• @will_a113@lemmy.ml
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    11 year ago

    Maybe the most surprising thing here is that regular biking is still twice as efficient as e-biking even given our mediocre metabolic efficiency and a physique that isn’t exactly designed for the bicycling motion.

    • @highduc@lemmy.ml
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      -11 year ago

      Wdym? The faster a car moves (or anything, not just a car) the less efficient it’s gonna be, because it has to fight against more and more wind resistance.

      • @JohnnyCanuck@lemmy.ca
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        11 year ago

        Wdym? The faster a car moves (or anything, not just a car) the less efficient it’s gonna be, because it has to fight against more and more wind resistance.

        That isn’t entirely true. At lower speeds there may be other inefficiencies that are worse than wind resistance (since wind resistance becomes negligible at low speeds).

        It will depend on the vehicle, but for example, small gasoline cars are more efficient at ~70 km/h than at lower speeds. Electric vehicles will likely be more efficient at lower speeds (~40 km/h) than gas vehicles, due to (lack of) gearing but there will still be low speeds where they are less efficient than higher speeds.

        https://www.researchgate.net/figure/ehicle-energy-economy-at-different-speeds_fig1_326822085

  • @SkyNTP@lemmy.ml
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    1 year ago

    Now do one where you A) normalize this to the same trip distance (not speed, so that these choices for a single trip become meaningfull) and B) convert the kWh into CO2 emissions, including the emissions in growing and transporting the various power and food production methods used (coal to solar, locally produced veggies-air shipped beef)

    • @vithigar@lemmy.ca
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      1 year ago

      It’s already normalized to distance, the graph is showing kWh/km. The speed is just there for additional context.

  • @Donebrach@lemmy.world
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    -21 year ago

    Yeah, micro mobility is great on paper when you’re young and live in an accessible city with flat topography. Years ago I became (and still am) a bicycle commuter and I am ENTIRELY SICK OF IT. I want a fucking car. I am tired of biking in the rain and the snow and the cold. It fucking sucks.

    Also If I didnt have the ability to purchase an e-bike recently I’d be fucked with the terrain of the place I am currently stuck living (and even that doesn’t quite cover the situation).

    Also I am tired of minor injuries compounding year over year due to the simple fact that I am using my body as both the engine and support structure to move myself, vehicle and cargo around just to live.

    It was fun 10 years ago but now I’m just like give me a fucking cargo van.

    • @Dicska@lemmy.world
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      1 year ago

      I’ve been telling everyone how most people don’t need a car in a big enough city (I’m in Europe), and how much more efficient (PROPER) public transport is.

      …And then I get the work commute metro trains where stupid/inconsiderate/disgusting people still get on the packed train despite being sick, keep standing in my kidney and sneeze/cough at others (without a mask, of course) and sniff their nose all the way. Every single time when that happens I dream about having my own car where I don’t have to deal with this (or an idiot blasting TikTok from their speakers, being drunk+loud, smelly, etc.).

      I still won’t have a car, but man, sometimes the right decision isn’t the easiest.

      • @Dasus@lemmy.world
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        1 year ago

        I live in a city with very good public transport which I use constantly. I also have an E-bike.

        However, one needs to note that if I buy something big (extra lot of groceries, a new computer, a painting, anything that doesn’t fit in a backpack), using PT is pretty inconvenient. Especially when I’d be faster just carrying the thing home from Ikea, since I only live some 2km away, but the bus routes don’t go across the boroughs (but radially from the center outwards, with a few “lateral” buses), so I’d take two buses and it’d be some 10km. And if it’s raining and I have an item that shouldn’t get wet…

        Also, taking a cat to the vet for instance.

        I’m just waiting on when public transport will be supplemented with small city EV-s you can rent for a few hours cheaply. Like those e-scooters, but small cars, and with more regulations.

        I know an apartment building which gives the tenants (mostly young students) the option to reserve and rent an EV for just a few euros an hour. And you don’t need to fill the tank, so it’s pretty nice.

    • @heartpatcher@lemmy.world
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      11 year ago

      Had a neighbour in his 80, had multiple leg operations and he still used to take a daily bike ride to keep fit. Not to mention that even if bike commutes suck, they improve your mental health considerably, even if you go in the rain/cold.

      And most importantly of all, those who can take the bike cover those who can’t. So please enjoy your car ride, but take the bike when you can.

      • @Donebrach@lemmy.world
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        -11 year ago

        Do you personally commute by bike 100% of the time for literally every outing to get to work or run errands? Because I do, and have for a decade. I’m over it.

    • @stabby_cicada@slrpnk.net
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      01 year ago

      Also I am tired of minor injuries compounding year over year due to the simple fact that I am using my body as both the engine and support structure to move myself, vehicle and cargo around just to live.

      I’m sorry you’re getting pushback and criticism for this. As someone who physically can’t bicycle and struggles with mobility, I strongly support well designed and well maintained walkable communities, bicycle infrastructure, and effective public transit. And I recognize that, for some people, the basic right to travel and work and generally function in society requires personal car ownership.

      That doesn’t mean I sympathize much with people who live in subdivisions off major highways with no grocery stories within twenty miles - there shouldn’t be any community anywhere designed to require car ownership.

      But I also don’t sympathize much with people who want to ban all personal vehicle ownership from their little 15 minute utopias. Disabled people exist.

      • LW_defederate_from_Threads
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        1 year ago

        I agree with this. Cities shouldn’t be car exclusive, but eliminating cars completely would also alienate villagers and people living in rural areas, in addition to disabled people.(written by an european who has family in those regions)

    • Preach it.

      I am old enough where these sorts of points have much heavier weight. I can bike, but my body is not happy after any non-trivial distance.

      I now have my eye on an electric recumbant trike. It solves all of my ergonomic (back) issues, and the electric would help with some of the terrain struggles and help me more accurately predict travel time. Plus, there’s a bit more storage for, e.g., a change of clothes for the destination. They’re damned expensive, though, even the cheapest.

      Doesn’t solve the weather issue, but I’m sure someone makes a version that has a shell; at which point you’re essentially just driving around a small, slow, electric car with a lot of limitations.

      I’m still going to replace my bike with a recumbent, though. My body just can’t handle that position for prolonged periods anymore.