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FAQ’s (and answers) about electric motorcycles.

Discussion in 'Electric Motorcycles' started by voltsxamps, Aug 29, 2020.

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Have you rode an electric motorcycle?

  1. Yes, recently

    11 vote(s)
    50.0%
  2. Yes, a long time ago

    2 vote(s)
    9.1%
  3. No, but interested

    8 vote(s)
    36.4%
  4. No, and not planning to

    1 vote(s)
    4.5%
  1. voltsxamps

    voltsxamps Advolturer

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    An excellent video on charging electric motorcycles.. why some charge super quickly while others can leave you napping for hours.

    :pynd vs :gerg

    #21
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  2. ZoomerP

    ZoomerP . Supporter

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    #22
    voltsxamps likes this.
  3. ZoomerP

    ZoomerP . Supporter

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    #23
  4. chainslap

    chainslap BlessedarethesicK Super Supporter

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    So maybe the wrong thread but seems appropriate for here.

    And maybe a dumb question and I'm ok with that.

    Why can't they turn the wheel's rotational force or energy or whatever you want to call it into a supply chain for a small onboard generator that would constantly be charging your batteries so that you would always have a fully charged bike, car, scooter.

    Even just one wheel connected to a generator while in motion should be enough to keep the battery charged. Even if you needed an inverter it should still work.

    It makes sense in my head. What am I missing in reality?
    #24
  5. SteveAZ

    SteveAZ Long timer

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    You need to bone up on the laws of thermodynamics... it will take more energy to push the wheel than the generator will produce so in the end you only run things down faster

    Regen's a different issue but even then the energy recovered from that isn't all that great and there's still no free ride
    #25
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  6. Bt10

    Bt10 Long timer

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    Law of Thermodynamics

    Generator heads are sometimes rated at the horsepower needed to turn them. The power you want from a wheel generator will need to be generated by the drive - plus all the inefficiencies of loss in the systems. essentially, you would probably be looking at 1.5xenergy to get regen.
    #26
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  7. chainslap

    chainslap BlessedarethesicK Super Supporter

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    Good points. I'm not thinking free energy by the wheels spinning. I understand you have to generate the energy to get the vehicle to move and the return would be zero like a three phase ac wave in a circuit.

    But I still don't see why they can't get around it with gears or pulleys or something. And maybe that's why. You can't have two different forces working against each other. One to produce the initial momentum and one to generate current to charge the battery.

    I don't know. Just seems like there should be a way. And I'm sure if there were it would be exploited by now.

    Thanks for answering and making me think more about it.
    #27