moonbunny comments on Car tires shed a quarter of all microplastics in the environment. Urgent action is needed

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[–] moonbunny@sh.itjust.works 25 points 2 years ago (5 children)

Maybe there’s some kind of a wheel, like a metal wheel that could just glide across narrow metal surfaces that could follow a set path….

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[–] kautau@lemmy.world 8 points 2 years ago (4 children)

imagine if it had a flange, so around turns the wheels could hook into the the metal surfaces so they wouldn't go off them, that would sure be neat

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[–] FrederikNJS@lemm.ee 7 points 2 years ago (3 children)

Actually the flanges are only an additional safe guard. The train wheels are actually a bit cone shaped which makes then self-centering on their own, even without the flange: https://youtu.be/Nteyw40i9So

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