3 ms·

Infinite torque...?

• B1FF_PSUVM 4y ago
  Probably thinking of https://en.wikipedia.org/wiki/Jerk_(physics) https://en.wikipedia.org/wiki/Jerk_(physics) If acceleration were an instantaneous off-on step, that would be a https://en.wikipedia.org/wiki/Dirac_delta_function https://en.wikipedia.org/wiki/Dirac_delta_function
• jeffbee 4y ago
  ~ much more torque than can practically be delivered between the tires and the ground, which is why using a vacuum to improve the traction and eliminate the transient squatting motion of the vehicle is so important in a short race. Drag racers have had this problem for a long time; those races last less than 5 seconds. This hill climb is interesting because it's only a bit longer, half a minute, which really changes the equations for electric race cars vs. something like Pikes Peak which is 8 minutes to the top (and is now also totally dominated by electric cars).
• mywittyname 4y ago
  This is a weird car guy myth that gets tossed around. The thinking is that, electric motors make uniform power output at any RPM, and torque = some_constant * power_output / RPM. Thus, as RPM goes to zero, torque goes to infinity. Obviously, this is wrong in the real world for so many reasons, but that doesn't stop this from getting repeated.
  • throwaway0a5e 4y ago
    Repeating it is a great way to paint yourself as one of those dolts that likes to act like they care about EVs for the virtue points. Everyone who's ever used a drill knows that while speed and torque are inversely related in most of a motors normal operating range you don't get insane torque at low speed. Of course you can wind a motor differently to mitigate this somewhat but still, not a huge improvement. You wouldn't see reduction gears on all sorts of things if this were the case.