If you doubt Tesla's engineering then you need to watch this
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What impresses me is the Tesla motor parts can turn at 18000 rpm and not explode. A Dremel tool spins its head at ultrasonic frequency max (20K) but it is small and light. For the Tesla motor to spin at that speed is strong parts engineering, because 1) it doesn't explode 2) wear at that speed is high normally. I have to wonder how they lube it, unless they use magnetic non-contact bearings.
Another impressive thing is the robotic manufacturing that Musk set up - it is very efficient. Others use robots but he has polished it all.
When Sandy Munro first took apart the model 3 engine, he noticed that the magnets consisted of smaller magnets glued together. It took him months to figure out the reason behind this: Tesla found a way to increase performance of cheaper magnets to match better, more expensive ones.
This one change saved Tesla a ton of money. Ford, on the other hand buys their motors from an electric engine company, thus eating away at their profits.
This sort of thinking is what has allowed tesla to achieve a 30% + profit margins per car (and going up every year).
Cheap materials....lower grade....gotcha.
The Model3 Tesla motors are rated for a million miles. Saving money means more profits.
iPhones are cheap to make.....still cost a fortune to buy.....it's called greed....and debasing the value....
The Cost of EVs are dropping fast as the cost of batteries drop. Simple side effect of production of scale.
yeah...and guess what....the sticker price will go up....guaranteed. Cost is not....PRICE.
Price will go up...."due to demand...articifical supply constraints.....logistics.....unforeseen events.....partnerships increasing fees...."
The price has already fallen. Once they ramp up the 4680 battery the cost of the battery pack will drop drastically. This will allow Tesla to drop the price according to what demand says.
But their batteries blow up after 50k.... It's like saying the thread is steal....and then making tissue paper clothing with it....the thread is lifetime guaranteed ;)
Source? the First model 3 batteries are rated for 300k-500k Miles.
So apparently.....there have been 1 car fire for every 200M miles.
Over that same time span approximate 3M cars were sold...
Following me....
about 100 fires have been recorded publically....
100 x 200M = 20B miles.
20B miles / 3M cars ---> 7K miles on average per vehicle.
.....
so 100 vehicles ran 100X more than average......and they blew up??? PSHAWW
This is the most stupid shit I've ever seen. I was constipated but after reading this I am no longer..
Thanks
Average cheap angle grinder can turn at 12000 rpm and not explode. Turbochargers in car engines rotates at 100000-200000 rpm and don't explode too. Nothing exceptional in 18000 rpm for electric motors really.
Lubrication is not a problem too, look how turbochargers lubricated, f.e. And at 18000 RPM you could just use ball bearings.
High RPM is mostly a question of rotor balance. Today, with modern sensors you could balance any rotating part pretty well.
Because the radial force is proportional to the square of the velocity, there is giant difference between the force on materials at 12K and 18K spin speed. Any casting or machined metal in the Tesla would have to be flawless internally.
As for turbochargers, gas vehicles have oil pumps to supply lubricant to everything needing it, an electric car doesn't. At 18K, ball bearings would need forced lubrication, as the centrifugal force would strip them of lube very soon. At Garrett Airesearch we had to run a high speed rotor in a vacuum with magnetic bearings because a metal one could not last at these high speeds. That is why I'm impressed with the Tesla motor design.
Model S Plaid motor: https://www.youtube.com/watch?v=Ci4qiHJvMEw
Only rotor. And that is not that hard.
Or you should use sealed ball bearings. Also, centrifugal force for bearing much less that for the rotor, since diameter of rotating parts is much smaller. Vaccum cleaner turbines runs at 20-30K RPM, and ball bearings perfecly OK without forced lubrication for many years. SKF gives limiting speed for randomly taken W628/8-2Z bearing at 45K RPM f.e.
I had the wrong model. I was envisioning the rotor running in a planetary outer bearing race but with the hub connected to the wheel. But that's wrong because it couldn't be direct drive, the wheel does not turn at 18K rpm of course. I'm going to have to go research the per-wheel drive train.
It's a bad idea to put huge mass of motor into the wheel. You should keep unsprung mass as low as possible. AFAIK, Teslas have usual wheels with CV joint ended semiaxles connected to differential - reduction gear - motor assembly. That assembly looks like letter T, where top bar ends is a motor and reductor and vertical bas is differential. Nice and simple design, but everything is totally ruined by unsing highly ineffective and insane expensive chemical battery with ridiculously low energy density as power source for that nice drivetrain, making all thing senseless. Electric passenger cars have no future unless normal power source will be invented.
Yes. I had just researched the motor-to-wheel connection, which looks a bit weird but now I see there is a simple fixed gear reduction in the housings. Instead of the complex mechanism in a gas vehicle transmission, the speed reduction from the electric motor is handled by simple fixed gears and computer control of the motor speed.
Now as for the power, we are still waiting for Doc Brown to release the Mr Fusion powerplant to use instead of batteries.
Yep. And if you use asyncronous motor or synchronous reluctance motor it is also extremely cheap and reliable, since the only copper is in stator windings, there are no expensive rare-earth magnets and there are no brushes. Also, electric motors have high torque at 0 RPM, so no any need for clutch.
Power source should be of same simplicity, reliability and cheapness, and there could be huge breakthrough in our means of transportation.
And if we are talking about Doc Brown, the flying option will be necessary too. It is much easier to fly even, on some small old Cessna/Piper/Beechcraft, than to drive the most advanced car. :)
PS: IIRC, Doc Brown didn;t invent Mr.Fusion and flying option, he upgraded car in the future. And since his future with flying cars and other stuff was in 2015 we are definitely in some wrong and weird timeline.
https://tesla-fire.com
https://cdn.motor1.com/images/mgl/Pz9PG/s1/bmw-x1-catches-fire-in-new-jersey-tesla-owner-alert-driver-saving-his-life.jpg
Infomercial? only morons that fell for the FUD would think that. I am just here to show you the truth with nothing but facts.
This man sells stocks....and needs to offload some shit....the meme stocks continue...what a joke. Delete this garbage
I only buy, I will not sell a single share. Evs only make up 2-3% of the market. Selling now would be idiotic.
....that only works if you buy other EV companies and into the Industry verticals....
Tesla has no competition. The numbers don't lie.
Hand Rubbing Intensifies
Wow....this sub has become nothing more than an anti-reddit (with all baggage that means).
You are actually shilling Tesla.....fa fuq?
Must be a dumb bot.....you do know that Tesla on these forums means...Nikola....and not the musk travesty....
Musk is fraud....that's the only thing we care about looking into ...proving it to the world .
Stop spending your marketing budget on these forums...
Can't even make anything out of your argument. Keep it simple, give examples. Stick to the engineering. Also, watch the video first.
You cannot understand my simple English....are you a foreign actor bot? Lol.
So weak....you think you are being trendy...promoting a scam artist in a forum who calls out scam artists....
Choose a topic instead of making blanket, empty insults. Let's talk about the 4860 batteries, or the motors, or whatever you want to talk about.
Better yet, watch the video and point out where Sandy Munro is wrong lol.
They don't need to think. NPCs all of them...I used to like musk until I did the smallest bit of research after his Joe Rogan appearance....he is nothing but a show boater
I think it's prep...they need big fails so they can bring in bigger controls.
Essentially -- they need to have someone "go off their rocker" who has so much power and control, that they can effective "communize" the assets under the guise of "mental illness, extremism, etc"
For a mindless ignorant moron, sure.
Victim? lol You can't be bothered to watch the video. You're a mental midget.
Watch the whole episode, this will clear a few things for you. If you don't know who Sandy Munro is then go find out.
There is no doubt about Tesla's lead. Look at how big they are and they just got started. Invest in this shit peoples, this company will be bigger than Apple next year.
Wow....so fucking dumb....go shill meme stocks on Reddit ...
How did you say....lawsuits inbound??? Hahahahahahaha
Tell me specifics so we can discuss it. What is so "fucking dumb". Tell me where Sandy Munro is wrong.
Fucking dumb is trying to sell electric cars with zero infrastructure. I'll give a shit when he makes cars fly.
Tesla is the only car company that is currently building state of the art Gigafactories. They are about to reveal their new locations for the next two.
They are also the most vertical integrated car company ever.
Of course you did not watch the video.
It is embarrassing to see how unprepared anti Tesla morons are.
Fuck your video. Can your supercar plug into my power without tripling my bill. Do I have to sit in my fucking car 45 minutes while I charge up? He should be building magic fucking carpets with all his brain fucking pan.
"Can your supercar plug into my power without tripling my bill"
Yes, I spend $45 a month to drive and I drive a-lot. I have it set so it charges at 1 am, which is the cheapest electricity.
"Do I have to sit in my fucking car 45 minutes while I charge up?"
When I travel, by the time i take a piss and get something to eat I'm pretty much done charging. However I always find myself taking piks and going for a quick walk to check out the place. I always look forward to taking a break from driving anyway.
hahaha.....so when china nationalizes theirs.....yeah. whose laughing.
If they nationalize it then that means Ford, GM VW, BMW and others are done as well. Yeah there is a chance that everything goes to shit, then you may have to go hunt big game lfor food like a real man. See ya after the apocalypse
Sorry. what I am referring to is the specific phrase "Invest in this shit peoples, this company will be bigger than apple next year"......
Sorry - that is obviously a financial advice statement with no justifications and likely the result of a meme stock purchase at the peak (after the fall and still holding)