed for big, open deep European caves which tend to stay at one depth for a long time. For this it is perfect.
(Offline)

11th June 2005, 12:03	#19 (permalink)
londonsean69 Rebreather World Writer Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Feb 2005 Location: Sunny Lanzaote Posts: 49	Quote: (Originally Posted by montyg) Please excuse all the third hand "someone said so" below but I don't have first hand experience here and I am trying to find out ... Well, as both Stuart, Marco and myself all have/have dived the EDO that is quite a bit of first hand info. Quote: (Originally Posted by montyg) I am very curious about work of breathing on this unit since the counterlung is below the scrubber and thus quite low on the back. From what I've been told about the RB80 ( and I believe the EDO is very similar ) is that in a head down position people sometimes have to use the OC/CC DSV because WOB is very hard. If you are head up or head down the position of the counterlung does make breathing very hard, this is why the RB80 comes with an OC/CC DSV, and also why I fitted one to my EDO. Quote: (Originally Posted by montyg) I've also read some allegations that it works fine for scootering with a 'heads up' attitude because the bellows are located favourably in relation to the lung centroid in that attitude. This is because the RB80 was designed for long and deep cave penetrations, where scooters are life support equipment. Think about it, when scootering, the counterlung would be perfectly in line with your lungs, thereby minimising WOB. Quote: (Originally Posted by montyg) There's some talk about the elasticity of the counterlung being teaked in a way that eases WOB ? Ask db8us about this one, he might be able to find out from Reinhard. __________________ __________________________________ Sean Arrowsmith ---------------------------------- From birth, man carries the weight of gravity on his shoulders. He is bolted to earth. But man has only to sink beneath the surface and he is free. - Jacques Cousteau
(Offline)

2nd January 2006, 14:58	#20 (permalink)
*Louby Lou* XLVI WC! Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Feb 2005 Location: Roman Corinium! Posts: 1,032	Re: EDO 04 Breakdown Sean's article is back up and running in the library for those who haven't had chance to read it yet - it can be found HERE Thanks again to Sean Cheers Lou
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