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David Elliott
Engineering Explained
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Comments by "David Elliott" (@davidelliott5843) on "Why Teslas Are Bad At Towing (Today)" video.
In U.K. the tow weigh is 85% of the vehicle weight. For large 4x4 that doubles. Max speed normal roads is 50. Motorways - you are allowed 60. I used to tow a big caravan (trailer) with a large diesel car. No matter how you cut it the miles per gallon was cut by 50%. At speed or ordinary roads with accelerating and slowing I could never beat 20mpg. Solo it would do 40mpg. Electric cars will be just the same. If your range is normally 200 miles that will drop to 100 miles. The only solution I can see is for trailers to have a car traction battery to support the car battery. Unfortunately that means less payload. But it does give both an easier time so efficiency might improve. Another option would be a generator in the trailer. OMG it’s not green. Well tough but it would get the job done. Also we could make generators a lot more efficient if we really wanted to.
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Down hill will be almost totally trailer brakes. The last thing you want is an (effectively) unbraked trailer trying to overtake. There won’t be any regen braking on the level there won’t be very much. But even if there was, the car batteries probably could not absorb the power fast enough.
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Jimmy M Trig no worries even with book tables. Calculus I always struggled. Largely because mathematician teachers could not understand how to teach it to newbies.
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Baby Magnum Physics is only arithmetic
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