The CIXI Heritage Chainless Altitude uses novel energy recovery unit to power a pair of hub motors

  • queermunist she/her@lemmy.ml
    link
    fedilink
    English
    arrow-up
    3
    ·
    edit-2
    12 hours ago

    Downhill could be used for energy recovery in theory - when the gyroscope registers the rider is going down hill it could kick in a low-level regenerative mode that needs to be pedaled through to keep momentum. Would tire the rider out though!

    • friend_of_satan@lemmy.world
      link
      fedilink
      English
      arrow-up
      1
      ·
      edit-2
      5 hours ago

      Regenerative braking is not what they are talking about. The cranks on this bike are not physically connected to the wheels. Turning the cranks generates electricity which is used to power the electric motors. This is much less efficient than having the cranks physically turn the wheels.

      Ebike motors are roughly 75% efficient, so we’re losing about 25% just on the output. Assuming the same number on input, this bike would produce 56% output for the energy put into it by the rider.

      But yes, regenerative braking would be great. I wish my ebike had it.