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Post by crabbyjim on Nov 28, 2016 14:10:12 GMT -8
John,
I tried the DVS mouthpiece this morning and had a small but noticable improvement in breathing. This was a bench test with no instruments but promising.
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Post by luis on Nov 28, 2016 17:34:18 GMT -8
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Post by crabbyjim on Apr 4, 2017 12:23:54 GMT -8
John, Thanks for the pictures. When I learned to dive in 1969, we used USD Mae Wests with ties, not zippers. That came later. My first regulator was a Calypso J, with an hp port on the bottom and no low pressure port. The USD horsecollar i used mid 70's to 1990 had the oral inflator on the left (port) side and the Schrader valve power inflator on the right (starboard) side. So, if the Trieste design predates power inflators, what was the purpose of the lp port? Does anyone know the answer?
Crabby Jim Crabby Jim, This was in a transition phase, and we (I was writing about this for "NAUI News") had started using octopus regulators. So I think that was the purpose for the LP outlet. As I said above, I was using an adapter from the beginning with this regulator. Yo u have to remember that the only other two hose regulator with both LP and HP ports was the then discontinued Sportsways Hydro Twin. (The Nemrod Snark III also had a LP Oort, but it was taken by the overpressure relief valve, though with an adapter you could get multiple LP ports onto it. They called the Snark III a three stage regulator, but the third stage was the overpressure relief valve.). But BCDs were in their infancy at that time. My BCD was the full back of my wet suit, which was a sandwich of 1/8 inch neoprene with an inflator hose, buil by Bill Herder of Deep Sea Bill's in Newport, Oregon. Cave divers and wreck divers were demanding octopus second stages, and Voit put that into the Trieste regulator (and the Titan, which had the same first stage). John
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Post by crabbyjim on Apr 4, 2017 12:33:28 GMT -8
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Post by nikeajax on Apr 4, 2017 13:07:51 GMT -8
Jim, I've asked this question time and again; I never got a real answer! My Navy Unit-II from 1966, has all the ports I need to run everything: 1-HP, 3-LP: JB
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Post by crabbyjim on Apr 4, 2017 13:48:43 GMT -8
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Post by nikeajax on Apr 4, 2017 15:06:59 GMT -8
Hmmmmm? All I found was a bunch of, well, doo-doo, just bouncing back and forth... I have yet to see any regulator as old as the Sportsways Navy Unit with as many ports as it has. The Hyro Twins and the Navy Unit had basically the same valve-body (just so I don't sound like I'm being semantic/pedantic). JB
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Post by nikeajax on Apr 4, 2017 16:16:15 GMT -8
Okay, according to Basic Scuba, this body style came out in 1961. So, if the Navy Unit was actually intended by them to be used by the USN for training purposes, then perhaps Water Lung Sportsways was the first to actually think of the octo? Just thinking out loud: I can't think of any other reasons to have all those ports, even with pneumatic tools attached to it...
JB
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Post by crabbyjim on Dec 24, 2017 9:04:08 GMT -8
Returning to the Trieste, I removed the j valve from the regulator which is in the FX cans and inserted a plug. Is that port now a potential low pressure port? Is there a fitting that will allow me to install an inflator hose for a bc? My FX Trieste is the best breathing double hose regulator that I have so if I can use that port for the bc I can use the starboard lp port for an octopus.
Merry Xmas everyone!
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Post by SeaRat on Dec 24, 2017 9:56:49 GMT -8
Crabby, I think this plug with the port would be a HP port (high pressure). This is because it covers the area that the J-valve would normally be, and therefore you cannot use it with a LP octopus regulator. Rather, you need a special splitter, which allows you to route one LP line under the regulator body. This is a better way to do it. I'll see whether I can get a photo of it for you. This is what mine looks like, mounted on my PJ jump tanks. My Trieste II now has Luis' DSV mounted on it, rather than my own adaptation of a USD curved mouthpiece with a Healthways baffle plate glued into it (depicted in this photo). John
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Post by crabbyjim on Dec 24, 2017 14:27:34 GMT -8
Thanks John. I think I have seen the pictures that you previously posted showing a u turn in the hose after it came off the splitter. I can still use the Trieste with my dry suit, running the hose from regulator to suit under my right arm and manually inflating the bc if necessary.
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Post by nikeajax on Dec 24, 2017 14:32:36 GMT -8
Jim, I answered your e-mail Yes, John is totally right-use a splitter/tee. I sent you a link to a eBait page full of them... JB
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Post by SeaRat on Dec 24, 2017 15:41:34 GMT -8
Jim, I answered your e-mail Yes, John is totally right-use a splitter/tee. I sent you a link to a eBait page full of them... JB Jaybird, except for the one hose coming off the regulator, under the body and to the left for my inflator. There is one extended body splitter which allows this. John
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