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Post by herman on May 2, 2021 11:35:07 GMT -8
No, the Conshelf looks almost like the one on the left but it is longer and the stem is slightly bigger, then tapered down for the standard 5-40 threads. That looks like a DA/RAM seat.
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Post by vance on May 2, 2021 11:45:42 GMT -8
The one on the left is a DA seat. The one on the right is the mystery. Now I'm wondering if it's a Dacor single hoser seat.
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Post by herman on May 2, 2021 15:25:54 GMT -8
My mistake, I misread you post, yea the left one is a DA. I have seen the one on the right but not sure where. Looking at my Dacor manuals, it might be a Pacer Aero seat holder.
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Post by nikeajax on May 2, 2021 16:52:07 GMT -8
Yes, I b'lieve you are both c'rect: that deep seat looks Dacor to me, but is waaaaaay too short for an Olympic, and I don't remember what the Dart's looked like, but remember it was somethin' funky!
JB
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Post by james1979 on May 2, 2021 17:16:24 GMT -8
Phil, tomorrow I'll get a picture posted of the Conshelf poppet. It's a little different (may need a couple nubs machined off). After church today my youngest (11) and I spent the day diving... I'm a little bushed now!
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Post by james1979 on May 3, 2021 4:08:45 GMT -8
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Post by vance on May 3, 2021 7:52:50 GMT -8
I think we're covered on the poppet, but I will need the old lever and second stage volcano, Stephan.
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Post by vance on May 3, 2021 15:10:24 GMT -8
From Martinez, CA (home of the Martini)? I like me a local whatever, so let me know when you're in town (I think you said San Leandro?)
Let me know when you are here in the SF Bay Area, and maybe I can organize a meetup with some of us local members!
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Post by vance on May 3, 2021 16:14:17 GMT -8
John Muir's house is a beautiful Victorian in Martinez. I've seen it many times.
The story about the Martini is, the barkeep was out of whiskey and he couldn't serve a gold miner, so he offered an alternative. He said, "I'll make you a drink that is just as good."
10x, baby! Not sure of the authenticity of the story, but I like it!
No problem, Stephan, just mail me the parts.
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Post by vance on May 11, 2021 11:56:49 GMT -8
Here's Stephan's lever, straight out of his R-3. Note the bends. This is done to gain lever height. I have seen these bends in several 2500 regulators, so I'm wondering if this was common practice by technicians. I have also seen levers with slight bends at the end (where it contacts the second lever), and straight levers. One problem I have noticed is that the levers often don't contact each other at the little bump at the small end of the seat lever, but engage on the sharp edge. This causes a stutter kind of action which makes little trenches in the upper lever. Notice the bend at the very end of the lever in the top photo. This makes the bump contact the underside of the top lever, as it is supposed to.
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Post by vance on May 11, 2021 12:47:29 GMT -8
I've been working on making the pivots for Dacor DH levers. The R-3 type LP seat lever has a shaft with hairpin clips at both ends. I'm threading 1/16" stainless rod and using #0-80 nuts on both ends. One problem with using nuts as retainers is fixing them to the pivot in a way that secures them but also allows them to be removed when necessary. The R-3 type levers need to be removed to set IP..... I was under the impression that the interstage pressure (IP) for the R-3 and lower regulators was not something that could be adjusted or "set." There is no provision for adjusting the IP, other than maybe using washers. I tried that, and it did not work well. John As I admitted somewhere after this post, the IP can be checked, but there is no provision to set the IP on the 2500s. I hooked Stephan's R-3 up with my adapter and IP gauge today, and at 1000 psig tank pressure, the IP was 160. Mine are also high. This might be normal for the 2500s. It does make it difficult to seal that 2nd stage, though. Cracking effort is going to be sky-high with the spring tension you need to get a no leak 2nd stage. Maybe my adjustable IP mod for the 2500 has legs after all. I think breathing these would be a lot easier if the IP could be dropped to 130-ish?
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Post by SeaRat on May 11, 2021 13:53:18 GMT -8
I was under the impression that the interstage pressure (IP) for the R-3 and lower regulators was not something that could be adjusted or "set." There is no provision for adjusting the IP, other than maybe using washers. I tried that, and it did not work well. John As I admitted somewhere after this post, the IP can be checked, but there is no provision to set the IP on the 2500s. I hooked Stephan's R-3 up with my adapter and IP gauge today, and at 1000 psig tank pressure, the IP was 160. Mine are also high. This might be normal for the 2500s. It does make it difficult to seal that 2nd stage, though. Cracking effort is going to be sky-high with the spring tension you need to get a no leak 2nd stage. Maybe my adjustable IP mod for the 2500 has legs after all. I think breathing these would be a lot easier if the IP could be dropped to 130-ish? If the IP is 160 at 1000 psi tank pressure, it will be over 180 at 500 psi on this unbalanced diaphragm regulator. John
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Post by vance on May 11, 2021 14:00:44 GMT -8
Yep. Not good.
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Post by vance on May 11, 2021 15:46:39 GMT -8
Nice photo. We'll get these regs up and running. I will post photos of the next steps.
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Post by nikeajax on May 11, 2021 16:26:42 GMT -8
I agree about the image Also diggin' on the white dust-cap So, judging by your verbiage, you must be in "The Golden State" by now--welcome my friend Here's our State Song: JB
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