- Dec 19, 2008
You can have all of the power in the world off the line, but with little torque you will not get good 60' times. To get the ultimate track times, you want max torque off the line, and max hp once you get going.One has to remember that while the Roadster applies 100% torque from a stop, it does not apply 100% power from a stop and has the disadvantage of only having a fixed gear.
Remembering that power is force (torque) applied over time, one realizes that one needs to apply maximum power (not torque) over that distance to get there fastest.
Then look at a torque/power curve for roadster, one quickly realizes that off the line while the Roadster produces a lot of torque, it doesn't produce more than 100 hp until you're going around 30 mph and that ideally you'd keep the motor spinning around 8,000 RPM to accelerate the fastest.
Don't forget that with a typical car one can also usually "launch" it (unless you've got a crappy slush-box) in the power band.
Put a 2-3 speed transmission in the Roadster and you'd easily produce better acceleration numbers. While an EV's torque curve is much better than an internal combustion engines, that doesn't mean that performance can't be improved by keeping the motor in it's sweet spot.
Gearing does have a lot to do with it, but the roadster definately leaves a lot on the table with the current setup as it's engineered for range/reliability.