• sad_detective_man@leminal.space
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    9 days ago

    I hope that doesn’t hurt to do. it’s cool as hell to see but I’m unaware of how many rotor blade impacts a hollow bird bone can take

    • WIZARD POPE💫@lemmy.world
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      9 days ago

      If I remember correctly the strength of these is quite low. They just spin really fast. They cannot even break skin and give you a cut afaik.

      • chiliedogg@lemmy.world
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        9 days ago

        They can cut the shit out of you. They won’t sever a finger or anything with the stock props (some aftermarket carbon fiber stuff might though), but they’ll fuck up flesh.

        • WIZARD POPE💫@lemmy.world
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          9 days ago

          The mythbusters tested this a while ago so things might have changed but even their heavy duty camera drone with carbon fiber could not go through bones if I remember correctly. Most drones will not seriously cut you or even break skin. The one in the picture definitely will not.

          • chiliedogg@lemmy.world
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            9 days ago

            A phantom will absolutely break skin. I flew one for years.

            Lots of newer drones like the Mavic series have folding props that won’t break skin, but those fixed-blade props were like getting hit with a weed-whacker.

          • turmacar@lemmy.world
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            8 days ago

            Just looked up the episode (2015, Ep8). (also some cool U2 stuff)

            They’re investigating whether it would be deadly by cutting through your neck. Drone tech has also changed significantly in the last decade. They literally have trouble flying straight and level and hitting the neck of their dummy. But their main problem is the drone hits something and falls away. They put the same smaller prop on a stick and saw into a plucked chicken. Their bigger one did actually slice the neck open before falling away.

            Modern drones have much more powerful motors. From personal experience even the folding blades will give you at least surface cuts. Do not randomly assume they will not cut you, especially if you grab them.

            • thedruid@lemmy.world
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              8 days ago

              This a dumb argument in general

              It would fucking hurt like hell to say the least and the bird doesnt deserve that

      • Saff@lemmy.ml
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        9 days ago

        Until it becomes an arms race, blades will be made of lightweight metals that are super thin to save weight and therefore sharp, and motors be built with more torque.

        • Spezi@feddit.org
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          9 days ago

          Nearly every consumer drone uses plastic blades and every modern one like the whole DJI lineup uses the folding ones which hurt much less as they can tilt back when hitting something.

          • chiliedogg@lemmy.world
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            9 days ago

            The Mavic series has folding blades. But the Phantom series pictured has rigid blades that are stiff enough they’ll fuck up flesh.

  • Nikls94@lemmy.world
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    8 days ago

    It’s a DJI Phantom, made entirely of plastic - the battery has about 50% of the weight of the drone, the weight should add to about 1400g, the motors are probably 2312 with 900-ish Kv (it’s like the HP of a car), stock propellers are about 10 inch in diameter - that would give it roughly 2.5 times more power than weight, so a maximum lift off weight of about 4000g (a little less than 4 lbs). Maximum speed is, according to the internet, 45 mph.

    For clearance: my self-built drone with a carbon fiber frame has 1200 grams (with battery), motors are 2207 with 1980Kv and propellers are 5 inch - a quarter of the size. I calculated about 12 times power to weight, making it able to lift off with up to 12 kg or 20 pounds. I think the maximum speed should be around 80 mph.

    Yeah, the eagle probably destroyed it without getting hurt.

      • Nikls94@lemmy.world
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        8 days ago

        Weeeellll originally no, but I figured that showing a little more knowledge on this topic would make me sound a little more competent.

    • Waraugh@lemmy.dbzer0.com
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      8 days ago

      What resources are reputable to look into custom drone building? That sounds like a cool hobby for my teenage sons and I

      • Nikls94@lemmy.world
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        8 days ago

        Definitely Joshua Bardwell on YouTube! He even has a website https://www.fpvknowitall.com/ where he even has blueprints of builds and a lot of info! Reddit r/diydrones is very helpful, as well r/tinywhoops (small drones) and r/fpv (I posted my soldering there and was corrected multiple times.

        I’m deep into FPV where you fly with goggles, so I’m no expert in programming, but I’ve seen quite some posts about fully automated drones there!

        • Waraugh@lemmy.dbzer0.com
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          8 days ago

          Thank you so much for the resources, I’ll be going down the rabbit hole tomorrow and this weekend, my boys are going to be really excited, you made my day.

    • Allemaniac@lemmy.world
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      8 days ago

      send your blueprints to Ukraine and watch your intellectual newborn become the bane of the autocratic world