A 4-wheel electric bike,
. . . you can produce electricity, by turning the pedal, and
. . . store it in the battery.
This method does not require a complicated chain structure.
https://www.youtube....h?v=UErjglsTLiw
10-28-2017 Source: #Transportation: a completely new form!
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#Transportation: a completely new form!
Started by eds, Oct 28 2017 06:16 AM
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