GUYS GUYS GUYS!! when comparing the Tesla with other cars, it DOESNT make 4000ft-lbs of torque compared to the viper, Camaro, etc, 400ft-lbs of torque.......
That dyno is a little misleading..... yes, the RPM is the rear tires.................. but more importantly, the torque is at the rear tires too!!!!! that Viper that posted a dyno would have near 4000ft-lbs as well at the rear tires.. BUT, its using the spark to determine engine RPM and rate of change of KE to determin HP and then calculates engine hp. NOT , road touching Torque.
Go back and do the math ................... The tesla makes 430rwhp, the torque will be LOT less than 4000ft-lbs.. remember, there is a 9.7:1 gear box in the Tesla too.
the reason for the confusion is simple.... the dyno had to use wheel MPH and vs it to HP on the Y axis. they took the MPH and made it RPM, but of the rear wheels, then the torque value becomes at the rear wheels and the RPM is correct, no need to multiply by 9.7. but, if you want to equate the rear wheel torque to motor torque,(as measured at the rear wheels), you divide the torque by 9.7.
make sense???????
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your right, it doesn't ..... divide the 4k torque by the gear ratio, of 9.7 and you get your torque number.
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this chart needs to be updated..... the tesla has the same torque as the other cars.... this figure was the rear wheel torque as measured at the rear tires, not the motor torque. divide that number by the gear ratio of 9.7 the number is more like 440ft-lbs