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Forum: Rebreather Design & Operation

Forum to discuss how and why Rebreathers are designed as they are and how key components operate.

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  1. Forum to discuss O2 and CO2 cells.

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    • Threads: 230
    • Posts: 3,241
  2. Forum to discuss all aspects of Scrubbers, Absorbents and Scrubber Architecture.

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    • Threads: 224
    • Posts: 3,054
  3. Forum to discuss home built CCR accessories

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    • Threads: 66
    • Posts: 684

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  1. Sticky Thread Sticky: An An attempt to clear the misconception on CMF

    Below there is a summary of what has been wrote about this issue. A greatly misunderstood and misapplied notion is that of “choked flow”, also...

    Started by diveoceanos‎, 1st January 2010 22:01
    3 Pages
    1 2 3
    • Replies: 23
    • Views: 8,016
    17th February 2010, 12:36 Go to last post
  2. Sticky Thread Sticky: Rebreather Testing Data

    Below you'll find a collection of links to rebreather testing data and results that have been published. This thread is not to discuss and argue...

    Started by caveseeker7‎, 29th March 2008 11:55
    • Replies: 0
    • Views: 3,533
    29th March 2008, 11:55 Go to last post
  3. Sticky Thread Sticky: Rebreather Comparison Chart

    Here you can see attached the poster that caused such a buzz at the dive show. (click on it to zoom in) Kevin tells me that he is willing to...

    Started by schford‎, 14th October 2007 20:53
    11 Pages
    1 2 3 4 5 ... 11
    • Replies: 107
    • Views: 41,083
    19th October 2007, 16:24 Go to last post
  1. I would like to hear what water intrusion failures has caused you to loose a dive.

    Following Michaels' thoughts on the other thread. I would be interested to know what failures have caused you to abort or thumb a dive. Please keep...

    Started by Dsix36‎, 6th April 2013 22:14
    3 Pages
    1 2 3
    • Replies: 24
    • Views: 4,565
    8th April 2013, 12:15 Go to last post
  2. Optima secondary handset malfunction or me?

    Can any one explain this discrepancy? My primary handset shows the correct reading, but the secondary shows PO2 = 0 on all three sensors. I have...

    Started by Plato‎, 7th April 2013 16:31
    • Replies: 3
    • Views: 1,403
    8th April 2013, 02:08 Go to last post
  3. JJ vs APD BMCLs - OPV placement

    Dear RBW Forum, When comparing the JJ and APD BMCLs, the biggest difference seems to be the placement of the over-pressure valves... Why does...

    Started by cjs_777‎, 12th March 2013 10:08
    apd, bmcl, counterlungs
    • Replies: 7
    • Views: 1,550
    14th March 2013, 10:25 Go to last post
  4. Question about the Oxygauge - cells rated current.

    Hopefully thre is someone who knows more than I do about electronics and also failiar with the oxygauge who can answer this. I'm busy tidying at...

    Started by Dave1w‎, 1st January 2013 16:30
    • Replies: 0
    • Views: 720
    1st January 2013, 16:30 Go to last post
  5. Help for a cell checker: De-Ox or narked?

    Hi all, I would buy a cell checker which of these two do you recommend? It' is possible to find the manuals to study them before I buy them? ...

    Started by marco73‎, 28th December 2012 19:05
    • Replies: 2
    • Views: 1,105
    28th December 2012, 21:29 Go to last post
  6. Sodalime Size

    Hi Folks, Can anyone tell me the size of soda lime or sofnolime or an equivalent product. I trying to design a CO2 scrubber for a closed...

    Started by Rauld‎, 2nd August 2012 03:03
    • Replies: 2
    • Views: 1,212
    3rd August 2012, 22:22 Go to last post
  7. Another take on measuring CO2

    Lot's have been said and written on the subject and the overall concensus seems to be "nice to have but not really necessary". That is if you pack...

    Started by nilmol‎, 17th July 2012 17:23
    8 Pages
    1 2 3 4 5 ... 8
    • Replies: 72
    • Views: 7,830
    25th July 2012, 22:22 Go to last post
  8. Gorilla o2 valve ?

    Hi folks, Thinking of investing in one of these o2 valves from gorilla ob the us. Anyone got any experience with this cmf unit ? Sent from my...

    Started by pegcjs‎, 15th July 2012 15:53
    • Replies: 8
    • Views: 1,727
    20th July 2012, 16:41 Go to last post
  9. The best way to mend Nylon

    I'm searching for the best way to permanently shut/mend the MAV ports of the CL's bladders as I'm changing my configuration. But I'm also trying to...

    Started by Brainx3‎, 27th June 2012 09:50
    • Replies: 0
    • Views: 852
    27th June 2012, 09:50 Go to last post
  10. LSS Fundamentals

    A very small insight on Rebreather design...

    Started by VR Technology‎, 26th June 2012 14:05
    • Replies: 4
    • Views: 1,034
    26th June 2012, 20:48 Go to last post
  11. CMF flow rates: O2 vs Air

    So, this will probably raise several questions along the lines of "why?" :cuckoo: The answer to that is not a good one, I'm really just a curious...

    Started by deeprapture‎, 24th March 2012 06:41
    4 Pages
    1 2 3 4
    • Replies: 31
    • Views: 5,122
    31st March 2012, 07:28 Go to last post
  12. Why can't someone design a CMF valve that goes deeper/can a needle valve do it?

    I understand the principles of the CMS as a layman, but cant see why someone can't just put more pressure on one side and adjust the hole size? Or...

    Started by jools‎, 11th February 2012 14:39
    3 Pages
    1 2 3
    • Replies: 27
    • Views: 4,346
    13th February 2012, 10:01 Go to last post
  13. Fixation on CO2?

    Over the past year I've noticed that CO2 Monitoring has become a constant request whenever there is a thread about "Which rebreather" from a newbie...

    Started by Ben Field‎, 9th November 2011 10:04
    8 Pages
    1 2 3 4 5 ... 8
    • Replies: 75
    • Views: 8,335
    13th November 2011, 09:44 Go to last post
  14. Life jacket life raft for diving applications.

    On the Polish forum rebreathers.pl appeared on the use of rechargeable batteries in the power supply. I told a special arrangement for a continuous...

    Started by anarchista‎, 1st November 2011 17:45
    • Replies: 0
    • Views: 863
    1st November 2011, 17:45 Go to last post
  15. CCR Diving with FFM

    Talking about dead spaces and CO2 retention. Many CCR divers today use full face masks to dive, and of course many new divers also choosing to use...

    Started by Brainx3‎, 6th October 2011 17:43
    2 Pages
    1 2
    • Replies: 14
    • Views: 5,307
    11th October 2011, 20:27 Go to last post
  16. 3/8-24 threads are stripped! have an insert?

    looking for a brass or stainless insert to repair stripped 3/8-24 threaded port in a plastic fitting. anyone ever find a source for these? thanks

    Started by OceanOpportunity‎, 1st February 2011 13:12
    • Replies: 8
    • Views: 2,438
    24th August 2011, 01:46 Go to last post
  17. Anodizing Aluminum or powder coating?

    Does anyone know what type of anodizing is best for aluminum for use in salt water? I have been told that there are several different methods of...

    Started by S. Marc‎, 16th February 2007 16:27
    2 Pages
    1 2
    • Replies: 19
    • Views: 17,401
    24th August 2011, 00:07 Go to last post
  18. counter lung size

    I was thinking today, as I swam an extra 1000m on my dive... (remember to make the left turn earlier, Andy!) and was stumped, so someone show me that...

    Started by Andy Del‎, 6th August 2011 12:48
    • Replies: 0
    • Views: 1,050
    6th August 2011, 12:48 Go to last post
  19. Side mounted rebreathers

    does anyone know where I can get a rebreather mouth piece with inlet and outlet on the same side, so I can sidemount my rebreathers. I am wanting...

    Started by dalegray‎, 12th December 2005 16:44
    4 Pages
    1 2 3 4
    • Replies: 38
    • Views: 9,189
    7th July 2011, 07:36 Go to last post
  20. Sidemounted decobreather

    OK, I've come to the point where I could really see the benefit of another rebreather in order to finish deco. Mainly I've identified two problems...

    Started by Dragan‎, 2nd July 2011 11:17
    • Replies: 4
    • Views: 1,534
    5th July 2011, 12:08 Go to last post

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