Design opportunities in Cave Diving?

[deepairmike]

What we need is a weight that doesn't weight much in air passages.

[Dsix36]

Co2 monitoring already exists, and is not really that expensive. But it is not really needed. A properly maintained and packed unit should never be a problem. Your body will also tell you if you have a problem. Now if you could invent a solution for if that problem happened????

I don't know where you got that info, but many a rebreather diver is waiting to buy such a cheap and effective device. Oh wait was "effective" the key word there? In the rebreather's loop environment, there are problems with the simple and cheap sensors. By the time that your body tells you that something is wrong and there is a CO2 problem, it very well may be too late to be able to do anything about it. I am fortunate enough to have survived just such an issue, but do not know if I could do it again or not.

The solution to to make sure that it doesn't happen in the first place. Thus CO2 monitoring!!!

[Sludge]

Here's something that might be of some value: a cylinder that weighs the same full as empty.

It could have a section that is much less rigid than the actual cylinder wall - it expands when the cylinder is full, and gradually contracts as the cylinder is breathed. As an example, an 80 cubic foot cylinder could expand to approximately six more pounds of buoyancy when the cylinder is full.

If you got your buoyancy right you wouldn't need a BC.

[deepairmike]

And what caused this event?

[Dsix36]

And what caused this event?

Working too hard and overbreathed the scrubber.

[FW]

Let's see a photo of that reel?

If you mean Shirley's, check page 8 in "Blueprint for Survival". I suspect you have seen one before, in my van

[FW]

Working too hard and overbreathed the scrubber.

I did the same thing, see the IRAP, "Strange Symptoms". It is one of the early ones.

[sskasser]

Let's see a photo of that reel?

It's the one with the pretty pink line. It was and still is one of my most valued treasures, built and given to me by a wonderful friend....one with a long white beard ...but not this guy---->

[aainslie]

Here's something that might be of some value: a cylinder that weighs the same full as empty.

It could have a section that is much less rigid than the actual cylinder wall - it expands when the cylinder is full, and gradually contracts as the cylinder is breathed. As an example, an 80 cubic foot cylinder could expand to approximately six more pounds of buoyancy when the cylinder is full.

If you got your buoyancy right you wouldn't need a BC.

The device you described exists. It's called a..... BC

[JerseyJersey]

Sihrley, I have an enclosed reel. I foul it. Had this discussion with Forrest and unless he has a secret (and will build me one) that isnt in my reel... I can foul it......