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Comment on Tesla confirms it has given up on its Cybertruck range extender to achieve promised range

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.

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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.

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- acockworkorange@mander.xyz ⁨4⁩ ⁨weeks⁩ ago
  It’s supposed to tow. In theory.
  
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  - ChickenLadyLovesLife@lemmy.world ⁨4⁩ ⁨weeks⁩ ago
    LOL
    
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    twice_hatch@midwest.social ⁨3⁩ ⁨weeks⁩ ago
    I’ve seen arcade games built tougher than the interior of that POS lol
    
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- Usernameblankface@lemmy.world ⁨4⁩ ⁨weeks⁩ ago
  The load of getting this brick up to speed quickly so the driver can show off
  
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- acockworkorange@mander.xyz ⁨4⁩ ⁨weeks⁩ ago
  Basically they use the same size motor everywhere, and your total torque and power is dependent on how many you’ve got?
  
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  - _stranger_@lemmy.world ⁨4⁩ ⁨weeks⁩ ago
    pretty much. I believe all the cars use the same motor except for the plaid versions (or maybe just the S plaid?) that has a different motor that’s designed to hit higher rpm’s
    
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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.

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