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Post by snark3 on May 23, 2018 9:57:27 GMT -8
John,
I pulled that second stage gasket out of mine. I found that its almost exactly the same as the washer type O-ring USD used on some of their valves. I found the USD "washer" to be a little thicker, so putting one of these in may do what you're looking for. Just to try to clarify the washer I'm referring to, my USD triples and a USD "J" valve I have don't use a conventional O-ring, they have what almost looks like the washer in your garden hose, where the reg contacts the valve.
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Post by vance on May 23, 2018 9:57:59 GMT -8
Phil, check the condition of the plunger: I think you're experiencing IP-creep. My Calypso-IV and Conshelf-XIV and Olympic-400 were all doing that too. That splutter-burp sound exactly like my my regs were doing... JB I'll check that. I have some new plungers, and I'll swap it out. |
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Post by vance on May 23, 2018 16:39:22 GMT -8
John, pls answer this question: did you get your balanced HydroTwin new?
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Post by SeaRat on May 23, 2018 18:14:31 GMT -8
Vance,
No, I bought it off a guy who had quit diving in the 1980s. We were over to his house in Sutherland, Oregon (not far from our home at the time in Roseburg). He asked if I wanted to buy it, and I got it for $25. And, I really like it as a double hose regulator. The Hydro-Twin II was way ahead of its time.
John
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Post by nikeajax on May 24, 2018 12:16:30 GMT -8
No, I bought it off a guy who had quit diving in the 1980s..I got it for $25. And, I really like it as a double hose regulator. The Hydro-Twin II was way ahead of its time. John  Now that's an understatement if ever I heard one... |
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Post by vance on May 24, 2018 19:06:38 GMT -8
Vance, No, I bought it off a guy who had quit diving in the 1980s. We were over to his house in Sutherland, Oregon (not far from our home at the time in Roseburg). He asked if I wanted to buy it, and I got it for $25. And, I really like it as a double hose regulator. The Hydro-Twin II was way ahead of its time. John Sorry for the rudish sounding question! I had asked before, but it got lost in the discussion. Many things get modded/changed/repaired along the way, and I suggest that the balanced HT might be one of these situations? I think it would be possible to make the unbalanced models balanced by switching a few parts around. |
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Post by snark3 on May 26, 2018 12:19:38 GMT -8
I took Phil's suggestion and removed the volcano orifice. It wouldn't budge with 1 dowel but one in each of the four holes and a hammer tapping on them it came out. Now on to cleaning as its pretty grungy inside. I've heard Salt-x is a good cleaner. Anybody got any ideas pro or con on Salt-x, or maybe something else to dip this in to clean it.
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Post by crabbyjim on May 26, 2018 13:05:21 GMT -8
Vinegar and water, 25 per cent vinegar. Vinegar cleans everything.
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Post by snark3 on May 26, 2018 17:22:59 GMT -8
Thanks crabbyjim. I've got some distilled white vinegar in the cabinet.
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Post by waldenwalrus on May 30, 2018 11:20:46 GMT -8
This thing called work gets in the way of playing with all my vintage regs. www.flickr.com/photos/40156377@N07/albums/72157695717517171here are some pictures of this. Its good to know that it is as reliable as a Ford Truck. I didn't notice it at first but it must have taken a pretty good fall as the back plate of the reg is bent in a little. I snapped the band that holds it together and that may or may not be a problem. it all may be moot if the diaphragm doesn't get pliable again. I imagine I could hold it together with Aqua-lung Clips, I have plenty of them. The Vintage DH band maw work with a longer screw, and somebody suggested silver soldering the band back together (initial attempts have not been successful. Any suggestions how to flatten the dent in the can? I was kidding about the Ford, that's a Dodge Power Wagon is it not there is no diaphragm stop like pictured above |
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Post by nikeajax on May 30, 2018 11:57:28 GMT -8
John, nope, same company that built the first "pony car", and that wasn't Ford neethur!  I would use a piece of masonite on a flat surface and dolly it out with a small hammer: the masonite will keep the hammer from making a crater in the metal--does this make sense to you? You're not hitting it very hard, just gentle tapping... Take the ring to a professional and have it silver soldered! JB |
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Post by SeaRat on May 30, 2018 16:43:01 GMT -8
Well, I tried using an older O-ring that fit into the second stage hole to space the second stage housing higher, but it didn't work. I had an air leak, popping, etc. So it's back assembled, but still has the higher interstage pressure.
John
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Post by nikeajax on May 30, 2018 16:59:24 GMT -8
Hey John, let's wind the tape back a bit... This is sounding a bit familiar! Check your diaphragm remember like on your Scubair?
JB
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Post by SeaRat on May 30, 2018 22:03:46 GMT -8
JB, I remember that, but I don't think this HP diaphragm is the problem. With my Scubair, the diaphragm had become thinned so as to keep me from getting a low enough IP. But in this case, I can get any IP I want, but the regulator doesn't perform well until I'm at somewhere around 160 psig. My thought is that I do need to look at the first stage, lub it, and check the sintered filter too. I'll do a diaphragm check at the same time, but doubt I'll find anything. But, I've been wrong before, so thanks for the heads-up. Here are some photos of the second stage of the Hydro-Twin.  This is what it looks like when assembled inside the case.  Here is the IP orifice.  This is the seat assembly/orifice, removed from the regulator.  This almost shows the actual seat. I found that I could reverse the seat, and did so. John |
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Post by waldenwalrus on May 31, 2018 2:20:46 GMT -8
I believe I have several NOS HP diaphragms for sportsways if you need one.
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