cross-posted from: https://aussie.zone/post/34370513

Anon likes bikes

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[–] 86 points 1 month ago* (last edited 1 month ago) (4 children)

Not only are bikes one of the most efficient forms of transport, they might be the most efficient form of powered locomotion, period. A human being on a bicycle is far more efficient than anything in nature.

ETA: Unless you consider e-bikes a separate category, since they (in some cases?) add regenerative braking on top of everything else.

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  • [–] 48 points 1 month ago (8 children)

    Yes, actually:

    (Besides a 'velomobile', anyway ... which is basically just a bicycle with bodywork for better aerodynamics.)

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  • [–] 5 points 1 month ago (1 child)

    Velomobile looks like fun but they cost so much. Seems like they are typically custom built and use carbon fibre. So several thousand or more. Meanwhile my bike was like £600.

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  • [–] 3 points 1 month ago

    Correct me if I'm wrong, but I assume that the main upside of a velomobile is removing the un-aerodynamicality of the human on it

    Which makes me wonder whether a bike without a biker will be more aerodynamic than a velomobile

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  • [–] 1 point 1 month ago (2 children)

    curious where lighter than air vehicles and trains end up on there

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  • [–] 5 points 1 month ago

    Blimp efficiency depends on size, a big one would be on the bottom right. But then some wind would send it tumbling around and it would crash into Jet transport and Horse, rapidly disintegrating as it pulverizes Human on a velomobile against the bottom axis.

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  • [–] 3 points 1 month ago (1 child)

    Same as sailing ships I suppose, if you are just using the wind like a hot air balloon anyway.

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  • [–] 29 points 1 month ago (1 child)

    e-bikes a separate category, since they add regenerative braking on top of everything else.

    Actually, the vast majority of e-bikes do not have regenerative braking.

    Because on a bike, you don't actually tend to use your brakes very much or very often. And even when you do use the brakes, you're slowing a smaller mass down from a lower speed (compared to cars with regen braking). There's just not much energy there to be harvested from regen braking. Which makes it generally not worth the extra money, weight, and complexity to include a regen braking system.

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  • [–] 3 points 1 month ago (2 children)

    regenerative breaking on a bicycle ? not on mine thank god. I often coast down hills, last thing i want to have to do is pedal so the damn bike don't brake

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  • [–] 9 points 1 month ago (1 child)

    I'm not sure why anyone would design it like that. I would expect it to be linked to the brake handles, not active at all times.

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  • [–] 2 points 1 month ago

    No one would do that. On mine it's a switch but most are wired to the brakes as you mentioned. The main benefit is really just that you get brakes for free without any wear, though it is only generally possible on direct drive hub motors.

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  • [–] 4 points 1 month ago

    I have a hybrid with regenerative breaking. I'm not sure how well it compare to a theoretical regenerative ebike setup, but at least with my car I never need to use the gas even when the regenerative ebike is on.

    That, and when I do give it gas it automatically decreases the regenerative breaking, which I imagine wouldn't be too hard to implement on a bicycle.

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