New article about the m-48 FFM

cedricverdier · 11th September 2006, 00:17

Hi all,

Just to let you know that I just posted a new article on the Rebreather World library (again!).
This time, it's about how to modify and adapt a Kirby Morgan m-48 FFM if you want to comfortably use it with your rebreather:

http://www.rebreatherworld.com/rebre...html#post66419

Thanks to all the rebreather divers who gave me some feedback (Mike, Fred, etc). Don't hesitate to share your experience and the modifications you've done.

I hope it'll help.

Cheers

RonMicjan · 11th September 2006, 01:09

Thanks for the info Cedric, insightfull as always. I have a question that those of us using FFM's might be able to answer. Do you still carry a back up mask when diving a FFM? What are the chances of a major failure of the FFM that would require going to a different mask? I am currently using the Draeger CCR paranova mask with the P port on it and have the P port reg from apex fitted to my bailout cylinder. I do currently carry a second regular mask and my bailout cylinders have regular 2nd stages in additon to the fitting for the apex 2nd. I figure that the standard 2nd stages would be for the buddy to use, or me if I had to get off the mask.

On your article, I have heard from two other divers that the KM mask is rather uncomfortable, how do you feel about that?

rogeringebo · 11th September 2006, 04:42

Cheers Cedric!
I bought this mask and it fitted my face fine.
I tried to get the "nato-pod" but gave up......
Found that the longer mouthpiece that comes with the mask was way to soft and the dsv was zagging and I had to bite down on the mouthpiece to keep it close to my mouth.....thought about getting a Golem BOV but came to the conclution that it would be to heavy on the KM 48....
I decided to sell the FFM

If it wold be possible to get a harder long mothpiece I am willing to have another go at it...
If someone else comes up with a solution ,please let me know
Will add picture of standard long mouthpiece (the soft one)

Rodge

cedricverdier · 11th September 2006, 07:36

Quote: (Originally Posted by RonMicjan)

Thanks for the info Cedric, insightfull as always. I have a question that those of us using FFM's might be able to answer. Do you still carry a back up mask when diving a FFM?

On your article, I have heard from two other divers that the KM mask is rather uncomfortable, how do you feel about that?

Hi Ron,

No back-up mask for me! I changed the original elastic straps to a cordura-style strap: impossible to break or to lose if kicked by another diver. And because of the design of the m-48, no need to remove the mask if bailing out to OC.

Comfort? Quite good. It fits my face quite well but I guess it may vary from individual to individual.

See you soon.

Cheers

dive2dive2000 · 11th September 2006, 14:51

Quote: (Originally Posted by rogeringebo)

Cheers Cedric!
I bought this mask and it fitted my face fine.
I tried to get the "nato-pod" but gave up......
Found that the longer mouthpiece that comes with the mask was way to soft and the dsv was zagging and I had to bite down on the mouthpiece to keep it close to my mouth.....thought about getting a Golem BOV but came to the conclution that it would be to heavy on the KM 48....
I decided to sell the FFM

If it wold be possible to get a harder long mothpiece I am willing to have another go at it...
If someone else comes up with a solution ,please let me know
Will add picture of standard long mouthpiece (the soft one)

Rodge

Hi Rodge,

Dr Mike has made a SS plate that goes over the outside of the POD to stiffen it up. The thread and pics is somewhere in Rebreather World try a FFM search???

gpion · 26th September 2006, 18:02

Hi Cedric

did you know that there is a Kirby Morgan brand none strech strap made for the m-48 i use it with my POD and it is great. !!

Now I'm trying to have some adaptor made to fit a Poseidon x-treme reg to the POD

Bonne journée

JonnyB · 26th September 2006, 18:44

Quote: (Originally Posted by gpion)

did you know that there is a Kirby Morgan brand none strech strap made for the m-48 i use it with my POD and it is great.

Could you please try to explain what you mean?

/Jonny

rogeringebo · 26th September 2006, 21:04

The neckstrap does not flex.....its stiff...

/R

divelermentov · 27th September 2006, 06:00

how easy is it to operate the SDV just in case that you have to go of the loop ?

And if you want to run the unit open loop, or drain excess gas when ascending, can you still do it by exhaling to the side of teh mouthpiece.
I guess i am concerned how quick th epod will drain

cheers
christian

PS Great article cedrik - well done french man, will have to meet up one day, give me a yell whenever you are down under

greatlakesphotoguy · 14th February 2007, 17:39

The M-48 seems to me like the pod is floppy and and the mask creates too much "tunnel vision" to see a HUD. Is this true?

11th September 2006, 00:17	#1 (permalink)
cedricverdier S21 M.I.B. Current Rebreather/s: Evolution Megalodon Other Rebreather/s: Not Bought Yet Inspiration Classic Inspiration Vision Sport Kiss Classic Kiss Join Date: Apr 2005 Location: Worldwide! Posts: 497	New article about the m-48 FFM Hi all, Just to let you know that I just posted a new article on the Rebreather World library (again!). This time, it's about how to modify and adapt a Kirby Morgan m-48 FFM if you want to comfortably use it with your rebreather: http://www.rebreatherworld.com/rebre...html#post66419 Thanks to all the rebreather divers who gave me some feedback (Mike, Fred, etc). Don't hesitate to share your experience and the modifications you've done. I hope it'll help. Cheers __________________ Cedric Verdier PADI Course Director, ANDI-IANTD-PSAI-TDI-DSAT-DAN-NAUI-CMAS Instructor Trainer Trimix (CCR and OC) and Cave Diving Instructor Trainer www.CedricVerdier.com DIRrebreather member
(Offline)

11th September 2006, 01:09	#2 (permalink)
RonMicjan Cap Ron scourge of the NW Current Rebreather/s: Megalodon Dolphin Home Build Other Rebreather/s: Sport Kiss Classic Kiss Dolphin Home Build Join Date: Feb 2005 Location: Cape Disapointment, The Graveyard of the Pacific Posts: 1,100	Re: New article about the m-48 FFM Thanks for the info Cedric, insightfull as always. I have a question that those of us using FFM's might be able to answer. Do you still carry a back up mask when diving a FFM? What are the chances of a major failure of the FFM that would require going to a different mask? I am currently using the Draeger CCR paranova mask with the P port on it and have the P port reg from apex fitted to my bailout cylinder. I do currently carry a second regular mask and my bailout cylinders have regular 2nd stages in additon to the fitting for the apex 2nd. I figure that the standard 2nd stages would be for the buddy to use, or me if I had to get off the mask. On your article, I have heard from two other divers that the KM mask is rather uncomfortable, how do you feel about that? __________________ Marine rescue, towing and salvage. Interfering with natural selection since 1983. www.tmishop.com Diving bits etc. www.seatowpdx.com The Summer Job
(Offline)

11th September 2006, 07:36	#4 (permalink)
cedricverdier S21 M.I.B. Current Rebreather/s: Evolution Megalodon Other Rebreather/s: Not Bought Yet Inspiration Classic Inspiration Vision Sport Kiss Classic Kiss Join Date: Apr 2005 Location: Worldwide! Posts: 497	Re: New article about the m-48 FFM Quote: (Originally Posted by RonMicjan) Thanks for the info Cedric, insightfull as always. I have a question that those of us using FFM's might be able to answer. Do you still carry a back up mask when diving a FFM? On your article, I have heard from two other divers that the KM mask is rather uncomfortable, how do you feel about that? Hi Ron, No back-up mask for me! I changed the original elastic straps to a cordura-style strap: impossible to break or to lose if kicked by another diver. And because of the design of the m-48, no need to remove the mask if bailing out to OC. Comfort? Quite good. It fits my face quite well but I guess it may vary from individual to individual. See you soon. Cheers __________________ Cedric Verdier PADI Course Director, ANDI-IANTD-PSAI-TDI-DSAT-DAN-NAUI-CMAS Instructor Trainer Trimix (CCR and OC) and Cave Diving Instructor Trainer www.CedricVerdier.com DIRrebreather member
(Offline)

11th September 2006, 14:51	#5 (permalink)
dive2dive2000 PRISM DIVER & LUVIN IT! Current Rebreather/s: Prism Topaz Other Rebreather/s: Join Date: Feb 2005 Location: Long Island, NY Posts: 788	Re: Adapting an M-48 FFM for CCR diving Quote: (Originally Posted by rogeringebo) Cheers Cedric! I bought this mask and it fitted my face fine. I tried to get the "nato-pod" but gave up...... Found that the longer mouthpiece that comes with the mask was way to soft and the dsv was zagging and I had to bite down on the mouthpiece to keep it close to my mouth.....thought about getting a Golem BOV but came to the conclution that it would be to heavy on the KM 48.... I decided to sell the FFM If it wold be possible to get a harder long mothpiece I am willing to have another go at it... If someone else comes up with a solution ,please let me know Will add picture of standard long mouthpiece (the soft one) Rodge Hi Rodge, Dr Mike has made a SS plate that goes over the outside of the POD to stiffen it up. The thread and pics is somewhere in Rebreather World try a FFM search??? __________________ Safe Diving, Martin
(Offline)

26th September 2006, 18:02	#6 (permalink)
gpion New Member Current Rebreather/s: Inspiration Vision Evolution Other Rebreather/s: Join Date: May 2006 Location: Montreal, Canada Posts: 4	Re: New article about the m-48 FFM Hi Cedric did you know that there is a Kirby Morgan brand none strech strap made for the m-48 i use it with my POD and it is great. !! Now I'm trying to have some adaptor made to fit a Poseidon x-treme reg to the POD Bonne journée
(Offline)

26th September 2006, 18:44	#7 (permalink)
JonnyB Johnny The Hatch Current Rebreather/s: MK 15.X Titan Other CCR Other SCR Home Build Other Rebreather/s: Not Bought Yet Inspiration Classic Megalodon Sport Kiss Classic Kiss Other CCR Other SCR Home Build Join Date: Jan 2005 Location: Sweden (Stockholm)/Cyprus(Ayia Napa) Posts: 971	Re: New article about the m-48 FFM Quote: (Originally Posted by gpion) did you know that there is a Kirby Morgan brand none strech strap made for the m-48 i use it with my POD and it is great. Could you please try to explain what you mean? /Jonny __________________ A quote from Crazyduck - In remembering our own Rob Davies. "Outbound flight 777 heavy you are cleared for flight Due west into that warm red Texas sunset You have angels on your wings and divers memories on your six." Rest In Peace http://www.divetekcyprus.com http://www.diveccr.com
(Offline)

26th September 2006, 21:04	#8 (permalink)
rogeringebo Custom Title Allowed! Current Rebreather/s: Pelagian Other Rebreather/s: Megalodon Classic Kiss Pelagian Join Date: Sep 2005 Location: Stockholm Sweden Posts: 702	Re: New article about the m-48 FFM The neckstrap does not flex.....its stiff... /R
(Offline)

27th September 2006, 06:00	#9 (permalink)
divelermentov Nutty dentist - uwdriller Current Rebreather/s: Inspiration Classic Home Build Other Rebreather/s: Home Build Join Date: May 2006 Location: Auckland Posts: 647	Re: New article about the m-48 FFM how easy is it to operate the SDV just in case that you have to go of the loop ? And if you want to run the unit open loop, or drain excess gas when ascending, can you still do it by exhaling to the side of teh mouthpiece. I guess i am concerned how quick th epod will drain cheers christian PS Great article cedrik - well done french man, will have to meet up one day, give me a yell whenever you are down under __________________ May The Sorb Be With You
(Online)

14th February 2007, 17:39	#10 (permalink)
greatlakesphotoguy New Member Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Feb 2007 Location: Wisconsin Posts: 2	question The M-48 seems to me like the pod is floppy and and the mask creates too much "tunnel vision" to see a HUD. Is this true?
(Offline)

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode