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Post by spirou on Jul 13, 2023 9:35:45 GMT -8
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 Hello thank you for your answers Fred
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Post by Aquala1 on Jul 13, 2023 13:48:12 GMT -8
I wrapped up my first day of diving the Dacor 2020. On the first dive I took it down to 90 feet and it breathed well the entire dive. After an hour surface interval, and the reg sitting in the sun, I began the second dive. The breathing resistance was noticeably different with a warm and softened diaphragm. It breathed incredibly well, but the resistance increased as it cooled down. Over all it was a good performer and I’m taking it out again tomorrow. I might swap the diaphragm from the Black Fifty Fathoms and see if I can tell a difference. Regardless, it’ll still be another great day of diving with my kids
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Post by vance on Jul 13, 2023 14:01:01 GMT -8
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Post by Aquala1 on Jul 13, 2023 16:55:36 GMT -8
Phil, I just swapped the diaphragms, and it looks like the black diaphragm is rubber. We’ll see what tomorrow brings.
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Post by Aquala1 on Jul 14, 2023 12:26:30 GMT -8
Another good day with the Dacor 2020. On the first dive I took it down to 100 feet, but the majority of the dive was between 70 and 80 feet. The ease of breathing remained consistent at all depths, and that held the same on the slightly shallower, second dive. That dive maxed out at 60 feet with a dive time of one hour. The diaphragm swap made a little bit of difference, so I’ll keep the gray one in while I continue testing. By adding the swivel adapter that I bought from Antique Diver (Bill) I was able to route all of the hoses in the same way that I route my Black Fifty Fathoms and Aquala Zephyr (Argonaut Kraken in DA cans).
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Post by vance on Jul 14, 2023 14:10:31 GMT -8
Great news! The 2020 works good enough to be called good by Aquala!
Does yours have the J valve plug that is tapped for HP, and the double LP ports? I think so. I have one Dacor body that has only one LP port, but I know where it is. I'd love to see a photo of your hose routing.
It looks like you do, but if you don't have the tapped plug, let me know and I'll send you one. It makes routing the SPG much more convenient.
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Post by Aquala1 on Jul 14, 2023 15:32:24 GMT -8
Phil, I run my SPG off of the J-valve plug, the power inflator hose off of Bill’s splitter, and my long hose off of one of the original LP ports.
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Post by vance on Jul 14, 2023 15:51:07 GMT -8
Got it, cool! Looks perfect.
BTW, the yellow/blue looks awesome.
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Post by vance on Jul 14, 2023 17:12:30 GMT -8
Are there no EmmyLou fans out there?
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Post by SeaRat on Jul 14, 2023 17:27:48 GMT -8
Are there no EmmyLou fans out there? You bet...I'm listening right now. I had almost forgotten how great the steel guitar sounds! Thanks, John
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Post by vance on Jul 30, 2023 13:17:49 GMT -8
I started work on the new 2020 conversion with a centered second stage. I cut the retaining ring off the cover and slotted 2 sides on the mill for a tightening tool. That went well. After setting the first stage up in the jig for drilling the second stage hole and mounting it on the mill I ran into a problem right away. The 19/32" drill bit is too long. The mill head can't be raised high enough. I didn't have this problem on the other conversions b/c the second stage hole is 9/16", not 5/8" like this one will be. I could fit it in the drill press, but it's not rigid or accurate enough for my liking. So, Amazon got another tool order from me which includes a short 19/32" drill bit and end mill. The drill bit will probably be sufficient, but I might want to initiate the hole and possibly square the bottom of it with the end mill. The reasoning behind starting the hole with the end mill is to be sure I get the hole started exactly where I want it. Drill bits can wander and the drill chuck isn't as rigid as the collet chuck. I will post photos of the process once the bits arrive.
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Post by vance on Aug 3, 2023 16:10:49 GMT -8
I cut the hole for the 5/8 x 24 nipple. Thread resources say to use a 19/64" pilot hole. It turned out to be slightly too large for this, and produced a not the tightest set of threads. It is easily salvageable, as I can adjust the nipple for the oversize, but next time I'm going to drill a 9/16" hole.
Even with adjustment, I'm going to fix the second stage nipple/hard seat in place with JBWeld. It's probably over-kill, but it's akin to a machined second stage seat. The nipple/seat will never need to be replaced, so a permanent fixing solution is for the best.
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Post by vance on Aug 10, 2023 15:00:00 GMT -8
I drilled the IP supply holes today. I also made the 5/8"x 24tpi second stage nipple and a 3/8" diameter plug with the volcano orifice. This gets soldered into the nipple. This makes a complete screw-in second stage, as discussed on pg 7 of this thread.
When soldering the volcano plug, solder got on the orifice's seating surface by flowing down the orifice. While drilling through the orifice to clean it up, the dang plug pushed out. This was fortunate, since there isn't a glimmer of the solder that should have been sucked in between the nipple and plug to hold it in place against air pressure.
I need to be more careful with the flux, and figure out how to be certain the solder goes where it's supposed to and not where it isn't!
I'm thinking about cutting a groove around the plug's exterior diameter and wrapping some silver solder (it's very small gauge) around the groove to place it where I want it to go. With the application of flux and heat, it ought to melt and produce a good bond where I need it.
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Post by vance on Aug 11, 2023 14:12:09 GMT -8
In another thread concerning Kraken issues, I mentioned it would be great if new Doublehose regulators were available. Old Mossback designed and built a cool one that had a nice DSV type mouthpiece, but he couldn't secure funding to make it and then (I think) he got too old to pursue it.
So here's my thought: It seems there are a sh**-ton of Dacor 4/800s out there going for no money....
An enterprising person could collect a bunch of first stages then design a set of cans, a second stage, and set up a shop to pump out some cool regs. (NOT me!) They'd also need to make some rebuild parts for them, like the hoop shaped sintered filter in the first stage.
I wonder if one could even secure the Dacor name?
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Post by vance on Aug 11, 2023 14:17:01 GMT -8
Ty, Any more news on the dives with the 2020?
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