Tesla

[MX793]

This is not correct. All else is subordinate to it. :r0tor shrug:

Resistance isn't a property of the conductors?  Do tell.  And for a given set of environmental conditions, it is a constant.  A copper conductor at a given temperature has the same resistance regardless of what voltage it is carrying.  A conductor can have voltage with no current present.

[Soup DeVille]

Resistance isn't a property of the conductors?  Do tell.  And for a given set of environmental conditions, it is a constant.  A copper conductor at a given temperature has the same resistance regardless of what voltage it is carrying.  A conductor can have voltage with no current present.

If current is zero, power is zero and its a moot point.

And if you hold power constant and lower voltage, what happens?

[MX793]

And if you hold power constant and lower voltage, what happens?

Sure, I never said otherwise.

You cannot determine the temperature rise in a conductor from the voltage it is carrying.  Temperature rise is caused by current.  To calculate temperature rise, you need to know the current in the conductor.  Ergo, there is no direct relationship between voltage and the resistance of a conductor.

And the resistance in a conductor is a property of the material it is made from.

[Soup DeVille]

Sure, I never said otherwise.

You cannot determine the temperature rise in a conductor from the voltage it is carrying.  Temperature rise is caused by current.  To calculate temperature rise, you need to know the current in the conductor.  Ergo, there is no direct relationship between voltage and the resistance of a conductor.

And the resistance in a conductor is a property of the material it is made from.

You're jumping through hoops to leave specific things out.

[Morris Minor]

And when you drive it, you have to sing "Pow-pow Power Wheels!" the whole time. Those are the rules of driving EVs, I didn't make them, I just enforce them.

And this.
https://youtu.be/8DRCGcuByQc

[Eye of the Tiger]

Vulfpeck rocks. Badass bass player.

[MX793]

You're jumping through hoops to leave specific things out.

The statement "higher voltage means less resistance in the the conductors" is only correct if you make the assumption that the power through the conductor is constant.

[Soup DeVille]

The statement "higher voltage means less resistance in the the conductors" is only correct if you make the assumption that the power through the conductor is constant.

Its a fair assumption in little electric cars that

a: power is non-zero

b: more power is more betterer.

[Morris Minor]

Vulfpeck rocks. Badass bass player.

He is scarily good: Joe Dart. They are the best funk band ever.

[MX793]

Its a fair assumption in little electric cars that

a: power is non-zero

b: more power is more betterer.

Sure.  But if car A has a 600v system and car B has an 800v system, you can't tell me which of those two has more resistance in the conductors from that information alone.  Even if I tell you the wire gages used are all the same, you still can't tell me which one has more resistance in the conductors.

[Soup DeVille]

The hotter one.

[MrH]

The hotter one.

[GoCougs]

Resistance to the resistance.

[Rich]

'Ole Elon saying FSD will be worth $100K by the time of fed approval.  Said FSD price is going up some more in July, so get the orders in now. 

Snake Oil™ Est. 2016

[MrH]

'Ole Elon saying FSD will be worth $100K by the time of fed approval.  Said FSD price is going up some more in July, so get the orders in now. 

Snake Oil™ Est. 2016

https://elonmusk.today/

1,595 days since Elon Musk claimed summon would be able to autonomously drive a Tesla across country to pick up its owner in about two years. (1/6/2016)
"In ~2 years, summon should work anywhere connected by land & not blocked by borders, eg you're in LA and the car is in NY."

[MX793]

https://elonmusk.today/

Musk's prognostication abilities are dubious at best, as he has demonstrated repeatedly.

[Laconian]

LOL, that site is amazing.

[MrH]

My favorite one of them all:

"Tesla does not need to ever raise another funding round."  February 2012.

Since then, they've raised 12 times, for a total of $12.5B.  And are continuing to do so.  Just a total cash incinerator.

[GoCougs]

Plus, Tesla takes out boatloads of loans too.

[Morris Minor]

I've read about repurposing old traction battery packs into powerwall-style storage applications (IIRC Renault prides itself on that). This takes it a bit further.

Tesla quietly adds bidirectional charging capability for game-changing new features [Updated]
Electrek has learned that Tesla has quietly made Model 3, and likely Model Y, ready for bidirectional charging, which should enable some game-changing features in the near future.
Tesla and Bidirectional Charging
The advent of electric vehicles is expected to increase the demand for electricity, but electric cars can also offer some advantages by controlling the power load.

A study showed that electric vehicle fleets could save billions of dollars with controllable load and vehicle-to-grid features, and it would enable the grid to optimize its use of renewable energy.

Controllable load, the ability to control when an EV is charging, is possible with any electric vehicle as long as it is connected to a smart charging station or the vehicle itself has an internet connection
More...
https://electrek.co/2020/05/19/tesla-bidirectional-charging-ready-game-changing-features/

[giant_mtb]

Ah yes. Decrease the life of a $10k+ battery for some power grid feel goods.

[GoCougs]

Nah. Smart battery tech has been a thing for some time (i.e., electronic devices).

The real danger with "smart" charging is that gubment knows that much more about what you're doing (i.e., where/how/why you're driving).

EVs are a really bad idea, even beyond low value proposition and dubious environmental advantages.

[Morris Minor]

And those space suits. 

[FoMoJo]

https://www.youtube.com/watch?v=O3BH8edQVZ4&t=128s

[NomisR]

Nah. Smart battery tech has been a thing for some time (i.e., electronic devices).

The real danger with "smart" charging is that gubment knows that much more about what you're doing (i.e., where/how/why you're driving).

EVs are a really bad idea, even beyond low value proposition and dubious environmental advantages.

I would say with the subsidies and  free charging, it's worth it from a consumer perspective for the instant torque, low maintenance cost and low refueling cost.. and the added benefit of HOV lane  usage..

[CaminoRacer]

I would say with the subsidies and  free charging, it's worth it from a consumer perspective for the instant torque, low maintenance cost and low refueling cost.. and the added benefit of HOV lane  usage..

Ignoring any environmental reasons to get an EV, I still love my Bolt. It's a torquey go-kart

[Morris Minor]

Ignoring any environmental reasons to get an EV, I still love my Bolt. It's a torquey go-kart

EVs press all my geek/obsessive buttons.

[GoCougs]

I would say with the subsidies and  free charging, it's worth it from a consumer perspective for the instant torque, low maintenance cost and low refueling cost.. and the added benefit of HOV lane  usage..

On a micros scale EV value proposition is sketch with all the incentives compared against a $23k Civic.

On a macro scale though, EVs have destroyed/diverted an inordinate amount of value (via subsidies, free (subsidized) charging, special privelege, etc.), esp. from making that Civic that much better.

[NomisR]

Ignoring any environmental reasons to get an EV, I still love my Bolt. It's a torquey go-kart

Exactly!

[afty]

Ignoring any environmental reasons to get an EV, I still love my Bolt. It's a torquey go-kart

/thumbsup

https://www.motortrend.com/cars/tesla/model-y/2020/2020-tesla-model-y-performance-first-drive-review/

"The new Model Y Performance is probably the most convincing American sport luxury SUV I've driven in, well, ever."