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Post by spirou on Jul 10, 2023 9:18:27 GMT -8
Hello here are two conversion from Phil. A titan convert to Trieste and the Dacor 2020, It makes a long times that I have not dive the Trieste but with the last adjustment , the Trieste breath very well, light in inhalation, and with a strong ventury. The Dacor give me all the air that I need but, during the dive I breathe fast and deeply to test the reaction of the regulator, and I have the sensation that it can not give all. The design of this old version must be the reason the lever go to IP ADJUSTING screw, the new design is better IMG_20230710_182739_086 by Patrick Michel, sur Flickr IMG_20230710_182952_710 by Patrick Michel, sur Flickr
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Post by spirou on Jul 11, 2023 12:25:38 GMT -8
Hello.
Today, after work, I am going to do a little dive, same config that with Dacor 2020, but I used this time a Spiro RM. Impressions can be very subjective, during the dive I make the same test than with the Dacor 2020, and .... finally no big differences between the two regulator, when I inhale fast and stong. In fact I think that the ventury is well controlled on both, with no over running.
Fred
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Post by Aquala1 on Jul 11, 2023 14:32:54 GMT -8
I dove the “Vance Subsea Technologies” 😀 Black Fifty Fathoms this morning and had it down to 98 feet. It breathed great, but I wasn’t 100% pleased with the silicone Voit mouthpiece. This wasn’t Phil’s doing, but what I put on it. It’s just a little too soft for my liking, and I’ll either switch it out with a nice vintage one, or go with a black USD one. Oh yeah, the captain of the dive boat and one of the dive masters thought the reg was awesome!
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Post by SeaRat on Jul 11, 2023 16:18:19 GMT -8
Ty,
I've had the same problem with the black, silicone USD mouthpiece; they are making them too soft, so that in high current it tries to bend out of my mouth. So be careful about changing it out. The silicone rubber may not be the best for a mouthpiece.
John
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Post by vance on Jul 11, 2023 17:50:34 GMT -8
Hello here are two conversion from Phil. A titan convert to Trieste and the Dacor 2020, It makes a long times that I have not dive the Trieste but with the last adjustment , the Trieste breath very well, light in inhalation, and with a strong ventury. The Dacor give me all the air that I need but, during the dive I breathe fast and deeply to test the reaction of the regulator, and I have the sensation that it can not give all. The design of this old version must be the reason the lever go to IP ADJUSTING screw, the new design is better IMG_20230710_182739_086 by Patrick Michel, sur Flickr IMG_20230710_182952_710 by Patrick Michel, sur Flickr I don't think that the IP adjuster interference is the problem. The poppet doesn't need to be lifted very high to get max output. If there's a bottleneck, it'll be the cut-aways on the poppet, or the size of the volcano orifice.
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Post by spirou on Jul 12, 2023 6:34:33 GMT -8
Hello here are two conversion from Phil. A titan convert to Trieste and the Dacor 2020, It makes a long times that I have not dive the Trieste but with the last adjustment , the Trieste breath very well, light in inhalation, and with a strong ventury. The Dacor give me all the air that I need but, during the dive I breathe fast and deeply to test the reaction of the regulator, and I have the sensation that it can not give all. The design of this old version must be the reason the lever go to IP ADJUSTING screw, the new design is better IMG_20230710_182739_086 by Patrick Michel, sur Flickr IMG_20230710_182952_710 by Patrick Michel, sur Flickr I don't think that the IP adjuster interference is the problem. The poppet doesn't need to be lifted very high to get max output. If there's a bottleneck, it'll be the cut-aways on the poppet, or the size of the volcano orifice. As I say yesterday, in a previous post. after a dive with a Spiro royal mistral who are considered like one of the best double hose, and the feeling are sometimes misleading, I can not feel a difference , the 2020 is a great breather, very stable, a great réalisation, thanks a lot Phil Fred
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Post by Aquala1 on Jul 12, 2023 7:02:57 GMT -8
Ty, I've had the same problem with the black, silicone USD mouthpiece; they are making them too soft, so that in high current it tries to bend out of my mouth. So be careful about changing it out. The silicone rubber may not be the best for a mouthpiece. John John, I haven’t used any of the black silicone USD mouthpieces, but the green one and yellow ones I have are pretty good. The silicone seems thicker on those than the Voit one. If I go to a black mouthpiece, I’ll use an original one. I have several and they’re all in excellent condition.
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Post by vance on Jul 12, 2023 9:19:24 GMT -8
Fred, if the Dacor2020 isn't performing as well at depth, I need to know. Please don't worry about hurting my feelings! The next one I convert will get a larger diameter second stage nipple to accommodate an unmodified USD poppet, a larger volcano orifice, and a centered lever.
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Post by spirou on Jul 12, 2023 12:59:00 GMT -8
Fred, if the Dacor2020 isn't performing as well at depth, I need to know. Please don't worry about hurting my feelings! The next one I convert will get a larger diameter second stage nipple to accommodate an unmodified USD poppet, a larger volcano orifice, and a centered lever. No problem, I begin to test different adjustment of the IP, and also I plugged the compensation hole of the second stage, to see the effect, I obtain a massive free flow (IP 130 psi) , that will say, that you perform a second stage that can bleed sufficiently ( my opinion) . So this second stage is able to transmit what the first stage give. Next I have reducing step by step the IP around 112 psi, I don't change anything on the second stage this time. Like this ( without the loop)I feel, it would free flow but don't do it . I go to try the regulator this this weekend. Fred PS I own 4 R190. But they are all different, one of these, when mixed with MK2, he is really uncomfortable the ventury is to stong it blazed in my mouth.. But with mk5 first stage, the same second stage is domesticated.....
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Post by vance on Jul 12, 2023 14:00:04 GMT -8
Yes, I'm drilling the jets so that I achieve a close to, or controllable freeflow state OUT of the water.
IP is important in the equation. There has to be a balance! A bit of fussing with IP is essential.
Out of the water, I want the air flow to feel like it will go into freeflow if you pull too hard, but you can control it with backpressure from your mouth. In the water, it should feel normal, w/o the feeling you will have uncontrolled freeflow.
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Post by Aquala1 on Jul 12, 2023 15:17:56 GMT -8
Yes, I'm drilling the jets so that I achieve a close to, or controllable freeflow state OUT of the water. IP is important in the equation. There has to be a balance! A bit of fussing with IP is essential. Out of the water, I want the air flow to feel like it will go into freeflow if you pull too hard, but you can control it with backpressure from your mouth. In the water, it should feel normal, w/o the feeling you will have uncontrolled freeflow. Phil, is the Dacor 2020 that I’m testing set up this way?
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Post by vance on Jul 12, 2023 15:30:41 GMT -8
Honestly, I don't remember. The 2020 you have has an offset lever, which will provide a bit more travel, so the poppet opens more. Fred's has a setscrew reducer jet on one side which increases the venturi, but his lever is slightly obstructed by the IP adjuster.
I've been experimenting with jets a lot recently, so it's hard to remember what I did with yours. I really need to keep more precise records.
If you can, push the IP as high as 135.
Please let me know how it's going so I can consult with you.
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Post by spirou on Jul 12, 2023 20:27:45 GMT -8
Yes, I'm drilling the jets so that I achieve a close to, or controllable freeflow state OUT of the water. IP is important in the equation. There has to be a balance! A bit of fussing with IP is essential. Out of the water, I want the air flow to feel like it will go into freeflow if you pull too hard, but you can control it with backpressure from your mouth. In the water, it should feel normal, w/o the feeling you will have uncontrolled freeflow. It s also my opinion that IP is one of the key, to find this balance, I know now that can push until 135. I would like to know which pressure tank the yoke of the Olympic can support ? Fred
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Post by vance on Jul 13, 2023 7:00:04 GMT -8
It's at least a 3K psig yoke.
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Post by SeaRat on Jul 13, 2023 8:29:09 GMT -8
Yes, I'm drilling the jets so that I achieve a close to, or controllable freeflow state OUT of the water. IP is important in the equation. There has to be a balance! A bit of fussing with IP is essential. Out of the water, I want the air flow to feel like it will go into freeflow if you pull too hard, but you can control it with backpressure from your mouth. In the water, it should feel normal, w/o the feeling you will have uncontrolled freeflow. It s also my opinion that IP is one of the key, to find this balance, I know now that can push until 135. I would like to know which pressure tank the yoke of the Olympic can support ? Fred I have the Dive Dacor 1977 catalog, and it shows Dacor 3000 Aluminum Tanks along with the Nautilus CVS using AL tanks. It's the same for the 1976 catalog. So the Olympic regulators were made for 3000 psi tanks. John
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