Slightly off-topic, but I figured this would be a good source of people to ask...
I've been thinking about the viability of using electri motors to directly drive the wheels of a car. No transmission, or perhaps a single gear reduction (say a 6500rpm max spin motor with a 3:1 gearing).
But my main curiousity is:
Will the amount of electricity required to keep the car at say, 40mph, be the same if the electric motor is at 3500, as it would be at 1500rpm(such as if it were going through a transmission)?
Or would it have to use more power since it is at a higher rpm, even though it would be under an identical load?
So I guess the question ismost easily condinsed as: Is the draw of an electric motor more dependant on load, or on rpm?
Thanks,
--Ash
I've been thinking about the viability of using electri motors to directly drive the wheels of a car. No transmission, or perhaps a single gear reduction (say a 6500rpm max spin motor with a 3:1 gearing).
But my main curiousity is:
Will the amount of electricity required to keep the car at say, 40mph, be the same if the electric motor is at 3500, as it would be at 1500rpm(such as if it were going through a transmission)?
Or would it have to use more power since it is at a higher rpm, even though it would be under an identical load?
So I guess the question ismost easily condinsed as: Is the draw of an electric motor more dependant on load, or on rpm?
Thanks,
--Ash