Two in the back, one in the front. There’s also a two and four motor version.
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acockworkorange@mander.xyz 4 weeks ago
Why the third motor? One for each of the front wheels and one for the rear?
DoubleSpace@lemm.ee 4 weeks ago
UnderpantsWeevil@lemmy.world 4 weeks ago
Two in the back, one in the front.
The Shocker
Tja@programming.dev 3 weeks ago
That’s the other way around.
acockworkorange@mander.xyz 4 weeks ago
That makes even less sense. Distributing mechanical power on non steering wheels is easy, but for steering wheels requires a more complex and expensive coupling, as well as power losses. Just… why?
_stranger_@lemmy.world 4 weeks ago
I believe the three motor versions is to add extra power under load to the rear wheels.
The motors are essentially in line with the wheels (they have gearing but it’s minimal and internal to the motor housing, not attached like an automatic transmission would be, if that makes sense.)
The “three motor” design is just the single motor design up front and the dual motor design in the back.
I’m not sure if they ever actually released the single motor version though.
ChickenLadyLovesLife@lemmy.world 4 weeks ago
extra power under load to the rear wheels
Lol like there’s enough room back there to add a load.
Excrubulent@slrpnk.net 4 weeks ago
More power to the rear makes sense because you get more traction at the rear under normal acceleration, not just when carrying a load. It’s pretty typical of electric cars to do this, just like it’s typical to have bigger brakes on the front of all cars, because there’s more traction at the front under braking.
There’s also the issue of torque vectoring. Without a differential, torque vectoring is essential, but under acceleration torque vectoring to the rear wheels is much more effective than to the front wheels, so that’s another reason to split the rear power but not the front.
FreedomAdvocate@lemmy.net.au 3 weeks ago
Why? More power……
XeroxCool@lemmy.world 4 weeks ago
How do you figure dual front motors would alleviate any of what you said a front diff would need? Dual front motors will still be rigidly mounted to the chassis, requiring flexible couplings. The rear is also independent, requiring the same flexible couplings whether it’s a diff or motors. CV axles all around.
acockworkorange@mander.xyz 4 weeks ago
You wouldn’t need a front differential, for one. But you’re right, unless they somehow made a directly wheel coupled motor that turned with the wheel, it l still needs CV couplings.
As for rear, they don’t need CV axles. Two simple cross couplings are enough. The speed variability happens significantly when the wheels turn, going up and down is a negligible issue. Cars have been using the much chapter and simple cross couplings in the rear for decades.
Ledericas@lemm.ee 3 weeks ago
the 3rd one is a reality disortion field motor for MUSKRATS musk supporters.
endeavor@sopuli.xyz 4 weeks ago
One runs front wheels, one runs rear wheels and third one powers the mental gymnastics it takes to be a tesla owner in 2025.
acockworkorange@mander.xyz 4 weeks ago
LOL Monkey banging cymbals