IDA-71 MOD and time

GKAM · 16th January 2007, 12:31

Quote: (Originally Posted by GKAM)

Hi Corallaro,

How deep do you intend to use your unit? The RGU regulator stops flowing at around 30m. Also, the current setup leaves the O2 side too exposed for my liking. Not very robust for everyday diving.

Keeping 2 scrubbers but using an IP limited regulator kind of defeats the purpose. Also, your fittings for refilling the bottles are non-standard.

IMHO, Dave is correct in that you should either keep 2 scrubbers plus the O2 tank and add offboard DIL for deeper dives (>50m) or use a single scrubber with onboard 1.5-2L tanks.

Perhaps you could consider using a kiss or needle valve if you want to dive the rig deeper than 20-30m.

/GKAM

PS: I also just noticed your scubbers are installed the wrong way. They still work, but gunk will collect in a manner that is difficult to remove.

**Dave Sutton** · 16th January 2007, 12:33

Yes, I missed this. The welded seams go to the bottom of the chassis.

Dave

Corallaro · 16th January 2007, 13:48

Hi Dave
Hi GKAM

this is a first prototype and i use what i have at the moment, the triple oxygen circuit display don't also have a case for example....

I think to install scubbers in the wrong way to have a minimal water trap
(aka 60 scrubber is intalled in the "wrong way") and i think to modify, for the future, scrubbers add an hose or a one way valve to descharge water

for o2 circuit my goal is an 1,5 liters o2 tank with a sealed fist stage and a kiss style injection...i wait orifices from mcmastercarr via a friend of my friend ecc ecc..or if i found a lot of money apeks ds4 and hydrogom valve

my final idea is two scrubbers and two 1.5 litres tank (diluent and oxygen) and external tank for deeper dives and good bailout and drysuit...

i want to go deep.....

Giovanni

PS
anyone can send a photo of modified t-piece clamp into counterlng?

AKA 60 scheme

Corallaro · 16th January 2007, 14:43

PPS for Dave...

can you send me the address/link for german o2 1,5 litres bottle?

regs

Giovanni

Skipbreather · 16th January 2007, 16:16

Quote: (Originally Posted by Corallaro)

c) the oxygen circuit and diluent circuit, note I leave the quick connect only for diluent circuit so i have an internal 1,5 litres tank and I attach, for example, my old three litres tank, if i empty the external bottle diluent....in emergency..I disconnect it and remain the 1,5 litres internal bottle of reserve..
in the hose from diluent bottle an quick connect i insert a multiple T piece with two out, one for wings and one for bailout second stage

Hi Corallaro-

If you set things up this way do not overlook the shuttle valve integral to the off board connector. Recall that in the original Russian configuration the on board O2 bottle had the output pressure of its 1st stage reg adjusted to 2 or 3 bar below the output pressure of the 1st stage of the offboard nitrox bottle. The shuttle valve will, as designed, select whichever source has the higher pressure to feed the ADV. In you case the most straightforward solution would be to turn on the dil bottle valve you want to feed the ADV and make sure the other one is turned off. You might otherwise be in for a rude surprise. You wing feeding T piece would need relocation.

I fully understand using what’s on hand to build stuff. If you’re going to be using the RGUFM reg on a regular basis for a while, this link might prove useful:

RGU REGULATOR BREAKDOWN

Ken

Corallaro · 17th January 2007, 07:45

Hi Ken

you are right!

the t piece, as i think, is'nt in a correct location if i use an external bottle...

tnx

for the rgufm an 1 liter bottle is a temporary solution

Giovanni

**fireman** · 17th January 2007, 14:52

Just a heads up with the Russian RBs. I got the valve off one of my IDA cylinders, and there was a lot of crap inside. Dirt, bits of metal from tapping and the bottom, inside of the threads has some burr on them. If one plans on using them or especially putting O2 you better take a look. Also W+S sells adapters for these valves and replacement din valves. The tube fittings have 1/4" bspp fittings, you can get adapters from McMaster Carr. I had to drill the male one out a little though.

jmhardingjr · 17th January 2007, 15:26

Fireman,

Which fittings are you calling the tube fittings? Do you mean the outlet ports? Could you post a pic to clarify?

Thanks.

**fireman** · 17th January 2007, 17:44

Sure I'm talking about tapping into the plumbing on the aka-60, which is roughly 1/4" stainless tube with silver soldered compression ends, with 1/4 BSPP threads on them.

Take something like MC4936K119, 1/4x1/4 male bspp by female npt. I chucked it up and drilled out the center hole on the male side and screwed it into part of the rebreather plumbing. My fill station has QC with 1/4 npt fittings.

Pictures comming later.

jmhardingjr · 17th January 2007, 18:02

Sorry, mate. We were talking about different things. Would still like to see pics though.

Cheers.

16th January 2007, 12:31	#21 (permalink)
GKAM digital nomad Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: May 2005 Location: Greece Posts: 254	Re: IDA-71 MOD and time Quote: (Originally Posted by GKAM) Hi Corallaro, How deep do you intend to use your unit? The RGU regulator stops flowing at around 30m. Also, the current setup leaves the O2 side too exposed for my liking. Not very robust for everyday diving. Keeping 2 scrubbers but using an IP limited regulator kind of defeats the purpose. Also, your fittings for refilling the bottles are non-standard. IMHO, Dave is correct in that you should either keep 2 scrubbers plus the O2 tank and add offboard DIL for deeper dives (>50m) or use a single scrubber with onboard 1.5-2L tanks. Perhaps you could consider using a kiss or needle valve if you want to dive the rig deeper than 20-30m. /GKAM PS: I also just noticed your scubbers are installed the wrong way. They still work, but gunk will collect in a manner that is difficult to remove. __________________ Stay #
(Online)

16th January 2007, 12:33	#22 (permalink)
Dave Sutton Diveshop of Horrors Current Rebreather/s: Sport Kiss MK 15.X rEvo Other CCR Azimuth Home Build Other Rebreather/s: Evolution Megalodon rEvo Other CCR Azimuth Home Build Join Date: Jun 2006 Location: Narragansett, Rhode Island and Hackettstown, New Jersey Posts: 2,913	Re: IDA-71 MOD and time Yes, I missed this. The welded seams go to the bottom of the chassis. Dave __________________ "Silent Diving with No Bubbles and No Politics".... www.nobubblediving.com
(Online)

16th January 2007, 14:43	#24 (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: 248	Re: IDA-71 MOD and time PPS for Dave... can you send me the address/link for german o2 1,5 litres bottle? regs Giovanni
(Offline)

16th January 2007, 16:16	#25 (permalink)
Skipbreather Reads the fine print Current Rebreather/s: Megalodon Home Build Other Rebreather/s: Not Bought Yet MK 15.X Home Build Join Date: Mar 2005 Location: Chicago, Illinois, USA Posts: 584	Re: IDA-71 MOD and time Quote: (Originally Posted by Corallaro) c) the oxygen circuit and diluent circuit, note I leave the quick connect only for diluent circuit so i have an internal 1,5 litres tank and I attach, for example, my old three litres tank, if i empty the external bottle diluent....in emergency..I disconnect it and remain the 1,5 litres internal bottle of reserve.. in the hose from diluent bottle an quick connect i insert a multiple T piece with two out, one for wings and one for bailout second stage Hi Corallaro- If you set things up this way do not overlook the shuttle valve integral to the off board connector. Recall that in the original Russian configuration the on board O2 bottle had the output pressure of its 1st stage reg adjusted to 2 or 3 bar below the output pressure of the 1st stage of the offboard nitrox bottle. The shuttle valve will, as designed, select whichever source has the higher pressure to feed the ADV. In you case the most straightforward solution would be to turn on the dil bottle valve you want to feed the ADV and make sure the other one is turned off. You might otherwise be in for a rude surprise. You wing feeding T piece would need relocation. I fully understand using what’s on hand to build stuff. If you’re going to be using the RGUFM reg on a regular basis for a while, this link might prove useful: RGU REGULATOR BREAKDOWN Ken __________________ "Entropy RULES! Enjoy the interim."
(Offline)

17th January 2007, 07:45	#26 (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: 248	Re: IDA-71 MOD and time Hi Ken you are right! the t piece, as i think, is'nt in a correct location if i use an external bottle... tnx for the rgufm an 1 liter bottle is a temporary solution Giovanni
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17th January 2007, 14:52	#27 (permalink)
fireman rEvo combat swimmer Current Rebreather/s: rEvo Other CCR Other Rebreather/s: rEvo Other CCR Join Date: Nov 2006 Location: chicago Posts: 550	Re: IDA-71 MOD and time Just a heads up with the Russian RBs. I got the valve off one of my IDA cylinders, and there was a lot of crap inside. Dirt, bits of metal from tapping and the bottom, inside of the threads has some burr on them. If one plans on using them or especially putting O2 you better take a look. Also W+S sells adapters for these valves and replacement din valves. The tube fittings have 1/4" bspp fittings, you can get adapters from McMaster Carr. I had to drill the male one out a little though.
(Offline)

17th January 2007, 15:26	#28 (permalink)
jmhardingjr Son of a Sailor Current Rebreather/s: Other CCR Home Build Other Rebreather/s: Other CCR Home Build Join Date: Sep 2005 Location: . . . this one particular harbor . . . Posts: 201	Re: IDA-71 MOD and time Fireman, Which fittings are you calling the tube fittings? Do you mean the outlet ports? Could you post a pic to clarify? Thanks. __________________ ". . . the sea's in my veins, my tradition remains, I'm just glad I don't live in a trailer . . ."
(Offline)

17th January 2007, 17:44	#29 (permalink)
fireman rEvo combat swimmer Current Rebreather/s: rEvo Other CCR Other Rebreather/s: rEvo Other CCR Join Date: Nov 2006 Location: chicago Posts: 550	Re: IDA-71 MOD and time Sure I'm talking about tapping into the plumbing on the aka-60, which is roughly 1/4" stainless tube with silver soldered compression ends, with 1/4 BSPP threads on them. Take something like MC4936K119, 1/4x1/4 male bspp by female npt. I chucked it up and drilled out the center hole on the male side and screwed it into part of the rebreather plumbing. My fill station has QC with 1/4 npt fittings. Pictures comming later.
(Offline)

17th January 2007, 18:02	#30 (permalink)
jmhardingjr Son of a Sailor Current Rebreather/s: Other CCR Home Build Other Rebreather/s: Other CCR Home Build Join Date: Sep 2005 Location: . . . this one particular harbor . . . Posts: 201	Re: IDA-71 MOD and time Sorry, mate. We were talking about different things. Would still like to see pics though. Cheers. __________________ ". . . the sea's in my veins, my tradition remains, I'm just glad I don't live in a trailer . . ."
(Offline)

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