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A comment on Tiny electric motor can produce more than 1,000 horsepower. Parent comment

Re:Tiny electric motor can produce more than 1,000 horsepower by thesz on Monday November 03, 2025 @10:00AM (#45799741)
Tesla Model Y's battery is 771 kg. The motor in Model Y weights about 45 kg, about three times as much as the motor in the article. By reducing dual motor configuration weight from 90 kg to 28 kg, we reduce total powertrain weight by 7%.
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Re:Tiny electric motor can produce more than 1,000 horsepower by robotresearcher on Monday November 03, 2025 @10:24AM (#45800060)
The new motor is also much more than double the power output of the Model Y motor, so the second motor and its wiring could be eliminated completely.
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Re:Tiny electric motor can produce more than 1,000 horsepower by hvb2 on Monday November 03, 2025 @10:35AM (#45800182)
No, because that second motor gives you AWD. Sure that's a feature you could go without...

But torque and power were never the limiting factor for an EV. You would only benefit on a track, and if you're taking a model Y there...

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Re:Tiny electric motor can produce more than 1,000 horsepower by robotresearcher on Monday November 03, 2025 @01:50PM (#45802754)
That's a great point I neglected, thanks. I bought a M3 with dual motor option mainly for the AWD.
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Re:Tiny electric motor can produce more than 1,000 horsepower by hedora on Monday November 03, 2025 @10:42AM (#45800272)
You’d need to add back in an all wheel drive powertrain. A typical drive shaft is 20 to 50 pounds (9 to 23 kilograms)

The motor is high torque, so I’d expect the drive shaft to be on the heavier end of that.

I’m not including the other power train components, but it’s easy to imagine it all adding to more than the weight of a second engine + wiring.

Also, having one more complicated power train is probably less efficient than two simpler ones, which implies a bigger battery.

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Re:Tiny electric motor can produce more than 1,000 horsepower by UnserMannInK on Monday November 03, 2025 @10:31AM (#45800133)
And shouldn’t it be possible to make the battery smaller with a more efficient motor?
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Re:Tiny electric motor can produce more than 1,000 horsepower by thesz on Monday November 03, 2025 @10:42AM (#45800268)
It is not indicated anywhere that this particular motor is more efficient than older ones in terms of the electric force conversion.

This new motor is more powerful, that's it.

Nothing was said about cooling or voltage requirements. The latter is important because higher voltage is more dangerous to work with or be near.

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Re:Tiny electric motor can produce more than 1,000 horsepower by UnserMannInK on Monday November 03, 2025 @11:47AM (#45801131)
Ah ok, that makes sense
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Re:Tiny electric motor can produce more than 1,000 horsepower by mulmen on Monday November 03, 2025 @11:18AM (#45800704)
The battery could be made smaller by whatever amount is needed to carry the marginal motor weight the advertised distance.
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Re:Tiny electric motor can produce more than 1,000 horsepower by NetMageSCW on Tuesday November 04, 2025 @10:54AM (#45812387)
Unfortunately incremental weight is not a big power user in BEVs so it likely would make no meaningful difference.
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