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Water resistant motor

Discussion in 'Electronic Basics' started by AA Institute, Oct 3, 2004.

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  1. AA Institute

    AA Institute Guest

    Hi,
    Can someone please tell me if there's a small, *water proof* DC motor
    available to buy which I can leave permanently outdoors? Even worse,
    it will get splashed by the waters in my miniature "lake" projects as
    depicted here:-

    http://uk.geocities.com/aa_spaceagent/LakeEuropa.html#Hydrobot

    (That's a large *pond* in an isolated location... hence I gave it a
    pet name of "Lake Europa"!)

    Thanks
    AAI
     
  2. Ian Stirling

    Ian Stirling Guest

    Yes.
    Torque, RPM, budget?
     
  3. Robert Baer

    Robert Baer Guest

    Try aquarium supply companies.
     
  4. Don Pearce

    Don Pearce Guest

    Any garden centre will do this.

    d
    Pearce Consulting
    http://www.pearce.uk.com
     
  5. Joerg

    Joerg Guest

    Hi,

    Why does it have to be a DC motor? The pump motors you can get at garden
    centers would be AC.

    Regards, Joerg
     
  6. Ryan Wheeler

    Ryan Wheeler Guest

    google for fish tank 12v water pump
    found this: http://www.altenergystore.com/cart/pumps.html
     
  7. Jeff

    Jeff Guest

    Looking at your site, how about a marine sump pump? Might fit the bill, is
    cheap, avalible all over the place, and could be hidden below the surface of
    the water.
     
  8. Rich Grise

    Rich Grise Guest

  9. AA Institute

    AA Institute Guest

    Hi Ian,

    The motor needs to be something very basic, small and 'toy-like'
    actually. It just needs to run off 4 x AA batteries or a 9 volt PP3.
    I just want it to keep the water surface stirring enough to stop the
    pond from freezing over completely, and endangering the fish.

    The motors of this type sold in Maplin (UK) are not water-proof, and
    when the stirring platform takes a dive into the water during a rain
    storm, the motor just ceases up and rusts. Budget... a couple of
    pounds!

    Thanks
    Abdul
     
  10. Gordon Youd

    Gordon Youd Guest

    DC motor with magnet on shaft sealed inside a plastic container, outside of
    the container have another magnet fixed to an impellor.

    Motor turns....... impellor follows.

    Just an idea!.

    Gordon.
     
  11. I read in sci.electronics.design that AA Institute
    You can get a plastic box rated IP66 or better from Farnell for a pound
    or three. Put your motor in it and make your float such that the motor
    is 150 mm above the water. The motor spindle can be 150 mm long with
    little problem, especially if you fit a simple guide, not a precision
    bearing, at the watery end.
     
  12. Or peanut butter jars. IP67 and cheaper ;)
     
  13. Guest

    What about an aquarium powerhead?
     
  14. I read in sci.electronics.design that Frank Bemelman <[email protected]
    The lids go rusty.
     
  15. Genome

    Genome Guest

    | I read in sci.electronics.design that Frank Bemelman <[email protected]
    | .invalid.nl> wrote (in <4160593d$0$43451$4all.nl>) about
    | 'Water resistant motor', on Sun, 3 Oct 2004:
    | >"John Woodgate" <> schreef in bericht
    | >| >> I read in sci.electronics.design that AA Institute
    <[email protected]
    | >> g.google.com>) about 'Water resistant motor', on Sun, 3 Oct 2004:
    | >>
    | >> >The motors of this type sold in Maplin (UK) are not water-proof, and
    | >> >when the stirring platform takes a dive into the water during a rain
    | >> >storm, the motor just ceases up and rusts. Budget... a couple of
    pounds!
    | >>
    | >> You can get a plastic box rated IP66 or better from Farnell for a pound
    | >> or three. Put your motor in it and make your float such that the motor
    | >> is 150 mm above the water. The motor spindle can be 150 mm long with
    | >> little problem, especially if you fit a simple guide, not a precision
    | >> bearing, at the watery end.
    | >
    | >Or peanut butter jars. IP67 and cheaper ;)
    | >
    | The lids go rusty.
    | --
    | Regards, John Woodgate, OOO - Own Opinions Only.
    | The good news is that nothing is compulsory.
    | The bad news is that everything is prohibited.
    | http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk

    Buy ones with plastic lids...... silly!

    DNA
     
  16. Actually, glass is a better enclosure material than peanut butter.
    Greater useful temperature range.
     
  17. You should cover the lids with peanut butter. The AA institute has a
    rather limited budget, so we need to be a bit creative.
     
  18. Genome

    Genome Guest

    | (in <CNZ7d.639$>) about 'Water resistant
    | motor', on Sun, 3 Oct 2004:
    |
    | >Buy ones with plastic lids...... silly!
    |
    | Actually, glass is a better enclosure material than peanut butter.
    | Greater useful temperature range.
    | --
    | Regards, John Woodgate, OOO - Own Opinions Only.
    | The good news is that nothing is compulsory.
    | The bad news is that everything is prohibited.
    | http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk

    Jesus fucking wept.

    Thats why they put the peanut butter inside the jar!

    DNA
     
  19. Robert Baer

    Robert Baer Guest

    Perhaps some of them might be DC, but AC vs DC is a good question; it
    is the size and functionality that seems to be paramount..
     
  20. Robert Baer

    Robert Baer Guest

    There are a few motors actually designed this way...
     
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