IDA 71 in NZ

GKAM · 18th February 2008, 04:52

Quote: (Originally Posted by Packhorse)

Your rig looks good GKAM. Are those 2L steel tanks?

Anyway I am thinking of doing my conversion in stages.

Yeap, these are 2L/200BAR steel tanks w/ small conical neck thread. They are used for medical oxygen - I got them new for 30EUR each from a dealer with medical supplies. I never told them what I needed them for.

The valves were another 25EUR each so for the amazing price of 110EUR in total, I got me both tanks. I do all the filling myself so there are no issues with my bastardized tanks.

Personally, I would not do the conversion in stages. There is enough information out there to help you design a balanced rig right right from the start. Do some homework, read what is available and decide what is best for you.

My rig has not changed much since day 1. The only difference is that I replaced the backplate with an Oxycheq harness (similar to Transpack) bringing the unit even closer to my back making everything fit like a glove. Very snug and stable fit with better WOB. I also removed the weights from inside the lid because they restricted the CL. Now they sit on my shoulder harness. I use 2x2kg.

I bet you will love your IDA71!

/GKAM

Packhorse · 18th February 2008, 07:22

How did you secure the harness to the shell?
I got a transpac and am thinking of bolting it on or cutting slots in the shell like a back plate and using a hog harness. Either way the harness and wing will not have to be swapped to my OC gear as it is surplus. (the wing not the OC gear....yet

).

I prefer to do it in stages as it would be a large cash outlay for what I want and I dont want to rush things.

GKAM · 18th February 2008, 07:42

[quote=Packhorse;169367]How did you secure the harness to the shell?
I got a transpac and am thinking of bolting it on or cutting slots in the shell like a back plate and using a hog harness. Either way the harness and wing will not have to be swapped to my OC gear as it is surplus. (the wing not the OC gear....yet

).

I used Dave's idea with a few mods. This way I an bolt on almost any option between my old Buddy Commando, a travel backplate to a Transpack/OMS/Oxycheq harness.

Here are some pics to give you an idea:

A cool tip is to add some sacrificial metal (anode) to avoid electrolysis due to the varius dissimilar metals you will end up with on your rig.

This anode is bolted on, and the thread continues on the other side, to make the lower anchoring point for the rig. (You can see it on the previous pictures).

/GKAM

Corallaro · 18th February 2008, 08:24

About the "Killer in the Bag" problem see also this link:

http://www.rebreatherworld.com/home-...nd-time-4.html

Giovanni

Packhorse · 25th February 2008, 01:35

Im thinking of running the exhale hose out of the lung instead of thru it and also blocking off the holes for the second scrubber.
I dont like the idea of parallel scrubbers and I will not be diving the unit deep or long for quite awhile yet. And when I do I will look as building a new scrubber or reinvestigate the parallel scrubber set up.

Anyway whats the best way to block the holes in the lung.
Im thinking or using rubber or neoprene discs and aquasealinging them on.
Will this be OK? should I do it from the inside and outside or is one side enough?
Any reason this will not be reversable?

I have looked at the Y and it has 1 metal clamp. If I was to continue to use the Y I assume a stainless hose clamp is the best fix here?

But what about the other connections? They are all tied on. Is there a better way to do this or is string the way to go?
Im guessing hose clamps are not practrical due to the way the rubber fittings push back into the lung and may rub against the rubber. Any suggestions?

kiwi_diver · 25th February 2008, 02:56

Aquaseal patches sound fine if you go so far as to cut out the fittings. Else leave the fittings in and use expanding rubber bungs to block them or have caps made up in delrin or brass.

I've used cable ties to re-clamp my scrubber fittings to the counterlung. Just put a couple turns of insulation tape over the tie to protect the lung from the lock-blob thing.

Sorry, haven't found that external Y-hose fitting site again but perhaps you have?

Later,

**SeaBass** · 25th February 2008, 03:57

Quote: (Originally Posted by GKAM)

The rig balances nicely in the water as you can see here and here.

Look here for more fun stuff.

Classic.

osiris · 25th February 2008, 09:01

Quote: (Originally Posted by Packhorse)

Im thinking of running the exhale hose out of the lung instead of thru it and also blocking off the holes for the second scrubber.
I dont like the idea of parallel scrubbers and I will not be diving the unit deep or long for quite awhile yet. And when I do I will look as building a new scrubber or reinvestigate the parallel scrubber set up.

Anyway whats the best way to block the holes in the lung.
Im thinking or using rubber or neoprene discs and aquasealinging them on.
Will this be OK? should I do it from the inside and outside or is one side enough?
Any reason this will not be reversable?

I have looked at the Y and it has 1 metal clamp. If I was to continue to use the Y I assume a stainless hose clamp is the best fix here?

But what about the other connections? They are all tied on. Is there a better way to do this or is string the way to go?
Im guessing hose clamps are not practrical due to the way the rubber fittings push back into the lung and may rub against the rubber. Any suggestions?

Havew you thought about replacing the steel clamp with a ssone and leaving ti as it is?
being rubber the CL will work pretty well if you use a puncture repair kit to seal it off. that and heat was how they mad ethem in the first place....

Packhorse · 25th February 2008, 17:46

Yes I have. And I may still do that. Just looking at all the options.

Was good to see you guys at Global last night.

Packhorse · 4th March 2008, 08:49

Had a little progress over the last week.

I have bolted a transpac harness and DR SportwingsII 44lb wing to the IDA. I was a little worried about galvanic corrosion so I used some rubber on either side of the IDA and taped up the thread on the SS bolts.
No metal to metal contact= no galvanic corossion right???

I also stripped out some unrequired stuff in the case.
The comms bracket, lower harness points and also the frame work that held the left scrubber. I had to remove the whole frame/ribs to do this then cut it down and revited it back in.

The "Y" connector on the exhale side only has 1 of those metal clamps. Almost every picture I have seen of these is diffrent. Some have 2 or 3 some have none. I havent done anything with it yet as I am still deciding if I should have the exhale hose outside the lung. I will have to do some tests to see how much it effects volume.

The ADV is all metal unlike others I have seen that use alot of plastic.

When it comes to servicing of the regs where are people sourcing parts like seats and diaphrams etc?

Anyway a few pics of the progress.

18th February 2008, 04:52	#11 (permalink)
GKAM digital nomad Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: May 2005 Location: Greece Posts: 252	Re: IDA 71 in NZ Quote: (Originally Posted by Packhorse) Your rig looks good GKAM. Are those 2L steel tanks? Anyway I am thinking of doing my conversion in stages. Yeap, these are 2L/200BAR steel tanks w/ small conical neck thread. They are used for medical oxygen - I got them new for 30EUR each from a dealer with medical supplies. I never told them what I needed them for. The valves were another 25EUR each so for the amazing price of 110EUR in total, I got me both tanks. I do all the filling myself so there are no issues with my bastardized tanks. Personally, I would not do the conversion in stages. There is enough information out there to help you design a balanced rig right right from the start. Do some homework, read what is available and decide what is best for you. My rig has not changed much since day 1. The only difference is that I replaced the backplate with an Oxycheq harness (similar to Transpack) bringing the unit even closer to my back making everything fit like a glove. Very snug and stable fit with better WOB. I also removed the weights from inside the lid because they restricted the CL. Now they sit on my shoulder harness. I use 2x2kg. I bet you will love your IDA71! /GKAM __________________ Stay #
(Offline)

18th February 2008, 07:22	#12 (permalink)
Packhorse Custom Title Allowed! Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Jan 2008 Location: Auckland New Zealand Posts: 103	Re: IDA 71 in NZ How did you secure the harness to the shell? I got a transpac and am thinking of bolting it on or cutting slots in the shell like a back plate and using a hog harness. Either way the harness and wing will not have to be swapped to my OC gear as it is surplus. (the wing not the OC gear....yet ). I prefer to do it in stages as it would be a large cash outlay for what I want and I dont want to rush things. __________________ There are no stupid questions, but there are a LOT of inquisitive idiots.
(Offline)

18th February 2008, 07:42	#13 (permalink)
GKAM digital nomad Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: May 2005 Location: Greece Posts: 252	Re: IDA 71 in NZ [quote=Packhorse;169367]How did you secure the harness to the shell? I got a transpac and am thinking of bolting it on or cutting slots in the shell like a back plate and using a hog harness. Either way the harness and wing will not have to be swapped to my OC gear as it is surplus. (the wing not the OC gear....yet ). I used Dave's idea with a few mods. This way I an bolt on almost any option between my old Buddy Commando, a travel backplate to a Transpack/OMS/Oxycheq harness. Here are some pics to give you an idea: A cool tip is to add some sacrificial metal (anode) to avoid electrolysis due to the varius dissimilar metals you will end up with on your rig. This anode is bolted on, and the thread continues on the other side, to make the lower anchoring point for the rig. (You can see it on the previous pictures). /GKAM __________________ Stay #
(Offline)

18th February 2008, 08:24	#14 (permalink)
Corallaro IDA-71,IDA-76,NaubosAR90 Current Rebreather/s: Other CCR Other Rebreather/s: Not Bought Yet Other CCR Join Date: Oct 2006 Location: Italia - Sicilia Posts: 240	Re: IDA 71 in NZ About the "Killer in the Bag" problem see also this link: http://www.rebreatherworld.com/home-...nd-time-4.html Giovanni
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25th February 2008, 01:35	#15 (permalink)
Packhorse Custom Title Allowed! Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Jan 2008 Location: Auckland New Zealand Posts: 103	Re: IDA 71 in NZ Im thinking of running the exhale hose out of the lung instead of thru it and also blocking off the holes for the second scrubber. I dont like the idea of parallel scrubbers and I will not be diving the unit deep or long for quite awhile yet. And when I do I will look as building a new scrubber or reinvestigate the parallel scrubber set up. Anyway whats the best way to block the holes in the lung. Im thinking or using rubber or neoprene discs and aquasealinging them on. Will this be OK? should I do it from the inside and outside or is one side enough? Any reason this will not be reversable? I have looked at the Y and it has 1 metal clamp. If I was to continue to use the Y I assume a stainless hose clamp is the best fix here? But what about the other connections? They are all tied on. Is there a better way to do this or is string the way to go? Im guessing hose clamps are not practrical due to the way the rubber fittings push back into the lung and may rub against the rubber. Any suggestions? __________________ There are no stupid questions, but there are a LOT of inquisitive idiots.
(Offline)

25th February 2008, 02:56	#16 (permalink)
kiwi_diver Alias - Ray Mansell Current Rebreather/s: Other SCR Other Rebreather/s: Other SCR Join Date: Aug 2007 Location: Auckland, New Zealand Posts: 157	Re: IDA 71 in NZ Aquaseal patches sound fine if you go so far as to cut out the fittings. Else leave the fittings in and use expanding rubber bungs to block them or have caps made up in delrin or brass. I've used cable ties to re-clamp my scrubber fittings to the counterlung. Just put a couple turns of insulation tape over the tie to protect the lung from the lock-blob thing. Sorry, haven't found that external Y-hose fitting site again but perhaps you have? Later, __________________ Ray. == Latitude 36 South, where the deeper you dive, the warmer it gets! ==
(Offline)

25th February 2008, 03:57	#17 (permalink)
SeaBass Thom Susko Current Rebreather/s: Megalodon Ray Home Build Other Rebreather/s: Not Bought Yet Ray Home Build Join Date: Jul 2006 Location: San Clemente, CA Posts: 232	Re: IDA 71 in NZ Quote: (Originally Posted by GKAM) The rig balances nicely in the water as you can see here and here. Look here for more fun stuff. Classic.
(Offline)

25th February 2008, 09:01	#18 (permalink)
osiris Custom Title Allowed! Current Rebreather/s: Inspiration Classic Sport Kiss Home Build Other Rebreather/s: Home Build Join Date: Feb 2006 Location: Auckland Posts: 320	Re: IDA 71 in NZ Quote: (Originally Posted by Packhorse) Im thinking of running the exhale hose out of the lung instead of thru it and also blocking off the holes for the second scrubber. I dont like the idea of parallel scrubbers and I will not be diving the unit deep or long for quite awhile yet. And when I do I will look as building a new scrubber or reinvestigate the parallel scrubber set up. Anyway whats the best way to block the holes in the lung. Im thinking or using rubber or neoprene discs and aquasealinging them on. Will this be OK? should I do it from the inside and outside or is one side enough? Any reason this will not be reversable? I have looked at the Y and it has 1 metal clamp. If I was to continue to use the Y I assume a stainless hose clamp is the best fix here? But what about the other connections? They are all tied on. Is there a better way to do this or is string the way to go? Im guessing hose clamps are not practrical due to the way the rubber fittings push back into the lung and may rub against the rubber. Any suggestions? Havew you thought about replacing the steel clamp with a ssone and leaving ti as it is? being rubber the CL will work pretty well if you use a puncture repair kit to seal it off. that and heat was how they mad ethem in the first place....
(Offline)

25th February 2008, 17:46	#19 (permalink)
Packhorse Custom Title Allowed! Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Jan 2008 Location: Auckland New Zealand Posts: 103	Re: IDA 71 in NZ Yes I have. And I may still do that. Just looking at all the options. Was good to see you guys at Global last night. __________________ There are no stupid questions, but there are a LOT of inquisitive idiots.
(Offline)

4th March 2008, 08:49	#20 (permalink)
Packhorse Custom Title Allowed! Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Jan 2008 Location: Auckland New Zealand Posts: 103	Re: IDA 71 in NZ Had a little progress over the last week. I have bolted a transpac harness and DR SportwingsII 44lb wing to the IDA. I was a little worried about galvanic corrosion so I used some rubber on either side of the IDA and taped up the thread on the SS bolts. No metal to metal contact= no galvanic corossion right??? I also stripped out some unrequired stuff in the case. The comms bracket, lower harness points and also the frame work that held the left scrubber. I had to remove the whole frame/ribs to do this then cut it down and revited it back in. The "Y" connector on the exhale side only has 1 of those metal clamps. Almost every picture I have seen of these is diffrent. Some have 2 or 3 some have none. I havent done anything with it yet as I am still deciding if I should have the exhale hose outside the lung. I will have to do some tests to see how much it effects volume. The ADV is all metal unlike others I have seen that use alot of plastic. When it comes to servicing of the regs where are people sourcing parts like seats and diaphrams etc? Anyway a few pics of the progress. __________________ There are no stupid questions, but there are a LOT of inquisitive idiots.
(Offline)

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