Tesla push Model S P90DL performance to 0 - 60 2.65 seconds - Polidicks

[QUOTE=Zephyrs;50912172]What the actual fuck is that graph?[/QUOTE] Power coming from a supercharger at each percentage of State of Charge.

Yeah, but it makes zero sense. Why is the new performance lower initially, and why is there a spike? It's wildly out of line with the rest of the information.

[QUOTE=Zephyrs;50912339]Yeah, but it makes zero sense. Why is the new performance lower initially, and why is there a spike? It's wildly out of line with the rest of the information.[/QUOTE] My guess is smart circuitry... battery degradation loss can be compensated through increasing charge voltages and charging in bursts, but currently li-ion batteries dont do this because it actually increases degradation early on. I guess this could also apply to decharging. My guess is that they at some point flip a switch to an alternative charging/decharging scheme to squeeze the battery for all its got.

[QUOTE=LordCrypto;50910726]emergency passing? crazy shit happening suddenly behind you and you need acceleration to get away?[/QUOTE] Its almost never safe to just acellerate to 60 in 2 secdonds because if shit behind you. This scenario has an incredibly slim chance of happening. You complain about the guy throwing what-ifs about, but I think you're throwing ridiculous ones around too.

[QUOTE=Zephyrs;50910447] Cruising at the current top speed does not consume that much power. It's an RPM limit more than anything else.[/QUOTE] [QUOTE=Sobek-;50910735]Would it really though? Shouldn't it get more economical (to a limit) as the speed increases? Because at high speeds the engine is only required to engage a small amount of power to essentially 'keep the wheels turning' - mass and inertia and such are doing most of the work for you... [/QUOTE] No, as you double your speed required you quadruple the required power (because Ek = ½mv², and the same also applies to your stopping distance). Combine that with the fact that electric motors have a peak efficiency, which usually is around ~75%, for a Model S peak efficiency is around 20-25mph. For a modern turbocharged diesel engine that's around 55-60mph. This is why I personally think we need more cars like the Nissan Leaf and VW e-up! driving around in cities where local pollution is a bigger issue than on highways and where electric cars are a lot better, in stop and go traffic.

[QUOTE=Sobek-;50910735]Would it really though? Shouldn't it get more economical (to a limit) as the speed increases? Because at high speeds the engine is only required to engage a small amount of power to essentially 'keep the wheels turning' - mass and inertia and such are doing most of the work for you... That being said, I have no understanding of how the whole electric motor components work so maybe it's completely different. I'd be very curious to see! [editline]now[/editline] Oops never mind, basically answered a couple of posts up. Very neat.[/QUOTE] You're also forgetting about one huge factor: air resistance. Now this doesn't actually matter so much because the limiting factor in this case is, as mentioned above, the inefficiency of electric motors at those speeds, but as you go faster, air resistance becomes more and more of an issue. There's a reason why the Bugatti Veyron needed 1,000 horsepower to reach 253 MPH while the McLaren F1 managed 240 MPH with 627.

I would want of these so bad, but i JUST bought my first car which i could barely afford.. a $9,000 Fiesta. If Tesla made a cheaper hatchback that would be ideal for me. Maybe one day.

[QUOTE=Goz3rr;50913450]No, as you double your speed required you quadruple the required power (because Ek = ½mv², and the same also applies to your stopping distance). Combine that with the fact that electric motors have a peak efficiency, which usually is around ~75%, for a Model S peak efficiency is around 20-25mph.[/QUOTE] The car can easily sustain 250kw of power output for more than a couple of minutes at a time. Old information, but [url=https://teslamotorsclub.com/tmc/threads/discharging-at-high-speed-100-mph.32873/]this guy average about 100mph and consumed sub 65kw at those speeds[/url]. Even with the quadratic growth of energy requirements, you are still looking at being able to easily cruise at 200 for several minutes. The cars easily have the raw power to hit 250mph/400kph, but could obviously cruise at 200mph/320kph for longer. They spike over 500kw on launches after as it is. They couldn't sustain those 200+kw outputs forever, and they'd need less aggressive gearing due to rpm limitations, but there is more than enough power in the system to hit those speeds. The cars just aren't mechanically built for top end speeds, because transmissions don't handle the torque well, and low end kick is more useful than having a 200+mph top speed.

[QUOTE=Zephyrs;50912339]Yeah, but it makes zero sense. Why is the new performance lower initially, and why is there a spike? It's wildly out of line with the rest of the information.[/QUOTE] It's weird yeah but most owners are reporting something similar. It's probably throttled by software to keep the temperatures in an ideal range? Which is probably why it drops off significantly later on and then comes back up again.

Would it be possible to make an electric motor that could put out top speeds that would be record setting? Say, 270mph. Talking about a car optimized for max speed. Acceleration, comfort, and battery drain are after thoughts.

[QUOTE=OvB;50915032]Would it be possible to make an electric motor that could put out top speeds that would be record setting? Say, 270mph. Talking about a car optimized for max speed. Acceleration, comfort, and battery drain are after thoughts.[/QUOTE] gear it

[QUOTE=OvB;50915032]Would it be possible to make an electric motor that could put out top speeds that would be record setting? Say, 270mph. Talking about a car optimized for max speed. Acceleration, comfort, and battery drain are after thoughts.[/QUOTE] Gears, and you could easily shave a thousand pounds off the interior. The initial launch would be sluggish because of the worse ratios, and you'd want to be gentle getting up to 150 to prevent the pack from overheating on top of that. Really rough math based off peak power output and known usage at lower speeds puts your top speed somewhere close to 300. Factor in some other miscellaneous limitations like wheels rattling, and you'd comfortably be able to hit 250. The cars can dump ridiculous amounts of power out, it's just not sustainable, and the current configuration is for torque over velocity. As for what if you weren't using the tesla platform and building from scratch for speed and nothing else? It wouldn't be effortless, but a massive enough power dump would easily put you into the 300mph territory. Things start getting a bit weird when you reach those speeds. Past that is definitely possible. Dragsters can get into the 330 range, and this arguably lets you dump even more power.

On the subject of EV gearing, IIRC Musk/Tesla has already stated that they're working on it, and that it'll probably show up for the first time in the Roadster 2.

Holy fuck. That's impressive.

They tried gearing first off, but the motors always tore them up. Which is why the current vehicles don't have them. It would be nice to see them find a solution around that issue while also being able to keep the insane acceleration that the EV's are known for.

[QUOTE=OvB;50916003]They tried gearing first off, but the motors always tore them up. Which is why the current vehicles don't have them. It would be nice to see them find a solution around that issue while also being able to keep the insane acceleration that the EV's are known for.[/QUOTE] theres a really easy solution and I wish they would take it for future models, just stop the desire to cut down the 0-60 times and focus on something else. it's a nice figure for your top trumps game but thats about it. Maybe have it quick in a car like the roadster, people arent exactly complaining about their 4.5 second to 60 time in their BMW F10 M5s [editline]19th August 2016[/editline] something like 4.5 seconds is still extremely quick for a car like that, sub 3 is just why

Can we talk about how that thing pulled like 1.5g in acceleration

[QUOTE=urbanmonkey;50916523]Can we talk about how that thing pulled like 1.5g in acceleration[/QUOTE] It doesn't pull nearly that hard. Nothing without wings or alternative propulsion can. It's about 1G for a fraction of a second off the line, and some of that is from the car shifting position as it squats under the torque load.

[QUOTE=Zephyrs;50916576]It doesn't pull nearly that hard. Nothing without wings or alternative propulsion can. It's about 1G for a fraction of a second off the line, and some of that is from the car shifting position as it squats under the torque load.[/QUOTE] Did you look at that graph at the end of the video? If it reaches 24mph in 1 second, then that's an acceleration of 10.729 meters per second. That's an average of 1.09G's in the first second of acceleration. During the 2nd second it gains another 21.5mph, that's 9.611m/s == 0.98G's. It pulls more than one G for at least a second and a half, a fraction of a second isn't even close.

[QUOTE=OvB;50915032]Would it be possible to make an electric motor that could put out top speeds that would be record setting? Say, 270mph. Talking about a car optimized for max speed. Acceleration, comfort, and battery drain are after thoughts.[/QUOTE] i mean if youre going for raw speed theres been custom cars that can dump a kilowatt into the motor on launch, the motor is not the limiting factor unlike ICEs which are harder to squeeze more power out of

Here's some new 1/4 mile drag races with the improved speed: [video=youtube;JLs5CcvsjNc]https://www.youtube.com/watch?v=JLs5CcvsjNc[/video] The Z06 just says fuck it and gives up :v:

Now if only a Tesla wasn't $120,000 AUD.

[QUOTE=jjjohan;50923339]Now if only a Tesla wasn't $120,000 AUD.[/QUOTE] Has the more consumer friendly model not reached there yet? I thought the most recent release was a Tesla in the range of 35k-50K USD depending on tax breaks and features.

[QUOTE=PowerUp;50926406]Has the more consumer friendly model not reached there yet? I thought the most recent release was a Tesla in the range of 35k-50K USD depending on tax breaks and features.[/QUOTE] It hasn't reached here yet either

[QUOTE=Apache249;50926463]It hasn't reached here yet either[/QUOTE] Ahh, deliveries supposedly start late 2017 for the Telsa 3 model at 35K USD before incentives or additional features. But you can reserve one now for $1,000 USD :weeb: [URL="https://www.tesla.com/model3"] https://www.tesla.com/model3[/URL]