Re:Tesla Roadster
by danappelxx on Friday November 17, 2017 @01:07AM
(#15719411)
Sorry, 10,000 nm of torque? This can't be real.
edit: misunderstood
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Re:Tesla Roadster
by oppositelock on Friday November 17, 2017 @01:14AM
(#15719451)
That's wheel torque, not engine torque. Existing high power cars, like the Hellcat, exceed that number, at least in first gear. Hellcat makes 10875 Nm (8021 ft-lb). That's 650 engine torque at peak, * 4.71:1 first gear ratio * 2.62:1 rear axle ratio.
Of course, electric engines have much flatter torque curve, so they'll be at torque peak all the time until they exceed pack wattage limts.
Re:Tesla Roadster
by danappelxx on Friday November 17, 2017 @01:16AM
(#15719466)
Ahh, that makes more sense, then. Thanks for clarifying!
Re:Tesla Roadster
by TadasPaplauskas on Friday November 17, 2017 @01:19AM
(#15719488)
Wheel torque is not the same thing as engine torque. I'm pretty sure the confusion is intentional, since it's the first time I see wheel torque advertised for any car.
I always wondered why engine torque was put on the spec sheet. Since geering can turn that engine torque into any number you want at the wheels. Wheel torque seems much more relevant.
Re:Tesla Roadster
by travisjungroth on Friday November 17, 2017 @02:49AM
(#15719983)
Wheel torque isn’t really that important since you don’t know what speed it’s being delivered at. The only thing that really matters is horsepower since you can gear for torque and you can assume the engineers did a decent job with the transmission.
That being said, peak torque is a good indicator of low rpm horsepower on internal combustion engines. Low rpm horsepower is good for sustainable work (like towing) or street power.