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Post by vance on Oct 13, 2021 11:45:40 GMT -8
I will have a bunch. I'm trying to get transparent stickers designed right now. You are welcome to a few! If the transparent stickers cost too much, you'll get white.
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Post by nikeajax on Oct 13, 2021 12:51:31 GMT -8
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Post by vance on Oct 13, 2021 13:41:25 GMT -8
I mentioned it elsewhere, but can't remember where, that this is JB's graphic. He produced it from a photo of the original via some kid of graphic designer voodoo. Very mysterious! Thanks, JB! Warning!! Wildly off-topic for this thread: JB also produced some Scuba Deluxe sticker graphics that I want to get made. I think I'll have to take them to a decal print shop, rather than a website. I need them printed on silver foil and they have to be a specific size. WAY beyond my abilities to design on the websites I frequent. FYI, I have had mixed results with live help on those.
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Post by vance on Oct 29, 2021 16:20:56 GMT -8
I just received a bunch of newly plated brass parts from a friend who does that sort of thing. In that group are the two Trieste type second stage bodies, a couple of modified Conshelf poppets, a few other second stage bodies, and misc parts. First, here's some photos of my Trieste second stage body mounted in the Trieste box. The differences between my second stage and the original Trieste are in the jet pattern, the securing screw cuts (Voit cut big grooves for a headed screw, and mine are cut smaller for a setscrew), and slight machining variation. This photo shows the "repro" lever. It is hand made, so it does not look exactly like the oem lever. The next photo shows a simpler solution to the conversion. It is a Voit second stage body that they used to disable the second stage on the Titan II single hose regulators. I silversoldered a bit of brass to the flat top, and machined it to accept the lever feet. I modified a Titan II second stage lever by rebending the lever feet into the the double bend mentioned above in this thread. The problem with this mod is the jets. It will work, but cracking effort adjustment might be a challenge, since the jets don't point toward the intake horn optimally. Plugging the original jets and redrilling is probably the best solution.
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Post by vance on Oct 30, 2021 8:51:59 GMT -8
Here are some photos of the "simple" conversion. The original Voit body: The body with the cap soldered and partially machined: And the finished, plated body installed with the custom retainer and a view of the modded lever:
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Post by vance on Nov 4, 2021 15:50:59 GMT -8
I will have a bunch. I'm trying to get transparent stickers designed right now. You are welcome to a few! If the transparent stickers cost too much, you'll get white. Quoting myself again! I know it's wrong, but I can't seem to stop. I tried to order some stickers with a transparent background (probably chronicled elsewhere), but no dice. Anyone who wants a perfectly sized Trieste sticker with the white background, email or pm me. I'd be happy to send you some. I like them, b/c I'm making 3 Titan II/Triestes and these are perfect to indicate they are not true Triestes. And they look good!
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Post by vance on Nov 11, 2021 16:22:00 GMT -8
I sold the Titan II/Trieste repro conversion to a friend in Belguim who will do some dive testing.
He also got a free Titan II second stage to use as a safe second, partly because it is a match for the Trieste. But I also insisted that he dive the Trieste/Titan II with backup. I don't trust that the Trieste reproduction diaphragms seat correctly.
They are very difficult to seal (see posts here about that issue). The diaphragms are slightly too small in diameter. When trying to install, you have to get everything perfect and clamp it in place, or the diaphragm will slip off the flange.
My concern is that they could pull out in use and cause the regulator to flood. Not good unless you have a safe second.
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Post by antique diver on Nov 11, 2021 16:55:55 GMT -8
I sold the Titan II/Trieste repro conversion to a friend in Belguim who will do some dive testing. He also got a free Titan II second stage to use as a safe second, partly because it is a match for the Trieste. But I also insisted that he dive the Trieste/Titan II with backup. I don't trust that the Trieste reproduction diaphragms seat correctly. They are very difficult to seal (see posts here about that issue). The diaphragms are slightly too small in diameter. When trying to install, you have to get everything perfect and clamp it in place, or the diaphragm will slip off the flange. My concern is that they could pull out in use and cause the regulator to flood. Not good unless you have a safe second. Would said diver in Belgium be Tim? The answer to the diaphragm issue seems to be a whole new design... or a little known one from 2010.
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Post by vance on Nov 11, 2021 17:00:40 GMT -8
No, not Tim. Fred.
A new design for the Trieste diaphragm is needed. The current ones are problematic. If they were a bit bigger with a more positive bead, maybe they'd be good?
What is the 2010 design?
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Post by antique diver on Nov 11, 2021 20:10:51 GMT -8
No, not Tim. Fred. A new design for the Trieste diaphragm is needed. The current ones are problematic. If they were a bit bigger with a more positive bead, maybe they'd be good? What is the 2010 design? It's not pretty, but the shape doesn't resist being pulled against the lever like the arch shaped, geometrically self-supporting bridge structure of the original Voit. Besides being more flexible it is a little taller, leaving room to back out the second stage body as much as needed to reduce 2nd stage spring tension. Helps make a Trieste a pleasure to dive with.
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Post by james1979 on Nov 12, 2021 5:39:17 GMT -8
I'm in contact with Bill T about Trieste Diaphragms... I've been otherwise occupied these last few weeks, but hope to bust out the silicone and molds again in the next week or two. Pending some measurements, I'll be making a couple molds for 2 different styles of diaphragm for the Trieste.
best,
James
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Post by vance on Nov 12, 2021 9:12:44 GMT -8
Eben, as well as some others, have mentioned Bill's 2010 diaphragm in other threads. Eben says his works very well.
The photo above shows what looks to be a much better box flange interface than the repro's. The very thin ridge and too small diameter of the new repro is a big problem, and possibly unsafe.
I have a couple more Triestes that need a better diaphragm, so here's hoping!
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Post by antique diver on Nov 12, 2021 12:35:20 GMT -8
I'm in contact with Bill T about Trieste Diaphragms... I've been otherwise occupied these last few weeks, but hope to bust out the silicone and molds again in the next week or two. Pending some measurements, I'll be making a couple molds for 2 different styles of diaphragm for the Trieste. best, James I'm thankful to James for agreeing to work on an improved version of my 2010 home-brew. Mine works well but doesn't look very professional, and the sealing edges are a little weak to suit me due to the single component silicone I used. His CAD drawing from a blend of his ideas and mine looks great! I'm hoping he will give up a few other important projects, a few meals, time with family and all recreational pursuits to devote more time to the diaphragm. But I'm not rushing him.
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Post by vance on Nov 12, 2021 15:43:01 GMT -8
You get James on it, it's like loosing a pitbull. He won't let go until it's ha'nnin'.
He has contributed a sh**-ton of actual parts (not vaporware) that he has created on the 3D printer and from his diaphragm molds. I am stunned by his CAD drawing capability.
All I mean to say is, thanks James!
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Post by james1979 on Nov 13, 2021 4:21:35 GMT -8
Thanks for the votes of confidence, gents! However, save the gratitude until and unless I succeed, lol. I tend to get into these things in phases.... so no promises on timeliness, but I'll do my best.
Sorry Bill, family comes first! Of course, I spend enough time talking to you all here that your starting to feel like a second family... so there goes prioritizing! lol
Best,
James
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