AGR

When the manufacturer of electric car touts his car as being comparable to established supercars. Its only normal that the European press will put an electric car in a top speed sitiation, as well as high speed acceleration.

The Roadster is a good 0 to 60 street fighter and starts to shut down at high speed. Not really comparable to the supercars that were used for strictly acceleration comparisons.

As a quick burst of acceleration and speed street fighter the Roadster is hard to beat.

doug

Using 421 amps at 105 mph. Is that a fault light on?

doug

AGR

Cool photos!!!

It would make sense that the fault light is on, the car was backed down to 105mph and 12,000 RPM from running flat out. Not much battery left...did it go into limp home mode?

WarpedOne

Nice!

At 105 mph we can safely assume the motor is getting almost full voltage - 375V - translating into 150kW of power. I'd guess at the moment that picture was taken, he was flooring it. The motor is said to be 80% efficient under heavy load, meaning 120kW is going into the road and 30kW into heat.

Yes, fault light is on. Peak power is showing its teeths - inadequate cooling for constant power at such high levels. Removing 30kW of heat with air only from such a small and enclosed space is very hard bordering on imposible.

Has anyone seen anything on the methods of cooling large locomotive electric motors? It would be interesting to see how they keep their rotors from melting.

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