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  1. #1
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    replacement for Dart second stage diaphragm

    Has anyone ever had to find a substitute diaphragm for a Dacor Dart second stage. I am rebuilding one that has near perfect chrome and rubber, with the exception of this fragile part. I think it was a design flaw that put too big of a stainless plate in the rubber, and they failed at the transition point. I am wondering what I can use as a substitute. I have tried the neoprene one from an olympic model, but it needs about 1/8 inch more rubber al the way around since the dart diaphragm was pierced for screws. I need something that is 3 1/8 inches in diameter. Any help is always appreciated Scott

  2. #2
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    herman's Avatar
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    PM sent.
    herman

    www.ncdivers.com
    Oly C-5050, PT-015, Inon D180

  3. #3
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    Herman, don't keep this info a secret. I have a Dart that is the first reg I ever breathed from that needs an overhaul. I think mine may need a second stage seat but I have not gotten into it yet. Do you know if any parts are available ?
    I am not sure if I can resurface anything yet but I plan on working on it this winter.

  4. #4
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    herman's Avatar
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    Not a secret really. I am just playing around with the idea of reproducing some diaphrams for some of the old single hose regs. At this time I don't have anything but will need an old diaphram for a model so I wanted the old one if Scott finds a replacement and intends to trash the old one.
    herman

    www.ncdivers.com
    Oly C-5050, PT-015, Inon D180

  5. #5
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    Scuba Cowboy's Avatar
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    Herman, I have several old single hose diaphragms and would be happy to share. PM me if you'd like them.
    Dale Swift
    PADI, SDI, TDI Instructor
    www.scubacowboys.com

  6. #6
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    herman's Avatar
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    Will do.
    herman

    www.ncdivers.com
    Oly C-5050, PT-015, Inon D180

  7. #7
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    simonbeans's Avatar
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    These diaphrams are the right diameter. PM if you are interested in one for your project.

    Avatar Photo by David Haas

  8. #8
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    Hallmac's Avatar
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    have a look at the USD Conshelf XII - XXIV.

    You also might have a look at page 27 of the 2009 Trident catalog.
    "Any intelligent fool can make things bigger and more complex ... it takes a touch of genius -- and a lot of courage -- to move in the opposite direction."
    Albert Einstein

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