IDA 71 in NZ

Packhorse · 15th February 2008, 23:25

Well I have taken delivery of my unused IDA71 with all the spares (except the tool kit?).Of course I have stripped it down and reassembled it 3 or 4 times already so now I have a few questions.

1.Are the plastic covers that go over the ADV and OPV suposed to be removed before diving?

2.What are the scrubbers made of? I read somewhere that they are aluminium but on closer inspection Im thinking plated brass or something.

3.The square scrubber is double skinned. This insulation layer is open to the bottom end of the can. Is this just for heat insulation?

4.My unit is a IDA 71Y. What does the Y denote?

5.I have the spanner that clips to the inside of the shell but some of the paper work shows other tools for removing the OPV ADV etc. Are these standard parts? Anyone got them for sale? or can anyone send me the measurements of them so I can make some?

6.The date of manufacture seems to be 1988 but the tanks seem to be 1977.It came with 3 tanks and regs. The smaller O2 tank as a spare, the 1.5L ali(?) O2 tank installed and the 1.5L nitrox tank. What is the tread of these tanks? Is it worth soucing valves for these? the 2 1.5L tanks are a nice size for use as O2 and dil. I have a luxfer 2L but seems a tight squeeze.

7.Whats the best way to add a wing and harness? The 2 top mounts seem usable but the lower two are to far apart for use with my Diverite sportwing. I supose I could move them in but they are a little to small for 2in webbing.

8.There is alot of extras rivited on to the chassis that I would like to remove. Eg the off board nitrox connection mounts, 2 side D ring mounts, comms mounts, 2 ribs that hold the scrubbers and tank. Are any of these usefull of should I strip them off? Whats the best way to do that?

9.The spares bag has a few diffrent threaded connectors. I assume these are for adaptors for compressors/transfilling or something. One is blocked off with a very fine hole. Is this just a restrictor for the O2 tanks? It has a clear disc in one end??

10.How deep/ long is the square scubber good for?Thanks in advance.PH

**Dave Sutton** · 16th February 2008, 00:25

Plastic covers are not removed. The exhaust valve does not vent where you think it vents.. it vents out of the port on the top. The ADV wold freeflow while swimming in a current or scootering with the cover removed.

Scrubbers are aluminum.

Square scrubber is for a cartridge of stuff. It is heat insulated. You need to add a piece of heavy screen across the end of you use it with powder.

'Y" is the Cyrillic "U". What does it mean? Who knows... but they are all labeled that way.

The tool it consists of cheap-as-shit tools. You will not need any of it. You can use any sort of pin spanner to dissassemble the goodies.

Not surprised that the tanks vary in date. Threads are known as "Kleinkonisch" and are a common Eurpoean thread. GOOD LUCK removing them, as they are virtually welded into the cylinders. I would not bother to try.

Thru Bolt wings on. You'll figure it out.

I'd leave all of the stuff attached to it until you had a defined plan to work the thing.

God only knows what's in the spares kits. If you figure it out, let us know.

The square scrubber, as far as we have been able to figure out, was never for diving, so ?? on it.

Suggest you spend about a week reading every IDA-71 post ever written here. You MUST fix the "Killer in the Bag" problem. There are many good prior posts on these here, so read them all carefully and then you'll find good friends able to help with the details.

You have read about Franken-Rig and Franken-Son? If you study them, you'll have a head start too.

Dave

.

Packhorse · 16th February 2008, 01:52

Thanks Dave. Yes I have read every IDA post on here and most of your (most excellent) site. Its was your franken-rig that got me interested in the IDA. I also have a RGUMF (in need of a tank valve seat if anyone knows where to get one).
On first inspection it looked to me that the plastic covers would seal the ADV and OPV but on closer inspection I see that is not the case.

The square scubber does seem strange as I cant imagine it been used with a oval one due to diffrences in flow resistance, but there isnt any plugs to block off the second scubber if you were to use ib by its self.

kiwi_diver · 17th February 2008, 17:41

I have a toolkit and I think Dave Sherry has one too, most of the tools are just multi-function steel stampings. Imagine a Swiss Army Knife with all the tools folded out at once!

Martin Tolksdorf at TecMe.de sells new Kleinkonisch (tapered) valves with DIN fittings. Dave has a pair coming in. But unless you plan to transfill DIL and boost your own O2, I think you'll end up scrapping most of your innards and just using the counterlung and scrubber. Fit a pair of Faber 2, or at a stretch 3, litre steelies for 02 and DIL so you can get them filled commercially.

Consider mounting that deadly inner Y hose external to the counterlung after replacing the clamps. Patch the holes in the lung, it's just a rubberised fabric. There's a guy whos got some good photos up on that mod and if I can find his site again, I'll get the details to you.

I think you probably have the only 71 here, so that's cool and I'm really looking forward to seeing it in action!

GKAM · 17th February 2008, 19:26

Quote: (Originally Posted by Dave Sutton)

'Y" is the Cyrillic "U". What does it mean? Who knows... but they are all labeled that way.

AFAIK, "Y" reads "U" and stands for "universal" - this is the most common, antimagnetic version for u/w use. A second variant is IDA71-P used by parachutists.

You can take a look at the translated manual here but the diagrams and drawings are on a separate zip file. I also have a scanned copy of the original in Russian but you can also probably get it by asking J.W. Bech.

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

Look here for more fun stuff.

/GKAM

kiwi_diver · 17th February 2008, 21:37

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.

/GKAM

LMAO mate, that's classic.

osiris · 17th February 2008, 22:03

The square scubber does seem strange as I cant imagine it been used with a oval one due to diffrences in flow resistance, but there isnt any plugs to block off the second scubber if you were to use ib by its self.[/quote]

I got one of those with my IDA-64 as well - I wonder if this was to be used in conjunction with the O3 scrubber when using a pre-packed brick of 'sorb as Dave mentions?

**Dave Sutton** · 18th February 2008, 00:14

Quote: (Originally Posted by GKAM)

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

I laughed until I cried.... that's GREAT stuff.

If anyone ever doubts the IDA-71, I'll send them here first.

A Prized "Diver Dave Seal of Approval" for best IDA-71 video to date.

GREAT!!

Dave

.

Packhorse · 18th February 2008, 02:58

I cant open those video links for some reason. Will try again later.
Your rig looks good GKAM. Are those 2L steel tanks?

Anyway I am thinking of doing my conversion in stages.

Stage 1. Fix the Y hose problem, add a CMF oriface and manual add valve, add PPO measurement.
Dive it as a pure O2 rig and get used to it.
Im thinking of mounting the O2 manual add valve to the shell. Perhaps where the existing nitrox tank port is. It would mean less external hoses making for a tidyer rig. Is this a good idea?

Stage 2. Change breathing hoses and DSV, use 2 2L tanks and convert to mCCR down to 20-30 meters max.

Stage 3. Think more about this when I have started stage 2.

Your advice is appreciated.

osiris · 18th February 2008, 04:41

Quote
Stage 1. Fix the Y hose problem, add a CMF oriface and manual add valve, add PPO measurement.

You might not have a Y-hose probelm, check out one of Dav'e previous posts re the different types of clips/ clamps. If you have the tied one's like I have you may not have a problem.

A tool kit should have come with it if it was advertised as "unused" ask Sergey or Stanislavs (sergey seems to ahve dissapeared) what's the story. I ask him about a few missing parts off my unit and he seems to be working his butt off to correct the omission.

15th February 2008, 23:25	#1 (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	IDA 71 in NZ Well I have taken delivery of my unused IDA71 with all the spares (except the tool kit?).Of course I have stripped it down and reassembled it 3 or 4 times already so now I have a few questions. 1.Are the plastic covers that go over the ADV and OPV suposed to be removed before diving? 2.What are the scrubbers made of? I read somewhere that they are aluminium but on closer inspection Im thinking plated brass or something. 3.The square scrubber is double skinned. This insulation layer is open to the bottom end of the can. Is this just for heat insulation? 4.My unit is a IDA 71Y. What does the Y denote? 5.I have the spanner that clips to the inside of the shell but some of the paper work shows other tools for removing the OPV ADV etc. Are these standard parts? Anyone got them for sale? or can anyone send me the measurements of them so I can make some? 6.The date of manufacture seems to be 1988 but the tanks seem to be 1977.It came with 3 tanks and regs. The smaller O2 tank as a spare, the 1.5L ali(?) O2 tank installed and the 1.5L nitrox tank. What is the tread of these tanks? Is it worth soucing valves for these? the 2 1.5L tanks are a nice size for use as O2 and dil. I have a luxfer 2L but seems a tight squeeze. 7.Whats the best way to add a wing and harness? The 2 top mounts seem usable but the lower two are to far apart for use with my Diverite sportwing. I supose I could move them in but they are a little to small for 2in webbing. 8.There is alot of extras rivited on to the chassis that I would like to remove. Eg the off board nitrox connection mounts, 2 side D ring mounts, comms mounts, 2 ribs that hold the scrubbers and tank. Are any of these usefull of should I strip them off? Whats the best way to do that? 9.The spares bag has a few diffrent threaded connectors. I assume these are for adaptors for compressors/transfilling or something. One is blocked off with a very fine hole. Is this just a restrictor for the O2 tanks? It has a clear disc in one end?? 10.How deep/ long is the square scubber good for?Thanks in advance.PH __________________ There are no stupid questions, but there are a LOT of inquisitive idiots. Last edited by Packhorse : 15th February 2008 at 23:33.
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16th February 2008, 00:25	#2 (permalink)
Dave Sutton Diveshop of Horrors Current Rebreather/s: Sport Kiss MK 15.X rEvo Other CCR Azimuth Home Build Other Rebreather/s: Classic Kiss rEvo Other CCR Azimuth Home Build Join Date: Jun 2006 Location: Narragansett, Rhode Island and Hackettstown, New Jersey Posts: 2,671	Re: IDA 71 in NZ Plastic covers are not removed. The exhaust valve does not vent where you think it vents.. it vents out of the port on the top. The ADV wold freeflow while swimming in a current or scootering with the cover removed. Scrubbers are aluminum. Square scrubber is for a cartridge of stuff. It is heat insulated. You need to add a piece of heavy screen across the end of you use it with powder. 'Y" is the Cyrillic "U". What does it mean? Who knows... but they are all labeled that way. The tool it consists of cheap-as-shit tools. You will not need any of it. You can use any sort of pin spanner to dissassemble the goodies. Not surprised that the tanks vary in date. Threads are known as "Kleinkonisch" and are a common Eurpoean thread. GOOD LUCK removing them, as they are virtually welded into the cylinders. I would not bother to try. Thru Bolt wings on. You'll figure it out. I'd leave all of the stuff attached to it until you had a defined plan to work the thing. God only knows what's in the spares kits. If you figure it out, let us know. The square scrubber, as far as we have been able to figure out, was never for diving, so ?? on it. Suggest you spend about a week reading every IDA-71 post ever written here. You MUST fix the "Killer in the Bag" problem. There are many good prior posts on these here, so read them all carefully and then you'll find good friends able to help with the details. You have read about Franken-Rig and Franken-Son? If you study them, you'll have a head start too. Dave . __________________ "Changes in Lattitudes, Changes in Attitudes, Nothing remains quite the same".... www.nobubblediving.com
(Offline)

16th February 2008, 01:52	#3 (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 Thanks Dave. Yes I have read every IDA post on here and most of your (most excellent) site. Its was your franken-rig that got me interested in the IDA. I also have a RGUMF (in need of a tank valve seat if anyone knows where to get one). On first inspection it looked to me that the plastic covers would seal the ADV and OPV but on closer inspection I see that is not the case. The square scubber does seem strange as I cant imagine it been used with a oval one due to diffrences in flow resistance, but there isnt any plugs to block off the second scubber if you were to use ib by its self. __________________ There are no stupid questions, but there are a LOT of inquisitive idiots.
(Offline)

17th February 2008, 17:41	#4 (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 I have a toolkit and I think Dave Sherry has one too, most of the tools are just multi-function steel stampings. Imagine a Swiss Army Knife with all the tools folded out at once! Martin Tolksdorf at TecMe.de sells new Kleinkonisch (tapered) valves with DIN fittings. Dave has a pair coming in. But unless you plan to transfill DIL and boost your own O2, I think you'll end up scrapping most of your innards and just using the counterlung and scrubber. Fit a pair of Faber 2, or at a stretch 3, litre steelies for 02 and DIL so you can get them filled commercially. Consider mounting that deadly inner Y hose external to the counterlung after replacing the clamps. Patch the holes in the lung, it's just a rubberised fabric. There's a guy whos got some good photos up on that mod and if I can find his site again, I'll get the details to you. I think you probably have the only 71 here, so that's cool and I'm really looking forward to seeing it in action! __________________ Ray. == Latitude 36 South, where the deeper you dive, the warmer it gets! == Last edited by kiwi_diver : 17th February 2008 at 18:29.
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17th February 2008, 19:26	#5 (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 Dave Sutton) 'Y" is the Cyrillic "U". What does it mean? Who knows... but they are all labeled that way. AFAIK, "Y" reads "U" and stands for "universal" - this is the most common, antimagnetic version for u/w use. A second variant is IDA71-P used by parachutists. You can take a look at the translated manual here but the diagrams and drawings are on a separate zip file. I also have a scanned copy of the original in Russian but you can also probably get it by asking J.W. Bech. The rig balances nicely in the water as you can see here and here. Look here for more fun stuff. /GKAM __________________ Stay #
(Online)

17th February 2008, 21:37	#6 (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 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. /GKAM LMAO mate, that's classic. __________________ Ray. == Latitude 36 South, where the deeper you dive, the warmer it gets! ==
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17th February 2008, 22:03	#7 (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: 319	Re: IDA 71 in NZ The square scubber does seem strange as I cant imagine it been used with a oval one due to diffrences in flow resistance, but there isnt any plugs to block off the second scubber if you were to use ib by its self.[/quote] I got one of those with my IDA-64 as well - I wonder if this was to be used in conjunction with the O3 scrubber when using a pre-packed brick of 'sorb as Dave mentions?
(Offline)

18th February 2008, 00:14	#8 (permalink)
Dave Sutton Diveshop of Horrors Current Rebreather/s: Sport Kiss MK 15.X rEvo Other CCR Azimuth Home Build Other Rebreather/s: Classic Kiss rEvo Other CCR Azimuth Home Build Join Date: Jun 2006 Location: Narragansett, Rhode Island and Hackettstown, New Jersey Posts: 2,671	Re: IDA 71 in NZ Quote: (Originally Posted by GKAM) The rig balances nicely in the water as you can see here and here. I laughed until I cried.... that's GREAT stuff. If anyone ever doubts the IDA-71, I'll send them here first. A Prized "Diver Dave Seal of Approval" for best IDA-71 video to date. GREAT!! Dave . __________________ "Changes in Lattitudes, Changes in Attitudes, Nothing remains quite the same".... www.nobubblediving.com
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18th February 2008, 02:58	#9 (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 I cant open those video links for some reason. Will try again later. Your rig looks good GKAM. Are those 2L steel tanks? Anyway I am thinking of doing my conversion in stages. Stage 1. Fix the Y hose problem, add a CMF oriface and manual add valve, add PPO measurement. Dive it as a pure O2 rig and get used to it. Im thinking of mounting the O2 manual add valve to the shell. Perhaps where the existing nitrox tank port is. It would mean less external hoses making for a tidyer rig. Is this a good idea? Stage 2. Change breathing hoses and DSV, use 2 2L tanks and convert to mCCR down to 20-30 meters max. Stage 3. Think more about this when I have started stage 2. Your advice is appreciated. __________________ There are no stupid questions, but there are a LOT of inquisitive idiots. Last edited by Packhorse : 18th February 2008 at 03:22.
(Offline)

18th February 2008, 04:41	#10 (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: 319	Re: IDA 71 in NZ Quote Stage 1. Fix the Y hose problem, add a CMF oriface and manual add valve, add PPO measurement. You might not have a Y-hose probelm, check out one of Dav'e previous posts re the different types of clips/ clamps. If you have the tied one's like I have you may not have a problem. A tool kit should have come with it if it was advertised as "unused" ask Sergey or Stanislavs (sergey seems to ahve dissapeared) what's the story. I ask him about a few missing parts off my unit and he seems to be working his butt off to correct the omission.
(Offline)

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