EVs have massive torque from zero speed. Horsepower is just a fake number derived from torque. A Model Y is both heavy and makes 500ftlbs torque immediately.
Horsepower is just a fake number derived from torque.
I don’t really disagree with your earlier comment, and I agree that the shape of the torque curve matters a lot when it comes to the practicalities and experience of driving a vehicle, but, uhh, what you said here is just completely wrong.
Force and speed (torque and RPM) are both components of power (horsepower is torque * RPM / 5253). Saying that the RPM, or time component, of that equation doesn’t matter is the same as saying it wouldn’t matter if it takes 10 seconds or 10 years for a crane to lift a load at a construction site, since its lifting the same weight either way.
To put it another way, with a long enough lever I can exert enough force to start a passenger train rolling down the tracks with just my own arms (and in fact, people do something similar using compound levers). But what that doesn’t let me do is move a passenger train at 200 MPH like high speed rail lines do. There is no arrangement of gears or mechanical linkages that will let a single human being power a high speed rail line like that, the human body does not have enough power output.
EVs have massive torque from zero speed. Horsepower is just a fake number derived from torque. A Model Y is both heavy and makes 500ftlbs torque immediately.
Both are very limited comparability especially between drive types.
Torque was normally measured ahead of the gearbox and that introduces a whole pile of extra messiness.
Power is relevant once you’re into higher-speed regimes e.g. merging onto a fast road, overtaking, and climbing hills (especially if towing).
Force-speed or acceleration-speed curves would be nice.
I don’t really disagree with your earlier comment, and I agree that the shape of the torque curve matters a lot when it comes to the practicalities and experience of driving a vehicle, but, uhh, what you said here is just completely wrong.
Force and speed (torque and RPM) are both components of power (horsepower is torque * RPM / 5253). Saying that the RPM, or time component, of that equation doesn’t matter is the same as saying it wouldn’t matter if it takes 10 seconds or 10 years for a crane to lift a load at a construction site, since its lifting the same weight either way.
To put it another way, with a long enough lever I can exert enough force to start a passenger train rolling down the tracks with just my own arms (and in fact, people do something similar using compound levers). But what that doesn’t let me do is move a passenger train at 200 MPH like high speed rail lines do. There is no arrangement of gears or mechanical linkages that will let a single human being power a high speed rail line like that, the human body does not have enough power output.