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mortos

74

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2023-10-25

Created

Recent Activity

  • DDG (Bing I guess?) is pretty quick at that as well. 35 minutes later, your comment is already indexed.

    Though I can't speak to their speed with Reddit, who is actively hostile to non-Google indexers.

  • I think it's mostly from aerodynamics. Lowering the car could help but even just smaller rims, with the same overall diameter (rim + tire), can have a 15% impact on range. This Engineering Explained[1] video does an okay job with some of the math but he clarifies it well with a comment:

    > CLARIFICATION! Why do bigger wheels mean worse efficiency, when the overall tire diameter remains the same? This comes down to aerodynamics. A 20" wheel will cause more of a disruption in airflow than an 18" wheel. That's why Tesla (and others) uses aero covers on their wheels (Car & Driver testing showed it gives about a 3% efficiency bonus at speed). The smaller the wheel, the more of the side profile of the wheel & tire is perfectly flat (the tire is flat, the wheel open: more tire = more flat area, less open area). Ideally, you'd have just a plain, solid sheet for the wheel, but obviously that's not idea for brake cooling. Wheel covers are today's common compromise as they have some airflow, but minimal.

    [1] https://youtu.be/NYvKxsYFqO8

  • Subaru almost certainly uses radars for both cruise control and blind spot detection.

    Your link isn't exactly a white paper, here's a Subaru link that mentions radar: https://www.subaru.com/vehicle-info/articles/what-is-adaptiv...

  • Weight has nearly no effect on range of an EV. The YouTube channel Aging Wheels has two good videos on this.

    Here he talks about towing, and he demonstrates loading the truck to max capacity makes nearly no difference: https://youtu.be/UmKf8smvGsA

    He also covered an attempted Cannonball run where they stuffed two extra battery packs into a Rivian R1T: https://youtu.be/yfgkh4Fgw98

    Real differences makers are smaller wheels and aerodynamics

  • > While drafting the fact sheet, we checked two headline policy ideas that the One Big, Beautiful, Bill introduced: the early sunset of the consumer EV credit and a new $250 annual EV fee. While the annual fee was dropped from the final legislation, the $7,500 consumer credit now ends September 30th.

    > For the Equinox EV, these changes would cut its seven-year savings over the gasoline Equinox from about $9,000 to under $200. The Model Y also showed savings compared to its gasoline comparison under that less favorable scenario for EVs.

    That link also factors in fuel savings which depends on where you live. I'd personally never save on an EV if it costs more upfront.

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