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Starting down the DH rabbit hole

Discussion in 'Vintage Equipment Diving' started by James79, Nov 1, 2019.

  1. Frogkicker

    Frogkicker ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: I just don't log dives
    Location: Georgia
    27
    21
    3
    Congrats on get it up and going!!!

    If that is where the leak is, and extra wraps of Teflon helped. Replacing the Teflon tape with the Locktite that Luis H mentioned as thread sealant should work.
     
  2. James79

    James79 Regular of the Pub

    # of Dives: 25 - 49
    Location: Lower Alabama
    253
    190
    43
    Thanks!
    I'll probably just live with the slow leak for now.... But if I wait till January to get it in the water I'm sure I'll do something about it. Also, as I told someone else, pictures or it didn't happen!
    15746405448068505814365907899152.jpg 15746405841264162090150924888152.jpg 15746406175626641471490566125583.jpg
    Turns out the short yoke just barely fits on the Thermo convertible valve on my pony!
     
  3. Perryed

    Perryed Nassau Grouper

    # of Dives: 500 - 999
    Location: Missouri
    163
    96
    28
    Did you try the soapy water technique to see if that could pinpoint the leak? Or just put the hookah fitting back on to see if that stops it.
     
  4. James79

    James79 Regular of the Pub

    # of Dives: 25 - 49
    Location: Lower Alabama
    253
    190
    43
    Not yet... Honestly the assembly and little bit of testing has been in between working on 3 major projects that aren't scuba related (therefore far more important in the wife's eyes!). I'm either going to soapy water test or tub test when time permits.
     
  5. Perryed

    Perryed Nassau Grouper

    # of Dives: 500 - 999
    Location: Missouri
    163
    96
    28
    Gonna get a tank and do mine Monday or Tuesday. Will report back.
     
  6. Perryed

    Perryed Nassau Grouper

    # of Dives: 500 - 999
    Location: Missouri
    163
    96
    28
    PICT0006.JPG OK. Got everything hooked up and it had a very slow leak. Put it in the tub and it was coming from the splitter. About 1 BB sized bubble every second or so. Probably would be just fine. I have a tendency to be a bit anal at times so I undid the splitter from the regulator and applied a very thick layer of Teflon tape. Put it back on and snugged it down very tight. It`s been sitting under pressure for an hour with the air turned off and has dripped to 2200 psi from 2230 psi. I`m gonna call that good. No discernable bubbles and the IP at that pressure is 125. I`ll fine tune the IP at a lower pressure, but am very happy with these results. Hell, the 30 lb pressure drop may just be from sitting in cold water. When I work the second stage lever the IP drops to around 70 and then pops back up to around 100 and then climbs to about 120. Don`t know if that is normal or not but will be checking it out in the pool in the near future.
     
  7. James79

    James79 Regular of the Pub

    # of Dives: 25 - 49
    Location: Lower Alabama
    253
    190
    43
    Sounds like similar results on the splitter, i.e. lots of tape works out!
    Regarding the IP, I haven't messed with double hose till now, but first stage is the predecessor of the Conshelf... With a good seat and orifice I would expect a pretty crisp lockup. You description would lead me to check for a small nick in the orifice edge or a impression on the seat that doesn't line up (reads to me like IP is set at 100, but a small imperfection in the seat or orifice lets a little air past and 120 psi is enough to finish sealing it)
    As always, my advice is worth what you paid for it!
    Respectfully
    James
     
  8. Scuba Lawyer

    Scuba Lawyer Barracuda

    # of Dives: 5,000 - ∞
    Location: Laguna Beach, California
    426
    983
    93
    Once you cycle your 2nd stage a few hundred times the seat should lock up immediately at your desired IP without creep. Some folks cycle a lot less but I go to the other end of the spectrum. Good luck. :)
     
  9. Perryed

    Perryed Nassau Grouper

    # of Dives: 500 - 999
    Location: Missouri
    163
    96
    28
    I examined the seat with a magnifier and it was perfect. Like scubalawyer said, I think it just needs to cycle a bit to get a good lock up. We`ll see. Thanks guys!!
     
  10. James79

    James79 Regular of the Pub

    # of Dives: 25 - 49
    Location: Lower Alabama
    253
    190
    43
    In all fairness, I did warn you about the value of my advice!
     
    Perryed likes this.

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