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Tuesday, 19 August 2025

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A bit OT for this OT post, but a fascinating (and geeky) report praising the Ariya's engineering popped up in my feed the other day and I wondered if you'd seen it. It concerns the motor and its various innovations, among them a magnet-free (and therefore rare-earth free) design.

Text summary:
https://leandesign.com/nissan-ariya-magnet-free-motor-teardown/

Video of the teardown: https://www.youtube.com/watch?v=BFmp9ODkCA8

Oh, man. I have been holding my tongue about all this EV stuff because I have too much to say (e.g. It's *the software*, Jerry!), but you've really hit my nail on my head. You are reminding me about my first month with my first EV.

I bought a pretty spiff used BMW i3 because of Tom Moloughly's reviews. Mine got 121 miles of range and held 33 kWh of charge. I had a regular 99 mile trip into Portland. There was a fast charger I could use about 55 miles into that trip. All these things being nicely divisible by 11 excited the "numbers" part of my noggin and I, um, went to town with them. Started dividing all my routes into 11 mile segments and looking for places I could stop for 11, 22, or 33 minute moments to bump the charge, well, just because. There was a small gas tank for a range extender and I somehow managed to make 11s fit with its monitoring-- maybe because I typically got 66 miles out of it? Oh boy.

It was all very silly, but I really loved that car and it was a honeymoon month of unnecessary calculating and of celebrating 11. On warmer days, 12 would take over the role of 11. On colder days, 10 would step in. Anyway.

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