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Cake day: 2023年7月29日

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  • Hub motors are pretty rare in the EV (car) space actually.

    Lordstown Endurance had a hub motors on each wheel. Almost all of those were bought back and scrapped. Aptera had hub motors in the initial design specs, but last I heard, that fell through and they are doing inboard motors with a continuous 2 speed transmission and driveshafts.

    Teslas has various multi-motor layouts, but none of them are hubs as far as I can remember.

    Mach E has 1 motor standard, 2 and motors on the GT.


  • There are some fundemental problem with making an EV look like a “normal car” though.

    EVs are more dense than their ICE counterparts. This means that the whole vehicle needs more structure to protect it in a rollover than an ICE of the same size. Thicker frames and pillars in a smaller car end up making it look bulgy and weird.

    I think (but not 100% sure) that EVs are required to have extra protection for the battery to prevent them from getting punctured and having a “thermal runaway” event. This makes the cars even more pudgy.

    The energy source and propulsion methods have changed, which will affect their design of the cars. Much in the same way early jet airplanes looked like regular airplanes with jets attached, EVs started as regular cars with electric motors. We’re currently in the weird transition phase of EV design. We’re seeing the EV equivalent of the P80 Shooting star, and maybe starting to get into some cars that are akin to the F86 Sabre. We have a long way to go until the design catches up to the propulsion.