Spring regen is hard because you need a very big Spring to store the energy of 8... | Hacker News

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		londons_explore on Nov 20, 2020 \| parent \| context \| favorite \| on: Spring-powered wheel claims to be ‘E-bike alternat... Spring regen is hard because you need a very big Spring to store the energy of 80kg of bike at 30mph.

mleonhard on Nov 20, 2020 [–]

Maybe air compression would work better?

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