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Post by spirou on Apr 4, 2024 22:30:33 GMT -8
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Post by pabloo on Apr 5, 2024 3:14:24 GMT -8
Hello Fred I am waiting for my own Marlin so real photos will be available during service opening...for now only that I have The best is that some time ago I managed direct contact the designer, Mr. Leszek Suchy and asked him about the construction of Kaiman and Marlin. In "free translation" ... " Marlin was a very good and easy to produce breathing regulator; the innovative concept of a balanced, co-rotating first stage of reduction fed high pressure to the unloading piston through the hole in the valve plug seal. As a result, breathing resistance was independent of the pressure in the cylinder. In the second stage of reduction, a co-rotating valve directed the air stream to the deflector which, reflecting the air inlet to the mouthpiece, created a venturi effect, supporting the flow and reducing breathing resistance. The biggest problems I had at that time in Poland were the lack of technology allowing the injection of the appropriate gasket material into the high-pressure plug, guaranteeing easy sealing -relatively soft material and the reliability of the sealing material- by bonding with metal, like vulcanizing rubber. So I used Teflon (Tetrafluoroethylene), an excellent sealing material, which unfortunately we could import only from the West in the form of a rod and shape in Poland only by turning. I achieved the reliability of the seating by the shape of the seal and its fastening with a nut. The advantage was the possibility of replacing it or reshaping the sealing surface In the Marlin first stage prototypes, I had 3 screws that allowed for pressure adjustment to adjust the pressure to the spring closing the second reduction stage. In production I intended to use only washers that would allow for determining the optimal regulation pressure also equip 1st stage with two reduced air outlets and a high-pressure connection to the manometer. " Regards Pawel
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Post by spirou on Apr 5, 2024 13:41:14 GMT -8
Hello Pawel,
It's nice that you could speak, with the designer of the kaiman, and Marlin. I would like to do the same.
The design of these regulators is simple' and efficient, to provide performance and reliability.
At this time it was not easy to produce some pieces, or products on eastern countries. I remember the latest years of general Jaruzelski.
The shape of the Marlin second stage is interesting, the deflector on the inlet mouthpiece, on the early aquilon (1963)la spirotechnique use a deflector very similar in square. If you go to Spiro vintage blog , you can see photos.
Cheer's
Fred
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Post by spirou on Apr 6, 2024 1:55:30 GMT -8
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Post by pabloo on Apr 6, 2024 8:44:07 GMT -8
Hello Fred Beautiful machine and will working well. I like "low tech" machines...I understand how are they work, I can service, even repair them sometimes. If you care them, they are safe and efficient enough for recreational using. There is the 1947 photo of French GRS divers equipped only with mask, fins , pants...and CG apparatus Those "early" divers have "iron balls" to dive even up to 60 m equipped like that...now diving is mentally different than before. Regards Pawel
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Post by spirou on Apr 6, 2024 9:43:39 GMT -8
Hello Fred Beautiful machine and will working well. I like "low tech" machines...I understand how are they work, I can service, even repair them sometimes. If you care them, they are safe and efficient enough for recreational using. I saw the 1950-60' photo of French GERS divers equipped only with mask, snorkel, fins , pants...and CG apparatus Those "early" divers have "iron balls" to dive up to 60 m equipped like that...now diving is mentally different than before. Regards Pawel I also like this kind of diving , just the tank with a regulator, between 10 to 15 metres it is really light. Here I am just 1kg weight belt, and 3mm wet suit. It s almost like the pioneer. My first dive i was almost like this . When I begin to dive in 1986 finally ( my father was already a diver but he do not want that I begin to young🤬) before I can just make free diving , but it was a very good school before scuba, so for my first dive I take the bottle , and I go alone and came back one hour later , my father was furious 🙄. pl p 002 by Patrick Michel, sur Flickr About the explorer it s almost finished, just IP a bit unstable, I found that kind of grease had influence, I would use crystolube ( oxygen grease) but a the end normal silicone grease is better with pistons, I must also ordered specific O ring in France, I think the size is not the one on the part list. But now it breath well , he really comfortable when I try , I shall see when I dive with it , but the "CLUB" ( take a look on the OCEAN test) a simple piston using the same second stage, was very pleasant when i made dives with it last year. Cheer's Fred
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Post by SeaRat on Apr 6, 2024 13:34:16 GMT -8
Hello Fred Beautiful machine and will working well. I like "low tech" machines...I understand how are they work, I can service, even repair them sometimes. If you care them, they are safe and efficient enough for recreational using. I saw the 1950-60' photo of French GERS divers equipped only with mask, snorkel, fins , pants...and CG apparatus Those "early" divers have "iron balls" to dive up to 60 m equipped like that...now diving is mentally different than before. Regards Pawel I also like this kind of diving , just the tank with a regulator, between 10 to 15 metres it is really light. Here I am just 1kg weight belt, and 3mm wet suit. It s almost like the pioneer. My first dive i was almost like this . When I begin to dive in 1986 finally ( my father was already a diver but he do not want that I begin to young🤬) before I can just make free diving , but it was a very good school before scuba, so for my first dive I take the bottle , and I go alone and came back one hour later , my father was furious 🙄. pl p 002 by Patrick Michel, sur Flickr About the explorer it s almost finished, just IP a bit unstable, I found that kind of grease had influence, I would use crystolube ( oxygen grease) but a the end normal silicone grease is better with pistons, I must also ordered specific O ring in France, I think the size is not the one on the part list. But now it breath well , he really comfortable when I try , I shall see when I dive with it , but the "CLUB" ( take a look on the OCEAN test) a simple piston using the same second stage, was very pleasant when i made dives with it last year. Cheer's Fred Notice how, with the regulator positioned down, the double hose regulator is actually in a better position in the water column than a single hose would be at the mouth. John
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Post by pabloo on Apr 8, 2024 4:46:32 GMT -8
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Post by SeaRat on Apr 8, 2024 8:21:54 GMT -8
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Post by pabloo on Apr 8, 2024 8:57:52 GMT -8
Hello John We did, yes and it's very good that you remind it. It's one of the underrated aspect of DH regulator using...look at the picture John In the position like this under water - some kind of work,the exhale will be easy but inhale... regulator is about 30 cm above "lung point" so it will be hard sucking work I think. What is your opinion ? Regards Pawel
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Post by SeaRat on Apr 8, 2024 9:20:59 GMT -8
Here's a photo of me taken by Sid Macken: DSC00286 by John Ratliff, on Flickr I like doubl tanks so that the regulator can be positioned as low as possible. 0617ABC6-1BD6-46B2-A933-AF654A2C8DD2 by John Ratliff, on Flickr The Cousteau quad-tank system allowed the double hose regulator to be placed low on their backs. Broxton Dive 8-10-2015-3 by John Ratliff, on Flickr I did a doff-and-don exercise in the river with my twin tanks and a DA Aqualung regulator. Getting it into this position gave the best breathing possible. IMG_1235 by John Ratliff, on Flickr Longer hoses, here on my Overpressure Breathing regulator by U.S. Divers (the predecessor of the Mistral), allows better positioning too. John
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cg43
Senior Diver
Posts: 90
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Post by cg43 on Apr 8, 2024 12:12:49 GMT -8
Hello Pavel , Hello John
You both should try diving with a front mounted regulator .
I did , just as Rebreather with front mounted breathing bag .
I don't like the positive pressure and highly likely this is true for many but not all divers ,
This may related to the breathing habits , or better to long rest's between the breathings .
For examble you can see this in the video from Cousteau " The silent World " .
But now we touch an controversial and dangerous topic . Pavel , you name it "mentally differenzes " .
Because this is not " Early European-Regulator! " I will start this topic in a new thread
in " Vintage Diving Instructions and Technique " .
Greetings Rainer
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Post by pabloo on Apr 9, 2024 3:08:57 GMT -8
Hello Pavel , Hello John You both should try diving with a front mounted regulator . I did , just as Rebreather with front mounted breathing bag . I don't like the positive pressure and highly likely this is true for many but not all divers , This may related to the breathing habits , or better to long rest's between the breathings . For examble you can see this in the video from Cousteau " The silent World " . But now we touch an controversial and dangerous topic . Pavel , you name it "mentally differenzes " . Because this is not " Early European-Regulator! " I will start this topic in a new thread in " Vintage Diving Instructions and Technique " . Greetings Rainer Hello Rainer You are right...we went our discussion on not correct thread...sorry of that The thread "Chest-Mounting Vintage Double Hose Regs" already exist: vintagescuba.proboards.com/thread/4935Best Pawel
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