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  • Ceiling Fan Generator?

    Discussion in 'The main mechanical design forum' started by jawnn, Dec 5, 2012.

    1. jawnn

      jawnn Well-Known Member

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      In my quest to build a pedal powered generator, I have come to conclusion that I need a low rpm high voltage motor. And that I will probably have to build one out of a ceiling fan motor.

      Please point me in the right direction for more information. You tube is confusing but interesting.
      http://www.youtube.com/watch?feature=endscreen&NR=1&v=GlpJBXu1nr4
       
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    3. Dana

      Dana Well-Known Member

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    4. jawnn

      jawnn Well-Known Member

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      I already watched those vedios
       
    5. jawnn

      jawnn Well-Known Member

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      what I really need is a book
       
    6. jawnn

      jawnn Well-Known Member

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      ok i give up , there is no book. I would rather just buy a motor.

      what am I to look for? low voltage and low rpm... I think the voltage should be more than the rpm , but not likely to find one......
       
    7. Boothby171

      Boothby171 Member

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      Well, for starters, a good human cadence is between 50-70 rpm.

      Depending on the type of output you're looking for...could you use a car alternator? Start cheap, with one from a junkyard, and go from there. You'd have to determine the sweet spot for the alternator's RPM, and then use a belt (the alternator already has a pulley on it, of course!) and a properly sized pulley on your stationary bicycle-like object to get the right ratio..
       
    8. nfmisso

      nfmisso New Member

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    9. jawnn

      jawnn Well-Known Member

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      car alternators are out of the question, they are made for high speed very power-full engines. I need a low rpm low voltage dc pm motor.
       
    10. Boothby171

      Boothby171 Member

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      Not necessarily agreeing with your logic, there, but nevermind...what is it, exactly, you are trying to do?

      What voltage do you want to achieve? AC or DC? What current are you hoping to obtain?

      You do know you only have about 1/4 hp, at best (190 W or less) to work with, right?
       
    11. jawnn

      jawnn Well-Known Member

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      I do not know exactly what hp I can maintain on the pedal power, but its gotta be close.

      I want to top-off my 28 amp-hours worth of batterers daily... at least one or two volts. I read some where that 100 watts is about it for pedal power...I could build a more efficient machine but I am starting to think I should go for wind power. well I really want to do both.

      watching the videos makes it look simple. My land lord is making a generator out of a bicycle wheel, all he needs now is a lot more coils and magnets. then we will see how much it can produce.
       

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