Mon Jun 26, 2017 12:34 pm
When you use the new US Divers HP seat, I think you need to change the push pin length! I don't remember what length I trimmed too, but will look in my notes and see if I can find that. Maybe meanwhile someone else will know the proper length and chime in here. ???
Be very careful cleaning the label. Gently hand cleaning with soap and water looks like it should be sufficient on that beautiful specimen!
The paint on that label is prone to come off very easily, so for sure don't put it in an ultrasonic cleaner.
The main shortcoming of that regulator is the shape of the diaphragm... not so much the material, but a new silicone one should help a little. Even that won't make a great breather out of most of these regs. You may also be able to back the second stage out a full turn or maybe even two to reduce the second stage spring tension and then adjust the lever height appropriately.
No matter what I did it just always came back the the arch-shaped diaphragm taking too much effort to get started down. The arch is self-supporting like a bridge archway is made for strength. The best fix i found was to build a diaphragm with different shape, but that is a lot of trouble (and maybe even dangerous). I also tampered with the second stage body's air outlets to get a good boost on the venturi action, but that is really touchy to get where it is not too overwhelming. Mine breaths like a champ even without the venturi alteration, but it took the diaphragm to get a low cracking effort. It will crack lower than is practical to dive with, and would benefit from the new VDH mouthpiece with the deflector to prevent air from wasting out the exhaust on inhalation!
Good find with that beauty!
The older I get the better I was.