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  • #1

    back EMF bicycle

    Hello all:
    I am trying to build an electric bicycle, using a Bedini style repulsion motor, also capturing the back emf, to charge a second battery. Also, using the flyback. Any suggestions?
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  • #2
    Good Idea

    This is a good idea, but how or where are you going to mount it? The front wheel hub seems to a place which will look compact.
    Consider in mind that you may need several big heavy coils that may not be suitable for mounting on a bicycle. I'd prefer building a Lindemann motor for this purpose.
    Humility, an important property for a COP>1 system.
    http://blog.hexaheart.org

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    • #3
      e-bike

      Thank-you Elias
      First of all, I honestly don't know enough about the Lindemann motor. That said,this is one of the reasons I am here at this site, to see if I am able to connect with others that are interested in the same ideas I have. My idea, and I am now winding the coils, are ceramic8 magnets pushed around by 1, or two 600 wrap 18ga coils. Mounting is on the six gear rear hub with five sprockets removed. 12v for the system. One battery running, one charging. The bike is assisted, not solely propelled by the motor. Another thing, what I have seen of the Lindemann motor, seems I would need a metal shop to get the tolerances involved. The Bedini seems more likely, as I can cobble most pieces together. Thank-you again for your response.
      Dan

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      • #4
        RE: energy from the bicycle

        I have been impressed by a generator called a dynohub. If you look for them on youtube you will see they were converted into windmills.

        But I would check it out, it is one of the best generators on a bike I have seen.
        See my experiments here...
        http://www.youtube.com/marthale7

        You do not have to prove something for it to be true. However, you do have to prove something for others to believe it true.

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        • #5
          energy from the bicycle

          Thanks Theremart for the post.
          I had already looked at Sheldon's pages. They are for a stationary bicycle,connected to an alternator. They produce, or generate electricity, as opposed to propelling a vehicle. First I gotta say, golly Jiminy crickets, First post, and two elite members replied! That is why I like this site. All input is appreciated.
          On the other hand, I am looking to solve a problem. I seem to remember, way back in the seventies, someone using the EMF from a pedaled bike charging a battery, while using another battery to assist the pedal power.
          I may be wrong, the memory is not as sharp as it used to be.
          Dan

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