bizarre breathing problem

PCDiver · 18th September 2006, 13:16

Quote: (Originally Posted by decoweenie)

Of course, I am still referring to the DT BMCL, and not the general BMCL system like CK, etc. They are totally different things (i.e. placement, confinement, etc).

It is not my design, and I am responsible for you having one in the first place (thru Steven). So I want to make sure that all information posted are correct that only you have a problem with it, and a lot more people than just 2 diving the DT BMCL. So Dave T could still market it later if he wants to, it is his design.

I am sorry that it didn't work out for you.

I haven't given up completely.

decoweenie · 18th September 2006, 18:48

Quote: (Originally Posted by PCDiver)

I haven't given up completely.

Don't give up...

It could be something really simple to fix, and it would just happen when it happens...

PCDiver · 5th February 2007, 12:19

Update.

I still had this weird breathing problem from time to time with my OTS lungs and it really got on my nerves. I have been diving for the last year with a "big eye" mask. A week ago I switched back to my old, low volume Mares mask. I've done three dives since and so far no breathing problems what so ever. Time will tell but I'm hopefull that the problem is finaly solved.

BTW - Mike, can you send me the lungs back?

decoweenie · 5th February 2007, 14:03

Quote: (Originally Posted by PCDiver)

...can you send me the lungs back?

No, you don't get to play with cool things anymore for blaming the problem (wrongly) on the BMCL...

steevke · 5th February 2007, 15:18

Quote: (Originally Posted by decoweenie)

No, you don't get to play with cool things anymore for blaming the problem (wrongly) on the BMCL...

As long as Peter has HOT things to play with in Singapore I'm sure he won't mind missing COOL things

steven

magentaseas · 7th February 2007, 13:28

Hi
Ive had these breathing problems aswell. I dive with a Dolphin.
It mainly happens when Im head down, and the first time it happened I had a bit of a panic because I couldnt breathe, so bailed out, calmed down and went back on the loop and was ok.
It happened again (on the same trip) this time going down a shot line to 30m. As on OC I was going head first and again couldnt breathe, and the penny dropped, I wondered if it was due to the pressure difference causing me have to litterally suck the gas out of the lung.
Its not a nice feeling.

I also get the problem at the back of the mouth and nose, it feels like Im bunged up with a cold. I had a particularly uncomfortable dive when i might as well have been on OC!

Im still a novice on my SCR and the breathing is the only bit thats taken alot of getting used to.
People always mention about the difference with buoyancy when moving onto a rebreather but no one ever mentions the breathing.
All good fun

sharon

dave t · 7th February 2007, 14:42

Sharon
this is known as negative lung loading, common for back mounted counterlungs that are not in the right place!

Peter

when you experienced your problems did you have the BMCL side gussets open or closed?

Dave

**RichClark** · 7th February 2007, 14:46

Quote: (Originally Posted by dave t)

Sharon
this is known as negative lung loading, common for back mounted counterlungs that are not in the right place!
Dave

Dave,

Thats interesting, when you say not in the right place, I initially had the problem but resolved it my tightening my mask staps a bit.

Cheers

Rich

dave t · 7th February 2007, 14:59

Rich
I used to get a bit of negative lung loading on my kiss, it would only happen if I did a head down descent. I minimised it by moving the kiss higher on my back to get the top of the CL as close to my mouth as poss and changed my descent angle.

Evidently some humans are very sensitive to this negative pressure on the lungs and some of us not so.

Tightening your mask strap "shouldnt" make any difference but.........what works is what works right!!

Dave

PCDiver · 7th February 2007, 15:51

Quote: (Originally Posted by dave t)

Sharon
this is known as negative lung loading, common for back mounted counterlungs that are not in the right place!

Peter

when you experienced your problems did you have the BMCL side gussets open or closed?

Dave

Hi Dave,

The side gussets where closed (minimal loop volume). But I also had the problem with OTS lungs. Switching to a low volume mask seems to have cured it.

I'm probably very sensitive to it.

Two other things that could be related:
1. I can equalize without using my hands, even at the surface. Most divers I know cannot do this. Nice for filming. I can keep my hands on my camera.

2. I have major problems swimming without mask. It is almost impossible for me without closing my nose with my fingers. I ALWAYS dive with a spare mask.

Peter

18th September 2006, 13:16	#41 (permalink)
PCDiver Submerge Productions Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Feb 2005 Location: Belgium Posts: 968	Re: bizarre breathing problem Quote: (Originally Posted by decoweenie) Of course, I am still referring to the DT BMCL, and not the general BMCL system like CK, etc. They are totally different things (i.e. placement, confinement, etc). It is not my design, and I am responsible for you having one in the first place (thru Steven). So I want to make sure that all information posted are correct that only you have a problem with it, and a lot more people than just 2 diving the DT BMCL. So Dave T could still market it later if he wants to, it is his design. I am sorry that it didn't work out for you. I haven't given up completely.
(Online)

18th September 2006, 18:48	#42 (permalink)
decoweenie Crash Test Dummy Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Cairo Posts: 5,487	Re: bizarre breathing problem Quote: (Originally Posted by PCDiver) I haven't given up completely. Don't give up... It could be something really simple to fix, and it would just happen when it happens... __________________ "...after a while you get bored offering advice to a bull that like to keep butting the fence with its head rather than walking through the open gate..." - Rebreather World PM
(Offline)

5th February 2007, 12:19	#43 (permalink)
PCDiver Submerge Productions Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Feb 2005 Location: Belgium Posts: 968	Re: bizarre breathing problem Update. I still had this weird breathing problem from time to time with my OTS lungs and it really got on my nerves. I have been diving for the last year with a "big eye" mask. A week ago I switched back to my old, low volume Mares mask. I've done three dives since and so far no breathing problems what so ever. Time will tell but I'm hopefull that the problem is finaly solved. BTW - Mike, can you send me the lungs back?
(Online)

5th February 2007, 14:03	#44 (permalink)
decoweenie Crash Test Dummy Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Cairo Posts: 5,487	Re: bizarre breathing problem Quote: (Originally Posted by PCDiver) ...can you send me the lungs back? No, you don't get to play with cool things anymore for blaming the problem (wrongly) on the BMCL... __________________ "...after a while you get bored offering advice to a bull that like to keep butting the fence with its head rather than walking through the open gate..." - Rebreather World PM
(Offline)

5th February 2007, 15:18	#45 (permalink)
steevke Custom Title Allowed! Current Rebreather/s: Inspiration Vision Other Rebreather/s: Sport Kiss Join Date: Jul 2005 Location: Belgium Posts: 311	Re: bizarre breathing problem Quote: (Originally Posted by decoweenie) No, you don't get to play with cool things anymore for blaming the problem (wrongly) on the BMCL... As long as Peter has HOT things to play with in Singapore I'm sure he won't mind missing COOL things steven
(Offline)

7th February 2007, 13:28	#46 (permalink)
magentaseas New Member Current Rebreather/s: Dolphin Other Rebreather/s: Dolphin Join Date: May 2005 Location: London Posts: 56	Re: bizarre breathing problem Hi Ive had these breathing problems aswell. I dive with a Dolphin. It mainly happens when Im head down, and the first time it happened I had a bit of a panic because I couldnt breathe, so bailed out, calmed down and went back on the loop and was ok. It happened again (on the same trip) this time going down a shot line to 30m. As on OC I was going head first and again couldnt breathe, and the penny dropped, I wondered if it was due to the pressure difference causing me have to litterally suck the gas out of the lung. Its not a nice feeling. I also get the problem at the back of the mouth and nose, it feels like Im bunged up with a cold. I had a particularly uncomfortable dive when i might as well have been on OC! Im still a novice on my SCR and the breathing is the only bit thats taken alot of getting used to. People always mention about the difference with buoyancy when moving onto a rebreather but no one ever mentions the breathing. All good fun sharon
(Offline)

7th February 2007, 14:42	#47 (permalink)
dave t Custom Title Allowed! Current Rebreather/s: Inspiration Classic Inspiration Vision Evolution Sport Kiss Classic Kiss Dolphin Ray Azimuth Home Build Other Rebreather/s: Dolphin Ray Azimuth Home Build Join Date: May 2005 Location: UK Posts: 654	Re: bizarre breathing problem Sharon this is known as negative lung loading, common for back mounted counterlungs that are not in the right place! Peter when you experienced your problems did you have the BMCL side gussets open or closed? Dave
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7th February 2007, 14:46	#48 (permalink)
RichClark Classic KISS No. 226 Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Mar 2005 Location: Hove, UK Posts: 778	Re: bizarre breathing problem Quote: (Originally Posted by dave t) Sharon this is known as negative lung loading, common for back mounted counterlungs that are not in the right place! Dave Dave, Thats interesting, when you say not in the right place, I initially had the problem but resolved it my tightening my mask staps a bit. Cheers Rich __________________ The more I learn about women, the more I want to go diving... just don't tell my wife I said that To taste something a little different, try http://www.thechillikitchen.co.uk
(Offline)

7th February 2007, 14:59	#49 (permalink)
dave t Custom Title Allowed! Current Rebreather/s: Inspiration Classic Inspiration Vision Evolution Sport Kiss Classic Kiss Dolphin Ray Azimuth Home Build Other Rebreather/s: Dolphin Ray Azimuth Home Build Join Date: May 2005 Location: UK Posts: 654	Re: bizarre breathing problem Rich I used to get a bit of negative lung loading on my kiss, it would only happen if I did a head down descent. I minimised it by moving the kiss higher on my back to get the top of the CL as close to my mouth as poss and changed my descent angle. Evidently some humans are very sensitive to this negative pressure on the lungs and some of us not so. Tightening your mask strap "shouldnt" make any difference but.........what works is what works right!! Dave
(Offline)

7th February 2007, 15:51	#50 (permalink)
PCDiver Submerge Productions Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Feb 2005 Location: Belgium Posts: 968	Re: bizarre breathing problem Quote: (Originally Posted by dave t) Sharon this is known as negative lung loading, common for back mounted counterlungs that are not in the right place! Peter when you experienced your problems did you have the BMCL side gussets open or closed? Dave Hi Dave, The side gussets where closed (minimal loop volume). But I also had the problem with OTS lungs. Switching to a low volume mask seems to have cured it. I'm probably very sensitive to it. Two other things that could be related: 1. I can equalize without using my hands, even at the surface. Most divers I know cannot do this. Nice for filming. I can keep my hands on my camera. 2. I have major problems swimming without mask. It is almost impossible for me without closing my nose with my fingers. I ALWAYS dive with a spare mask. Peter
(Online)

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