350 mile range Quad Motor rumored to be 1st trim launched

[JBee]

Yes they can handle it, but just because you can doesn't always mean you should. Ever wonder why there is no standard range performance model 3? If you spread the stress over more cells, they last longer. And Tesla has a pretty generous battery warranty, one that i have already taken advantage of when my battery died at 61k miles..

If you have a tri or even quad motor configuration, it will be capable of higher discharge rates than dual. Plain and simple. You will need a battery capable of higher discharge rates to compensate, assuming your first design was finely tuned. This means more cells, because there is only one cell type possible: 4680. Because structure:

The amount of motors has nothing to do with the discharge rate.

Are you trying to say that 4 "half-sized" motors draw as much as 4 "full-sized" motors, and not as much as 2 full size motors?

Because as I already wrote, there are many different types of motors that Tesla makes, and not all have the same power input or output. So what you say is "plain and simple" stems from your fundamental misunderstanding of how motor combinations actually work, and what determines the power draw. Simply: you can have one single motor with more power than a Plaid tri-motor, and you can have four motors, for a quad setup, with less power (or the same) as the Plaid trimotor setup.

The 4680 is ~650 microns thick, a 2170 is ~250. Pretty sure, the steel used is also different. I don't know how the math works out on that as far as force transfer goes, pretty sure you need modeling software and a super computer for that. But there are no structural 2170 cells on the market as far as i know.. 4680 cell is designed to be. The foam is not enough, you need the whole system. We've seen structural packs in the MYs. But only using 4680 cells, for a reason.

As I wrote in my post, the structural part is not the "webbing" of the structural sandwich pack, rather it's the lower and upper skin that takes most of the force. It's not actually that complicated, no need for FEA to understand the concept. As you can see in the diagram below the main forces that go through the structural pack are compression and tension though the top and bottom skins, the core only provides the support to keep the skins in place. If both skins would not be separated by the webbing core, then the skins would not receive any load and would collapse.

As I also said previously, even if the 2170 have half the thickness walls, it would still have twice the wall material than a 4690 pack, because you can fit 4x 2170 cells in the space of just one 4680. Plus having a closer cell density would be better again, especially given that the forces through the webbing a of a diagonal nature. Hence the structural shape of a truss and webbing:

Note how the top and bottom sections are much larger than the diagonal webbing. The top and bottom sections also use much thicker steel. These trusses, as also sandwich assemblies are really good at long distance load transfers, either between columns, or car suspension springs.

They would sell the Quad variant if they could. I just don't think the 4680 energy density is there yet. For Tri, sure. Need the cathode plant up and running for a few months i think, before we can start thinking of elon's favorite plaid quad model.

So again here, you misunderstand that it is actually the size of the motor, and not just the number of motors. You then use that false assumption to say the battery "can" do three motors but not four motors. As above you can have 4x 80kW motors totalling 360kW which would be half of the plaid 720kW three motor output. If that is so then a half size 50kWh pack would suffice to run a quad motor.

Your assumptions are therefore incorrect.

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[Baldey]

Correct, i am assuming that higher motor count will equate to higher power output. Yes, i am aware that motors have sizes. But that just makes sense. A more expensive quad motor variant with less power than a tri just doesn't sound right.

There are advantages to each power train, like being able to lock the differential vs torque vectoring. I don't think that all trims will be quad motor at different powers, if that's what we're talking about..

 

[Art O'Connor]

Literally that's very few routes.

Damn, there's even a charger at the reservation where I pulled through their landfill on the way back to the highway from the malachite mine we visited.

Extraterrestrial Highway is going to be hard - even the RV parks out there are closed - but dude, that's literally the definition of few.

-Crissa

Why would you want to go to Gabbs? Berlin Ichisouras State Park. And, this week - Burning Man in Gerlach. Neither has charging staions on the way per your map. I happen to know there is a charging station in Gerlack, but it does not show up on your map or Charge Finder. Nevada is a big state and most of the interesting stuff is not in the two big metro areas (Reno & LV). I live in Reno and like to take a day trip north by Pyramid Lake, Gerlak, the petrified forest, Vaya, Cedarville and back to Reno via Duck Lake. Basically. staying in just my County - Washoe. Over 300 miles with no apparant charging stations north of I-80. This ain't the coasts - I need that long range.

 

[WHIZZARD OF OZ]

A friend and I were speculating (I take all this to be speculation) that they will come out with the 4 motor 350 mile version at a competitive price - then offer a software upgrade to 4 or 500 mile range for extra money for those who want to pay the premium. That would be sort of the reverse of what they have done recently w the MS and MX cheap versions.

Imagine how HOT the sales of a 'cheap version' CT will be !?!?!?!

 

[Crissa]

Why would you want to go to Gabbs? Berlin Ichisouras State Park. And, this week - Burning Man in Gerlach. Neither has charging staions on the way per your map.

Neither are on the map, because neither were around Tonopah, which you were talking about.

And why would I want to go to the state park? I do mostly primitive camping and mushroom/rock collecting. Can't do that at the park. That's why I was at a copper mine.

And yeah, there's no chargers out in Gerlach. It'll be a problem. But there's high tension wires out there for the old mines, so it'll happen eventually. And there's multiple RV parks to charge currently. Which gets you across the wild lands.

So yeah, few routes aren't supported yet. And that number is shrinking. I was surprised to see so many chargers on my route this summer, as I love to go up the spines of the mountain ranges.

Look! Two pull-through slots. In Alturas, CA. Next to the best supermarket in town. I was able to get unsweetened shelf-stable soy milk and fair-trade chocolate along with Mexican spices and tortillas for the next few nights' camp dinner.

Basically. staying in just my County - Washoe. Over 300 miles with no apparant charging stations north of I-80. This ain't the coasts - I need that long range.

Dude, there's no road north through to anywhere in Washoe County. Complain to the county, not us.

I was literally in Burns having lunch Thursday before last.

(Please excuse the little squares, they're public access collecting areas I've gone to and I don't know how to hide them on Google)

Both of these routes are doable in a Tesla, but only one is doable in a Bolt. And I'm not sure if they're doable on an Energica yet... But it's getting there.

You're entirely wrong that there are no chargers for 300 miles north of Reno. The only two actual highways that get somewhere north literally have chargers.

(Pre-pandemic it was possible to get across 447 but a bunch of the tiny waysides seem to have closed. Only the most hardiest and self-reliant should try crossing the desert on those roads, though.)

-Crissa

 

[GlockandRoll]

Again, there IS no quad motor.

 

[Crissa]

Again, there IS no quad motor.

Why the trolling?

-Crissa

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