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DIY Axial Flux alternator

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Uploaded by on Dec 15, 2007

DIY alternator, free spinning.
Zero cogging due to no iron in the stator.
Approx 25 watts of power.More info and plans on my site
http://www.gotwind.org/Axial_Flux_Alternator.htm

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Uploader Comments (gotwind2)

  • Would anyone here know how Long (aprox.) would take to charge a 12V, 50amp/hr battery with this 25W alternator ?.

  • 25w/12v = 2 amps (ish)

    50Ah/2A = 25 hours from flat.

    You don't really want to run batteries flat, 50 % discharge max ideally for lead acid batteries.

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All Comments (18)

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  • wouldn't it make more sense to connect a whined up clock mechanism to a generator then you can have it inside during the winter and simply wind it up once a day for electricity those grandfather clocks keep accurate time, they turn nonstop for about 24 hours, i've never seen anyone connect a whind up mechanism to produce electricity. just those stupid hand crank ones you have to constantly crank.

  • hello gotwind, Can I ask you something? How does one know how many times to wind a stator coil and with what gauge? Everyone seems to make videos on how to make them without even explaining the fundamentals. Some guys even wind with 2 or 3 strands at once yet never explain why they do it. It is frustrating to not understanding this concept.

  • Hi, we have a selection of renewable energy courses in our autumn Brochure.

    visit imecofarm for more details. Thanks. Eddie

  • gotwind2, would there be any cogging, if the stator was built this way to put out about 5-10 amps at low RPM's, say about 200rpm ? I'm trying to understand more about the relationship between amp draw & rpm's. to the cogging affect. before I build my own. thanks again

  • Thanks for your reply and have a Great Holiday Season

  • So cogging only occurs when there is magnetic material in the stator? Is that true, or does it only reduce cogging when there is no magnetic material in the stator?

  • i gotta make me one of these bad boys

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