Tesla Model S: 0-60 In 4.5 Seconds
thecarchik writes "We already know a lot about the all-electric 2012 Tesla Model S sedan — but at a press event ahead of tonight's exclusive VIP event at the former Toyota NUMMI facility in Fremont, California, Tesla CEO Elon Musk announced Tesla was making a faster Model S for those with a sporty side. Cutting the brisk 0-60 time of the standard Model S from 5.6 second to under 4.5 seconds, the sportier version features the same 85 kilowatt-hour, 300 miles-per-charge battery pack found in the 2012 Model S Signature series. 'That's quicker than a [Porsche] 911 [Carrera],' joked Musk. 'Not bad for an electric luxury sedan.' But if you thought 300 miles was the maximum range a Tesla Model S could do, you'd be wrong."
Summary cut off right where it got interesting, announcing 320 mile range. The Tesla is of course useless because a 320 mile range means I can only drive for 10 continuous hours without a brake in 32 MPH stop and go traffic and I love having a five hour commute each direction. In fact, everyone knows that not only does the average american watch TV 8 hours per day, they also commute 10 hours per day.
"Science flies us to the moon. Religion flies us into buildings." - Victor Stenger
The Ford T cost $240 in 1925. That's $3000 in today's money. If you want a revolution, what you want is low prices.
I remember all the claims Tesla motors made about the original sports car. Top Gear UK tested it and most of the performance claims turned out ot be less than 1/2. It was utter junk. I would like to see Top Gear (who I trust) test this new Tesla (who I no longer trust).
* Carthago Delenda Est *
How long will the battery last? It's all great and exciting, but if one has to replace a ridiculously expensive (10,000$+) battery every 5-6 years, this is a nonstarter.
60 miles per hour is 88 feet per second. Given constant acceleration, we have 88 feet per second divided by 4.5 seconds, which yields about 19.6 feet per second squared. Using the formula d=0.5*a*t^2, and taking 1320 feet as a quarter mile, we get 1320=0.5*19.6*t^2. Solving for t gives us about 11.6 seconds.
Where you've assumed constant acceleration throughout? And at the end of that time the car would be going 155mph - I highly doubt that acceleration is anything like constant from 0-60 and it certainly won't be at higher velocities, as drag is proportion at v^2. If it were, you could have one of these babies hit light speed in about a year and a half...
Acceleration wouldn't be constant, air resistance varies with the square of speed. 11.6 second cars generally have sub 4 second 0-60 times. My car does 0-60 in 4.6s, but it's 1/4 mile time is 12.9 seconds at 112MPH, I'd expect the Model S to be +/- 0.5 seconds of that.
Air resistance increases with the square of the velocity. You can't assume constant acceleration.
Air resistance plays a relatively small role on acceleration times. The faster you accelerate, the smaller the role.
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This vehicle is being designed for freeway driving..... which implies not just 0-60 in a quick start but sustained driving at 70+ mph for an extended period of time. Obviously freeway driving will suck juice out of the batteries faster than driving at a slower speed, but it isn't as bad as it seems.
I've heard of more than a few people who have driven from the SF Bay area to Lake Tahoe and back with a Tesla Roadster (presumably recharging overnight in Nevada). Figure that out for yourself what that implies in terms of performance and range. Neither the Roadster nor the "Model S" are golf carts in terms of performance.
As for cost.... look it up yourself, Google can be your friend.
Ah, the dangers of extrapolation. Thank you.
This vehicle is being designed for freeway driving.....
Why would you want an electric car for freeway driving? Electric cars only make any kind of sense in situations where you don't have to sit and wait for them to recharge (e.g. a daily commute where you can recharge overnight).
That's nothing! It'd run its 320 mile range in sqrt(320 miles * 2 / (19.6 ft/s^2)) = 6m 55s.
Too bad the braking will be a bit complicated at 6.92 minutes * 19.6 ft/s^2 = 5,548 mph.
This post contains no rudeness or derision of any kind. All arguments are friendly. Terms and exclusions may apply.
It's worth pointing out that they've chosen the most favourable acceleration statistic to quote. Electric cars are extremely quick at lower speeds, but their acceleration tails off more quickly than petrol-engined vehicles. Over the quarter-mile (standard dragstrip distance) or around a racetrack, I wouldn't expect the Model S to get anywhere near an M5.
However, for a luxury sedan, the Tesla will be more than fast enough, will have that instant throttle response that makes overtaking a breeze, and be eerily quiet. If I could afford one, I'd buy one.
Any sufficiently advanced technology is indistinguishable from a rigged demo
--Andy Finkel (J. Klass?)
I'm no expert. Based on Wikipedia, and verified by external sites, I've compiled the following information for comparison:
Normal high end cars get a zero to sixty of a little under 6 seconds. Expensive exotic cars get 3-4 seconds. The worlds fastest street legal car (the Bugatti Veyron Super Sport) does 0-60 in 2.46 seconds (that car costs the equivalent of over 2.5 million US dollars!).
The Formula One race cars (which trade some safety of street legal cars for extra speed), can get 0-60 time of around 2.3 seconds.
Stylish sheet to fix many problems in Slashdot's D3: https://gist.github.com/801524
Cheaper cars also have good acceleration. Caterham c7 for instance. Electric motors are known for astoundingly quick acceleration tho as they go from 0 to maximum torque instantly. An internal combustion engine has to rev up to reach peak hp and torque.
This is the future of American manufacturing. They can make anything. It's almost 100% vertically integrated, which means everything from plastics and metals to batteries, electronics, motors and component assembly is done here, with flexible multi-purpose robots. Every car can be different, with no retooling, because the robots can do anything. It's just software.
>>On the standard Tesla charger, a *full* charge (not a daily commute charge, but a "I just drove 200 miles" charge) takes 3 1/2 hours.
So you have to spend between 2x and 4x as much time driving the car charging it? That's not a good selling point.
>>the DOE has already extensively studied this (as have many, many other groups). In every case, the conclusion is that even on our current grid, EVs are notably cleaner than gasoline cars.
I'd like to see a citation for this. But in lieu of one, let's run some numbers and figure it out for ourselves.
The Tesla holds 53 kWh on a full charge and gets 300 miles.
Therefore, a charge here in California will run you between $5 and $26 (depending how much energy you use a month - http://www.pge.com/tariffs/ERS.SHTML) If you're charging your car off the grid, you'll be in the $26/charge tier, but you'll probably be smart and running it off-peak, so we'll call it $13 or so. So you get about 23 miles per dollar.
A gallon of gas has 36.6 (call it 37) kWh in it. It's $3.90 a gallon right now in California. A 510 horsepower Jaguar XKR with the same 0 to 60 time gets around 20mpg, or 5 miles per dollar.
So the Tesla is cheaper as long as you charge it at night, and compare it against a gas guzzler. =)
In terms of CO2 output per kWh -
I'm using the data from here: http://www.stewartmarion.com/carbon-footprint/html/carbon-footprint-kilowatt-hour.html
Their data is wrong for PG&E - PG&E draws a lot of power from NG, but it lists it at 0%, which is obviously in error (Actual mix is 35% NG - http://www.pge.com/myhome/edusafety/systemworks/electric/energymix/). So we'll just use the national average instead, which is about 1 pound of CO2 per kWh.
Using the EPA and IPCC estimates of CO2 per gallon of gas, we see it's about 20 pounds per gallon (http://www.epa.gov/oms/climate/420f05001.htm). The BlueSkyModel.org website estimates it at 14 pounds per gallon, but we'll take the word of the EPA on this one, since they fucked up pretty badly on PG&E's numbers above.
The Tesla generates 53 pounds of CO2 per 300 miles, or about 6 miles per pound of CO2 generated.
The Jaguar XKR drives 20 miles on a gallon of gas, so it gets a nice even 1 mile per pound of CO2 generated.
Conclusion: If you are contrasting the Tesla against a similar price and performance Jaguar, then it's about 6x better at CO2 emissions than the Jag, and costs about 4x less to "fill up". The Jag will have a much longer range, can "fill up" faster, and looks a bit more manly, but on these two stats alone, the Tesla has the advantage.
Corner like a pig? Even on the "eco tires" it will out-corner 99% of the cars out there. It's still just an Elise that weighs a little more than an S2000.
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The Formula One race cars (which trade some safety of street legal cars for extra speed)
They trade no safety. F1 cars are the world's safest cars. They trade affordability - ALL of it.
"When information is power, privacy is freedom" - Jah-Wren Ryel
But we're already at peak lithium....
If America is to compete with other country sponsored industries - i.e. China massively funding most of their new technologies, then it's not unreasonable.
All new technologies are expensive - remember CD players? went for $1,000 initially.
Electricity is MUCH cheaper than gas - it would be nice to stop our hemorrhaging of billions of dollars to the middle east, and suck the power out of those countries., making them irrelevant.
Green energy is the only way to go, for environmental reasons, as well as political, and economic.
..........FULL STOP.
and it says $850 in 1909 = $20,363 in 2010 dollars.
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effort to make electric cool by giving good performance (actually for acceleration usually superior performance) to gas powered cars. That said I don't think electric is all that green in the US or a lot of other cars. Replace gas burned in a car for coal burned in a plant + all the inefficiencies in the power distribution system + all the really crappy components in the batteries. If governments would get of the asses and actually generate electricity from green sources than electric would be green but they do it isn't a clear win in my mind.
The technology to produce cheap EVs is just becoming available. Nissan LEAF borders on being practical, but it uses cutting-edge battery and power electric technology. 10 years ago it would have been impossible (there were electric RAV4s but with much worse params).
Can't wait for Captain Slow to review this one. Should be right up his alley!
There are just so many fallacies in the parent post that I'm actually at a loss for what to say.
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At this year's Frankfurt Motor Show this 1088HP electric claiming 0-100km/h in 2.8 secs with a 600 km range was unveiled ... http://www.inautonews.com/frankfurt-rimac-concept-one-1088-hp-ev-supercar-revealed
I remember reading in some car magazine (can't remember) last year about new electric cars. One of the reviews was talking about a car that had 4 electric motors, 1 each directly driving 1 wheel. The part that impressed me was that the builders had to place hardwire limiters on the motors because at full torque they would literally rip the carbon body apart.
Anybody have an idea what car that old article was talking about? I was thinking maybe is was a previous version Tesla due to its acceleration, but I couldn't find any info about the drive train in TFA.
Thanks for any info.
Vote monkeys into Congress. They are cheaper and more trustworthy.
Id still rather roll blackcurrent down the strip, id get to the other side sooner.
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60 km/h isn't that fast...
Handles like a pig compared to what? Supercars that cost more than twice as much?
And yeah it costs 3 times as much as an Elise because it's electric. That means it never needs gas, requires little to no engine maintenance and accelerates like a sportbike. Can't afford it? Don't buy it. Need to drive insane distances? Don't buy it.
It's like you're butthurt by the very fact that the car exists.
"When information is power, privacy is freedom" - Jah-Wren Ryel
Simply not true. The main factor that affects your acceleration time is your power to mass ratio. Air resistance is a very small proportion of it. Air resistance is the primary method of energy consumption when *maintaining* speed.
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Frame, engine, seats, body, windows. That's mostly it, no ABS, power brakes, power steering, power windows, power top, stereo, spare tire, A/C, bumpers, carpet, glove box, or even a cup holder.
Interesting universe you live in.
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You can say that, but you'd be wrong. By definition, the EU is already working with multiple countries to homogenize regulations. There's no reason the US couldn't get as involved in that area as they are with copyright law. The US has specifically chosen to not follow existing international standards, and instead create substantially similar (in function) regulations that are incompatible with all others out there. The US has managed to come up with a few sensible regulations first that weren't followed, but those are few and far between.
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it happened to lightning mcqueen....
It's the one with the laws of physics. You're welcome to join it at any time.
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