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  • Matti Anttila IDA 59
    page also tells the story how this unit was build and why it can be extremely dangerous when used by people who are not specialists His experience offered the knowledge on how to modify this unit in the right way Before even thinking about using or adding a modification to this unit please understand that this is a complex unit that uses techniques that cannot be applied easily The oxygen mass flow valve is set in such a way that when diving this unit with standard sofnolime it will lead to hypoxia and death You need flow measurement equipment and a large knowledge of rebreathers before even thinking to go diving with this unit Diving this equipment without a continuous control of your pO2 is extremely dangerous and considered suicidal Matti made a page about his IDA 59 with fantastic pictures and explanation in English HERE Additional information here Additinal photos here Matti Anttila during his test diving in Finland with support divers for safety Photo courtesy of Sten Stockmann Layout of the complex gas addition system Testing building not for starters Matti Anttila s final configuration Oxygen addition is modified since no Super oxide is used The lack of

    Original URL path: http://www.therebreathersite.nl/06_Homebuilders/matti_anttila_ida_59.htm (2016-05-02)
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  • Alexey IDA72V
    internal supply I made my own Constant Mass Flow valve with metering valves from Camozzi http www camozzi com industrial pneumatic parts Overall view with IDA 59 scrubber attached to IDA 72 breath bag via hand made adapters installed and calibrated CMF Scrubber was fixed in place by rubber automotive spare wheel holder Here are two flowmeters from medical narcosis apparatus Left for Air 20 l min right for Oxygen 10 l min I use them to calibrate and check CMF Second stage Oxygen sensor Due to my wish to get some additional safety in my rebreather and troubles in buying Dr ä ger Oxygauge or some of it s kind I develop my own oxygauge system It was successfully tested in a hyperchamber when I was tested to Oxygen Toxicity This was done by breathing by 100 oxygen at pressure 1 5ati PPO2 2 5 in time of 90 minutes via oxygen mask The Entire hyperchamber was pressurised by air and a doctor that controls us do checks each 15 minutes The sensor showed adequate readings and fine predictable results PPO2 was 0 21 on clean air 0 52 pressurised by 1 5 bar air 2 5 in oxygen mask and excellently seen result 0 21 at end of decompression Sensor case parts were made from Van De Lande B V PVC fittings Here you see the disassembled sensor case and case cover Assembled sensor case case cap and case cap flat O ring Case and sensor insert The other side shows the sensor holder plate made in plastic Clearly visible is the pressurisation hole on the left side in the thread Sensor housing fully assembled That looks good Oxygen sensor Special diving sensors are hard to obtain in Russia So I use available from dealer Figaro KE 25 sensor http www figaro co jp en make html item 2 sen 112280 html It was relatively not so fast 12 seconds to 90 of measured but looks fine in practical testing Sensor cap and wiring inlet Wire was laid in Camozzi PVC hose because i want to pressurise indicator box from breath bag Handset opened Handset assembled Display and it s box Digital read out made by Velleman PM LED power supply by 9 volt alkaline battery 6LF22 due to supply current of PM LED indicator 60mA Box IP65 Gainta G203C www gainta com tw Power switch unknown Chinese made with rubber cap I checked the handset by placing it after the assembly into 0 5m deep water during 10 minutes So no leak in sight job was done fine Quiet cheap device overall cost less than 150 Third stage SMG SCR Self Mixing Gas SCR Nitrox was unavailable here in Russia because 84 84 PVS 84 Diving Service Rules by 1984 year official naval diving rules prohibits nitrox diving Due to unavailability of Nitrox i try to develop some kind of Self Mixing Gas SCR I think mixing in breath bag oxygen and air in proper amounts provide

    Original URL path: http://www.therebreathersite.nl/06_Homebuilders/alexey_ida72v.htm (2016-05-02)
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  • Jan Bruggeman
    original Dräger first stage operates on a higher intermediate pressure as a regular first stage I had to change the ADV spring for a lighter one The other 2 hoses on the first stage are for pressure gauge and for wing inflator bailout regulator Oxygen is added thru a regulator picture extreme left which has been adapted to give a fixed intermediate pressure From there it goes to the kiss valve picture second from left which provides the loop with a constant flow of oxygen The valve also contains a shut off and a bypass button The other 2 hoses on the oxygen first stage are for pressure gauge and oxygen bailout regulator 4 The electronics Nothing special just a triple 02 meter No logic inside And not really fully triple redundant only one battery one casing one cable All single point of failure s 5 And the regular stuff I use my old back plate and wing The wing has an Air2 as inflator piece which will also be usable for my on board diluent bailout How to fit all this toghether First put the breathing loop inside the box Attach the mechanics to it Here you see one

    Original URL path: http://www.therebreathersite.nl/06_Homebuilders/jan_bruggeman.htm (2016-05-02)
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  • Le Joky MCCR
    le dos Inox découpé au laser Le système de fixation des blocs s adapte à toutes les tailles Les deux petits boîtiers marqués par du scotch de couleur ne sont pas des afficheurs mais servent d adaptateurs entre les connectiques du VR3 rEvodream et la tête où se trouvent les cellules En passant on notera les protections de robinet mCCR JOKY Airtess en configuration dorsale Contrôle de la Ppo2 rEvodream et VR3 Contrôle de la Ppo2 rEvodream et VR3 Les deux petits boîtiers marqués par du scotch de couleur ne sont pas des afficheurs mais servent d adaptateurs entre les connectiques du VR3 rEvodream et la tête où se trouvent les cellules En passant on notera les protections de robinet Circuit O2 On apperçoit l astucieuse adaptation pour relier le rEvodream à la connectique du JOKY Détails du rEvodream et de la vanne KISS En jaune diluant vanne KISS dernière génération En vert O2 vanne KISS buse réglable Swagelok En sortie connecteurs étanches Swagelok QC La tête avec sa protection inox usage spéléo oblige Les supports en plastique accueillent les adaptateurs de liaison 3 entrées injections O2 diluant arrivée au by pass Pratique deux bouchons ferment le circuit Circuit diluant

    Original URL path: http://www.therebreathersite.nl/06_Homebuilders/le_joky_mccr.htm (2016-05-02)
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  • Teknosofen Norge III
    supply right is O2 left is dil Modification of the regulators stopping the CMF flow etc etc adding a certain amount of electronics worth a separate discussion and much more Yes the unit has been dived I am now modifying the harness to improve the possibilities to carry a reasonably sized bailout Å Hälsningar Åke Larsson Please check Åke Larsson s great website here Menu homebuilders Updates Speedmenu Search page

    Original URL path: http://www.therebreathersite.nl/06_Homebuilders/Teknosofen%20Norge%20III.htm (2016-05-02)
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  • Draeger Black Dolphin mCCR
    11 39 MD however these do not fit in One should pay attention when using the rEvodream oxygen gauges the thread has to be PG7 rEvodream O2 uitlezers CCR HUD leest 2 cellen SCR CCR HUD leest 1 cel rEvodream O2 read out CCR HUD reads 2 cells SCR CCR HUD reads one cell Op de zuurstof fles zit een ontspanner met vaste middendruk die dus niet beïnvloed wordt door de omgevingsdruk Hier door blijft de ingespoten hoeveelheid O2 constant ongeacht de diepte want het zuurstof verbruik wordt enkel beïnvloed door de inspanning van de duiker en niet door de diepte De natte kamer van de eerste trap wordt afgesloten door een plug met O ring waardoor de middendruk niet meer kan veranderen De ontspanner Apeks DS4 en de plug is te verkrijgen bij Tec Me The oxygen cylinder has a first stage with a fixed IP which is not influenced by the ambient pressure Thus leaving the injected O2 steady irrespective of depth as the oxygen usage only depends on the divers physical exertions and is not influenced by depth The regulators wet chamber is being closed by an O ringed plug that prevents the ambient pressure from changing The Apeks DS4 first stage and the plug can be obtained from Tec me Dit is het hart van de rebreather het Hydrogom ventiel Dit laat constant een vooraf instelbare hoeveelheid zuurstof in het systeem lopen iets lager dan het metabolisme van de duiker Met de manuele bypass aan de zijkant kan de duiker extra O2 in de ademlus inspuiten This is the heart of the rebreather the Hydrogom valve This constantly allows an adjustable flow of oxygen into the system slightly lower than the divers metabolism Additional O2 can be injected into the loop via the manual bypass on the side Om de juiste O2 flow in te stellen moet de middendruk van de eerste trap op de zuurstoffles bijgeregeld worden Als het debiet juist ingesteld is dan zal de PPO2 ongeveer stabiel blijven maar zeker nooit stijgen als de duiker volledig in rust is bv zittend in de zetel Bij een lichte inspanning bv wandelen zal de PPO2 lichtjes dalen en bij zwaardere inspanning bv de trap op spurten zal de PPO2 sterker dalen en moet de duiker de bypass bedienen bij het instellen van de juiste flow hebben we een flowmeter nodig De flow is plus minus 0 8L per min de zuurstof wordt rechtstreeks in de canister geïnjecteerd In order to determine the correct O2 flow the oxygen cylinder s first stage s ambient pressure is to be fine tuned In case the flow rate is set correctly the PPO2 will remain constant it will certainly not increase if the diver is fully in rest for example sitting on a couch Light strain for instance walking will cause the PPO2 to decrease a bit and heavy strain for instance running up the stairs will cause the PPO2 to decrease much more the diver will have to

    Original URL path: http://www.therebreathersite.nl/06_Homebuilders/Kristiaan_Slootmaeker.htm (2016-05-02)
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  • Johan Pretorius IDA-72 MCCR
    of the oxygen manifold and installing of a depth compensating 1 st stage on the one cylinder in conjunction with a manual add valve and using the capped DS4 for the CMF on the other cylinder When the CMF stops working at 80m theoretically the user will be able to manually add Oxygen to the system via the 2 nd depth compensated 1 st stage effectively turning the oxygen supply into a demand supply On ascent the CMF will take over the Oxygen supply when the pressure decreases this will also offer redundancy in the Oxygen supply for dives involving long decompression I noted that Copper Oxide the green stuff you see on copper and brass fittings may become a problem in future The alternative is to have the brass and copper parts chromed That will be the final step in the completion of the system Close up of the IDA 72 BIG scrubber in place with the Oxygen manifold and DS4 1 st stage Close up view of the Oxygen manifold and capped DS4 The blue scrubber is a IDA 71 scrubber with a slight modification The Oxygen manifold and installed DS4 1 st stage is clearly visible with the CMF on the right hand side of the table The male QC for the dilluent supply is visible on the left hand side of the SPG Close up of the gas supply system On the left is the Dilluent manifold Bottom is the DS4 and the Hydrogom CMF valve The hose on the right is the Oxygen addition to the counter lung from the Hydrogom valve note the copper oxide already forming on some brass parts Chroming of the parts may be a solution PPO2 Monitoring The mantra of all Rebreather divers Always know your PPO2 Although the MCCR IDA 72 uses a CMF Constant mass flow Valve to bleed Oxygen into the loop it is still vital to be able to monitor the PPO2 in the system so that the diver can make the necessary adjustments to the gas he she is breathing A rebreather is in effect a Nitrox Trimix factory carried on the divers back Using the same tried and tested method used in the conversion of the Franken son and relatives I opted for installing a P connector system and independent PPO2 monitoring The question has always been how many PPO2 displays do you really need I opted for a very simple solution to this perceived problem I installed only two independent PPO2 displays and my diving philosophy is simple If at any stage during the dive both PPO2 monitors do not give me the same reading I bail out and do an ascent on bail out gas which I carry in an AL 80 cylinder as a sling stage cylinder No discussions no loop flushes No funny stuff It is just not worth it rather come back tomorrow If my dive buddy has a problem with that I will find a new dive buddy Two independent R22D Oxygen cells do the monitoring and the displays are read from two independent monitors I am utilising one home built PPO2 display that a friend of mine makes and the second is my VR3 dive computer that doubles as PPO2 verifier and deco calculator To solve the problem of two cables coming out of the machine and lying everywhere except where they should the cables are fed through 25mm tubular webbing which protects the cable and helps with clean neat routing The two Drager female P connectors installed in the counter lung The Oxygen inlet can be seen protruding just under the right Counter Lung attachment Two independent PPO2 monitors VR3 home built PPO2 monitoring installed Tubular webbing can be seen ensuring neat routing and protection of the monitor cables Scrubber Modification The IDA 72 has a HUGE scrubber It must be seen to be believed It holds approximately 5 Kg of sorb with dimensions that are about as big as a shoe box The 5 Kg of sorb should be equal to about 5 hours of continuous diving in our cold Atlantic water although your mileage may vary This is a complete overkill for most sport diving but the unit was originally not designed for sport diving It was designed to handle the gas volume at 200m which is equal to 21 BAR absolute pressure when the diver engages the Trimix bail out option This meant that using the BIG scrubber exclusively would result in a waste of sorb as I am not a great fan of re using and leaving the same sorb in the scrubber for too long as it is cheap enough to warrant often change well cheaper than a life definitely The IDA 71 has a very efficient scrubber canister which holds approximately 2 1 Kg of sorb which is more than adequate for a weekends rebreather diving to depths less than 30m I decided to have an adapter made up to allow me to use the IDA 71 scrubber with the IDA 71 A straight forward fit is not possible as the scrubber connection hoses of the IDA 72 are of a much larger bore than the IDA 71 even though they have the same type thread The adapters were turned up from Delrin which screws down on to the IDA 71 scrubber and fits the IDA 72 scrubber connector hoses This allows me to use a smaller and lighter IDA 71 scrubber for normal shallow water diving but still allowing the full use of the machine s BIG scrubber for serious deep or long dives should I choose to use it IDA 71 scrubber with adapter to fit IDA 72 scrubber connector hoses Close up of IDA 71 scrubber with adapter to fit IDA 72 scrubber connector hoses Scrubber connector s fitted to the IDA 72 counter Lung IDA 71 scrubber fitted into IDA 72 chassis with scrubber adapters in place IDA 72 with Oxygen manifold DS4 and BIG scrubber

    Original URL path: http://www.therebreathersite.nl/06_Homebuilders/Johan_Pretorius_IDA72.htm (2016-05-02)
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  • Kiss style Closed Circuit Rebreathers
    2Manual Oxygen Bypass Picture Michael Kuwilsky Click for lager view Original flow restriction KISS manufacturer Click to enlarge In tegenstelling tot geregelde systemen is in de KISS rebreather geen computer aanwezig De duiker doseert slechts het tekort aan zuurstof of verdunt met diluent Voor de bewaking van de partiele zuurstof druk wordt gebruik gemaakt van drie volledig gescheiden en onafhankelijk werkende partiele zuurstof displays De werking van deze displays is uitzonderlijk simpel Een cel meet in de loop en geeft een spanning af aan een voltmeter die een eigen batterij heeft voor de digitale weergave van de gemeten partiele druk De callibratie vindt plaats door 100 zuurstof in de loop te injecteren Met een potmeter wordt de uitlezing van de displays ingesteld Een alarm is in de KISS rebreather niet voorhanden Unlike the Inspiration or other electronic controlled rebreathers there is NO computer present in the KISS rebreather The diver only adds oxygen when the setpoints are low or blends with dilluent This occurs in case of hard work or ascending To guard the setpoints the KISS system is equipped with three totally independent oxygen partial pressure displays These displays work extremely simple An oxygen cell is fitted in the loop and induces a small voltage which signal is displayed on a LCD with a separate battery This is done three times This way there are three independent measurements In order to calibrate the cells pure oxygen is injected into the loop With a potentiometer the display is calibrated In the KISS rebreather there is no alarm system available Het principe van de KISS rebreather wordt door een vrij grote groep Rebreather duikers toegepast om bestaande systemen veelal SCR om te bouwen naar CCR Het is echter van bijzonder groot belang terdege te studeren hoe deze modificaties dienen te worden uitgevoerd Het gebruik van dit type rebreather vergt een speciale opleiding bij een erkende instructeur The principle of the KISS rebreather is used by a rather large group of rebreather divers in order to rebuilt there mostly SCR rebreather to a closed circuit system It is of great importance however to study the principles intensively before you modify your system The use of this type of rebreather demands a specialised training from a certified instructor Gordon Smith homepage Jetsam Dave Sutton s Review http ccrdiving com teardown asp KISS TEARDOWN new Following pictures are showing the original KISS rebreather manufactured by Gordon Smith Gordon Smith with his KISS rebreather Frontview original KISS rebreather Set of KISS rebreathers ready for delivery Foto thanks to Dave Sutton old KISS Bailout Mouthpiece Topview of a KISS rebreather Foto is clickable for enlargement Here you see a serie of foto s of the rebreather LV1 lustiger versuch 1 made by Michael Kuwilsky Here are extra pictures sent by Gordon Smith on the new developed mouthpiece Here are extra pictures sent by Kerry McKenzie the KISS style oxygen addition system Thanks Kerry Kiss ans Baby Kiss rebreathers sent by Stephan New Baby Kiss sent by Stephan Rainer Degner sent me this Kiss configuration Rainer Degner sent me this Kiss configuration Prototype Kiss Valve made by Marc Burgers Netherlands Definitive version in stainless steel Prototype Kiss Valve made by Marc Burgers Netherlands Definitive version in stainless steel Prototype Kiss Valve made by Marc Burgers Netherlands Definitive version in stainless steel Prototype Kiss Valve made by Marc Burgers Netherlands Definitive version in stainless steel Prototype Kiss Valve made by Marc Burgers Netherlands Definitive version in stainless steel Prototype Kiss Valve made by Marc Burgers Netherlands Definitive version in stainless steel Prototype Kiss Valve made by Marc Burgers Netherlands Definitive version in stainless steel Dr Sven Olaf Dahl sent me his site with a Atlantis CCR Kiss rebreather Nice pages found here Link Recently Daniel R Fountain sent me a link to his homemade Kiss rebreather Recently Daniel R Fountain sent me a link to his homemade Kiss rebreather Recently Daniel R Fountain sent me a link to his homemade Kiss rebreather Johan Duits rebuild his standard Dolphin to a MCCR using Gordon s mini Kiss Check this page Recently Dave Sutton wrote a nice explanation on the Kiss style working principle He was kind enough to allow me to publish it here I am sure it will add something to a better understanding Thanks Dave Text Dave Sutton It s not that complex so here goes The term KISS as used for rebreathers was coined by Gordon Smith who first began using this system for diving rebreathers in his KISS keep it simple stupid rebreather The term KISS is out of courtesy reserved for those rebreathers and components made by him If you copy it you are diving Kiss Style The use of the term isn t law it s courtesy to Gordon who deserves all of the credit for introducing this method of operation into widespread use The system relies on the fact that for each person there exists a basic 02 metabolic need which only varies slightly over the course of any time period The numbers seem to range between 0 8 and 0 9 litres of 02 per minute when that volume is measured at 1 Atm surface pressure Actually we don t need any volume of 02 at all we need x molecules of 02 per minute and at the surface that amount is contained ina volume of about 0 8 litres At 33 feet 2 ATMA0 the volume of 02 needed would be half of that but that volume would be twice as dense thus the number of molecules is the same as the 0 8 litres at the surface You can continue this down to any depth What is done to dive KISS System is to produce a very small constant mass not volume freeflow of 02 into the loop that is and this is VERY important slightly LESS than that needed by the diver You want the PP02 to be constantly dropping down slowly and NEVER want it to be

    Original URL path: http://www.therebreathersite.nl/11_Closed%20Circuit%20Rebreathers/kiss_style_closed_circuit_rebreathers.htm (2016-05-02)
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