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Thread: Airtools Underwater

  1. #1
    Senior Member Kc1Scuba's Avatar
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    Default Airtools Underwater

    Does anyone have any experience using any form of air tools underwater?

    I am thinking about undertaking a project, and any tips or tricks would be very useful.

    Thank you for your time,
    Kyle
    Pink Please!!!

  2. #2
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    I have used them before when I was still doing research diving.

    What specific tools are you using or questions do you have?

  3. #3
    Diving Technologist JS1scuba's Avatar
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    Kyle, check this out http://www.underwatertools.net/

    these are hydraulic tools that you might like to look at
    Joel Silverstein, VP COO
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  4. #4


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    We've used pneumatic hammer drills to bore holes in rocks @ Catalina for research diving transect spikes. The drill is heavy and runs off scuba cylinders. Back up divers can help hold the driller/diver in place as he puts pressure on the tool. Eats a lot of gas too, but we never ran one on 32%.

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    If you choose to run pneumatics from scuba cylinders there is a much greater tendency to fully empty the bottle. VIP frequently.

    Tobin
    Innovative dive gear

    https://www.deepseasupply.com/

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    In fresh water you can use most any dryland air tools without any issues, just oil well and clean afterwards. In salt they still work, just not as long. My favorite is the air chisel, but it uses lots of air. If you're not working too deep, a regular air hose and a few sets of doubles linked together will give a pretty long run.
    John Sampson
    Phoenix, AZ

  7. #7
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    Quote Originally Posted by TobinGeorge View Post
    If you choose to run pneumatics from scuba cylinders there is a much greater tendency to fully empty the bottle. VIP frequently.

    Tobin
    Excellent post. This could not be more true.

  8. #8
    Diving Technologist JS1scuba's Avatar
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    Quote Originally Posted by TobinGeorge View Post
    If you choose to run pneumatics from scuba cylinders there is a much greater tendency to fully empty the bottle. VIP frequently.

    Tobin
    This really wont be much of a problem. If he drains them out they will probably be my tanks anyway. We can do those vips without much issue. Though I do belive Kyle has the ability to read an SPG. But keep in mind that once the cylinder pressure reaches 120 psi there will be no flow to drive the tool and it will stop.



    Ho Ho Ho

    JDS
    Joel Silverstein, VP COO
    Tech Diving Limited
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    Need to reach me ? Cell / Text 928-230-3680

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    Quote Originally Posted by JS1scuba View Post
    This really wont be much of a problem. If he drains them out they will probably be my tanks anyway. We can do those vips without much issue. Though I do belive Kyle has the ability to read an SPG. But keep in mind that once the cylinder pressure reaches 120 psi there will be no flow to drive the tool and it will stop.
    Maybe. At reduced pressures airtools will still flow gas, they may not "hit" or rotate but most will flow gas, right down to zero.

    The terminal tank pressure is a function of the min inlet pressure the first stage needs, this can be pretty low depending on the reg.

    Never hurts to take a peek inside.

    Tobin
    Innovative dive gear

    https://www.deepseasupply.com/

  10. #10
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    Quote Originally Posted by TobinGeorge View Post
    Maybe. At reduced pressures airtools will still flow gas, they may not "hit" or rotate but most will flow gas, right down to zero.

    The terminal tank pressure is a function of the min inlet pressure the first stage needs, this can be pretty low depending on the reg.

    Never hurts to take a peek inside.

    Tobin
    Actually I think Joel has the right idea on this, just use his or someone elses tanks, then it doesn't matter.
    John Sampson
    Phoenix, AZ

  11. #11
    Diving Technologist JS1scuba's Avatar
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    Quote Originally Posted by TobinGeorge View Post
    Maybe. At reduced pressures airtools will still flow gas, they may not "hit" or rotate but most will flow gas, right down to zero.

    The terminal tank pressure is a function of the min inlet pressure the first stage needs, this can be pretty low depending on the reg.

    Never hurts to take a peek inside.

    Tobin
    That's the really nice part about having our own hydro facility -- we can take a peek whenever we like and not worry about that kind of stuff.

    The regulator should stall the flow at about 120 psi but we will see what happens.

    I think Kyle is working on cutting holes in the bottoms of some boats in the marina to see how they sink.

  12. #12
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    I should also add that swapping the reg from tank to tank underwater does nothing to reduce the likelihood of water intrusion.

    Good luck,

    Tobin
    Innovative dive gear

    https://www.deepseasupply.com/

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    Quote Originally Posted by JS1scuba View Post
    I think Kyle is working on cutting holes in the bottoms of some boats in the marina to see how they sink.
    Cutting holes = slow and boring, blowing holes = fun and excitment.
    John Sampson
    Phoenix, AZ

  14. #14
    Senior Member Thalassamania's Avatar
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    We often dove independent doubles to run air drills. Be sure to use an in-line oiler and a biodegradable lubricant like olive oil.
    "It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so." Mark Twain

  15. #15
    UTD Member limeyx's Avatar
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    Quote Originally Posted by AzTek Diver View Post
    Actually I think Joel has the right idea on this, just use his or someone elses tanks, then it doesn't matter.
    Thats a good policy in general airtools not withstanding IMO!

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