Creed
Pro Diver
Posts: 189
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Post by Creed on May 24, 2007 12:54:23 GMT -8
I hand machined a USD lp poppet to fit my new assembly. I need to trim the shaft, but it's partially functional.    I have to find a better way to produce those poppets. I either need to get a lathe or find a way to cast them. I'm leaning towards lost wax casting. |
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Post by luis on May 24, 2007 13:09:16 GMT -8
That looks pretty good.
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Post by duckbill on May 24, 2007 19:25:39 GMT -8
Looks great, Mike!
Did you do calculations to determine the hole sizes on the seat retainer, or was it by trial and error. I know it can be a touchy balance.
If you can get a lathe, do it. With a lathe and mill you can make just about anything.
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Creed
Pro Diver
Posts: 189
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Post by Creed on May 24, 2007 21:24:39 GMT -8
Looks great, Mike! Did you do calculations to determine the hole sizes on the seat retainer, or was it by trial and error. I know it can be a touchy balance. If you can get a lathe, do it. With a lathe and mill you can make just about anything. I duplicated the hole sizes of the Trieste, with the exception of eliminating one of the holes, to increase the venturi effect. This idea was taken from John Ratliff, who had altered his Trieste 2nd stage assembly in that way. I've actually started building a lathe, but that's a long term project. |
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Turtleguy9
Pro Diver
Padi MSDT, IDEA INST TRAINER, SDI OWSI, NASE
Posts: 136
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Post by Turtleguy9 on May 24, 2007 23:10:10 GMT -8
Aloha Creed
Thanks for keeping us informed about your project. Looks good so far.
Aloha
Roger
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Creed
Pro Diver
Posts: 189
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Post by Creed on May 26, 2007 23:24:58 GMT -8
Alas, now I know what Voit did with manufacturing defects. I was excited to get a regulator functional from my motley crew of parts, and I couldn't get the 2nd stage on the body to quit leaking. I look at the orifice, and it's deformed, badly. They had cranked down the 2nd stage so hard, it cut halfway through the lp seat. Unless one of my wilder ideas pans out, this body is sadly regulated to the life of a single hose. I'll post a picture whenever I get over this damned cold.
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Post by SeaRat on May 27, 2007 12:09:07 GMT -8
Creed,
Sorry to hear about the cold. Concerning the seat, is it possible to hand-polish out the deformation? I'm assuming that it's on the vertical plane, and if so, it seems that perhaps you could do something about it. I hope so, as you've put in a lot of time and effort.
John
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Creed
Pro Diver
Posts: 189
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Post by Creed on May 27, 2007 13:57:36 GMT -8
Creed, Sorry to hear about the cold. Concerning the seat, is it possible to hand-polish out the deformation? I'm assuming that it's on the vertical plane, and if so, it seems that perhaps you could do something about it. I hope so, as you've put in a lot of time and effort. John No, it can't be polished out. It's actually folded over slightly. I'm going to see if the local machine shop can't bore the orifice out to allow me to put in a Titan replaceable orifice. And I've got 4 more Titans to work on regardless. |
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Post by SeaRat on May 27, 2007 17:20:38 GMT -8
'Glad to hear you have backups. I'm interested in how your project goes. I've finally got my Trieste II completely back together, and ready to dive, after a full service (mine). Hopefully, tomorrow it will be in the water.
John
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Creed
Pro Diver
Posts: 189
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Post by Creed on Jul 11, 2007 20:45:02 GMT -8
Well, I got to do some surface breathing tests with my homebrew regulator. It breathes very nice up here. I should have a pool report and some photos to share within the next few days.
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Post by SeaRat on Jul 13, 2007 8:59:34 GMT -8
Creed,
We are (or at least I am) very interested in what's happening with your regulator, and the pool tests. Very few people actually build their own regulator, so this is a pretty unique vintage experience. Please do keep us informed.
John
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Creed
Pro Diver
Posts: 189
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Post by Creed on Jul 16, 2007 12:09:14 GMT -8
Well, here are some pictures of my initial prototype conversion, using a slightly modified DAAM case(you have to snip off one of the positioning tabs). Thanks go out to Bryan, Luis, Sam Miller and John Ratliff for supplying me with the parts to get this far.    And, yes, I know I haven't put the filter back on, and the clips aren't set on correctly.  But I was excited about showing off my new toy, a fraken-trieste! |
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Creed
Pro Diver
Posts: 189
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Post by Creed on Jul 17, 2007 8:49:53 GMT -8
Here are a few new pics. This is the regulator after my pool dive yesterday.    I spent about 45 minutes in the pool last night. I had the IP set at around 125psi. The regulator breathed well. I plan on replacing the diaphragm with a silicone one and upping the IP to 135-140 for the next test. Overall, I think that this reg is a very good breather, and will only get better as I tweak it. Hopefully, I'll make some more headway with the cases soon. |
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Post by SeaRat on Jul 17, 2007 19:33:01 GMT -8
Creed,
I'm excited for you, as it looks like you have a good double hose going. But do you have a better top box that you can put on it?
John
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Creed
Pro Diver
Posts: 189
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Post by Creed on Jul 17, 2007 20:36:51 GMT -8
Creed, I'm excited for you, as it looks like you have a good double hose going. But do you have a better top box that you can put on it? John No, John, that's the only spare cases I have. I'm working on casting some brass ones. |
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But I was excited about showing off my new toy, a fraken-trieste!