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by Mikeb85
2475 days ago
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Porsches have never really been about straightline speed. Always about overall performance and a sports-car feeling. I'm guessing they optimized things like power, gearing and weight placement to offer good acceleration through a range of speeds with amazing handling and decent range at speed. |
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I'm wondering what we're missing here. 5% efficiency improvement at high speeds isn't anything to write home about today. The transmission is a known quantity -- it's just gears, it won't get more efficient as they develop it. The efficiency of the whole system (battery/drivetrain/regen/motor/aero/etc) can be optimized quite a bit going forward, but if the 2-speed transmission will only ever get us a 5% increase, I'm not sure it's worth the added weight and complexity.
Obviously Porsche knows what they're doing, and it may be about thermal management on the Autobahn more than about outright efficiency, but I'm skeptical.
If this were 2010 I'd say "yeah, obviously Porsche knows something about building a real sedan that you can take on a real highway trip, Tesla has no idea what they're doing".
But, having produced actual sedans that actually work, and Porsche going with a more complicated system for 5%.. I don't know what I'm missing.