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Post by nikeajax on May 31, 2013 14:19:15 GMT -8
Anyone got a good method for removing limescale?!?!?!?!? I used white-vinegar for ten-minutes, zero-effect: it's inside the high-pressure-assembly... Hmmmmm, two-hours with PB-Blaster, an Allen-wrench and a hammer--DANG--that thing was REALLY stuck in there. Yeah, I know, that's a really brutal way to do it, but if I soaked it in vinegar any more, it would attack the plating Charlie, I may be hitting you up for one of those valve seats... Jaybird
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Post by SeaRat on May 31, 2013 18:12:52 GMT -8
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Post by nikeajax on Jun 1, 2013 8:53:32 GMT -8
I seem to be having really good results picking it out: think about the way they clean a person's teeth, they're way softer than chrome-plating! The lime is really brittle and if you attack it just right, it just flakes away without damaging the metal surface.
Jaybird
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Post by SeaRat on Jun 4, 2013 14:55:39 GMT -8
I dove my Hydro Twin today, and really put it through its paces. My knee has been pain free for two days, the swelling was gone, etc. so when I had the opportunity to splash in the Clackamas River at High Rocks, I took it. I talked to the lifeguards at about 11:40 AM, and told them I would be under my diver's flag float, and would be entering about noon and out about 1:00 PM (I had an appointment at 2:00 PM). In my float I placed my Aquamatic regulator so that I could use it later in the dive, in calmer water.
So I got my equipment on, got to the water and put my fins, mask, and helmet on then attached the line to my Para-Sea BC's cross-chest strap. I entered right at noon. The lifeguards told me the water was pretty cold, and it was. It turned out to be 45 degrees F (about 7 degrees C). I pulled the float to me (it had drifted behind me) so it would go into the current, and then pushed off and submerged. My mask was fogging, so I kept some water in it (a Dacor Tri-View mask) to swoosh around. I got to the bottom, and went hand-over-hand on the rocks to get into deep water. I needed to go under a ripping rapid above, on a current which ran 90 degrees to it downstream. I was in that current, and went under the rapids, when my float got caught in the other current. I gave a hard yank, and ended up without the float. I pulled the line in and had only the 3 pound weight, along with the wire loop that held my rope to the float. The current's resistance was such that the float and line parted, and I coiled the rope in my hand while I continued downstream to behind some very large rocks to get out of the current, and surfaced.
I swam upstream to a point where I could look for my float, and there it was upstream of me. It was caught in a circular eddy, going around and around upstream of the rapid that cut across the river. I watched it, and decided to try to get to it underwater. I submerged, thought I was going across the river, and went against the current. I did see my red-sided shiners with their red sides (mating colors), but this is the first time I've seen those colors at this cold a water temperature. Usually, they only get red when the water is above 60 degrees. But I had gotten turned around, and the bottom did not look right. I worked the Hydro Twin very, very hard on this part of the dive. After a while, I know I was still on the same side of the river, and going the wrong way, so I again surfaced.
One of the lifeguards was there, and a sheriff's patrol boat was also there. I asked whether the boat could go after my float, and the lifeguard said probably not, but that he would swim out to it. I waited almost 20 minutes, and he finally came downstream in the current (they are trained in river rescue) with my float in front of him. Of interest, this group of lifeguards are private, with a contract to provide guards on a notorious stretch of the river. They use wet suits, life vests and a mask with Churchill fins. I was very happy to see my Aquamatic sitting in the float when he brought it.
I re-attached my line, put on my mask and helmet, and headed downstream. I had re-attached the line, using the same link that came loose. I'll have to use something different, probably 550 pound parachute cord, next dive. I went downstream under the bridge, then surfaced and headed for shore. I doffed my scuba and weights, took off the Hydro Twin, and put the Aquamatic on my single 72 with a Healthways harness/backplate. The rest of the dive was uneventful, but I'll describe the Aquamatic on that thread.
I got out of the water with the help of a local fisherman (salmon are running). I got to my gear, doffed everything, put together my clothes to change to from my swim suit, and went down to check in with the lifeguards. I also showed him the 60+ year old regulator that he helped recover. Then I hustled to get back, change and get to a 2:00 PM meeting (I got there 10 minutes early).
The Hydro Twin preformed very well, but not quite where my Mossback Mk 3 is for performance.
John
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Post by scubadiverbob on Jun 12, 2013 22:04:06 GMT -8
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Post by scubadiverbob on Jun 12, 2013 23:32:10 GMT -8
Well, the one I have is balanced, and has the hole in the first stage John mentioned. It has one LP port and one HP port. Does that make it a Hydro Twin or a Hydro Twin II? Some came with two LP ports ....
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Post by scubadiverbob on Jun 12, 2013 23:53:35 GMT -8
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Post by scubadiverbob on Jun 12, 2013 23:55:29 GMT -8
The spg, with the non-vintage computer, is Andrew's ... hope no one minds ... sorry ...
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Post by SeaRat on Jun 13, 2013 22:25:00 GMT -8
Robert, it sounds like we both have a Hydro Twin II, although mine is not labeled that way.
John
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Post by nikeajax on Jun 14, 2013 7:33:53 GMT -8
Hey Robert, what the heck is that thing hangin' off the reg. Is that an over pressure valve; it looks like a pull-tab?
Jaybird
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