Some new beginners question

Style · 10th May 2007, 21:51

Hi!
My name is Edvin Mellergård and I live in Lysekil on the swedish westcost. Right now I am studying marinbiology at a level compared to upper high school(I guess), next year I will graudate and during that year I will have to do some sort of scienase work. I have scoosen to build a rebreather, first a pretty simple O2 rebreather but built in away that I can easily continue to build in in to a full manually controlled rebreather.

I been hanging around here at rw.com for a couple of weeks searching information before I start building but without knowing much I been mostly confused by the jargong so I hope you guys can help me out with some questions I have.

The basic design I came up with so far is to have the scrubber on the middle of my back with one tank on each side, one for diluent and one for O2, at the first stage where the rebreather is just for O2 the diluent will be bailout gas.

I'll probobly place the counterlungs on the chest at first and maybe later place them on my back as I like having the chest free.

What I wonder about is:

*Can I use PVC or not for the scrubber and other parts? I have read several threads saying I cant and others saying I can. So whats the "thruth"? Would be great if I could as it would keep costs down. If I cant, any other ideas for a cheap material?

*What glue can I use together with pure O2 that doesnt give away any toxic gases? Both for gluing neopren as I intend to use for the counterlungs and to glue together plastic parts for the scrubber and loop?

*I have an idea of using drysuit valves to inflate additional oxygene and diluent in to the system as well as using drysuit outlet valves to get rid of expanding gas, could this work? I really have no idea of how it works on other rebreather(it's the area where I have gotten most confused

).

*Last one for now, is there any good books to read? In most areas there are some books that everyone recommend you to read but so far, I havnt found any at al for Rebreather's.

/Edvin Mellergård

diverklondike · 10th May 2007, 22:04

Edvin,

Welcome to RBW...

If you take a minute to do a quick "search" on PVC within the Home Builder Rebreather forum you should get a pretty good starting point.

Here are the results that I was able to get.

http://www.rebreatherworld.com/searc...archid=1184563

Doing the same with your other questions should yield similar results.

Dive Safe...

Mark

JonnyB · 10th May 2007, 22:07

Hi Edvin, and welcome to RBW!
I have been watching the other thread on Dykarna but i have not answered there.
My first recommendation for you is to find someone that uses Rebreather's and get to know him. Go and have a look at how his unit works etc.
I get the impression from your post that you are not very familiar with how a rebreather works. So for your safety, please get more information before you continue...

I am a bit confised how you will use the diluent, you say you will have a O2 rebreather, then you will have a diluent bottle, but that for bailout and you say you will add diluent manually. Perhaps you are planning ahead to when you will have a mCCR?

To try to answer your questions.
1. I was told PVC will make you sterile....

2. No idea, probably a glue which will not combust in high O2.
3. No problems using drysuit valves for manual addition, i have SI-Tech on my Meg.
4. I would recommend Mastering Rebreathers by Jeff Bozanic, to start

If you are in Stockholm, you can come by and have a look at the Meg.

Good luck

/Jonny

Quote: (Originally Posted by Style)

Hi!
My name is Edvin Mellergård and I live in Lysekil on the swedish westcost. Right now I am studying marinbiology at a level compared to upper high school(I guess), next year I will graudate and during that year I will have to do some sort of scienase work. I have scoosen to build a rebreather, first a pretty simple O2 rebreather but built in away that I can easily continue to build in in to a full manually controlled rebreather.

I been hanging around here at rw.com for a couple of weeks searching information before I start building but without knowing much I been mostly confused by the jargong so I hope you guys can help me out with some questions I have.

The basic design I came up with so far is to have the scrubber on the middle of my back with one tank on each side, one for diluent and one for O2, at the first stage where the rebreather is just for O2 the diluent will be bailout gas.

I'll probobly place the counterlungs on the chest at first and maybe later place them on my back as I like having the chest free.

What I wonder about is:

*Can I use PVC or not for the scrubber and other parts? I have read several threads saying I cant and others saying I can. So whats the "thruth"? Would be great if I could as it would keep costs down. If I cant, any other ideas for a cheap material?

*What glue can I use together with pure O2 that doesnt give away any toxic gases? Both for gluing neopren as I intend to use for the counterlungs and to glue together plastic parts for the scrubber and loop?

*I have an idea of using drysuit valves to inflate additional oxygene and diluent in to the system as well as using drysuit outlet valves to get rid of expanding gas, could this work? I really have no idea of how it works on other rebreather(it's the area where I have gotten most confused

).

*Last one for now, is there any good books to read? In most areas there are some books that everyone recommend you to read but so far, I havnt found any at al for Rebreather's.

/Edvin Mellergård

Style · 11th May 2007, 13:33

Quote: (Originally Posted by JonnyB)

Hi Edvin, and welcome to RBW!
I have been watching the other thread on Dykarna but i have not answered there.
My first recommendation for you is to find someone that uses Rebreather's and get to know him. Go and have a look at how his unit works etc.
I get the impression from your post that you are not very familiar with how a rebreather works. So for your safety, please get more information before you continue...

I am a bit confised how you will use the diluent, you say you will have a O2 rebreather, then you will have a diluent bottle, but that for bailout and you say you will add diluent manually. Perhaps you are planning ahead to when you will have a mCCR?

To try to answer your questions.
1. I was told PVC will make you sterile....

2. No idea, probably a glue which will not combust in high O2.
3. No problems using drysuit valves for manual addition, i have SI-Tech on my Meg.
4. I would recommend Mastering Rebreathers by Jeff Bozanic, to start

If you are in Stockholm, you can come by and have a look at the Meg.

Good luck

/Jonny

Hi!
Thanks for your replies.

I know pretty well the basics of how an rebreather works and I would be able to build one right now but then it would probobly work but it wouldnt be bulletproof as I desire all my creations to be.

My marinbiology teacher, Anders Salesjö is using an Evolution Rebreather and I been planning to ask him if I could have a look at his machine prior to getting started.

Unfortuently he is the only one I know diving a rebreather so I would really appriciate taking a look at your machine. I will be coming up to stockholm the first two weeks after the school has ended for the summer.

About the diluent, first I'll build the amche just for pure O2 and then I'll use the "diluent" bottle just for bailout. And if the machine works properly I'll rebuild it to a manual mCCR and then I take that botle to diluent gas and take an other bottle as bail-out.

JonnyB · 14th May 2007, 07:07

Hi Edvin, i hope all goes well with your project, and give me a call when you come to Stockholm.

/Jonny

Quote: (Originally Posted by Style)

Hi!
Thanks for your replies.

I know pretty well the basics of how an rebreather works and I would be able to build one right now but then it would probobly work but it wouldnt be bulletproof as I desire all my creations to be.

My marinbiology teacher, Anders Salesjö is using an Evolution Rebreather and I been planning to ask him if I could have a look at his machine prior to getting started.

Unfortuently he is the only one I know diving a rebreather so I would really appriciate taking a look at your machine. I will be coming up to stockholm the first two weeks after the school has ended for the summer.

About the diluent, first I'll build the amche just for pure O2 and then I'll use the "diluent" bottle just for bailout. And if the machine works properly I'll rebuild it to a manual mCCR and then I take that botle to diluent gas and take an other bottle as bail-out.

10th May 2007, 21:51	#1 (permalink)
Style New Member Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Apr 2007 Location: Lysekil, Sweden Posts: 9	Some new beginners question Hi! My name is Edvin Mellergård and I live in Lysekil on the swedish westcost. Right now I am studying marinbiology at a level compared to upper high school(I guess), next year I will graudate and during that year I will have to do some sort of scienase work. I have scoosen to build a rebreather, first a pretty simple O2 rebreather but built in away that I can easily continue to build in in to a full manually controlled rebreather. I been hanging around here at rw.com for a couple of weeks searching information before I start building but without knowing much I been mostly confused by the jargong so I hope you guys can help me out with some questions I have. The basic design I came up with so far is to have the scrubber on the middle of my back with one tank on each side, one for diluent and one for O2, at the first stage where the rebreather is just for O2 the diluent will be bailout gas. I'll probobly place the counterlungs on the chest at first and maybe later place them on my back as I like having the chest free. What I wonder about is: Can I use PVC or not for the scrubber and other parts? I have read several threads saying I cant and others saying I can. So whats the "thruth"? Would be great if I could as it would keep costs down. If I cant, any other ideas for a cheap material? What glue can I use together with pure O2 that doesnt give away any toxic gases? Both for gluing neopren as I intend to use for the counterlungs and to glue together plastic parts for the scrubber and loop? I have an idea of using drysuit valves to inflate additional oxygene and diluent in to the system as well as using drysuit outlet valves to get rid of expanding gas, could this work? I really have no idea of how it works on other rebreather(it's the area where I have gotten most confused ). Last one for now, is there any good books to read? In most areas there are some books that everyone recommend you to read but so far, I havnt found any at al for Rebreather's. /Edvin Mellergård
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10th May 2007, 22:04	#2 (permalink)
diverklondike RBW Member Current Rebreather/s: Inspiration Classic Other CCR Other Rebreather/s: Inspiration Classic Other CCR Join Date: Oct 2005 Location: Delaware, USA Posts: 1,714	Re: Some new beginners question Edvin, Welcome to RBW... If you take a minute to do a quick "search" on PVC within the Home Builder Rebreather forum you should get a pretty good starting point. Here are the results that I was able to get. http://www.rebreatherworld.com/searc...archid=1184563 Doing the same with your other questions should yield similar results. Dive Safe... Mark
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10th May 2007, 22:07	#3 (permalink)
JonnyB Johnny The Hatch Current Rebreather/s: MK 15.X Titan Other CCR Other SCR Home Build Other Rebreather/s: Not Bought Yet Inspiration Classic Megalodon Sport Kiss Classic Kiss Other CCR Other SCR Home Build Join Date: Jan 2005 Location: Sweden (Stockholm)/Cyprus(Ayia Napa) Posts: 991	Re: Some new beginners question Hi Edvin, and welcome to RBW! I have been watching the other thread on Dykarna but i have not answered there. My first recommendation for you is to find someone that uses Rebreather's and get to know him. Go and have a look at how his unit works etc. I get the impression from your post that you are not very familiar with how a rebreather works. So for your safety, please get more information before you continue... I am a bit confised how you will use the diluent, you say you will have a O2 rebreather, then you will have a diluent bottle, but that for bailout and you say you will add diluent manually. Perhaps you are planning ahead to when you will have a mCCR? To try to answer your questions. 1. I was told PVC will make you sterile.... 2. No idea, probably a glue which will not combust in high O2. 3. No problems using drysuit valves for manual addition, i have SI-Tech on my Meg. 4. I would recommend Mastering Rebreathers by Jeff Bozanic, to start If you are in Stockholm, you can come by and have a look at the Meg. Good luck /Jonny Quote: (Originally Posted by Style) Hi! My name is Edvin Mellergård and I live in Lysekil on the swedish westcost. Right now I am studying marinbiology at a level compared to upper high school(I guess), next year I will graudate and during that year I will have to do some sort of scienase work. I have scoosen to build a rebreather, first a pretty simple O2 rebreather but built in away that I can easily continue to build in in to a full manually controlled rebreather. I been hanging around here at rw.com for a couple of weeks searching information before I start building but without knowing much I been mostly confused by the jargong so I hope you guys can help me out with some questions I have. The basic design I came up with so far is to have the scrubber on the middle of my back with one tank on each side, one for diluent and one for O2, at the first stage where the rebreather is just for O2 the diluent will be bailout gas. I'll probobly place the counterlungs on the chest at first and maybe later place them on my back as I like having the chest free. What I wonder about is: Can I use PVC or not for the scrubber and other parts? I have read several threads saying I cant and others saying I can. So whats the "thruth"? Would be great if I could as it would keep costs down. If I cant, any other ideas for a cheap material? What glue can I use together with pure O2 that doesnt give away any toxic gases? Both for gluing neopren as I intend to use for the counterlungs and to glue together plastic parts for the scrubber and loop? I have an idea of using drysuit valves to inflate additional oxygene and diluent in to the system as well as using drysuit outlet valves to get rid of expanding gas, could this work? I really have no idea of how it works on other rebreather(it's the area where I have gotten most confused ). Last one for now, is there any good books to read? In most areas there are some books that everyone recommend you to read but so far, I havnt found any at al for Rebreather's. /Edvin Mellergård __________________ A quote from Crazyduck - In remembering our own Rob Davies. "Outbound flight 777 heavy you are cleared for flight Due west into that warm red Texas sunset You have angels on your wings and divers memories on your six." Rest In Peace http://www.divetekcyprus.com http://www.diveccr.com
(Offline)

11th May 2007, 13:33	#4 (permalink)
Style New Member Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Apr 2007 Location: Lysekil, Sweden Posts: 9	Re: Some new beginners question Quote: (Originally Posted by JonnyB) Hi Edvin, and welcome to RBW! I have been watching the other thread on Dykarna but i have not answered there. My first recommendation for you is to find someone that uses Rebreather's and get to know him. Go and have a look at how his unit works etc. I get the impression from your post that you are not very familiar with how a rebreather works. So for your safety, please get more information before you continue... I am a bit confised how you will use the diluent, you say you will have a O2 rebreather, then you will have a diluent bottle, but that for bailout and you say you will add diluent manually. Perhaps you are planning ahead to when you will have a mCCR? To try to answer your questions. 1. I was told PVC will make you sterile.... 2. No idea, probably a glue which will not combust in high O2. 3. No problems using drysuit valves for manual addition, i have SI-Tech on my Meg. 4. I would recommend Mastering Rebreathers by Jeff Bozanic, to start If you are in Stockholm, you can come by and have a look at the Meg. Good luck /Jonny Hi! Thanks for your replies. I know pretty well the basics of how an rebreather works and I would be able to build one right now but then it would probobly work but it wouldnt be bulletproof as I desire all my creations to be. My marinbiology teacher, Anders Salesjö is using an Evolution Rebreather and I been planning to ask him if I could have a look at his machine prior to getting started. Unfortuently he is the only one I know diving a rebreather so I would really appriciate taking a look at your machine. I will be coming up to stockholm the first two weeks after the school has ended for the summer. About the diluent, first I'll build the amche just for pure O2 and then I'll use the "diluent" bottle just for bailout. And if the machine works properly I'll rebuild it to a manual mCCR and then I take that botle to diluent gas and take an other bottle as bail-out.
(Offline)

14th May 2007, 07:07	#5 (permalink)
JonnyB Johnny The Hatch Current Rebreather/s: MK 15.X Titan Other CCR Other SCR Home Build Other Rebreather/s: Not Bought Yet Inspiration Classic Megalodon Sport Kiss Classic Kiss Other CCR Other SCR Home Build Join Date: Jan 2005 Location: Sweden (Stockholm)/Cyprus(Ayia Napa) Posts: 991	Re: Some new beginners question Hi Edvin, i hope all goes well with your project, and give me a call when you come to Stockholm. /Jonny Quote: (Originally Posted by Style) Hi! Thanks for your replies. I know pretty well the basics of how an rebreather works and I would be able to build one right now but then it would probobly work but it wouldnt be bulletproof as I desire all my creations to be. My marinbiology teacher, Anders Salesjö is using an Evolution Rebreather and I been planning to ask him if I could have a look at his machine prior to getting started. Unfortuently he is the only one I know diving a rebreather so I would really appriciate taking a look at your machine. I will be coming up to stockholm the first two weeks after the school has ended for the summer. About the diluent, first I'll build the amche just for pure O2 and then I'll use the "diluent" bottle just for bailout. And if the machine works properly I'll rebuild it to a manual mCCR and then I take that botle to diluent gas and take an other bottle as bail-out. __________________ A quote from Crazyduck - In remembering our own Rob Davies. "Outbound flight 777 heavy you are cleared for flight Due west into that warm red Texas sunset You have angels on your wings and divers memories on your six." Rest In Peace http://www.divetekcyprus.com http://www.diveccr.com
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