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Scubapro Pilot

Discussion in 'Regulators' started by bnelson, Mar 12, 2004.

  1. tight rope walker

    tight rope walker Contributor

    279
    2
    Now, You can convert one to a sp pilot/air one, which has a high top retainer, and plastic internal parts. But I believe it is the all metal internal parts that contribute to the pilots performance. As well as it's ahead of it's time design. It basically looks the same except for the high cap.
     
  2. AfterDark

    AfterDark Solo Diver

    # of Dives: 1,000 - 2,499
    Location: Rhode Island, USA
    10,528
    7,429
    Is it true these can fail with a no air condition as opposed to free flowing?
     
  3. Thalassamania

    Thalassamania Diving Polymath ScubaBoard Supporter

    # of Dives: 5,000 - ∞
    Location: On a large pile of smokin' A'a, the most isolated
    22,171
    2,774
    There was a fatality associated with the servicing of a Pilot, you need to be very careful not to spray silicone on the diaphragm. If you do it may, on inhillation, slip out from under the clip that holds it in place. If that occurs the regulator will no longer deliver air, but will happily give you all the water that you could possibly want.
     
  4. tight rope walker

    tight rope walker Contributor

    279
    2
    Well, I believe any reg that has a diaphragm problem could potentially give you a no air situation, as I believe it is the activation of the diaphragm that allows a reg to operate.
    The problem is with the pilot, you are not only going to get no air on inhalation, but just to keep things exciting, you are probably going to get a mouth full of water. The pilot is unique, as the diaphragm also serves as the exhaust valve. If you were to look in the bottom of the pilot, you would see the whole thing.
    There is a small metal clip that holds the combo in place at the bottom of the diaphragm. If the diaphragm is not properly seated, or the clip becomes dislodged, once again allowing the diaphragm to become unseated or to move about, I believe you could get a mouth full of water on inhalation. Also as was previous stated, spraying the diaphragm with silicone might not be the best thing to do either.

    And I also believe if the pilot had a separate exhaust valve, at least the mouth full of water would not happen. If a problem arose with the diaphragm in a conventional reg, you simply would not get any air.

    Which unto itself might prove to be a nuisance to some.

    But I am in no way a tech, so these are just my theory's.

    Remember, it takes many swipes of an ax to drop a mighty tree.

    In the pilots case, this was just one.

    :):):)
     
  5. halocline

    halocline Solo Diver

    8,992
    3,383
    If a diaphragm leaks on a conventional 2nd stage, it will fill with water. In fact, you could argue that the lack of an exhaust valve presents one less point of entry for water.

    Not being too familiar with the pilot, I'm sort-of guessing here, but I suspect that the flooding problem would have been caused by doing something wrong in service. In a conventional 2nd stage, the diaphragm is securely held in place around the edge with a ring or clamp, whereas in the pilot, it had to be secured in such a way as to allow air to exit around the edges. This was undoubtedly a challenge to most reg techs.

    The pilot design eventually evolved into the D series regs, which use a conventional diaphragm but with a coaxial exhaust valve that's part of the same structure. This way you get the same advantages with case fault geometry, but you have a separate seating surface for the diaphragm and the exhaust valve.
     
  6. Nemrod

    Nemrod Solo Diver

    11,976
    2,152
    The ScubaPro Pilot was one of the few "pilot" valve or air servo actuated regulators on the market that also included the Spinnaker, the Tekna T2100 series, the Omega and Omega II.

    N
     

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