Very interesting , thanks.

I know this may be extremely difficult/expensive, but it would be amazing to also do a teardown of the latest 2021 Model S Plaid (1000-1100+ horsepower, 1300 torque I believe?) when it gets released. Sounds a bit strange, but perhaps we should cross our fingers that somebody crashes one, so that you can buy the motor? Maybe set up a crowdfund to buy a crashed Plaid motor or something haha. Or even better, get hold of a Rimac Concept 2 motor (2000HP) - but that'll probably be even more expensive haha XD

Thank you, professor.

can i change the wiring to go from a manual ac to a automatic ac in my kia optima 2014? anybody knows please?

A talented man, bless you.

Thank you very much for this explanation. regards from the Netherlands.

Tesla builds the best EVs on the planet.

If he had long hair he would be doc from back to the future

Another Excellent video from "WeberAuto" I think Professor Kelly must be one of the best instrutors ever. It's a delight to view & listen to these videos. [Please Also check out www_autotec_no , a very good contribution to instruction , Arendal Norway ]

Thank you, Mr. John. This explanation is excellent and it helped us a lot

The Nissan Leaf had 8 bolts, professor !!!

Absolutely one of the best explanation videos, on any subject, that I have ever seen. Thank you very much.

I just started working as a software engineer at an automotive transmission remanufacturer and this is absolutely perfect! I knew a little and now I know a little more. Thanks for the details and taking time to make these videos.

It is interesting to me that they are using ball bearings instead of roller bearings, I was taught that roller bearings are stronger, interesting how technology has changed.

Hopefully video platforms like YT will be referenced many, many years from now in perpetuity. BC it will take generations to fix our educational institution from the contempt of teachers and unions who are now showing us who they really are, fakes who hate America. Not all of course but seemingly the majority of the institution.

Cleaning a dirty Model 3 Motor/Drive unit.? Dry ice blasting is the key to cleaning parts without destroying the finishes, coatings, etc. The dry ice pellets turn from a solid to gas upon contacting that’s resting on the surface-without taking off anything that wasn’t originally there. The pellets aren’t removing the surface grime; the pressure of the gas is. The PSI adjustability is pretty impressive. For example, it can remove the ink from a business card without harming the cardstock. It can even remove the “M” on an M&M without damaging the colored coating.

Next time use paint stripper to help the cleaning process. Or oven cleaner

Mosy practical approach to understand this. Thank you so much. Great work

So is the difference between large induction motors of the product and 90d besides the software then?..TIA

Excellent and informative. One point, silicon nitride is, in fact, a ceramic material.

try to disassemble the new Model S Plaid +

Loved the video long time awaiting.

Is that just a crummy open differential ( one wheel don't drive) in the Tesla? That should be a torque splitting or friction plate 'posi-drive' of some sort. So disappointing.

Primitive overrated US shit.

wow

I personally do not like that certain bearing "have no external lubirication/ no external cooling" ....what do I know? Okay granted I dont "know" shit...I'm just saying "I dont LIKE it!" lol....Because IF I personally spend a SHIT TON of money? And driving like I DO drive? (balls to the Fing WALL?) I just do NOT want to get STUCK out of warranty with a LUNCHED car that is now NOT even worth repair....ya know?....IF I buy one of these? i TOTALLY intend to explore it's touted abilities and WILL be BEYOND miffed IF the hype was BS....just saying....ya know?

I wanted to know the gear ratios they use and stayed for the whole video. So much great information, you've earned my subscription

In Germany we have highways where there is no limit 🙂🤭 still the Tesla's aren't speeding...

Thank you so very much for sharing. God Bless you sir.

Next presentation; Complete Forensic Breakdown of each Rare Earth mineral mined from the ground to the overall creation to this electric vehicle. I tire of the words Self Sustainable used in every persuasive forum we see. Just the use of fire alone cancels out the entire range of sustainable as petroleum coal natural gas can never be eliminated. Myth.

It is great video I found it very educational , appreciate your effort and time in making these videos, just a quick note: if you knew the max frequency of the inverter and the the max motor speed , which we already knew, then you would be ably to find the number of the pole of the motor .

I counted 8 on the leaf.

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Thanks for sharing these “deep dives.” It’s fascinating to compare and contrast the engineering, design, and manufacturing details implemented for the various EV offerings. Naturally, there are different design goals among the different EVs, but seeing the differences in implementation between this Tesla component and what you’ve shown in the Bolt, for example, speaks to levels of elegance, robustness, and performance that can really help a consumer make a better purchase decision, based on their needs. I think both approaches show sophistication equal to, or superior to the other, each in their own way. I also find it interesting that many of us have seen ICE production evolve over decades, and have grown in our understanding and comfort in repairing/maintaining those vehicles. The relatively rapid rollout of ICE-competitive EVs has suddenly brought vehicles to the market that are familiar in basic functionality (and for some component systems), but that require serious re-education to catch up to the level of, or different technology that’s present. We haven’t “grown up” with EVs like we have with ICEs. Heck, I’m afraid to do much to our Bolt for fear of not following proper deactivation/activation sequences (Thanks to your videos. No, I really mean thanks.). These cars seem as much an electrical power distribution system as automobile. I’m seriously considering your on-line courses and workshop to gain a better understanding, if not actual ability to service/repair EVs, as a tinkerer/owner. Keep up the good work and your positive, “breezy” style. Any references you (or anyone else) can suggest for a deeper, yet understandable, dive into the electrical power systems’ theory and implementation, including inverters, frequency control, regeneration and switching?

Is there a comparison of the number of moving parts of ICE and Performance motor? Very informative; amazing and creative engineering!

The nissan leaf diff has 8 bolts, not 6!

I love detailed tear-downs and explanations like these! Please keep them coming!

I remember as a young boy being fascinated by a display in the front window of an industrial machinery supply store in the center of Ludwigshafen Germany. This display, by SKF, consisted of a 6-foot high tower that had an elevator that transported a number of steel-bearing balls up to the top of the tower. Each was maybe a little larger than a Ping Pong ball. The balls then dropped off the tower to the floor below onto an angled thick round steel plate, where they then turned 90 degrees, jumped onto another angled steel base, turned 90 degrees again, and landed in a hopper to be transported back up to the top of the tower, in a continuous loop. I am not surprised that those Swedes can build bearings that can pretty much do anything.

Lose the mic

My great mentor taught me of one thing of you like something for example eating piece of bread not just try to like it but to know how it make.

Ludicrous Speed!

Turbo encabulator. :)

... monastically spaced bearings to prevent side fumbling and provide increased duractance while reducing sinusoidal depleneration.

Wow, so explanatory. Thanks boss keep doing a great job

Great Tech - I wish I had found your Channel a long time ago - great info. 5 Star Chanel!!

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This is fascinating, I’ve seen the teardowns of the Model 3 and Y from Munro Associates, though they obviously keep a fair bit of information for themselves to sell to potential clients, so seeing this for the Model S Performance motor is really great! Liked and subbed.

Does inverter cover has seal O-ring or sealing compоund? On first sight, it looks like there is no water resist. Thanks for video, it is pleasure to watch it, as always

I was looking this kind of VDO for a week. Finally this one help cleared out my doubts Thanks so much.

Bought and driven by suckers.

what is the model of that car elevator @7:05?

I don't know how there are still people insisting on EV's being simpler and maintenance free. Please watch this and understand it.

How do they vary the speed of the 3 phase AC motor? Does the voltage or current input change? What is the maximum input 3 phase voltage going to the motor from the inverter? Is the 3 phase input motor voltage constant?

Fantastic Video and Explanation ( Right at the end of the video - you refer to High Voltage - in electrical engineering that is considered greater than 240Volts - which is doubtful - I think you are meaning High Current capacity cabling rather than High Voltage. I would be interested to know what is the actual voltage being provided to the motor - thank you )

Unlike ICE engines, electric motors are simpler and easier to build. This is where Tesla has zero advantage as others will catch up and surpass Tesla, relegating the brand to a footnote in automotive history.

So what might be the downside to slightly smaller roller elements (balls) in the high speed bearing? Lesser life span and / or more shaft rattle? Great presentation and reveal of this wonderfully complex powertrain. Weird to get this in a disposable product with a limited life span. Who is going to work on it when it’s ten years old or more. Parts availability? A lot of unique parts and seals!

Germans get to 250km/h daily.

That was excellent !

Simplified to perfection 👌i didn't know now i do ! Much appreciated 👍 Uk

Congratulations the best mechanical explanation I've ever seen !!! Every particular of the motor has been shown in big detail !! Well done !!!

Non-lubricated bearings on the motor shaft at 18,000 rpm?! WOW I am impressed and also leary, lol! Seems later you mentioned these 2 bearings are lubricated internally, had to be!

If didnt know better, in my opinion, your seeing alien tec.

I watched this whole video till the end, before I knew nothing about the technology that goes into these cars. Very professional and educational video!! thank you !! I will subscribe and watch more ! Keep up the good work!!

Informative content Professor. Thanks for teaching me something today. I think I'll have a look at the Bolt videos now.

Something new for youtube, a really great video, that is interesting and informative to even shade tree mechanics like myself. Thanks for the video.

0:55 I suggest blasting this smoked pork with dry ice or walnut shells. Saves a lot of time and nerves. :-)

Amazing job, absolutely love that this information is becoming readily available to the average idiot like me.

The gear mounted on the electric motor, is usually called a Pinion Gear, which is usually a small spur gear. The Pinion Gear drives the Counter Gear, Which is usually a large spur gear. The Counter Gear is directly connected with another Pinion Gear, which drives another Counter Gear that is connected to the Differential. Most people call the Counter Gear that is connected to the differential a "Differential Gear".

As a doctor, I really suggest you to workout / somehow reduce your weight. Your obesity is affecting your breathing. As for the video, thank you for sharing a quality video on EV motor.

Hi, I'm still confused about the placement of the rotor with respect to the stator. Are you saying that the rotor is allowed to move up and down (along the axis of rotation) when assembled?

I enjoyed every minute of it great trade for our youth to learn certain levels of it should be taught in high school remember back in the day we had pulpwood harvesting auto mechanics brick Masonry and wood works we had quite a bit to pick and choose from we need to get back to it we respected each other and work together those were the great days make America great again

I want to see the new PM assisted Tesla rotor please. Another great breakdown of really clean old parts. Glad I'm not paying for specimen clean-up labor and waste disposal. Great student free labor?

But how many changes did they make in the last 4 years?

I count 8 books on the Leafs gear.

I don’t understand why anyone thumbs down this video. This channel is easily one of the most professional automotive channel on IRmys. Thank you professor for making such high quality educational videos!

Wow! you got this down, really enjoyed it, those bearings fail, $$$ and the whole drive unit gets scrapped, i think those bearings are shrinked / press fit,

That was fun - 46 minutes just flew by. Looking forward to your video about the Model 3 motor.

Excellent post. Very well taught.

I worry that Weber might be short of tool cabinets. Sheesh!

who the damn is disliking this video lol

Professor, I was really hoping to get details on the Amps and Voltage being switched by the IGBTs. It's pretty impressive. How do they limit the RF interference from the fast switching speeds of such a high current/voltage? Is this why there isn't an AM radio in the Tesla (???). Of course i'm an EECS geek so I was really impressed with this 3 phase motor without a permanent magnet. The electro mechanical aspects are fascinating, since it's where theory meets the road. Getting all the heat out of a 60 lb rotator that is suspended in air spinning at near 20,000 rpm is just crazy. I used to joke with my wife that there is no oil to change in her Tesla, so why do they have periodic maintenance. Now I take it all back.

Fascinating!, thanks for sharing this interesting and informative video

The best tutorial video I have ever watched on youtube! Very well made and comprehensible! Thank you Prof. Kelly!

Gran video, los que nos gustan las maquinas siempre aprendemos con ellos. Gracias

And this is why I dislike this addition to speed. All this over-engineering is a contradiction to an EV. I'm not impressed that you can go 3 times the speed limit.

Great job enjoyed the video 👍🏻

A one speed gear reduction unit is correctly called a transmission because it is responsible to transmit the input power to the output drive, shifting gears is optional, it’s a gear transmission rather than chain transmission found in other vehicles but nevertheless a transmission ....

🌈🇺🇳27:30

Where did the fire start, in the motor, in the battery or at it’s connection to the motor assembly, or somewhere else?

Why is he laughing at the size of the bearings? Because they stupidly or wisely made them super strong to handle 550 hp from a standing start?

I am puzzled. At about 17:25 you state that the motor bearings do NOT receive external lubrication and then at 26:00 you say the opposite????

thank you !

Great Video! thank you for the informative content!

I think every American engineer ought to be proud of the work accomplished by Tesla. I'm an EE (retired) and I bought a model 3 because of this ground-breaking work. After 18 months, it is still the best car I've ever had. Thanks for your incredibly well done explanation.

Hey. Checkout Rich Rebuilds here on IRmys. He may have more parts and information. Love the video also!!

Best explanation video thus far! Thank your!

Would LOVE to know the significance of 6 bolts on a ring gear compared to 16 bolts...

He got all of this from 2wd RC buggies. Take a look coach

Brilliantly informative, thanks!

SKF "when pedigree matters and it does !"