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Scubapro naming convention?

Discussion in 'Regulators' started by BassO, Oct 8, 2020.

  1. rsingler

    rsingler Scuba Instructor, Tinkerer in Brass Staff Member ScubaBoard Sponsor

    # of Dives: 500 - 999
    Location: Napa, California
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    Tell us how you really feel, Burhan! :rofl3:
    I still like my SR-2. But yeah. I mostly dive Atomic and Poseidon. And D's.

    I might turn into a fanboi for the Mk19...
     
    BurhanMuntasser likes this.
  2. BurhanMuntasser

    BurhanMuntasser Dive Charter

    # of Dives: I'm a Fish!
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    I got to get over my shyness and learn to express my opinions in the open I know.
     
    rsingler likes this.
  3. Angelo Farina

    Angelo Farina Marine Scientist

    # of Dives: 1,000 - 2,499
    Location: Parma, ITALY
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    Why do you think that converting a plain 109 to a BA increases complexity?
    The number of parts remains the same. The BA poppet originally was in two parts, then in three parts, but the latest S-wing poppet is one piece...
    And the balance chamber is placed where in the original one there was a low-friction plastic distancer.
    The modification does not just make the reg slightly smoother, it also increases fault tolerance (as some IP fluctuations from 1st stage are compensated for) and the seat is lasting longer thanks to the smaller static load, due to the lighter spring.
    So modifying the 109 makes it more fault tolerant and reliable, keeping the number of parts unchanged.
    For years I did employ the BA mod on my primary, while leaving the secondary unmodified.
    In the years I did see those secondaries having more problems and often having small hissing, while the BA-modified primary was always flawless.
    As soon ad the single piece S-wing poppet was made available, I did modify also all my secondary ones, and since then I had no more hissing, even if jumping over the standard service intervals...
     
  4. halocline

    halocline Solo Diver

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    I've converted most of my 109s to balanced. I find they hold a tune longer because there's less wear on the seat in storage, so to me that makes them more reliable over the long run.
     
    Angelo Farina likes this.
  5. lexvil

    lexvil ScubaBoard Sponsor ScubaBoard Sponsor

    # of Dives: 1,000 - 2,499
    Location: jamestown, ca.
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    Doesn’t your S wing have two o rings and a rivet seat? Doesn’t that make it 4 parts?
     
  6. Open Ocean Diver

    Open Ocean Diver ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 50 - 99
    Location: Toronto, Lauderdale-by-the-Sea
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    Interesting airplanes back in the day had less parts and weren't as safe as planes today. Planes today with their sophistication many more parts redundancy have never been safer.
     
    lexvil likes this.
  7. Angelo Farina

    Angelo Farina Marine Scientist

    # of Dives: 1,000 - 2,499
    Location: Parma, ITALY
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    No rivet (that was the older model) and just one O-ring. The seat is simply inserted in the plastic body. Same as with the duro poppet for the unbalanced version...
     
  8. lexvil

    lexvil ScubaBoard Sponsor ScubaBoard Sponsor

    # of Dives: 1,000 - 2,499
    Location: jamestown, ca.
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    So true, more parts doesn’t necessarily mean no gain from complexity, I’ll take (and have) a modern “plastic” second stage every time, it’s just easier to get better performance from them. That said a 109 is a great reg even in the original configuration and when upgraded to balanced it is better than plenty of “other” brands. For the first stage MK 17.
     
    Open Ocean Diver likes this.
  9. lexvil

    lexvil ScubaBoard Sponsor ScubaBoard Sponsor

    # of Dives: 1,000 - 2,499
    Location: jamestown, ca.
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    The seat is a rivet style, you may want to look at the S wing poppet again because they have two balance chamber o rings (don’t really know why they went to two since Zeagle and Atomic get along fine with one) the balanced is more complex but better.
     
  10. axxel57

    axxel57 Solo Diver

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    The S-Wing poppet with the two o-rings came on the market in 1999. It was supposed to reduce the friction in the balance chamber by deepen one of the grooves. The second o-ring should trap the silicone between the o-rings, preventing the o-rings to dry out with use........
     
    lexvil likes this.

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