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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: 229
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  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: 7,987
    17th February 2010, 12:36 Go to last post
  2. 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: 40,841
    19th October 2007, 16:24 Go to last post
  3. 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: 3,519
    29th March 2008, 11:55 Go to last post
  1. 1 point (high PO2) versus 2 point calibration

    Following a discussion and having learned something new, I thought I could suggest an alternative controller design that might be superior to the 2...

    Started by Gilles‎, 25th January 2008 11:22
    2 Pages
    1 2
    • Replies: 13
    • Views: 6,702
    26th January 2008, 23:39 Go to last post
  2. 1:st stage regulator for RB?

    Hi, I have seen that some rebreathers use the APEKS US4 (unsealed version of the standard DS4) as diluent and oxygen 1:st stage regulator. To...

    Started by maxnil‎, 17th November 2010 22:24
    2 Pages
    1 2
    • Replies: 11
    • Views: 3,547
    21st November 2010, 11:29 Go to last post
  3. 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: 2,437
    24th August 2011, 01:46 Go to last post
  4. A big step for me

    Hi all Dived over 10 years, last 13 months on YBOD. Never dived on helium. Max depth 40m, and happy at that depth. I've almost completed my...

    Started by Shaunzxr‎, 12th February 2006 11:25
    • Replies: 4
    • Views: 1,604
    27th February 2006, 09:36 Go to last post
  5. A Quick Question for CCR Dolphin Pilots

    I'm finally getting around to setting up my RB with the TMI Shop back plate adapter. I know several of you use that same one. I have a Transpac...

    Started by Scuba_Vixen‎, 20th November 2005 03:35
    • Replies: 5
    • Views: 1,669
    21st November 2005, 19:43 Go to last post
  6. About Ready to Quit and Give Up ......

    Working on this HUD project :mad: (crass solicitation for encouragement here) The housing part of the project is driving me mad. For...

    Started by Scuba_Vixen‎, 15th April 2006 21:26
    4 Pages
    1 2 3 4
    • Replies: 33
    • Views: 4,891
    24th April 2006, 02:36 Go to last post
  7. Abyss Vampyr Rebreather

    Abyss Vampyr Best regards; Janwillem Bech Rebreathers Worldwide

    Started by Janwillem Bech‎, 29th March 2007 00:32
    • Replies: 7
    • Views: 3,548
    29th March 2007, 14:52 Go to last post
  8. Adjusting Drager P-ports

    I need to re-position a couple of p-ports so the release buttons are in a more protected position. I am having a devil of a time trying to unscrew...

    Started by 4ster‎, 9th February 2010 15:40
    • Replies: 8
    • Views: 1,889
    11th February 2010, 14:57 Go to last post
  9. Adjusting the O2 Flow Rate - Kiss Valve

    Using the old style Kiss valve and am doing my first adjustment of the O2 flow rate, the papers Kim sent me talk about the relationship between the...

    Started by 5000grapas‎, 20th February 2008 19:45
    2 Pages
    1 2
    • Replies: 17
    • Views: 3,670
    26th February 2008, 00:51 Go to last post
  10. ADV functionality from modified BOV

    wondering if anyone has experimented with poking a hole in a BOV barrel so that when in closed circuit, neg pressure would still trigger the BOV's...

    Started by OceanOpportunity‎, 21st October 2017 03:57
    • Replies: 4
    • Views: 606
    21st October 2017, 21:21 Go to last post
  11. ADV Mod For CCR Dolphin .....

    Hi Guys, The CCR dolphin project is moving along very well. The planning is all done and all the parts are on the way. There's one...

    Started by Scuba_Vixen‎, 8th June 2005 18:22
    2 Pages
    1 2
    • Replies: 10
    • Views: 3,476
    21st July 2005, 04:59 Go to last post
  12. Advantages and Disadvantages of Oxigen Injection on Inhale CL

    I'm wondering what were the advantages (and disadvantages as well) Oxigen Injection on inhale side of the loop. The only advantages I can see is...

    Started by RogerioWagner‎, 27th July 2010 19:09
    • Replies: 4
    • Views: 2,433
    27th July 2010, 20:37 Go to last post
  13. Advice as to O2 Clean parts?

    hello guys, just wondering. i know that for some might seem like a silly question, but i have recently purchased two 34L tanks which one is...

    Started by Outlaw‎, 2nd July 2007 18:38
    • Replies: 1
    • Views: 1,442
    2nd July 2007, 20:26 Go to last post
  14. Against Mass Flow Orifice (MFO)

    Just saw the copied post below by AG (from this discussion: COPIS - Unified Team Diving). I have no affiliation with this RB and am just curious...

    Started by rainer_‎, 14th July 2010 23:10
    8 Pages
    1 2 3 4 5 ... 8
    • Replies: 71
    • Views: 9,478
    18th July 2010, 23:18 Go to last post
  15. Air Break with a rebreather

    Hi, Just to know what you guys actually do in the real life when it comes to air breaks. I personaly don't like them very much, and IMHO for me...

    Started by cedricverdier‎, 26th May 2005 12:08
    • Replies: 4
    • Views: 2,127
    26th May 2005, 16:05 Go to last post
  16. Almost Ready To Dive .....

    Hi All, Thought I'd post an update to the Dolphin CCR project. I'll do a full write-up later, after I've had it in the water. Everything...

    Started by Scuba_Vixen‎, 7th July 2005 08:36
    5 Pages
    1 2 3 4 5
    • Replies: 47
    • Views: 5,787
    16th July 2005, 18:44 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: 17,370
    24th August 2011, 00:07 Go to last post
  18. 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: 7,826
    25th July 2012, 22:22 Go to last post
  19. Anyone know anything about this?

    http://www.inspired-training.com/decochek.htm

    Started by rogeringebo‎, 9th February 2006 18:14
    • Replies: 2
    • Views: 1,617
    10th February 2006, 01:30 Go to last post
  20. APDiving OPV User Serviceable?

    Hey - I've got minor leakage (negative) on my C/L OPV. It will pass the 2 minute test (but when the unit is wet - I can hear a slight gurgling...

    Started by bl6394‎, 14th April 2016 16:47
    • Replies: 4
    • Views: 1,238
    16th April 2016, 12:19 Go to last post

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