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Pony regulator question

Discussion in 'Regulators' started by MrVegas, May 14, 2020.

  1. MrVegas

    MrVegas Nassau Grouper

    # of Dives: 100 - 199
    Location: Ohio
    I may be getting a pony tank at some point in the not too distant future. I dive in somewhat cold water (down to low 40s), but not typically in cold weather. I was thinking I would probably just get another of the same relatively inexpensive sealed diaphragm regulators that has worked well for me so far and use that for the pony. (If it ain't broke . . . )

    On the other hand, I read sometimes that people often use a simple unbalanced piston for pony tanks. Any reason (other than saving a few bucks) to prefer a basic unbalanced piston on a pony tank?
  2. runsongas

    runsongas Great White

    # of Dives: 500 - 999
    Location: California - Bay Area
    unbalanced piston is simpler and easier to clean for oxygen service. but outside of a dedicated deco reg, a balanced diaphragm would be a better pick, especially as a cold water backup.
  3. Bert van den Berg

    Bert van den Berg Solo Diver

    # of Dives: 2,500 - 4,999
    Location: New Zealand
    I buy a new regulator for my everyday diving and use the old "everyday diving" regulator on my pony. I try to "test" the pony regulator once in a while to make sure it still works OK.

    For some reason it is less expensive in New Zealand to buy a new regulator than to get the old regulator serviced. For this reason the wife and I end up with new regulators every couple of years.
  4. happy-diver

    happy-diver Skindiver Just feelin it

    # of Dives: 2,500 - 4,999
    Location: same ocean as you
  5. Angelo Farina

    Angelo Farina Marine Scientist

    # of Dives: 1,000 - 2,499
    Location: Parma, ITALY
    Isn't simpler, cheaper and safer to service them yourself?
    Boston Breakwater and Dark Wolf like this.
  6. JimBlay

    JimBlay Divin' Papaw ScubaBoard Supporter

    # of Dives: 500 - 999
    Location: South Florida
    A deco reg is often simple and unbalanced because it's being used shallow. A pony reg is an entirely different thing. I personally want my pony reg to be as high quality as my primary. If I ever need to use it I will most likely need to switch to it at depth and in a high stress situation meaning my breathing will be much heavier than normal. I don't want to have to breath through an inferior reg in situations like that.

    I use a top of the line reg on my pony (Apeks ATX200) that is as high quality as my primary (Aqua Lung Legend).
  7. Edward3c

    Edward3c Instructor, Scuba

    You pony reg should be as good, if not better, than your primary. When you need it you are likely to be stressed and could still be at depth.

    I practice switching over to my pony and make an ascent from greater than 30m on a regular basis.
  8. lexvil

    lexvil ScubaBoard Sponsor ScubaBoard Sponsor

    # of Dives: 1,000 - 2,499
    Location: jamestown, ca.
    I use MK 11 or MK 17
  9. rhwestfall

    rhwestfall Woof! ScubaBoard Sponsor

    # of Dives: 200 - 499
    Location: "La Grande Ile"
    My pony is a ScubaPro MK-2 paired with a high performance balanced second (156/g250). The MK-2 is really cold tolerant. Compact, inexpensive, easy to maintain, and very reliable.

    The newest model: EVO, with the coated piston spring would be a great choice IMHO.
    rjack321, asher102 and lexvil like this.
  10. MrVegas

    MrVegas Nassau Grouper

    # of Dives: 100 - 199
    Location: Ohio
    Thanks for all of the responses. Helpful information. I have been fairly obsessed with reading cold water regulator information these days. Not so worried with what I'm doing now, but 30 feet deeper and five degrees colder and the thought process changes a little.

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