Re:The Porsche Taycan's Two-Speed Gearbox
by coribuci on Saturday September 07, 2019 @04:53AM
(#20902635)
Higher voltage means less current for the same power. Since the power dissipated on the battery is proportional with the current you want to draw less current. What a lot of people do not understand is that the lack of a gearbox in an electric car is a big problem. When the motor is running suboptimally the excess energy taken from the battery will be transformed in heat.
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Re:The Porsche Taycan's Two-Speed Gearbox
by mcot2 on Saturday September 07, 2019 @08:57AM
(#20903487)
It depends what speeds make the motor run sub-optimally for a particular vehicle. The range 0-80 MPH is sufficient for almost all normal driving. If you want to make an efficient track car that can operate at high speeds optimally by all means introduce a gearbox. Its going to add more weight, complexity and maintenance though. I don’t think thats the target for any of Tesla’s cars besides the 2020 roadster though.