Electrics produce maximum torque at 0 rpm …
Comment on 28-pound electric motor delivers 1000 horsepower
Sam_Bass@lemmy.world 4 weeks ago
How much torque though? HP is nice but power is in the torque as much if not more than the voltage(HP)
kalkulat@lemmy.world 3 weeks ago
Zink@programming.dev 4 weeks ago
The voltage/hp comparison there doesn’t really fit.
Power is in watts or horsepower. You multiply the torque with the RPM and a scaling factor to get power.
A higher voltage system could probably be expected to produce more torque and power from the same size motor, but a lot depends on the design of the motor.
Then to answer “how much torque though,” I haven’t looked into it but electric motors have a very nice torque curve across the RPM range. If a motor made all that power with low torque, then it must spin at super high RPM and need to be geared down.
Sam_Bass@lemmy.world 4 weeks ago
That motor doesn’t look like it has enough mass to properly make enough torque to drive the weight of a car even if said car it made entirely of carbon fiber
Zink@programming.dev 4 weeks ago
Totally, and I think that’s why they thought it was worth a press release. In the article they go right to how they’re setting a new power density record with this design.
Electric motors are just really power dense. The article says they managed a short term peak of 1,000 hp with that little flat 12.7kg motor and the continuous output could still be half that.
Just the cooling must be crazy.
Out of curiosity I looked up something comparable. It looks like high-performance integrated drive units that have other stuff like the single-speed gearbox, differential, and inverter are still only in the dozens of kg.