Hey Antique D,antique diver wrote:Sounds like your poppet pin may be too long for use with the new AquaLung poppet (HP seat). I cut mine to the length suggested by Greg Barlow: 0.630 inches. He also suggests measuring the overall length of the poppet with pin inserted should fall between 0.772 to 0.780" for proper operation. If it is longer, the first stage diaphragm may push the poppet open at normal pressures. If it is too short you may not get enough opening of the poppet during use.
If you have already cut your pin to the proper length, the leak may be around the little 006 oring in your first stage balance chamber (referred to as a poppet retainer in some Voit diagrams), or the larger oring around the first stage housing. 70 durometer is normal. If you changed the small oring it could have been damaged wrestling it into the balance chamber.
About the HPR second stage... I was under the impression that there was a slight thread mismatch between the Aqualung and Voit threads.
If so, that could let the second stage be misaligned so the lp seat does not seal properly. I could be mistaken, and would like to hear more about that conversion.
Hey Luis,luis wrote:I recommend you do a search for the Pegasus in this web site. You will find a lot of good information under that project name.
That was the original project were I designed a second stage to be used with the Voit Titan. Later on I modified that second stage into what eventually became the HPR. The Pegasus in some ways provided the original test prototypes for the HPR, but there are several difference.
The thread pitch for the Voit and US Divers are different. If you were able to thread an HPR into a Voit Titan, you have damaged the threads (probably on both mating parts).
Herman did most of the machining for this project and he may be able to fix the thread damage.
The US Divers (Conshelf type) first stage balancing chamber can be adapted for the Titan and other Voit regulators, but it does require some modifications. I wrote how to do it somewhere under one of the single hose discussions. I will try to find the thread later and post a link.
Hey Alan and Everyone,simonbeans wrote:To be sure everyone is on the same page, the history of converting the Titan II to a Trieste (Pegasus) has a few turns that you don't have correct. A man from the Mid-West made up a copy of the Trieste 2nd stage. From this, Luis redesigned the stage and had a few made by Herman to convert the Titan II to the Pegasus. Rob had the perfect cans for the conversion, and thus he had Herman cut some cans to fit the Titan II (Pegasus) body.
This was a much better regulator than the Trieste as the Pegasus could use the larger and better geometry main diaphragm. I did a few labels for the Pegasuses (Pegasi??) that were made.
You are under the assumption that VDH could afford to pay someone in actual money...Bronze06 wrote: If I lived in Florida, I would work for Bryan at minimum wage just to be around the new Mecca of Double Hose Regs. and to ogle all the stuff but my wife would get upset and demand that I stay in Texas.
Thanks Again Guys, Russ
The pressure thrust on this threads happen to be very small (because of the small area under pressure), so I am not concerned that you compromised the threads.Bronze06 wrote: That said and as an engineer your aren't going to like this, I was willing to sacrifice an HPR body to the Voit Scuba Gods and using a lot of silicon grease, gently BRUT FORCED the HPR body into the Titan body. The endstate came out on my side this time.
Sounds mysterious.A man from the Mid-West made up a copy of the Trieste 2nd stage.
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