Earlier quoted context omitted.
How is more than one g accelleration possible? There is one g making the friction between the tyre and the road.
but there is four tires!
and 4/4ths of a car
Tesla ‘Easter Egg’ Makes the Fast-Accelerating Model S Even Faster
21–30 of 121 posts
Re: Tesla ‘Easter Egg’ Makes the Fast-Accelerating Model S Even Faster
#22At what battery percentage? Let alone, why? I want range, range, and more range. I could not give a damn about how fast I get to the next stop light or supercharger. Brag when you get 500 miles a charge, even fifty miles more range is more impressive than a tenth of a second off your acceleration "with a full charge"
> I want range, range, and more range. I could not give a damn about how fast I get to the next stop light or supercharger. You're not the target audience for their top-of-the-line P100D. It's aimed at people who would otherwise buy Bugatti Veyrons, Ferraris, etc., and range probably doesn't even come up in their decision making process. The Veyron has a range of 50 miles at top speed, for example.
And that's about the range of the tires at top speed as well.
Re: Tesla ‘Easter Egg’ Makes the Fast-Accelerating Model S Even Faster
#23Re: Tesla ‘Easter Egg’ Makes the Fast-Accelerating Model S Even Faster
#24Earlier quoted context omitted.
The cars also gets pressed down by aerodynamics.
But downforce isn't appreciable until over 50mph (80kph), short of having stupidly oversized wings (which would drastically slow your acceleration) or active downforce (fans etc).
This is actually why a lot of expensive sports cars have 0-60 times of 2.9 seconds. Unless you design specifically for it, it's difficult to generate much downforce at low speeds.
Related: if you've ever wondered why some drag cars (e.g. Funny cars) have short exhaust pipes angled up and back, now you know.
Re: Tesla ‘Easter Egg’ Makes the Fast-Accelerating Model S Even Faster
#25Is Tesla so fast compared to the price because is an electric car or this is totally unrelated and was just designed to have such an acceleration, without help from the fact it's an electric car? Thanks.
EDIT: Thank you for the replies!
Re: Tesla ‘Easter Egg’ Makes the Fast-Accelerating Model S Even Faster
#26Is Tesla so fast compared to the price because is an electric car or this is totally unrelated and was just designed to have such an acceleration, without help from the fact it's an electric car? Thanks. EDIT: Thank you for the replies!
To my knowledge the essence of an electric engine is that is has max traction almost independent of the rpm. Where a petrol engine has an optimal rpm (4000 for instance) where it provides most power, the electric car does not. Consequence is that a petrol car needs a gearbox to keep the engine around this optimal RPM (and thus most power) while the electric engine does not need one - it accelerates and keeps on accelerating...
So the Tesla is so fast because it is electric, not because it has other features.
Re: Tesla ‘Easter Egg’ Makes the Fast-Accelerating Model S Even Faster
#27Is Tesla so fast compared to the price because is an electric car or this is totally unrelated and was just designed to have such an acceleration, without help from the fact it's an electric car? Thanks. EDIT: Thank you for the replies!
To my knowledge the essence of an electric engine is that is has max traction almost independent of the rpm. Where a petrol engine has an optimal rpm (4000 for instance) where it provides most power, the electric car does not. Consequence is that a petrol car needs a gearbox to keep the engine around this optimal RPM (and thus most power) while the electric engine does not need one - it accelerates and keeps on accel…
Max torque, not traction.
That, and being able to do all wheel drive efficiently and with less weight penalty and with less risk to drivetrain parts helps the quick acceleration.
But you still have to make tons of power and not be too heavy of course.
Re: Tesla ‘Easter Egg’ Makes the Fast-Accelerating Model S Even Faster
#28Earlier quoted context omitted.
At 2.6-sh second mark your car accelerates with more than 9.8m/s^2 to get to 60. But even lower accelerations will glue you to the seat because gravity acceleration affects every part of your body. Where as the car grabs you by the butt and yanks you forward. So - I think he has probably some vague idea of Newtonian physics but just didn't manage to produce coherent sentence.
How is more than one g accelleration possible? There is one g making the friction between the tyre and the road.
Cars can do more than 1G even without downforce. Sports car street tires commonly ~1.2g, race tires commonly ~1.5g+
High school friction is wrong.
Source: various of my cars (in the past, I just have lame hybrids now) and a g meter
Re: Tesla ‘Easter Egg’ Makes the Fast-Accelerating Model S Even Faster
#29At what battery percentage? Let alone, why? I want range, range, and more range. I could not give a damn about how fast I get to the next stop light or supercharger. Brag when you get 500 miles a charge, even fifty miles more range is more impressive than a tenth of a second off your acceleration "with a full charge"
You know Tesla has non-performance models too?
Re: Tesla ‘Easter Egg’ Makes the Fast-Accelerating Model S Even Faster
#30At what battery percentage? Let alone, why? I want range, range, and more range. I could not give a damn about how fast I get to the next stop light or supercharger. Brag when you get 500 miles a charge, even fifty miles more range is more impressive than a tenth of a second off your acceleration "with a full charge"
> I want range, range, and more range. I could not give a damn about how fast I get to the next stop light or supercharger. You're not the target audience for their top-of-the-line P100D. It's aimed at people who would otherwise buy Bugatti Veyrons, Ferraris, etc., and range probably doesn't even come up in their decision making process. The Veyron has a range of 50 miles at top speed, for example.
"aimed at people who would otherwise buy Bugatti Veyrons, Ferraris"
More like Porsche 911 Turbo, Mercedes SLS, Audi R8 buyers.