Electric Cars as Fast as Ferraris

Ubergrunt writes "A Welsh engineering company has made a motor to be used on electric cars that will make them as fast as a Ferrari. "The motor is revolutionary in that it contains no bulky permanent magnets. Instead it relies on transmitting electric pulses across up to seven rotors, arranged in different phases. These are "fired up" in turn, much like the pistons of an internal combustion engine. There are no gears - the motor provides enough torque at one revolution per minute to put a vehicle into motion - and it spins at up to 2,500rpm. "Size for size, we can provide 400% more torque than any type of motor currently available," says managing director John Bryant."

Comments

Gas turbines have this beat

[G4from128k]

The High Pressure Fuel Turbopump on the space shuttle has this power-to-weight ratio beat by a mile. The two-stage, eleven-inch diameter by 3 foot long turbine delivers 75,000 horsepower and weighs about 775 pounds. That works out to 100 hp per pound.

Of course, you need a supply of liquid hydrogen and oxygen to run the beastie, but if your really need the power, this is the way to get it.

If LH2 and LOX are too exotic, then try a helicopter gas-turbine. A 600 pound gas turbine can easily provide 5,000 hp.

The counter-argument is that a gas turbine needs a serious transmission, which adds to the weight of the unit. The counter-counter-argument is that these electric motors need batteries or a motor-gen set which also adds (arguably more) weight to the vehicle.

Re:the oil and car industry will band together

[Firethorn]

which means 4 transmitions

Did you RTFA? These motors are designed to be hooked directly up to the wheel. That means that this engine doesn't NEED any transmission because it generates enough torque at 0 RPM to move the vehicle, and can rotate fast enough to propel the vehicle at all speeds.

And electric motors, properly built, are very very tough.