this post was submitted on 16 Oct 2025
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[–] djsoren19@lemmy.blahaj.zone 2 points 4 months ago (4 children)

so, obvious reasons why this cannot work.

Is there anyway to like, siphon off the energy though? Like say, you pedaling produces 600kJ/hr. You have 400kJ/hr going into the bike to produce motion, but then 200kJ/hr goes into a battery. You'd move slower but generate stored potential energy.

I'm not really sure why you would want this, other than the concept of a self-charging electric bike, but on paper it sounds possible?

[–] socsa@piefed.social 2 points 4 months ago

A normal bike drivetrain is around 95% efficient, which is more efficient than the Regen circuitry you could get in such a form factor. Therefore it makes more sense to use pedal power for direct propulsion since that will directly reduce battery more efficiently than using it for charging.

This is different than a series hybrid because car drivetrains are very inefficient compared to a bicycle.

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[–] Rooskie91@discuss.online 2 points 4 months ago

Physics's older brother gonna be looking for this guy.

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