Tesla Model 3 and Y Modular Motors

Check out the modular components and design of the electric motors on the Tesla Models 3 and Y. See how many parts are common and interchangeable.
Corrections:
1. I swapped the definition of a Hunting gear set with a Non-Hunting gear set.
TIMELINE:
0:00 Introduction
0:27 The rear motor of the Model 3 and Y
1:08 The input shaft with 31 teeth (Prime Number)
2:00 the input shaft SKF bearings for a rotor speed of 18,447 at 262 km/h (163 mph)
2:40 The countershaft and gear with 81 teeth (Factors 3, 3, 3, 3)
3:00 The input shaft to the countershaft gear ratio of 81/31 = 2.6129:1
3:10 The countershaft pinion gear with 24 teeth (Factors 2, 2, 2, 3)
3:15 The ring gear and differential case with 83 teeth (Prime Number)
4:30 The countershaft to ring gear ratio of 83/24 = 3.4583:1
4:43 The overall gear ratio = (81/31) x (83/24) = 9.0363:1
5:03 The published gear ratio is incorrect. This is a Hunting Gearset
5:48 The CV half-shafts connect to the differential side gears
6:46 MUST SEE: two cool Permanent Magnet rotor demonstrations
8:05 The modular design of the motor shafts and rotors
8:25 MUST SEE: Watch as a rear motor is changed into a front motor
10:32 The differences in the modular motors
11:35 See what a permanent magnet does to the Induction Rotor
11:55 An aluminum core front induction rotor on the Model Y
12:13 There are at least three different rotors for the Models 3 and Y
13:54 See the rear motor inverter and where it attaches to the rear housing
14:45 The matching part numbers of the rear inverter and the stator (A matched set)
15:15 The three different power and torque levels of the Model 3 and Model Y
16:15 MUST SEE: See the front motor inverter attached to the rear housing!
17:37 the common bolt pattern and opening for the stator housings
18:30 The oil-cooled stator and ATF-9 fluid
18:47 The interchangeable transmission heat exchanger
19:13 The interchangeable variable speed electric oil pump
20:25 The interchangeable spin-on oil filter
21:06 What is not interchangeable between models
21:20 The rear drive-unit is mounted parallel with the ground
22:20 The front drive-unit is mounted upside down and on an angle
23:05 The matching part numbers of the front inverter and the stator (A matched set)
26:30 Additional EV training opportunities at www.weber.edu/evtraining
26:58 Video summary and donation opportunity
I have nothing to prove this, but while looking at used Model 3 motors for sale on eBay, I gathered the following information. There are three different part numbers for the combined rear motor inverters and stators. Stators can have different milli-ohm resistance values and still appear identical.
* 1120970-00-D (24 SiC IGBT modules Based RWD model 3)
* 1120980-00-C, D, F (24 SiC MOSFET modules Performance AWD model 3)
* 1120990-00-F (18 SiC MOSFET modules Non-Performance AWD model 3)
ABOUT US
Weber State University (WSU) Davis Campus - Automotive Technology Department - Advanced Vehicles Lab. A technical description and operational demonstration of the Tesla Model S Rear Drive Unit (RDU) and Fear Drive Unit (FDU).
We teach current vehicle technologies to our automotive students at Weber State University and online. For more information visit: www.weber.edu/automotive
This video was created and edited by Professor John D. Kelly at WSU. For a full biography, see www.weber.edu/automotive/J_Kel...
Visit my other youtube channel / vibratesoftware to see the amazing NVH app for vibration diagnosis!
ADDITIONAL TRAINING FOR YOU
Join us for hybrid and electric vehicle training with two online courses and in a 5-day on-campus boot camp with Professor John D. Kelly. See www.weber.edu/evtraining
DONATE TO OUR DEPARTMENT
Please consider a donation to the Department of Automotive Technology at Weber State University here: advancement.weber.edu/Automotive
QUESTIONS FOR TEACHERS
1.

[@jozeskufca2255]

This is the professor which every student only dreamed off. Big respect to you

[@rajeshsingh-dl8fj]

Can you please add some knowledge about Rivin motors

[@-Swamp_Donkey-]

Poop fart!

[@mermaidmuncher2708]

Nobody takes the time and effort nor does anyone go into great depth and detail as you do while making these superb videos. Thanks for sharing. Your great professor!

[@WeberAuto]

I appreciate that! Thanks for watching

[@rkgsd]

That's because most of the other folks don't understand the mechanical workings of these electric vehicles like the professor (other than Munro).

[@michaelaxlin]

I could not agree more! Superintteresting and smart! Greetings from Sweden (the home country of SKF).

[@GharacDurac]

of course other car manufacturer does :D To make there cars better in the future. They could learn a lot from tesla.

[@pankajbalegar]

I love it so so much! He feeds my curiosity

[@davidkierzkowski]

It’s amazing how much simpler the drivetrains rotating assembly is compared to ICE.

[@WeberAuto]

Agreed! Thanks for watching

[@LeoPeink]

That's why EVs need low mantainance. The real engineering problem, however, is batteries' energy density

[@edman2740]

Depends on your definition, but sure

[@TheAnnoyingBoss]

@@LeoPeink and making them last longer and degrade slower. Number one things keeping me away from these electric cars is not wanting to have to charge on road trips forever, prolonging the already extremely boring road trip. Also the battery ages and will probably need replacing. If they didn't lose so much juice after only a few years they'd do better on resale ability. Also all these computers as they age are only spelling disaster for us as time goes on I think.

[@jimcmf2]

🔴🔴🔴🔴🔴 CONGRATULATIONS !!! Tesla has obtained FSD LEVEL 2 Status . It took them only 10 years. They are on a roll!

[@CarStory]

This 9.0363 gear ratio explains why the Model 3 can move forward so slowly and accurately. I was seriously impressed with the amount of control you have with the throttle pedal.

[@llavero5]

like any other existing car

[@Zonkotron]

@@llavero5 Nah. Not at all. Even hydraulic automatics have a minimum creep speed below which you are fettling around with the brakes........not in electric.....

[@richardwallinger1683]

top quality demonstration of the magnet flipping in both directions .

[@walsakaluk1584]

Agreed. That was neat.

[@youdonthavetoreadthispost.5850]

Like going to a science fair, for me. I think it's great !

[@WeberAuto]

Thank you very much!

[@L3x4Pr0ne]

This channel is fascinating, educational, and well-presented. The amount of visuals, demos, and detail of the breakdowns are second to none. Well done.

[@rodfrey]

All right. All because of you, I'm quitting my job and taking a degree in mechanical engineering. Thanks a lot.

[@WeberAuto]

Lol. Best wishes

[@Stefan_Dahn]

11:58 Professor Kelly and Sandy Munro would be a dream team! 😍 If I had 2 wishes, there would be 2 videos together. One at Munro and one at Professor Kelly. That would be superb! 🙏😁

[@WeberAuto]

Thank you very much

[@artempavliuchenko1815]

It's hard to find a better video about Tesla motors with so much details and perfect explanation. Thank you so much Professor John D. Kelly! 😊

[@Clark-Mills]

Thank you for an amazingly interesting in depth explanation of how things work inside there. The in-hand flippy magnet, the "hunting gear-set", the modularity of the motors... I just have to thank you now and I'm only 10 minutes into the show! :)

[@WeberAuto]

I am happy you liked it. Thanks for watching

[@Californiansurfer]

Great presentation. I attended Cerritos college electrical 1995 to 1999. I worked on battery conversions vw and saw t-zero. The t-zero used lap top battery today’s Tesla. I remember the direct power no delay. We also made go cart. Six battery and controller. We used it at golf and stuff cart track. The owner wanted 30. It was a fun time. Thanks again. Downey California

[@WeberAuto]

Cool stuff! Thanks for watching

[@stelthirdeyeproductions5819]

Well done and respect for the engineering design team! Lovely hi-tech modular moving parts. The lecture deliverance is as 'usual'! Of high standard. Many thanks professor.

[@MatteoBurroni]

When the professor quotes a Munro video, that's really apotheosis! Thanks for complementing the information which I've learned through Sandy's videos.

[@WeberAuto]

Glad you enjoyed it! Thanks for watching

[@Arthur-gq3bp]

This is my first time on your channel and I can assure you that I was amazed by the quality of your work. Thank you for sharing knowledge.

[@WeberAuto]

Thank you very much

[@mouloudzekar4685]

Outstanding! Didactic, simple, straightforward, one mouthful at a time. Deserves supporting.

[@maxflight777]

Sir, thank you for submitting this. Utterly brilliant. I collected my MY two days ago. I’m shocked. It’s not just the acceleration. I love the sound system and the cars ride/refinement. It’s worth every dollar. A compelling car.

[@MarkXHolland]

Stumbled across your work after I bought a Honda Insight, way back. Glad I did! Another superb, informative and entertaining video, thank you.

[@WeberAuto]

Thank you very much

[@djosbun]

Hello Mr. Kelly, I'm not a big fan of hybrid cars (well, except Formula 1) or electric cars yet but I am a HUGE fan of your videos. Your students are truly lucky to have you as their professor. You're helping to drive the future of automotive repair and diagnostics.

[@WeberAuto]

Thank you very much

[@cohenkevinloriqueen818]

Dave.. have you drove a Tesla ?

[@binhta]

You're one cool professor, professor Kelly. I'm not a techie person but yet, I'm able to comprehend most of what you said in the video. It's definitely a fun learning experience by watching you. Thank you!

[@GOVAUS1]

Amazing. Thanks for the whole demo about modularity. A real treat.

[@DANTHETUBEMAN]

The small block Chevy led the way to part interchangeable manufacturing! Same starter, same distributer, same transmission bolt pattern, for big block and small block Chevy,, all the cinder headed where interchangeable on small block engine and be brake manifolds. Was great for the aftermarket performance parts industry also.

[@WeberAuto]

True! Thanks for watching

[@mikesimms3380]

This is a great video for those that MUST understand what's going on under the hood. I'm hoping to do a retro-upgrade on a classic vehicle one day, as more and more of these used units hit the streets. This is truly motivating!

[@JonnyJetPilot]

I’ve toyed with that idea myself…. A Tesla powered ‘57 Chevy!

[@rayh91]

Knew nothing about electirc powertrain and learned quite a bit, just in this informative video. Very impressive and thank you.

[@mbiehl2]

Having gotten to drive a Tesla Model Y and see how the motors are made and operate put it all together. Appreciate the in depth explanation.

[@freyja_wildes]

Haven't finished yet, but thank you. As you present the different parts, I want to learn more about SKF, the history of bearing invention, how the 2 different motors work. It's what I love about mechanics and stuff, the more you learn, the more questions you have, and the more you learn *repeat cycle*

[@WeberAuto]

Awesome. Thanks for watching

[@buenito35]

Great to see how happy the modular design makes him. he gets giddy, you can see it on his face. Love it!!

[@youdonthavetoreadthispost.5850]

Lack of interchangeability is a 'stock' nightmare, and this man knows it. In a pinch you can rob Peter to pay Paul and get home by cannibalizing's casualties to fix repairs. If it were human it would have interchangeable arms, legs, and attachments. This is a one size fits many approach. One size fits All, is the ideal. Many varieties/many parts is a nightmare that's hard to handle, and it won't be going to Mars. Same technology in use buenito35 - same man at the helm. Musk uses 'commonality of parts' in his equations.

[@WeberAuto]

Thanks for watching

[@sanurshenoy5739]

Thank you professor. Nobody explains it like you do. I enjoy watching your videos.

[@ericulrik6659]

Fascinating stuff! Thank you for providing such excellent details and answering questions I didn’t even know to ask…

[@Wol747]

The engineering design and forward thinking that’s gone into these motors is very impressive: thanks for showing us what we will - hopefully - never see.

[@WeberAuto]

Thank you very much!

[@iivaridark6850]

It is not only useful but a sheer joy to watch these videos, so Thank You very much!

[@WeberAuto]

Thank you very much!

[@kobefox9163]

What an absolute fantastic video like always. Very much appreciated, Professor Kelly.

[@MrVorticose]

Great video! Thanks for taking the time to do all these detailed tear downs. Was really interesting to see what’s in my model 3!

[@WeberAuto]

Thanks for watching

[@Stefan_Dahn]

7:15 Professor has the magic is his hands! And a unique "hands on" (double meaning 😉) mentality for teaching.👌 Excellent video again! 👍👍

[@WeberAuto]

Thank you so much 😀

[@MarioDallaRiva]

Professore, welcome back! Always exciting to see your uploads 👍🏻

[@WeberAuto]

Thank you very much

[@terrydunaway8244]

Found the Weber Auto channel this weekend while researching the Telsa's Cybertruck. I have enjoyed all the videos Professor Kelly has presented.

[@JohnChuprun]

Just found all your videos - such fantastic educational content. Thanks for all your effort to share this sort of insight.

[@AlainHubert]

Thank you, professor. I did enjoy this video!

[@WeberAuto]

Glad you enjoyed it! Thanks for your support over the years.

[@JimMcGrath25]

A professor who has passion for the subject is a joy to watch. Thank you professor !

[@FoamyDave]

Thanks for the analysis and clear presentation. I had no idea how well thought out the drive systems are on my Model Y. I don't think you can achieve this kind of efficient design by buying parts from 3rd parties.

[@TerralingMarine]

Thank you sir. I feel more educated and am impressed with how much of the overall system is composed of common components.

[@WeberAuto]

Thanks for watching

[@RedBatteryHead]

Great info as usual! It runs so smooth, even without the OE casing. That magnet trick was cool.

[@WeberAuto]

Thank you!

[@jamesbruce1183]

ingineerx has said that initially the rear performence drive units were identical but binned so the better ones were installed on the performance. Now the non performance versions have only 5 SiC transistors per phase instead of 6 saving production costs. He has a great KZbin channel.

[@WeberAuto]

Great information, thanks for sharing

[@Jaredscott89]

The binning term was used by Tesla. Just marketing hyperbole at the time.

[@casIIsac]

You are an absolute treasure and I appreciate your time and expertise.

[@WeberAuto]

Wow, thank you!

[@meganote]

I just wanted to thank you for this presentation. So much good information.

[@crumpeteer6477]

You're so clear & detailed in these videos & I thank you.

[@coldbaer7402]

Thank you for the great video, as always. I'm getting more and more interested in a hands-on experience with EV technology. Looks like I'll need to plan a trip to Utah at some point.

[@WeberAuto]

Thank you, good to hear! Thanks for watching

[@davidelliott5843]

In terms of conductor diameter copper is a better conductor than aluminium. However weight for weight aluminium is better than copper which makes it more suitable for motor rotors.

[@youdonthavetoreadthispost.5850]

I see light duty in aluminum applications electrically - and Heavy duty in copper electrically. Heavy duty in electrical terms is a trade off with carrying capacity. Heavy duty adds weight, and increases peak and operating performance. The optimum weight to horsepower/torque output is a matter of application that fits the job at hand. It varies according to requirements. The more noble the conductor - the higher you are in the electrical process. Being able to switch out conductors, and interchange them easily is electrical genius at work. The external oil pump is another tech. advance over internal. What I see is brilliance in design !

[@WeberAuto]

Thanks for the information!

[@ve2zzz]

Thank you very much !!!! I knew that for high torque gearsets, gear tooth of meshing gears had to be relative prime, but now i know the exact term: Hunting gears.

[@user-cp4jb5oz4c]

Exceptional attention to detail. Thank you so much for the tutorial. 👍

[@rotaxtwin]

When I watch these videos I wonder what kind of work these electric cars will need when they are 20, 30 yrs old. Leaking coolant lines come to mind, but the complexity is so reduced it is another world. Of course the electronics can potentially be quite complex. Love the tech!

[@WeberAuto]

Thanks for watching

[@JohnSmith-ug5ci]

Something that caught my eye right away was when you were doing the magnet demonstration holding one in your hand and on your wrist you had what looked like a watch. It is interesting if those magnets did not destroy the inner workings of that watch.

[@WeberAuto]

I wondered that same thing years ago, but it seems to no affect on the watch. It is in a stainless steel housing. Maybe it shields the electronics. Thanks for watching

[@dtemp132]

@@WeberAuto Anti-magnetic watches are a thing and there's an ISO standard too! Practically speaking, it's just another spec that wristwatch aficionados like to preen about :) en.wikipedia.org/wiki/Antimagnetic_watch

[@WeberAuto]

@@dtemp132 Wow, I had no idea. Thanks

[@ClockworksOfGL]

Looks like an Apple Watch, they should be able to handle a magnetic field just fine,

[@Johnny-xi7by]

Thanks prof. You always make understanding the electric drivetrain an easy task

[@dewiz9596]

Luv the Prime Numbers! So many applications!

[@petermolnar6017]

Strong performance, both from Tesla Design and Professor Kelly (later one as always)!

[@WeberAuto]

Thank you very much!

[@CheesePuffJay]

Awesome! Another excellent video from Professor Kelly that I'll watch many, many times. You are an excellent communicator and a master explainer. I hope someday you'll do a Hyundai Kona Electric teardown like the Chevrolet Bolt one. Thanks Professor!

[@WeberAuto]

Thanks for the suggestion!

[@michalfoksa3698]

I am always impressed by level of details and quality of your content. Thank you very much!

[@WeberAuto]

Thank you very much!

[@hyp36rmax]

This is awesome, thanks for sharing. Helps understand the front and rear drive motors.

[@OkinSold]

Can’t wait to watch!!

[@WeberAuto]

Thank you

[@americanhindi]

Good video! Happy Independence Day professor. You and Sandy should have a collaborative interview if possible.

[@WeberAuto]

Thank you, Happy independence day to you too.

[@brianmiglionico5835]

Amazing video, perfect detail and information. Wish I had you when I was in Automotive Mechanics School 😅. Great Job. I definitely understamd A LOT more now!

[@bekanadiradze9668]

What a beautiful setup of differential

[@otm646]

Do you know if the inverter units are can bus VIN locked? Seems like a nice and serviceable assembly. Plus as always we are looking for features which make swapping drive units easier into other platforms

[@WeberAuto]

I do not know. I do know there is a guy in Canada that reprograms them for custom cars. ingenext.ca/ Thanks for watching

[@Bonjevalien]

Funny.. experts from every walk of life always find something in a Tesla that surprises and makes em laugh, i.e. same exact parts for front and rear drives

[@WeberAuto]

LOL, it was surprising because I have never seen that before in my 30 years of teaching

[@MrAchilles113]

This guy is awesome, very articulate, explains everything very clearly. Really enjoyed and learned quite a bit!

[@WeberAuto]

Glad you enjoyed it! Thanks for watching

[@kentslocum]

This is a fantastic video; thank you very much! I must confess I didn't know that Teslas needed coolant; I guess that shows how little I know about electric vehicles!

[@rolfruisinger6809]

Very interesting! It’s helpful not to have any background music torture my brain!

[@WeberAuto]

Thank you

[@alsanchez5038]

Imagine what a miracle the combustion engine was and how to teach this to someone who worked with horses.

[@WeberAuto]

True! Thanks for watching

[@restfulplace3273]

Excellent detail and breakdown. This is high quality trade school teaching. Not a theoretical university professor. The professor labelling jars me.

[@elzouabi9680]

First time watching a great car youtuber like you, definetly not my last time. And you're already my favorite youtuber! Thanks for such a great video

[@WeberAuto]

Thank you very much!

[@TheScarnak]

Incredible stuff, how does the modularity of these motors compare to that of the other EVs out there like the ID4 or the Mach-e? Do they have modular components like this at all?

[@charlesball6519]

Motor, not engine.

[@youdonthavetoreadthispost.5850]

These technologies usually start with a number of entries. The best of them survive and improve. The rest become casualties of the better or worse equation, and the fittest survive. It's been that way since technology arrived.

[@youdonthavetoreadthispost.5850]

@@charlesball6519 Correct sir. No combustion. This tech doesn't need atmosphere to work.

[@WeberAuto]

I have not seen any other modular motors yet. The Mach-e has two different motors from two different manufacturers. Borg-warner in the rear and GKN in the front. Thanks for watching

[@brianb-p6586]

@@charlesball6519 Actually, both "motor" and "engine" are technically correct for an electric motor, and both are technically correct for an internal combustion engine. Normal usage for an electric motor is only "motor", and for an internal combustion engine is usually (but far from always) "engine". Don't believe me? Just check dictionary definitions...

[@TechScottBrown]

Thank you Professor for taking the time to detail the basics of the drive units. What oil/filter change interval would you recommend on these (if any)? I have the performance version M3 and have yet to “track” the vehicle but plan to someday. When in track mode, the display screen is pretty cool as it provides an interesting visual heat map of the of the battery and the drive units and will log various performance metrics to the end user’s thumb drive, cool stuff! This video was definitely NOT a waste of my time, thanks again!

[@WeberAuto]

Thank you Scott! Tesla has no recommended fluid change interval and they do not offer the ATF-9 fluid for sale either. I have tried to find a source for it and cannot. it appears to be a high quality full synthetic PAO based fluid. In a sealed housing, it should last a very long time. But of course anything that causes it to run hotter than normal will shorten its lifespan. I suspect it will last 150k miles like any good quality OEM ATF. Thanks for watching

[@TechScottBrown]

@@WeberAuto Thanks for the intel John, much appreciated and I hope you and your family have a wonderful 4th!

[@MarkTheTechno]

Recently found your channel and I really appreciate you sharing with everyone!

[@WeberAuto]

You are so welcome!

[@luckiuable]

Superb video. From technical pov and also from language pov. It is very easy to understand.

[@jaybird7534]

Metal nearby and in contact with the PMM would tend to become magnetized wouldn't it?

[@WeberAuto]

Yes it would. Thanks for watching

[@Stefan_Dahn]

Only if it is able to get magnetized, like iron. Aluminum, copper etc. does not.

[@rwess]

So cool! Thanks. (I have a 3. Never seen any of this. Now I know!)

[@WeberAuto]

Awesome! Thanks for watching

[@cfomusic73]

Great video. I was a Mitsubishi/Hyundai tech for 28 years. Tesla vehicles are very interesting and wondered how the design was for the electric motors. I can't believe how small they are but yet so powerful. Great video. Thank you

[@WeberAuto]

Thank you very much

[@LEO-qw6lz]

Great Video, well demonstrated and explained

[@honestjohn6222]

Will they last high mileage, and what will wear out also will they be expensive to repair in the future, cheers

[@olimax0707]

Less complicated than ICE less parts = they will last longer ad will be cheaper to replace. the only thing for the moment is that ice car still have the volume discount so parts seams cheaper but once EV are wide spread it will be at less 3 times cheaper for everything

[@WeberAuto]

They are designed for a million miles. Thanks for watching,

[@brianb-p6586]

The gears and bearings of manual transmissions normally outlast the car, and that's what you see in this transmission - as long as the oil supply works, they'll last until the car is scrapped because of collision damage or other problems. The motor components are even more reliable than the gears. The most likely parts to fail are the oil pump and the inverter.

[@explorer47422]

The motors are smaller than I thought they would be

[@The333halfofevil]

Same

[@youdonthavetoreadthispost.5850]

That's 'Compact E-Motor Technology' - It can be expanded, or compressed to suit application. Micro-electric - all the way to Macro. When you get to Hi-voltage 3 phase powered electric motors you're usually in factories with heavy duty applications. This tech is capable of putting 19,000 rpms to work at the wheels at 9.3 to one using 3 phase technology - to every wheel, propeller, or drive train, in a compact design at lower than conventional weight. That means - lawn mowers, outboards, jet ski's, cars -trucks - and arrow planes with high speed props, super serious motorcycles, flying cars - you name it ! The battery is the nut-never-cracked before, and it's revolutionary in designs at the moment. Musk is becoming the big dog, and he's way ahead in the race.

[@WeberAuto]

Thanks for watching

[@brianb-p6586]

Motor size depends mostly on the torque which is needs to produce. Rotating shaft power is torque multiplied by speed, so if a motor can run faster it can be smaller for the same power (less torque but higher speed to get the same power). Compared to other EVs, this is a relatively fast-turning motor.

[@MikeStreeterPhotographer]

This was a fantastic learning experience. Thank you.

[@rumingjiang69]

Very nice introduction. Thank you for the video!

[@BluRamzyGaming]

He said "Oil Filter" and I realize that I had completely forgot he was talking about a car. Especially after seeing a circuit board lol.

[@youdonthavetoreadthispost.5850]

External oil filter, pump, and heat exchanger - nice !

[@WeberAuto]

Thanks for watching

[@Aaaaaaaaaaaaaamin]

Aluminum filled rotors are less efficient but less expensive and easier to make.

[@LoanwordEggcorn]

Should be much easier to make. Copper is very difficult to machine compared to Aluminum.

[@Aaaaaaaaaaaaaamin]

@@LoanwordEggcorn indeed. They are either machined then inserted in the rotor block or directly injected by molten metal into the block. Copper injection gives lots of imperfections because of its shrinkage so having good quality product requires a very intricate process. Thus the high cost and high investment. Usually the choice of induction motors is done to avoid relying on chinese magnet raw material.

[@LoanwordEggcorn]

@@Aaaaaaaaaaaaaamin Permanent magnet motors can definitely be more efficient, especially Tesla's unusual permanent magnet reluctance design, but induction motors use much simpler resources. Induction motors are mostly Copper or Aluminum and some steel, some insulation, etc. Permanent magnets use significant rare earth elements.

[@LoanwordEggcorn]

@@CW-xh8uw Yes, both can be efficient in different ways.

[@WeberAuto]

Thanks for watching

[@hectorcabral7948]

Great way of breaking it down on detail.. thank you

[@MrPropanePete]

Really interesting, great display with the V blocks. I'm catching up with previous videos as well

[@dewiz9596]

Same this, same that. . . just ONE of the reasons I’m invested in Tesla

[@WeberAuto]

Awesome! Thanks for watching

[@jimgoff1170]

As an auto tech since 1982, I have seen a lot of change, but this technology is far superior in terms of performance and reliability. I still hear a lot of grumbling about electric not being better from many people, but in my opinion the only thing better about piston engines is the “cool” noises they make. Within the next few decades, piston engines will be only for museums and displays.

[@Mark_conor]

i doubt it but we will see, you must be close to retirement i’m fresh into this industry 10 years in so its a bit worry some that the repair industry may die off 😬

[@michelangelobuonarroti916]

@@Mark_conor Industries come and go. That's part of capitalism. That's why learning and training throughout life is important. No doubt that the affects of the automobile on the horse based transportation industries were huge.

[@GrandPrix46]

Another thing better about piston engines is the fact they can keep running when parts fail. If anything fails in this electric system, you're dead in the water. It also won't be cheap to repair, and definitely not easy (probably impossible) for the DIY'er to diagnose. Imagine the hv battery in your model s takes a shit, and the repair bill is more than a brand new Corolla. We got a LONG way to go before the ICE is a "museum piece".

[@Mark_conor]

@@GrandPrix46 DIYers are fuck 😂 just inspected a Tesla that that had a leaking oil pump. customer had no idea i think repair shops will definitely get cleaner over time.

[@jimgoff1170]

@@GrandPrix46 have you seen the prices for repairs on modern cars? These batteries have been around for years and it’s very rare to see them just take a shit. It’s just like the wear on an engine, they lose some performance but keep running. I work on mostly transmissions, drivetrain. The transmission in a hybrid, or electric vehicle is so much simpler than in an ice application. Not nearly as many things to fail. As far as diagnosis, there’s just as much on an ice as an electric that the average person cannot really do. There’s just as much electronics and far more parts to fail.

[@seanburke342]

Big thank you - I’ve watched hundreds of KZbin videos but this one gives you everything you need and more 👍

[@WeberAuto]

Great to hear! Thanks for watching!

[@san080890]

Thanks for the Video John after a long time but as always knowledgeable. Waiting for Next 1.

[@WeberAuto]

Thanks for being a long time supporter!

[@aaronweatherson4379]

Those motors are physically not much larger than my table saw motor...!

[@WeberAuto]

They are incredible. Thanks for watching

[@dtemp132]

It would be good to hear from a motor expert why this might be the case but I'll take a stab at it: - table saw motor is air-cooled (not oil/coolant cooled) so it has to be larger per unit power to remain cooler (air cooling isn't as good) - three-phase motors will be more power dense than single-phase motors - designing power-dense motors is expensive, and your table saw doesn't have density requirements, so it was cheaper to make it larger

[@thebigmacd]

@@dtemp132 the main reason is a table saw motor would blow apart long before it reached 19,000 rpm. Even three-phase industrial motors are gigantic compared to Tesla motors for the same power output, because they usually spin at 1,800 rpm or slower.

[@stevenhill3136]

What a great time to be alive in this new electric age...electric motors today only at the beginning that dwarfs gas cars at this early stage...my god what lies ahead

[@WeberAuto]

Thanks for watching

[@Mark_conor]

i mean in a sense the motors are not new, and i believe may have peaked already. Battery tech is what really will change in the future all they can do is just find ways to squeeze more than two motors on one car to make em faster. just my opinion.

[@alanmay7929]

@@Mark_conor and rare earths are still used in those electric motors, but vw doesn't use rare earths on their motors fortunately.

[@alanmay7929]

Dwarf gas cars?! Uhm nope, my toyota hilux still has 1000 miles of range and I can just buy spare fuel to go overlanding wherever I want no stress.

[@stevenhill3136]

@@alanmay7929 Electric cars dwarf gas cars in terms of performance. Your needing to drive in the outback somewhere obviously isn't most consumers needs. Keep your irrelevant gas junk as long as you want LOL

[@shawnmulberry774]

07:18 making the magnet flip in your hand. Awesome demonstration.

[@maxr2469]

Sir, your videos are really awesome! It remains me my mechanic courses when I was in engineering school.

[@WeberAuto]

Thank you!

[@Mabeylater293]

So no spark plugs that need changing, no head gasket to blow, no leaks from the valve cover gasket, no alternator to go out, no starter that’s worn out, no valves that need adjusting, no transmission that needs rebuilding, no carbon build up, no oil change to worry about, AND NO GAS?????????????? SIGN ME UP TESLA!!!!!!!!!

[@GrandPrix46]

Good luck going down to your local auto parts store and getting a replacement part for your Tesla and fixing it in an afternoon for $150, though. In fact, good luck getting a replacement part PERIOD, even from Tesla itself. Engineering Explained couldn't even get a set of wheels for his, lmao. I like electric cars as much as anybody, bought 2 Volts less than a year ago, but let's not act like there aren't any downsides to them.

[@Mabeylater293]

@@GrandPrix46 a problem that solves itself with time and adoption. Also the volt is a hybrid if I’m not mistaken.

[@GrandPrix46]

@@Mabeylater293 We'll find out eventually, I suppose. A Prius is a hybrid, a Volt is an extended range electric vehicle.

[@Mabeylater293]

@@GrandPrix46 according to this video, the Volt is a hybrid kzbin.info/www/bejne/ioS4mIqMYpaFntk

[@TheAnnoyingBoss]

Your blind ignorance is what's going to be a big problem for ya buddy. Yeah it's more simple in some ways but they're more complex than ever in others bro so you're not exactly buying some easy to own cheap to take care of machine. Even new gas cars don't cost much to own the first several years. It's once you need to start replacing seals or batteries, sensors and computers where you'll realised youve still fucked yourself financially

[@sparkfire1223]

Thanks for this video! Love the passion around this and the joy you showed with this!

[@WeberAuto]

Thanks for watching

[@charleshoward1475]

Nice to view the drive train from one of these models. I did think the bearings throughout could have been bigger, especially that one sitting upon the end of the rotor. Many thanks indeed. I appreciate the insight here.

[@surferdude4487]

The bearing on the non-output end of the rotor is under almost no load. All it has to do is keep the rotor centred.

[@VenkateshmurthyVK]

you have made complex mechanism appear so simple. Thank you Sir.

[@WeberAuto]

Thanks for watching

[@philipquinlan1045]

Thanks John great presentation. Great detail and explanation of the differences in the front and rear motors that I did not appreciate. I guess it's an evolving technology and there is more to discover in future models.

[@WeberAuto]

Glad you enjoyed it. Yes, a lot more to discover in the future.

[@MayurShinde01]

Really nice to see your work everytime...! Thank you Master.

[@WeberAuto]

Thank you very much!

[@davids.6671]

Great Video and great Engineering of Tesla. This looks rock solid to me. I'm always amazed about the size of those gear sets. This engineering with the common parts makes me happy. No wonder that they can pump out model3 for this price. I bet the engineer felt a little pain using different housings front an rear. I could really feel his pain.

[@WeberAuto]

You and me both! Thanks for watching

[@MasterAutoTechTraining]

Thank you for sharing this content about the modular components and design of the electric motors. Thank you again about your details.