Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Tesla Cybertruck Pricing and Specs

tesla.com

Post reply on HN
Print view View original

741–750 of 1001 posts

Re: Tesla Cybertruck Pricing and Specs

#741

Post by Mountain_Skies »

throwitaway222 wrote: post #693
tgsovlerkhgsel wrote: post #676

Earlier quoted context omitted.

No, they didn't. From the details page: "We've assumed a fuel economy of 20.0 miles per gallon for a comparable gasoline powered truck. We've also assumed the national average of $0.16 per kilowatt-hour for residential electricity (assumed for 100% of charging) and $3.30 per gallon for gasoline over the next three years."

And in CA, it's $0.30 per KWH, so extremely misleading if you are there - which most of the purchases will be at. Also in CA that price is going up 5% per year.

And in Georgia you can get EV charging at home for as low as 1.7 cents per KWH. Unless they're going to let you enter your zip code and use a national power company rate database along with local gasoline prices, using the national averages seems reasonable.

Re: Tesla Cybertruck Pricing and Specs

#742

Post by kube-system »

Yodel0914 wrote: post #593
HeyLaughingBoy wrote: post #545

Earlier quoted context omitted.

> Drive by wire kind of scares me Physical linkages break too.

Yeah, but not from a bad firmware update

But firmware doesn't rust and snap or burst, like I've experienced on other vehicles.

Cutting corners is cutting corners. Build cheap firmware or use materials with poor corrosion resistance and you get problems.

Re: Tesla Cybertruck Pricing and Specs

#743

Post by liminalsunset »

arcticbull wrote: post #736
liminalsunset wrote: post #96

Seems like there's been relatively less attention on the 48V/800V architecture and the Ethernet comms/steer by wire setup, but I think those are what make this particular vehicle quite interesting. Up until recently I think 48V power electronics have been fairly rare outside of telecom/other high cost situations, but I suppose one major difference is that at 48V, transformer-based DC-DC conversion is usually a better…

> ... but I suppose one major difference is that at 48V, transformer-based DC-DC conversion is usually a better choice for digital electronics compared with a simple buck, which historically seems to be a significant jump in cost and faff to design. There's no such thing as 'simple' transformer-based DC-DC conversion. If you want to use just a transformer, you're looking at AC. If you then want to convert it to DC af…

> There's no such thing as 'simple' transformer-based DC-DC conversion

Pretty much all DC-DC converters nowadays are switching - and those chopping - and - rectifying steps you mention would be standard for any DC-DC converter whether or not it uses a transformer. In this particular case, a transformer is necessary in addition to those components, as opposed to a simple fixed inductor.

> EPR is 48V

Yes, I got confused with the maximum rating on the most popular EPR capable tester (Power-Z KM003)

> Switching regulators are a pretty well known quantity now

I'd agree with this, insofar as they're very common and we know how to design them effectively. With that said, I think it can be observed that topologies used with higher voltages generally do come with increased cost and complexity. First of all, the transformer is going to be a custom part, as opposed to something with jelly bean substitutes like inductors. Second of all, the kinds of components typically used with higher voltages like 48V are less integrated than ones for lower voltages, likely due to the kind of process technology you need to use to handle it. It's possible to get "smart" drive chips for applications like Intel processor VRMs that integrate all of the switching, gate drive, and control logic, but with higher voltage you typically have to source discrete gate drivers, controllers, feedback, etc, and I'd think it does add complexity.

Re: Tesla Cybertruck Pricing and Specs

#744

Post by gopher_space »

Projectiboga wrote: post #705
agloe_dreams wrote: post #586

Earlier quoted context omitted.

Nope, you are thinking of EPS. This is a steering wheel that is not connected to the steering rack at all. It is like a racing wheel for a game console and the steering rack is like a car in the game. Just software.

I hope they learned from the Titan submersible to always go at least one step up from the cheapest game controller.

Their whole problem was custom hardware. I don't know why people were so hot on them reinventing tested commodity electronics.

Re: Tesla Cybertruck Pricing and Specs

#745

Post by m463 »

giobox wrote: post #561
lttlrck wrote: post #261

Earlier quoted context omitted.

Electric power assist already allows that. It's probably cheaper, lighter and maybe safer to have no steering column.

They almost always only vary the amount of power assistance, not the ratio. The ratio is fixed on virtually all electrically power assisted steering racks ever shipped. There is still a fixed mechanical linkage - decoupling this is what allows the ratio to be dynamically adjusted. To date only a handful of Lexus production cars have had dynamic variable ratio and decoupled steering via drive by wire. Electric power s…

and you could invert X :)

Re: Tesla Cybertruck Pricing and Specs

#746

Post by kube-system »

chung8123 wrote: post #482

It is extremely misleading to include gas savings as a reduction in purchase price. If anything that should be used as a comparison of overall operating costs and cost more than the purchase price but not as much more as the gas competitor.

I think Ford should counter and start putting the estimated savings in horseshoes and hay bales in their vehicle pricing.

Re: Tesla Cybertruck Pricing and Specs

#747

Post by toast0 »

XorNot wrote: post #265
whelp_24 wrote: post #153

Earlier quoted context omitted.

why do steer by wire at all? Is it cheaper somehow?

It means where you put the steering wheel doesn't have to have a firewall penetration and mechanical linkage through to the engines. That's a lot of mechanical joints which need to be continuous, and need greasing, sealing and have limits on relative angles between them that you don't need - as well as they have to have enough strength to transmit the forces involved. By contrast, with steer-by-wire your system is es…

It's kind of nice to still be able to steer a car that is disabled and needs to be pushed around. Not always feasible depending on the disability, of course.

Yes, tow trucks are great, but sometimes it's handy to push a car out of the way while waiting for a tow.

Re: Tesla Cybertruck Pricing and Specs

#748

Post by kube-system »

everfrustrated wrote: post #72

Faster quarter mile drag speed than a Porsche 911 _while also towing a 911_ That's incredible marketing. https://x.com/elonmusk/status/1730331223992472029

Automakers have been towing each other's vehicles and comparing to Porsche for decades:

https://i.pinimg.com/474x/08/32/5f/08325fd8b2a6e882b2a6e9ff8...

https://www.youtube.com/watch?v=3j-qy1s1RIM

Re: Tesla Cybertruck Pricing and Specs

#749

Post by resolutebat »

kortilla wrote: post #739
caconym_ wrote: post #583

Earlier quoted context omitted.

Reminds me of this article I saw recently: https://www.roadandtrack.com/reviews/a45688551/2023-tesla-mo... > The result is terrifying. Both terrifying to drive, and terrifying to realize that these things are out on the road, in the hands of a public I don't trust enough to handle this sort of power. Up on Angeles Crest, the Plaid is incredibly quick, but it doesn't have the chassis, steering, or brakes to deal with…

> pigheaded vanity of adult children. It is fucking disgusting. Presumably you suggest we also banish unhealthy food, cigarettes, weed, and alcohol, right? They are all responsible for significant deaths (especially when combined with any kind of driving) and are only for fun

Did you miss the part about being 2.5x more likely to kill other people, as in, not the people in the truck?

Re: Tesla Cybertruck Pricing and Specs

#750

Post by cyclecount »

everfrustrated wrote: post #72

Faster quarter mile drag speed than a Porsche 911 _while also towing a 911_ That's incredible marketing. https://x.com/elonmusk/status/1730331223992472029

This is the exact kind of crap I remember from TV ads for trucks in the 90s. This is cheesy garbage.
Post reply on HN