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Post by spirou on May 2, 2024 10:46:28 GMT -8
So i begin, to look the R2's. One is in original configuration, the second is a bit different. IMG_20240502_140103_756 by Patrick Michel, sur Flickr I am gone look carefully every things. Phil modified one diaphragm to adjust the IP, and others... things I think that I am gone begin with the original version, to learn the reg. Cheer's Fred
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Post by vance on May 2, 2024 16:34:19 GMT -8
You may find that the IP with an oem diaphragm and pin interface has a high IP, in excess of 150 psig. This will give you problems when trying to get a second stage seal at a low enough cracking pressure. That's why I did my experiments with an adjuster. There's a way, and I have done it.
More to follow.
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Post by spirou on May 2, 2024 20:17:49 GMT -8
You may find that the IP with an oem diaphragm and pin interface has a high IP, in excess of 150 psig. This will give you problems when trying to get a second stage seal at a low enough cracking pressure. That's why I did my experiments with an adjuster. There's a way, and I have done it. More to follow. I also see that you put diffrent levers in the box, when you made the modified lever with USD puck support, you modified also the high of the nozzle, to compensate, the thickness difference of the lever, as you written before in this thread.
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Post by SeaRat on May 2, 2024 20:58:09 GMT -8
With the R-2 you have an unbalanced diaphrigm first stage. That means the IP will increase as the tank pressure decreases. Therefore, you need to adjust the IP so that it is correct at about 500 psi. To do so on a full tank will cause the IP to be too high at low tank pressures.
The other thing is that the nozzle is pointed at about the 3:00 position in relation to the intake horn. The flow will therefore hit the side of the box, divide in two, and scoot around to the intake horn. Because there is an asymatry in this, it may cause a bit of a Venturi effect, even though the nozzle is oriented away from the intake hose. I’m pretty sure this was to preclude U.S. Divers Company from saying that Dacor had infringed on the Aqualung patent for the Broxton (DA Aqualung regulator).
John
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Post by spirou on May 3, 2024 2:44:57 GMT -8
With the R-2 you have an unbalanced diaphrigm first stage. That means the IP will increase as the tank pressure decreases. Therefore, you need to adjust the IP so that it is correct at about 500 psi. To do so on a full tank will cause the IP to be too high at low tank pressures. The other thing is that the nozzle is pointed at about the 3:00 position in relation to the intake horn. The flow will therefore hit the side of the box, divide in two, and scoot around to the intake horn. Because there is an asymatry in this, it may cause a bit of a Venturi effect, even though the nozzle is oriented away from the intake hose. I’m pretty sure this was to preclude U.S. Divers Company from saying that Dacor had infringed on the Aqualung patent for the Broxton (DA Aqualung regulator). John Hello John, Thanks, I will proceed like a DA for IP settings. The patented of the aqualung was a problem for those who want to produce diving regulator, in fact healthways, and DACOR tried to find another way. If you look the patented of the 2500 exhaust mushroom valve was a very good solution, used by healthways ( scuba de luxe) and nemrod ( snark3). Strange that at the beginning neither Spiro cg45 or DACOR , do not placed the nozzle close to the inhale intake. Finally USD place the nozzle juste in front of the inhale intake with the last navy approved ( those with orange label), and DACOR do the same with the R3. Edit: by the way I don't remember where read that. It seems that may be Gagnan on the CG 45 place the nozzle second stage on the other side of the inhale intake, to prevent free flow. Excess of care the end... Respectfully Fred
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Post by vance on May 3, 2024 6:46:20 GMT -8
I don't know if this was the main reason for placing the second stage 90 or 180 degrees away from the intake horn, but I've read that some of the early divers were concerned about "wasting air" if breathing was too easy.
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Post by spirou on May 5, 2024 5:37:47 GMT -8
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Post by spirou on May 5, 2024 5:45:38 GMT -8
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Post by vance on May 5, 2024 7:49:10 GMT -8
Very nice! I hope the dive test goes well.
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Post by spirou on May 5, 2024 8:39:37 GMT -8
Very nice! I hope the dive test goes well. I am gone try to dive As soon as possible. I must also try the R4, that you send few month, when I prepare this reg before the dive I notice that there is leak somewhere (diaphragm), so I corrected the issue, now he is ready. I think that I gone make two little dive to compare R2 and R4, I try in surface, I feel the ventury with the R4 but nothing with the R2, but I must not suck hard in the mouthpiece to received the air. As you like to modified regulator for better performance, I think that r2's lever with the second stage seat could be 4 or 5 mm longer. The cracking should be lower, the effort to maintain de demand of air also. Cheer's Fred
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Post by spirou on May 5, 2024 10:54:54 GMT -8
This regulator is amazing, there no gasket, just three diaphragms.
I'm just used screwdriver, clips pliers, spanner, and skills, and patience.
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Post by spirou on May 18, 2024 8:12:59 GMT -8
Good morning,
Today I dove with the dacor R2 that Phil sent me. I had checked everything before leaving for the diving spot, tank at 2400psi..., but when I put pressure on the regulator, I heard a little "paf", then a very little "pffff". In short, a small leak on the HP diaphragm. as I had not taken a reserve DH. the leak being limited and stable, I decided to go there. I quickly geared up and got into the water. The first minutes it's another world, compared to a mistal, where a DAAM, you have to pull to get air, I tested the regulator just after reassembling it, and I immediately felt that you had to pull for air, but after a few minutes you got used to it. After 40 minutes I surfaced. I descended to 53 ft. Conclusion, the pioneers knew how to breathe, I really liked it, it takes a little getting used to and realizing that we manage efforts differently, and that we can't do anything , It is not like a regulator with ventury assistance. Exhaling at a normal rate is very pleasant. But I stayed constantly with an eye on my SPG, to finish the dive with a little over 500 psi.
Cheer's
Fred
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Post by spirou on May 18, 2024 8:25:41 GMT -8
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Post by nikeajax on May 18, 2024 11:31:11 GMT -8
Mon Ami, did we warn you not to separate the valve-body from the main-body? (Yes, I know this is a different reg) This can be a "muther forklift" to get sealed up again, please make sure that's not the area of the leak JB
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Post by spirou on May 18, 2024 12:14:48 GMT -8
Mon Ami, did we warn you not to separate the valve-body from the main-body? (Yes, I know this is a different reg) This can be a "muther forklift" to get sealed up again, please make sure that's not the area of the leak JB Hello my friend, Thanks for the information 😉 I read somewhere, that it is sealed in factory. So I let them in peace 🕊️ I think the problems comes from the sealing of the second stage, it must be aLP leak , it is on the side of the second stage even I use Teflon , may be not enough. Cheer's Fred
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