ISC posts test data

netmage · 29th March 2008, 23:17

Quote: (Originally Posted by Hyper-limits)

I was told that there are not. I got #537 in July last year. It would be interesting to find the exact number. Most be around 500 to 600 Meg out there.

While certainly not scientifically valid in any sense, 638 RBW members list the Meg as unit owned....

mempilot · 29th March 2008, 23:35

Quote: (Originally Posted by netmage)

...certainly not scientifically valid...

I would imagine many units have changed hands on the used market like yours and mine without getting any mod to profile.

**wedivebc** · 29th March 2008, 23:41

Quote: (Originally Posted by Hyper-limits)

I was told that there are not. I got #537 in July last year. It would be interesting to find the exact number. Most be around 500 to 600 Meg out there.

I think Steve Stolen got can #500 and I was told that was pretty close to production numbers when it was built, about a year ago.

tecdivertraining · 30th March 2008, 00:57

In Jan 2008 I was told by ISC they had over 700 units sold.

netmage · 30th March 2008, 03:03

Quote: (Originally Posted by mempilot)

I would imagine many units have changed hands on the used market like yours and mine without getting any mod to profile.

Still..., even w/ 10-20% turnover the number is up there compared to shipping s/n's..., and we're making the assumption everyone diving a Rebreather is 'plugged into' this community...

~700 just dosn't seem outside the realm of possibility... when other folks are throwing 300-400 around....

mountain diver · 30th March 2008, 05:10

From ISC, always helps to keep things in perspective.

http://www.customrebreathers.com/faq.html

all the best.

AD_ward9 · 30th March 2008, 06:34

Quote: (Originally Posted by netmage)

Still..., even w/ 10-20% turnover the number is up there compared to shipping s/n's..., and we're making the assumption everyone diving a Rebreather is 'plugged into' this community...

~700 just dosn't seem outside the realm of possibility... when other folks are throwing 300-400 around....

The more ISC sell the better. My interest in the ISC numbers is in tracking accident risks, and to a lesser degree the market size growth in sports rebreather diving.

ISC confirmed in writing to a presenter at the British Hyperbaric Society meeting last November that 500 units were out there in October 2007. That ties in with our figures around 350 to 400 ISC RBs that appear to be in use at least once a year.

I need to write a paper on everyone's numbers, and put it on our web site under the accident section. I think everyone is in general agreement except for one mnfr in particular (not ISC).

There is an anomaly that 650 people on Rebreather World claim to have Megs. Some of those are Megs people used to have but sold, some are people who's friend has a Meg that they used a few times, some are duplicate accounts. I think the 350 to 400 in use if a fair number, 500 sold from the time ISC started to Oct 2007 is a fair number, so it could be 600 around about now. 700 though is stretching a bit too far.

I should add that ISC set a very good example in being open with this number, in serial numbering units sequentially and general honesty in this area. CCR Ltd, Steam Machines and others are doing the same. This is an important issue for those tracking safety.

Alex

Rob Dobson · 30th March 2008, 10:25

I bought Meg can #632 in late January this year and the guy I did my course with had can #714 or something around that number so that was 3 months ago.

I would think that can IDs in the #800+ range must be in circulation by now, but some people will own more than one can I guess (I'm looking at getting another one myself).

AD_ward9 · 30th March 2008, 14:30

Quote: (Originally Posted by Rob Dobson)

I bought Meg can #632 in late January this year and the guy I did my course with had can #714 or something around that number so that was 3 months ago.

I would think that can IDs in the #800+ range must be in circulation by now, but some people will own more than one can I guess (I'm looking at getting another one myself).

The units do not seem to leave ISC sequentially: but this shows the batch sizes from ISC have gone up a lot.

Alex

paulraymaekers · 30th March 2008, 17:54

Quote: (Originally Posted by Drmike)

same test equipment/method? Thats very interesting and slightly concerning. Did you contact Kevin and inform him? Did you guys manage to work out why the results vary? Im sure he would change his chart if you could prove his data wrong. What did he say?

the sheets are posted in another treadh

the tests have been done on the very same testing machine!

in tryiing to reproduce the absolutely worst result, we completely taped a unit to prevent as much as possible water flowing in and out the unit... (there are pictures of that test)
even under those circomstances we got +/- 4.7 joule/liter... far less then what kevin reported... (he reported so high that they could not mesure it..)

the currunt units with the 90° elbows in the breathing hose have +/- 3.7 joule/liter, and with straith connectors 3.15

(all data for the 75 l/min, 3 liter tidal at 5bar absolute)

Kevin never commented our results... so either the scrubber must have been flooded when the test was done, or the counterlung completely folded, and blocking the gaspath.. w'll never know

paul

29th March 2008, 23:17	#111 (permalink)
netmage Tim Owens Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Dec 2005 Location: Coconut Creek, FL Posts: 704	Re: ISC posts test data Quote: (Originally Posted by Hyper-limits) I was told that there are not. I got #537 in July last year. It would be interesting to find the exact number. Most be around 500 to 600 Meg out there. While certainly not scientifically valid in any sense, 638 RBW members list the Meg as unit owned.... __________________ "You want a bailout bottle? Go get the pink one from Fill Express, BTCH!" - John Cogan "If I sent my rebreather back, I might live longer, but would I live* more?" - Abbo
(Online)

29th March 2008, 23:35	#112 (permalink)
mempilot Eric Stadtmueller Current Rebreather/s: Megalodon Other Rebreather/s: Megalodon Join Date: Aug 2006 Location: Ft. Lauderdale Posts: 1,708	Re: ISC posts test data Quote: (Originally Posted by netmage) ...certainly not scientifically valid... I would imagine many units have changed hands on the used market like yours and mine without getting any mod to profile. __________________ Eric Stadtmueller, otherwise known as, MEM "Da Pilot"
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29th March 2008, 23:41	#113 (permalink)
wedivebc Dave Tomblin Current Rebreather/s: Megalodon Other CCR Other Rebreather/s: Not Bought Yet Inspiration Classic Sport Kiss Other CCR Join Date: Feb 2005 Location: Vancouver Island BC Canada Posts: 1,508	Re: ISC posts test data Quote: (Originally Posted by Hyper-limits) I was told that there are not. I got #537 in July last year. It would be interesting to find the exact number. Most be around 500 to 600 Meg out there. I think Steve Stolen got can #500 and I was told that was pretty close to production numbers when it was built, about a year ago. __________________ Cheers, Dave.... Man is the only animal burdened with the knowledge he will eventually die
(Offline)

30th March 2008, 00:57	#114 (permalink)
tecdivertraining EXPLORER Current Rebreather/s: Inspiration Classic Inspiration Vision Evolution Megalodon Ouroboros Dolphin Other Rebreather/s: Not Bought Yet Dolphin Join Date: May 2005 Location: Phuket, Thailand Posts: 531	Re: ISC posts test data In Jan 2008 I was told by ISC they had over 700 units sold. __________________ Mathew Partridge Technical Director Pro-Tech Dive College www.protechdivers.com www.tech-ccr.com
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30th March 2008, 03:03	#115 (permalink)
netmage Tim Owens Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Dec 2005 Location: Coconut Creek, FL Posts: 704	Re: ISC posts test data Quote: (Originally Posted by mempilot) I would imagine many units have changed hands on the used market like yours and mine without getting any mod to profile. Still..., even w/ 10-20% turnover the number is up there compared to shipping s/n's..., and we're making the assumption everyone diving a Rebreather is 'plugged into' this community... ~700 just dosn't seem outside the realm of possibility... when other folks are throwing 300-400 around.... __________________ "You want a bailout bottle? Go get the pink one from Fill Express, BTCH!" - John Cogan "If I sent my rebreather back, I might live longer, but would I live* more?" - Abbo
(Online)

30th March 2008, 05:10	#116 (permalink)
mountain diver Silent Lucidity Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Mar 2006 Location: edmonton, ab. Posts: 228	Re: ISC posts test data From ISC, always helps to keep things in perspective. http://www.customrebreathers.com/faq.html all the best.
(Offline)

30th March 2008, 06:34	#117 (permalink)
AD_ward9 RBW Member Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Jun 2005 Location: Scotland Posts: 2,011	Re: ISC posts test data Quote: (Originally Posted by netmage) Still..., even w/ 10-20% turnover the number is up there compared to shipping s/n's..., and we're making the assumption everyone diving a Rebreather is 'plugged into' this community... ~700 just dosn't seem outside the realm of possibility... when other folks are throwing 300-400 around.... The more ISC sell the better. My interest in the ISC numbers is in tracking accident risks, and to a lesser degree the market size growth in sports rebreather diving. ISC confirmed in writing to a presenter at the British Hyperbaric Society meeting last November that 500 units were out there in October 2007. That ties in with our figures around 350 to 400 ISC RBs that appear to be in use at least once a year. I need to write a paper on everyone's numbers, and put it on our web site under the accident section. I think everyone is in general agreement except for one mnfr in particular (not ISC). There is an anomaly that 650 people on Rebreather World claim to have Megs. Some of those are Megs people used to have but sold, some are people who's friend has a Meg that they used a few times, some are duplicate accounts. I think the 350 to 400 in use if a fair number, 500 sold from the time ISC started to Oct 2007 is a fair number, so it could be 600 around about now. 700 though is stretching a bit too far. I should add that ISC set a very good example in being open with this number, in serial numbering units sequentially and general honesty in this area. CCR Ltd, Steam Machines and others are doing the same. This is an important issue for those tracking safety. Alex Last edited by AD_ward9 : 30th March 2008 at 06:36.
(Offline)

30th March 2008, 10:25	#118 (permalink)
Rob Dobson RBW Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Dec 2007 Location: Oxford Posts: 100	Re: ISC posts test data I bought Meg can #632 in late January this year and the guy I did my course with had can #714 or something around that number so that was 3 months ago. I would think that can IDs in the #800+ range must be in circulation by now, but some people will own more than one can I guess (I'm looking at getting another one myself).
(Offline)

30th March 2008, 14:30	#119 (permalink)
AD_ward9 RBW Member Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Jun 2005 Location: Scotland Posts: 2,011	Re: ISC posts test data Quote: (Originally Posted by Rob Dobson) I bought Meg can #632 in late January this year and the guy I did my course with had can #714 or something around that number so that was 3 months ago. I would think that can IDs in the #800+ range must be in circulation by now, but some people will own more than one can I guess (I'm looking at getting another one myself). The units do not seem to leave ISC sequentially: but this shows the batch sizes from ISC have gone up a lot. Alex
(Offline)

30th March 2008, 17:54	#120 (permalink)
paulraymaekers rEvo's daddy Current Rebreather/s: rEvo Other CCR Home Build Other Rebreather/s: rEvo Other CCR Home Build Join Date: May 2005 Location: belgium Posts: 1,638	Re: ISC posts test date Quote: (Originally Posted by Drmike) same test equipment/method? Thats very interesting and slightly concerning. Did you contact Kevin and inform him? Did you guys manage to work out why the results vary? Im sure he would change his chart if you could prove his data wrong. What did he say? the sheets are posted in another treadh the tests have been done on the very same testing machine! in tryiing to reproduce the absolutely worst result, we completely taped a unit to prevent as much as possible water flowing in and out the unit... (there are pictures of that test) even under those circomstances we got +/- 4.7 joule/liter... far less then what kevin reported... (he reported so high that they could not mesure it..) the currunt units with the 90° elbows in the breathing hose have +/- 3.7 joule/liter, and with straith connectors 3.15 (all data for the 75 l/min, 3 liter tidal at 5bar absolute) Kevin never commented our results... so either the scrubber must have been flooded when the test was done, or the counterlung completely folded, and blocking the gaspath.. w'll never know paul __________________ www.rEvo-rebreathers.com .... the earth is flat, Elvis is alive, and radial scrubbers give longer dwell time than axials...
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