Which ccr rebreather

The rebreather comes ready to fly right out of the box. Fill it with gas and sofnolime and serious adventures is just about to begin. It gives the diver a versatile rebreather, still very easy to handle as well as to deal with before and after operations.

It is a rebreather built by divers and diving engineers. All components has a purpose and every detail can be justified in order to perform as a system helping the diver to reach his goals. Type Axial standard Soda lime: 2. Parallel operation for the solenoid Volume of the counter lungs: 8 litres Maximum application depth: Max. Which rebreather? CCR Liberty by Dive Soft What would happen if you were exploring a deep wreck and a jagged piece of steel tore away one of the computers circled in red?

Hollis Prism 2 The Prism 2 is a fully closed circuit Rebreather, ideal for exploring open ocean, cave, or wrecks. Diving Equipment Brands for Sale. Living the dream!! Member of the following Agencies. We did look at using polycarbonate Lexan which is literally bullet proof but found it crazed and crumbled into small pieces when exposed to hydroxides. It would of course be easy to make the whole thing out of PVC, but I feel the advantage in being able to see condensation, water, and the condition of your absorbent more than outweighs the non-problem of smashing heavily into things while going backwards.

Beckman offered a fiberglass fairing for those who might be concerned with this, and of course some then bought it because they liked the way it looked and others did so because they felt that if it was offered they probably should get the complete setup.

A final aside for homebuilders: The Electrolung was really a homebuilt which became a commercial product. It was built entirely with a drill press, lathe, and jigsaw, plus a bench grinder for shaping and sharpening lathe tools as the only power tools. For anyone attempting to build any kind of underwater equipment, a metal lathe is really a must. You can easily make all kinds of cylindrical housings, O-ring sealed fittings, ports and closures, and any kind of threaded fitting you might need with one.

For another few hundred dollars, you can also get a milling attachment as well, which is a useful addition. Teaching yourself how to use it is not hard. Good textbooks which cover this kind of machine tool work are readily available and easy to follow.

Here is the Electrolung patent. It contains much more detail including various drawings. Although development of the Electrolung was interesting, even exciting, in itself it was just an interesting incident in a bigger, far more interesting, and significant picture.

The larger perspective on what is taking place right now tends to be somewhat obscured by the ordinary events of living. Except for rare instances, whatever we are doing, however interesting and exciting it may be, tends to still feel like life, not like history in the making. In retrospect however, I have come to realize that from the mid s through the mid 70s, something really remarkable was taking place in diving. During that period, diving grew from the obsession of a small group of generally impecunious young people mostly in Florida, California, France and Italy to a global industry catering to well-to-do hobbyists.

Remote tropical islands all over the world began to sprout airports and dive operations and diving became strongly oriented to travel to exotic locations. Though all this was in itself remarkable, something truly unique was at the real heart of what was happening. For the first time in history, humans could freely enter, explore and personally experience the oldest, richest, most beautiful and exotic communities in nature, tropical coral reefs.

Coral reefs are truly remarkable places. Nowhere else can one experience such an abundance and diversity of life. Nowhere else is it so colorful, exotic and so easily experienced at close range.

Diving on a reef is like a trip in a time machine to a time before humans existed and nature ruled in primeval pristine abundance. Fossils of many reef creatures from as much as 60 million years ago are essentially the same as those on reefs now.

In fact, some Pacific reefs have existed as reefs for that period of time. For a biologist, being among the first to dive on reefs was a most extraordinary experience. In a way, it was a bit like landing on another planet. On nearly every dive, we were going where no human had ever been before. The discovery of phenomena of life, as well as strange and beautiful creatures whose existence we never even suspected was an everyday occurrence.

At the time this kind of experience was so commonplace, tropic seas so vast and remote, and so few people were doing it, that it began to seem as if this was just the way things were, and this kind of experience would continue on indefinitely.

Already, however, this era has become history. Although there are vast amounts still to be discovered about the details and inner workings of reefs, still undiscovered species are getting harder and harder to find and remote locations are becoming less and less remote.

The experience of being among the first to explore the richest realm of nature has come and gone, not to be repeated. On reefs, one niche still remains. Actually it is a really big one. Although it is not as rich in life as the shallower regions, it is still incredibly rich in life and is an area about which we know very little.

As far as I am aware in , the only person on the planet regularly exploring this zone is icythologist Richard Pyle. What he is doing is really exceptional, and he is doing it essentially on his own. While discussion on the Rebreather List is largely restricted to the technology and physiology as an end in itself, what Rich is doing goes well beyond this. As well as making more deep free dives than anyone ever has before, he is coming back with knowledge and specimens from every dive.

I have never met him personally, and am commenting only out of recognition of something exceptional. Over the past 25 or 30 years advances in diving technology have been almost entirely small and incremental. The only real exception I can think of is the development of dive computers. It appears we are up against the realities of human physiology. With every increase in depth and bottom time, the cost, complexity, effort, and risk increases exponentially while the return of useful achievement remains more or less linearly related to bottom time.

The future, it seems, lies in other directions—especially robotics. Here the advances have been impressive, and future development promises to become even more so. It is not hard to foresee that in a few years most of what we do at great effort and risk by diving can and will be done by nerds at consoles. Long term prediction, no matter how well reasoned and seemingly inescapable, has a way of almost always being wrong. So much so that I have often wondered if beneath the facade of Newtonian certainty of our universe, somewhere in the iffy probabilistic realm of quantum mechanics, there is not a relationship which dictates that the very act of prediction sets in motion forces which generate a different outcome.

How did Starck and his colleagues manage their Electrolung decompression? To become a member and access our treasure trove of dive history, visit us at: www. Proudly sponsored by Divesoft Original magazine with two Divesoft inserts. Walter Starck is one of the pioneers in the scientific investigation of coral reefs. Since , his home has been in north Queensland, Australia. Throughout his career in marine biology, participating in expeditions around the world, Dr.

Starck has been extensively involved with development of the technology required to facilitate his activities. In several instances patented inventions and commercial products have resulted. In addition to the optical dome port and the Electrolung other noteworthy achievements in this area have been: The Bang stick, a hermetically sealed underwater firearm for hunting and defense.

Underwater housings for numerous cameras and instruments. Underwater lighting systems. A multipurpose commercial waterproof electrical connector. Design of the unique research vessel El Torito, a 9 meter high-speed diving launch, a 24 passenger eco-tourism vessel, and the Oceanic Longboat.

The longboat was a long narrow high efficiency powerboat inspired by the efficiency of the log canoes of the Solomon Islands. He has also built and flown an amphibious aircraft of advanced canard wing design using high technology composite materials. Recently Aug he was senior author on an extensive update on the Alligator Reef study that brought the total species list for that locality up to species.

Starck has authored over articles and books, which include numerous technical and peer reviewed scientific studies as well as many articles in leading popular publications.

His photography has been widely published in conjunction with his writing, and he has produced nearly 20 films and videos. How much kit does it take to safely explore the underwater world?

We celebrate our innate gearheadedness with British photo Issues V 3. Connect with us. Share Tweet. Published 12 months ago on December 1, By InDepth. Photo courtesy of the US Deep Caving Team However, it took the fledgling tech community at least a decade to adapt mixed gas technology for open circuit scuba, including establishing the necessary supporting infrastructure, which was the first and necessary step in the move to rebreathers.

Buddy Inspiration advertisement from Courtesy of AP Diving. Your Geeky Holiday Guide. Related Topics: CCR christmas dive gear equipment featured gear comparison holiday guide rebreather diving Rebreathers sidemount V 2. Up Next Get your Trimmings right this Christmas. You may like. Published 2 months ago on September 2, By Walter Starck Header image: W. Starck This article was first published in serial form on the Rebreather Email List in July , at the suggestion of Dr.

The author in explaining the operation of the Electrolung. Polarographic oxygen sensors. Left, bare sensor. Middle, sensor with silicone rubber boot pushed half-way down over teflon membrane. Right, sensor and boot in sensor holder. Boot O. Cathode center is platinum. Anode outer is silver. Electrolyte groove is between. Body is epoxy. Electronics section.

Solenoid and sensors at left, wrist display above. Leads to wrist display are inside hose covered by SS braid connecting to the electronics section at ambient pressure. Battery holder and base plate sponge rubber pad has come loose from base plate in photo. Audible alarm is at right. This is on the opposite side of the longitudinal bulkhead from the electronics. Connection for O 2 to solenoid is at lower left.

Wrist display of three edgewise panel meters. Jon Kanwisher wearing the Electrolung. Mouthpiece valve assembly viewed from front. Mouthpiece mounts at top back. Close-off is actuated by lifting the lever at right. Bottom hose goes to counterlung.

Right and left hoses go to and from the absorbent canister. Mouthpiece parts. Body is teflon coated cast aluminum, other parts PVC. Threaded parts are sealed with non-acidic silicone sealant. Inlet check valve is in the PVC part at left. Outlet check valve is inside the body just above the hose connection at middle right. Close-off valve is at top. Backpack viewed from behind. Inert gas cylinder on left, O 2 on right, absorbent canister between. Electronics section at top.

Breathing hoses attach on the opposite side just below the electronics bulkhead. Bottom of absorbent canister. Note spring loaded bulkheads and screen to retain absorbent, central gas inlet tube from above and tie rod which threads into top of electronics section holding everything together.

Top of absorbent canister looking into space where sensors and solenoid fit when assembled. Inhaled gas comes in on right, down the central tube to the bottom, then back through the absorbent, past the sensors, and out to the mouthpiece via the opening on the left. Note top absorbent bulkhead in background and threaded top end of central tie rod in foreground. The shoulder in main cylinder is because acrylic tubing varies somewhat in size and we machined it out to a standard I.

Front side of Electrolung backpack showing shoulder and waist strap arrangement. Adjustable tabs carrying the twist studs for attaching the counterlung at the shoulders and waist provided for its positioning adjustment.

The author in the Electrolung showing the counterlung. Note the absence of open circuit bailout. Diver with Electrolung. Note pink Baralyme absorbent. The acrylic bubble was being used for a shark cage. A review of the developments before the Electrolung including the work of Alan Krasberg. Continue Reading. Thank You to Our Sponsors. Latest Features. Latest Features 2 weeks ago. Community 2 weeks ago. Education 2 weeks ago.

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