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Tesla Roadster

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Re: Tesla Roadster

#341

Post by pwdisswordfish »

ardit33 wrote: post #17

The Tesla roadster specs are insane! No exotic carmaker will be able to match it (taking price as a consideration). (no Ferrari, or Lambo, can get that close. This is Formula 1 acceleration speeds). Plus 620 miles of range, and it is a 4 seater. Expensive as hell, but this is exotic car territory. Base Specs Acceleration 0-60 mph1.9 sec Acceleration 0-100 mph4.2 sec Acceleration 1/4 mile8.8 sec Top SpeedOver 250 mph…

Seriously? I'm 90% sure this will NOT reach Lambo times in Nordschleife. And as a sports car, it will 100% not be fun to drive, weight is everything in a quick small car for fun.

Re: Tesla Roadster

#342

Post by fiblye »

speeq wrote: post #68

Close up video of Tesla Roadster launching from zero: https://twitter.com/DavidHodge/status/931391188065705984

Kind of looks like it's from a game with bad physics. Except it's not.

Re: Tesla Roadster

#343

Post by neya »

InternetOfStuff wrote: post #292
neya wrote: post #223

Earlier quoted context omitted.

10,000 NM of torque. That's INSANE. I drive a car with 400NM torque and that thing scares the sh*t out of me when I accelerate. 10,000 NM? Isn't that something along the lines of a tram or a train (I'm not sure, I'm asking you guys). This is CRAZY. I'm getting one for sure.

Your car has 400Nm at the engine output shaft. After gearing, you'll have the same order of magnitude torque at the wheels as the Tesla. Randomly picked example: Porsche G97/01 (997 Carrera 2 2005-08) First gear total reduction 13.45 (gear 3.91, rack&pinion 3.44) So, ignoring efficiencies, you'd have a first-gear torque of 400Nm * 13.45 = 5380Nm at the wheels. Still "only" half of the Tesla, but not an earth-shatteri…

Thank you, now that makes perfect sense :)

Re: Tesla Roadster

#344

Post by PeterisP »

gsnedders wrote: post #268
cheeze wrote: post #260

Earlier quoted context omitted.

Teslas don't need gears since they use electric motors. So there is literally no time spent shifting gears. See https://www.quora.com/Why-don%E2%80%99t-Tesla-cars-need-a-ge...

The original Veyron could change gears in 8ms, and will, IIRC hit 60 in 2nd. Changing gear isn't going to be a considerable part of the time here.

Wikipedia https://en.wikipedia.org/wiki/Bugatti_Veyron states that the original Veyron gearbox could change gears in 150ms, so it is a considerable part of the time.

Re: Tesla Roadster

#345

Post by averagewall »

Oh no, they're doing what all the other carmakers do and reuse the same name for completely different cars whose only thing in common is to target the same market segment. We'll have to call this the 2020 Roadster.

Re: Tesla Roadster

#346

Post by makomk »

aerovistae wrote: post #319
the_rosentotter wrote: post #294

There has got to be an astroturfing campaign going on here, or the HN crowd is a lot more naive than I thought. Seriously, no one is concerned that Tesla is announcing, not one, but two new products, while they are failing to deliver on all three they are currently producing (in terms of production ramp-up)? What matters more than anything to Tesla is production at scale, but they are busy promising ever more fantast…

> Seriously, no one is concerned that Tesla is announcing, not one, but two new products, while they are failing to deliver on all three they are currently producing (in terms of production ramp-up)? It's almost like.....there's nothing to say about Model 3 right now, where the bulk of their effort is going, because it's just a matter of steadily toiling away ramping up production, just like they said all along . It'…

They're not just announcing the Tesla Roadster here, they're opening up pre-orders for it too, with a substantial up-front deposit of either the entire price of the car or a fifth of it depending on how early in the queue you want to be. While they're having major problems delivering on their big current product they took in a fairly substantial amount of money in reservation fees for.

Re: Tesla Roadster

#347

Post by MarkMc »

cperciva wrote: post #48
ukulele wrote: post #2

0-60 in 1.9 seconds is ABSURD

To be precise, 1.44 g. For comparison, a Falcon 9 v1.1 rocket -- without payload -- at takeoff mass has 1.19 g of thrust.

So your body experiences 1.44 g horizontal plus 1 g vertical, giving total 1.75 g. Is that right?

Re: Tesla Roadster

#348

Post by askvictor »

kirse wrote: post #161
bwang29 wrote: post #19

I'm thinking what this means to gas car makers. Wave 1: "It's all about legacy and prestige, not speed/acceleration". Wave 2: "The track handling isn't all that good, how can drivers take that corner at full power without losing traction". Wave 3: "Alright, we will go electric too".

Gas will always have sound. The growl of an Aston Martin V12 on startup, or a Lexus LFA screaming through a tunnel, or the flat-plane V8 burble from a Mustang GT350. EM cars only have a dull whine the faster they go. Motorheads are secretly all musicians who happen to love driving. The best combination is ultimately both though, hybrid systems are already used quite frequently in everything from LMP1 WEC racers to mo…

Steam engines have a distinctive sound too, one which I quite enjoy when one goes past, despite being too young to have any actual nostalgia. People will get over the sound thing, and ICE cars will be a historical curiosity/enthusiast hobby.

Re: Tesla Roadster

#349

Post by icc97 »

AndrewDucker wrote: post #300
the_rosentotter wrote: post #294

There has got to be an astroturfing campaign going on here, or the HN crowd is a lot more naive than I thought. Seriously, no one is concerned that Tesla is announcing, not one, but two new products, while they are failing to deliver on all three they are currently producing (in terms of production ramp-up)? What matters more than anything to Tesla is production at scale, but they are busy promising ever more fantast…

Tesla seem to be doing ok in Puerto Rico: http://www.independent.co.uk/news/world/americas/tesla-puert... Australia work is 80% complete: http://reneweconomy.com.au/musk-says-tesla-big-battery-now-8... There are definitely issues with the Model 3 - but I'd imagine that the production line for the Semi will ramp up significantly after the Model 3 is working, and will involve an entirely separate team. https://www.gizm…

Elon Musk said it himself with the Model 3:

> Assume the worst [0]

So sure we should be skeptical about the actual deadlines. But they're trying to compete against BMW & Mercedes (plus numerous other brands, but it seems like those two are their main competition). It's not like those are terrible companies, they've produced cars and engineering discipline of the highest quality for nearly a century.

I'd be more worried if there's some major flaw in the car, like if it's got the reliability of an 80s Jaguar (of which the stories about breakdowns in the gizmodo article are the biggest concern). The issues coming out about panel misalignment are bad (but I noted that my VW Golf I'm just buying wasn't perfect either), but not end of the world.

Still though my inner child doesn't care, it still gets very excited when car manufacturers show unrealistic made up cars [1]. But it seems like the Roadster might actually happen and it's nice to see the Roadster getting some love after being the car that started it all.

[0]: https://twitter.com/elonmusk/status/916407361899708416

[1]: https://www.bloomberg.com/news/articles/2017-11-07/lamborghi...

Re: Tesla Roadster

#350

Post by makomk »

kmonsen wrote: post #207
bonestamp2 wrote: post #200

Earlier quoted context omitted.

I wonder if GM (or Tesla) will sell crate batteries the way they sell crate engines? Everyone will be drooling over the next big battery they release the way motor heads drool over crate engines. They'll need a reasonably standard size/configuration to be successful, and they could sell the motor, power management and PCM to go with it.

GM doesn't make batteries, the Bolt is almost a LG car.

GM make batteries in much the same sense that Tesla do - the cells are bought in from LG, but the battery engineering, testing and integration work is done in-house. (Maybe even more so than Tesla's given their explanation for the Model 3 delay.) I believe the motor is simply bought in from LG though.
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