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Tesla Roadster

tesla.com

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Re: Tesla Roadster

#321

Post by mnw21cam »

puranjay wrote: post #282
nepotism2018 wrote: post #269

I'm hoping they actually tested that 250mph+...I'm no expert but that car looks bit too light and short to do that speed...can't see how it will stick to the road...unlessssss...they want it to fly away :)

I'm no engineer, but if you generate enough lift with some add-on wings, will this thing go airborn?

Mostly, you want to generate a load of lift downwards to keep the thing attached to the ground.

But to answer your question, if you define "enough" as "enough to make it go airborne", then yes. You would then have to be very careful to make sure it is actually stable in the air, or the results could be very non-pretty. And then you also have the problem of keeping it going fast in the air, when previously your only forwards force was provided by the wheel contact with the ground.

Re: Tesla Roadster

#322

Post by simonh »

baron816 wrote: post #35
Animats wrote: post #23

Does this mean that Tesla is pivoting from their attempt to produce a medium-priced car in quantity and going back to hand-building high-end cars? Tesla is good at high-end, low volume products. But the Model 3 production fiasco shows they don't know how to do what Detroit and Wolfsburg and Toyota City do. This is in a way a step backwards. Tesla is going back to targeting the 1%. There are lots of little supercar co…

I would have to guess that they didn't decide to make a Roadster in the last month or two.

Next you'll be telling me Apple didn't decide on the final hardware design of the iPhone X in August. Pshaw!

Re: Tesla Roadster

#323

Post by dogma1138 »

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…

Yes tho the Maclaren does comes closer as far as spec goes for about the same price (720s is £208,000 in the UK). The top speed would be the interesting part how long can it actually sustain it.

Re: Tesla Roadster

#324

Post by sjwright »

macns wrote: post #305

I'd like to see this kind of battery tech on a lowest-end, lowest-cost mass production car with a 2-3k mile range on a single overnight charge. For my usage in the city, this would mean I'd charge every other week. How far are we from such a feat I wonder, and, can't help but speculate as to why we're not.

Because nobody wants a car that doesn't have enough range to drive to the nearest hospital?

Re: Tesla Roadster

#325

Post by simonbarker87 »

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…

Hitting production targets isn't enough to keep wall street happy with Tesla though, to keep raising money and servicing the debt that they have, he needs to keep creating value inflection points to stoke the hype and keep the money coming in.

I agree that the main concern should be delivering cars but production delays are solvable while he is still raising money. As soon as he takes his foot off the pedal then their ability to raise money will be much harder than it is while he is announcing new stuff and increasing their risk of going under.

Worst case scenario with his current strategy: they run out of money and an acquirer buys them for the cost of their debt and gets a company with a fully fleshed out product roadmap and some solvable production issues (and no need to solve those issues quickly).

Drop the new product roadmap and focus on production: the going under acquisition is less attractive as they would be acquiring a company with a limited product roadmap and a load of production issues.

He is showing that the future is going to be so amazing that it is worth pouring money into Tesla.

Re: Tesla Roadster

#326

Post by jpitz »

Jdam wrote: post #67
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…

> No exotic carmaker will be able to match it. Did you fact check that? Actually, Bugatti is pretty close and partially outperforms, although at a way higher price point. https://en.wikipedia.org/wiki/Bugatti_Chiron

The Chiron is an order of magnitude more expensive, and still fails to be quicker.

Re: Tesla Roadster

#327

Post by stevoo »

thinkloop wrote: post #250
usrusr wrote: post #242

Earlier quoted context omitted.

Very unlikely. With power you weight beyond useful (this has basically been "solved" since the day someone built a cat around a ww2 military aircraft piston engine), acceleration is determined by aerodynamics (drag and downpressure), tires and the time spent shifting gears . It's pretty evident where Tesla has the advantage.

Shifting gears? Why does it have an advantage?

The basic idea is that it is wasting time. But this is no longer a factor as the gear change is instantaneous with Automatic GearBox.

Electric cars do not have a gearbox and just have one rotor. This does place them in a disadvantage when starting though as there acceleration is affected. Formula E cars, have started using a 3 gearbox for their cars in order to have a faster start.

So it is possible that the Roadster does have a gearbox.

Re: Tesla Roadster

#330

Post by larkeith »

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…

I would suggest the opposite; This type of cynicism over Tesla and Musk's other companies seems ever-increasingly popular and widespread, despite relatively few failures and setbacks - which are outweighed by the numerous earlier successes showing both Tesla's and Musk's ability to deliver on far more difficult challenges.
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