Electric motor venting

Discussion in 'Shop Talk' started by wy0mn, Sep 27, 2005.

  1. wy0mn

    wy0mn Transplanted RedNeck

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    I have a sealed electric motor that I think may overheat with the application I have planned for it.
    Can I safely remove the housing and vent it. Has anyone ever done this?
    How can I manufacture, or where can I purchase, radiant cooling fins?
    Thanks
    Lex
     
  2. agmantoo

    agmantoo agmantoo Supporter

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    If this an intermittent use motor you can mount a small squirrel cage fan and force cooling air thru the motor housing. An interesting note....an electric motor will attempt to make the horsepower required to perform the task. The detriment of this is excess heat which will destroy the motors insulation causing failure. Obviously getting rid of the heat is essential and as mentioned above will accomplish the task. I personally have witnessed a test stand that was powered by a 20 HP motor run for days making 30+ HP when setup with a good cooling fan and ducting.
     

  3. 2story

    2story Well-Known Member

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    sounds like you are misusing the motor, amperage=heat, use the correct motor for the application.
     
  4. rambler

    rambler Well-Known Member Supporter

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    That is what I was thinking too when I read this, get a bigger motor that is appropriate for the job.

    --->Paul
     
  5. wy0mn

    wy0mn Transplanted RedNeck

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    "Designer" motors for this application are simply outta my budget.
    I'm making an electric bicycle (trike actually).
    The requirements called for a 24v, 1-2hp motor with less than 3000 rpm.
    Price one lately? Simply absurd.
    I have a 12vdc, 1.5hp motor rated at 2500 rpm's. Its a sealed winch motor.
    It will have to run less than 30min, twice daily. (I live 5mi from work.)
    I figure that if I can add a small cooling fan and maybe a heat-sink, I can get by with it.
    Its a combo of the 'slipstream' electric, and the 'cruzbike' design, if anyone is curious, a web search will explain better than I can.
    Keep on with the inputs, positive or negative.
    Thanks
    lex
     
  6. Explorer

    Explorer Well-Known Member Supporter

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    Your motor should work fine just the way it is, unless you will be transporting lots and lots of weight.
     
  7. 2story

    2story Well-Known Member

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    I understand your thinking, i am a scrounger, i would simply keep looking for a "junk" motor while i tried the other, I am a mechanical person not a mechanical engineer, often there is not need to engineer parts and pieces because someone else has already done that work. good luck