Depth Rating For Each Type Of CCR

sensor330 · 29th December 2005, 23:09

I re-read and the only article I found were he was diving a inspiration was the one were he first set the record at 182m. That was with original electronics.

***jradomski*** · 29th December 2005, 23:11

Quote: (Originally Posted by Pierre Farrugia)

Dave shaw used HH handsets filled with oil and due to a leak before the dive he still had a problem. About the 180m buzzer problem, if I can recall good about a year or so 3 Germans tried to go past the 180m mark and all 3 units failed at 220m if I am not mistaken! They were even warned by ADP about this! Maybe Mario can say something about this as he was doing a modification!

daves original rig was a stockinspiration..

The HH has no buzzer..

On daves first try with a HH, the only problem he had was a depth calibration issue, which is expected, since the handset wasn't caibrated when it was filled with liquid.

***EBT*** · 29th December 2005, 23:11

Is the question related to mechanical integrity of the unit, its rated depth from certification, or field experience??

AD_ward9 · 30th December 2005, 06:07

Quote: (Originally Posted by DrJM)

Ouroboros

CE tested -120m
emperically tested -182m

boss said beyond -200m

Jerome

I would be very surprised indeed if any rebreather currently available meets the 30mbar WOB limit at 182m or beyond. Can we have the figures?

Cheers
Alex

silent running · 30th December 2005, 07:18

Quote: (Originally Posted by Morg_NZ)

Can someone please post the maximum depth that each type of rebreather

Hello Morg_NZ, can you be more specific? Are you asking what depth the manufacturers rate their units to? Or are you asking what depths they have been dived to? These are 2 different ?s. Manufacturers rate units to certain depths because of liability insurance and training agency liability restrictions. The design limitations of each unit are a separate issue and you have to learn to read btw the lines of manufacturer-speak to discern these... -Andy

TR300 · 30th December 2005, 07:44

Hi,
in my view a CCR itself has no real depth rating (the pressure in the loop is near equal to the ambient pressure).

The limitations are the gimmicks around :-)

Every cable inlet, handset, 1. Stage (e.g. KISS Style) gives mostly the limitations, so the manufacteur test this part or has to hold the specification. (e.g. the IP68 spec. to 10bar).

Next is the EN (CE) approval, there are specs for 40 and 100msw.

Holger

Mdemon · 30th December 2005, 09:59

On a factory tour at APD recently, I mentioned the imploding buzzer thing to Terry and he said that they were still waiting to see the evidence.

spike jackson · 30th December 2005, 12:31

Quote: (Originally Posted by sensor330)

I re-read and the only article I found were he was diving a inspiration was the one were he first set the record at 182m. That was with original electronics.

According to an article written by Don Shirley May 2004 Dave Shaw had an implosion of his buzzer on his Inspo at 180m.

Checked Dave Shaw's website - he did two previous dives in Boesmansgat on the Mk 15.5 with an oil-filled Hammerhead - June 2004 to 219m and October 2004 to 270m. It was the October dive where he found the body.

Mario · 31st December 2005, 14:10

Quote: (Originally Posted by Pierre Farrugia)

Dave shaw used HH handsets filled with oil and due to a leak before the dive he still had a problem. About the 180m buzzer problem, if I can recall good about a year or so 3 Germans tried to go past the 180m mark and all 3 units failed at 220m if I am not mistaken! They were even warned by ADP about this! Maybe Mario can say something about this as he was doing a modification!

Yes, the German guys haved 2 differents problems:
the Inspo Buzzer has a dry sealed chamber (impossible to fill with any kind of liquid, I haved open one of this!) that collapse under the pressure and generates a shortcircuit.

The other problems was that at about under -220mt depth (23bar) its impossible to read the handsets because the pressure crush the liquidcristal display.

Now, I have modified mi inspo buzzer with a new kind of non sealed electronics buzzer (avoid pietzoelectric buzzer, because they products sparks!!!) in a new buzzerbox!

Ciao
Mario

Mdemon · 31st December 2005, 19:37

Quote: (Originally Posted by Mario)

The other problems was that at about under -220mt depth (23bar) its impossible to read the handsets because the pressure crush the liquidcristal display.

I guess a HUD would be useful then!

29th December 2005, 23:09	#11 (permalink)
sensor330 Custom Title Allowed! Current Rebreather/s: Megalodon Other Rebreather/s: Not Bought Yet Inspiration Classic Join Date: Feb 2005 Location: Victoria, British Columbia, Canada Posts: 583	Re: Depth Rating For Each Type Of CCR I re-read and the only article I found were he was diving a inspiration was the one were he first set the record at 182m. That was with original electronics.
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29th December 2005, 23:11	#12 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Home Build Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Home Build Join Date: Mar 2005 Location: "Da" Bronx Posts: 3,001	Re: Depth Rating For Each Type Of CCR Quote: (Originally Posted by Pierre Farrugia) Dave shaw used HH handsets filled with oil and due to a leak before the dive he still had a problem. About the 180m buzzer problem, if I can recall good about a year or so 3 Germans tried to go past the 180m mark and all 3 units failed at 220m if I am not mistaken! They were even warned by ADP about this! Maybe Mario can say something about this as he was doing a modification! daves original rig was a stockinspiration.. The HH has no buzzer.. On daves first try with a HH, the only problem he had was a depth calibration issue, which is expected, since the handset wasn't caibrated when it was filled with liquid. __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
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29th December 2005, 23:11	#13 (permalink)
*EBT* Apprentice Luddite Current Rebreather/s: Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Feb 2005 Location: UK, Brighton Posts: 1,969	Re: Depth Rating For Each Type Of CCR Is the question related to mechanical integrity of the unit, its rated depth from certification, or field experience?? __________________ 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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30th December 2005, 06:07	#14 (permalink)
AD_ward9 So much more to learn Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Jun 2005 Location: Scotland Posts: 1,862	Re: Depth Rating For Each Type Of CCR Quote: (Originally Posted by DrJM) Ouroboros CE tested -120m emperically tested -182m boss said beyond -200m Jerome I would be very surprised indeed if any rebreather currently available meets the 30mbar WOB limit at 182m or beyond. Can we have the figures? Cheers Alex
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30th December 2005, 07:18	#15 (permalink)
silent running Mature mouth breather Current Rebreather/s: Prism Topaz Other Rebreather/s: Join Date: Jun 2005 Location: U.S.A. Brooklyn, New York Posts: 1,832	Re: Depth Rating For Each Type Of CCR Quote: (Originally Posted by Morg_NZ) Can someone please post the maximum depth that each type of rebreather Hello Morg_NZ, can you be more specific? Are you asking what depth the manufacturers rate their units to? Or are you asking what depths they have been dived to? These are 2 different ?s. Manufacturers rate units to certain depths because of liability insurance and training agency liability restrictions. The design limitations of each unit are a separate issue and you have to learn to read btw the lines of manufacturer-speak to discern these... -Andy
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30th December 2005, 07:44	#16 (permalink)
TR300 Holger Berghäuser Current Rebreather/s: Other CCR Dolphin Other SCR Home Build Other Rebreather/s: Not Bought Yet Other CCR Dolphin Other SCR Home Build Join Date: Jan 2005 Location: Weinheim, Germany Posts: 208	Re: Depth Rating For Each Type Of CCR Hi, in my view a CCR itself has no real depth rating (the pressure in the loop is near equal to the ambient pressure). The limitations are the gimmicks around :-) Every cable inlet, handset, 1. Stage (e.g. KISS Style) gives mostly the limitations, so the manufacteur test this part or has to hold the specification. (e.g. the IP68 spec. to 10bar). Next is the EN (CE) approval, there are specs for 40 and 100msw. Holger __________________ If it makes bubbles it means its brocken Visit: www.tr300.com, Missions: www.rebreatherteam.de
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30th December 2005, 09:59	#17 (permalink)
Mdemon SiegeEngine II Current Rebreather/s: Inspiration Classic Home Build Other Rebreather/s: Inspiration Classic Home Build Join Date: Feb 2007 Location: SWUK Posts: 1,926	Re: Depth Rating For Each Type Of CCR On a factory tour at APD recently, I mentioned the imploding buzzer thing to Terry and he said that they were still waiting to see the evidence. __________________ www.southwestmafia.com "small minds talk about people, Average Minds Talk About Events, GREAT MINDS TALK ABOUT IDEAS!" The WRONG Attitude will get you killed. "Once the agenda-monkeys and perfect-worlders have moved on, perhaps we can do some diving?"
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30th December 2005, 12:31	#18 (permalink)
spike jackson New Member Current Rebreather/s: Classic Kiss Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Apr 2005 Posts: 28	Re: Depth Rating For Each Type Of CCR Quote: (Originally Posted by sensor330) I re-read and the only article I found were he was diving a inspiration was the one were he first set the record at 182m. That was with original electronics. According to an article written by Don Shirley May 2004 Dave Shaw had an implosion of his buzzer on his Inspo at 180m. Checked Dave Shaw's website - he did two previous dives in Boesmansgat on the Mk 15.5 with an oil-filled Hammerhead - June 2004 to 219m and October 2004 to 270m. It was the October dive where he found the body. Last edited by spike jackson : 30th December 2005 at 12:42. Reason: added more info
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31st December 2005, 14:10	#19 (permalink)
Mario New Member Current Rebreather/s: Ouroboros Other Rebreather/s: Inspiration Classic Ouroboros Join Date: Aug 2005 Location: Rome Posts: 48	Re: Depth Rating For Each Type Of CCR Quote: (Originally Posted by Pierre Farrugia) Dave shaw used HH handsets filled with oil and due to a leak before the dive he still had a problem. About the 180m buzzer problem, if I can recall good about a year or so 3 Germans tried to go past the 180m mark and all 3 units failed at 220m if I am not mistaken! They were even warned by ADP about this! Maybe Mario can say something about this as he was doing a modification! Yes, the German guys haved 2 differents problems: the Inspo Buzzer has a dry sealed chamber (impossible to fill with any kind of liquid, I haved open one of this!) that collapse under the pressure and generates a shortcircuit. The other problems was that at about under -220mt depth (23bar) its impossible to read the handsets because the pressure crush the liquidcristal display. Now, I have modified mi inspo buzzer with a new kind of non sealed electronics buzzer (avoid pietzoelectric buzzer, because they products sparks!!!) in a new buzzerbox! Ciao Mario __________________ Mario http://www.rebreatherworld.com/images/smilies/demon.gif
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31st December 2005, 19:37	#20 (permalink)
Mdemon SiegeEngine II Current Rebreather/s: Inspiration Classic Home Build Other Rebreather/s: Inspiration Classic Home Build Join Date: Feb 2007 Location: SWUK Posts: 1,926	Re: Depth Rating For Each Type Of CCR Quote: (Originally Posted by Mario) The other problems was that at about under -220mt depth (23bar) its impossible to read the handsets because the pressure crush the liquidcristal display. I guess a HUD would be useful then! __________________ www.southwestmafia.com "small minds talk about people, Average Minds Talk About Events, GREAT MINDS TALK ABOUT IDEAS!" The WRONG Attitude will get you killed. "Once the agenda-monkeys and perfect-worlders have moved on, perhaps we can do some diving?"
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