Caustic cocktail in a FFM

DZLHED · 21st March 2006, 04:29

My rebreather instructor (who shall remain anonymous) told me he would avoid a FFM configuration because having had a cocktail he "could not imagine taking it up the nose." The other argument against was that in his opinion, Hyperoxia and the resulting convulsion was far less likely than a cocktail anyway. This forum has an enormous amount of collective experience so I'm looking for opinions and maybe some anecdotal experiences.

Aloha,
Todd

rogeringebo · 21st March 2006, 05:09

Hi!
I bought the Kirby Morgan M-48 wich is separated between mask and breathing pod,so no worries about getting sorb up my nose...

It takes less than a second to pop the pod off and hit the bailoutreg...
The reason I bought it was that most fatal Rebreather accidents results from the diver passing out,losing DSV and drowning...this should be much less lightly with a FFM...
The mask fits me perfect and the limited view people often talk about,I cant understand...I have exactly the same view as in my normal black mask...

Cheers
Rodge

Drmike · 21st March 2006, 05:57

Quote: (Originally Posted by DZLHED)

My rebreather instructor (who shall remain anonymous) told me he would avoid a FFM configuration because having had a cocktail he "could not imagine taking it up the nose." The other argument against was that in his opinion, Hyperoxia and the resulting convulsion was far less likely than a cocktail anyway. This forum has an enormous amount of collective experience so I'm looking for opinions and maybe some anecdotal experiences.

Aloha,
Todd

Any FFM for use with a Rebreather would have an internal (to the mask) mouthbite so I dont see why you would necessarily get it up your nose.

Getting some cocktail up ones nose might be unpleasant - but I suspect far more survivable than an O2 hit (without a FFM)

If you really think this is critical concern (I dont) then just get a KM48 FFM as the oral and nasal cavities are seperate anyway.

Nick uk. · 21st March 2006, 07:07

As Mike said there is a mouthpiece inside any FFM used with a reb, to stop any water leakage entering the loop. And it's hyperoxia and hypoxia that was the driving factor in getting one for me, and if there was ever any need to ditch the mask in a hurry, it doesn't take long to pull it off....

Pete · 28th March 2006, 23:24

The M-48 will also allow you to come off the mouthpiece and provide a breathing cavity between diver and cocktail. That cavity also includes a manual purge valve that could be used as a flush.

21st March 2006, 04:29	#1 (permalink)
DZLHED Swimmin' upstream Current Rebreather/s: MK 15.X Other Rebreather/s: Inspiration Classic Sport Kiss Classic Kiss Join Date: Jun 2005 Location: Maui County, Hawaii Posts: 101	Caustic cocktail in a FFM My rebreather instructor (who shall remain anonymous) told me he would avoid a FFM configuration because having had a cocktail he "could not imagine taking it up the nose." The other argument against was that in his opinion, Hyperoxia and the resulting convulsion was far less likely than a cocktail anyway. This forum has an enormous amount of collective experience so I'm looking for opinions and maybe some anecdotal experiences. Aloha, Todd __________________ Aloha, Dieselhead To err is Human... to ccr, Divine. www.NorthShoreExplorers.com
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21st March 2006, 05:09	#2 (permalink)
rogeringebo Done with bubbles Current Rebreather/s: Pelagian Other Rebreather/s: Megalodon Classic Kiss Pelagian Join Date: Sep 2005 Location: Stockholm Sweden Posts: 688	Re: Caustic cocktail in a FFM Hi! I bought the Kirby Morgan M-48 wich is separated between mask and breathing pod,so no worries about getting sorb up my nose... It takes less than a second to pop the pod off and hit the bailoutreg... The reason I bought it was that most fatal Rebreather accidents results from the diver passing out,losing DSV and drowning...this should be much less lightly with a FFM... The mask fits me perfect and the limited view people often talk about,I cant understand...I have exactly the same view as in my normal black mask... Cheers Rodge
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21st March 2006, 05:57	#3 (permalink)
Drmike Custom Title Allowed! Current Rebreather/s: MK 15.X Ouroboros Other CCR Home Build Other Rebreather/s: Inspiration Classic Other CCR Home Build Join Date: Feb 2005 Posts: 3,128	Re: Caustic cocktail in a FFM Quote: (Originally Posted by DZLHED) My rebreather instructor (who shall remain anonymous) told me he would avoid a FFM configuration because having had a cocktail he "could not imagine taking it up the nose." The other argument against was that in his opinion, Hyperoxia and the resulting convulsion was far less likely than a cocktail anyway. This forum has an enormous amount of collective experience so I'm looking for opinions and maybe some anecdotal experiences. Aloha, Todd Any FFM for use with a Rebreather would have an internal (to the mask) mouthbite so I dont see why you would necessarily get it up your nose. Getting some cocktail up ones nose might be unpleasant - but I suspect far more survivable than an O2 hit (without a FFM) If you really think this is critical concern (I dont) then just get a KM48 FFM as the oral and nasal cavities are seperate anyway. __________________ Get a girlfriend you sad twat - a Rebreather is an unfaithful mistress - dont blind yourself to her faults just because she goes down on you
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21st March 2006, 07:07	#4 (permalink)
Nick uk. Made in England. Current Rebreather/s: Inspiration Classic Azimuth Other Rebreather/s: Azimuth Join Date: Nov 2005 Location: Viale C.Colombo 75 Marina di Carrara. MS 54036 Italy Posts: 579	Re: Caustic cocktail in a FFM As Mike said there is a mouthpiece inside any FFM used with a reb, to stop any water leakage entering the loop. And it's hyperoxia and hypoxia that was the driving factor in getting one for me, and if there was ever any need to ditch the mask in a hurry, it doesn't take long to pull it off.... __________________ If it aint broke....don't fix it, and if it is.............well......get another one! divechief2000@hotmail.com
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28th March 2006, 23:24	#5 (permalink)
Pete New Member Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Mar 2006 Location: Ca. U.S.A. Posts: 11	Re: Caustic cocktail in a FFM The M-48 will also allow you to come off the mouthpiece and provide a breathing cavity between diver and cocktail. That cavity also includes a manual purge valve that could be used as a flush.
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