Understanding the Tesla Model S Performance Motor
46:32
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Reddit
Join me for a deep dive into the details of the 18,000 RPM performance rear motor and drive unit from a 2015-2016 Tesla Model S P90D. This drive unit is similar to the one used in the 2017-2020 P100D. The video is divided into four sections showing: 1. The motor and gears. 2. The high-performance bearings. 3. The lubrication system. and 4. The cooling system.
CORRECTIONS:
Thank you to everyone for catching my errors. There are always errors ;)
1. The Nissan Leaf ring gear is held on with 8 bolts, not 6.
2. The fluid in this drive unit is Dexron 6 transmission fluid.
3. Induction motor rotors do not have poles, just the stator. The 60 slot stator has four poles.
4. Silicon Nitride is a ceramic material.
Timeline:
0:00 Start
0:10 Introduction
1:35 Gearbox housing
2:10 Video Section 1 - Gears and Motor Rotor
2:45 The giant differential ring gear with 16-bolts!
4:20 The giant differential case bearings
4:50 The differential case speed at 250 km/h (155 mph) = 1841 RPM
5:15 MUST SEE Comparing the Tesla differential to others from a Chevrolet Bolt EV and Nissan Leaf EV
5:40 A Chevrolet Bolt EV differential ring gear with 12-bolts.
6:10 A Nissan Leaf EV differential ring gear with 8-bolts!
7:30 The Counter Shaft (Jack Shaft) with 25 pinion gear teeth. 78/25 = 3.12:1 Gear ratio from countershaft to the differential case
8:50 The countershaft speed at 250 km/h (155 mph) = 5743 RPM
9:30 The motor shaft with 25 teeth drives 78 teeth on the countershaft for another gear reduction of 78/25 = 3.12:1
10:08 The motor shaft speed at 250 km/h (155 mph) = 17,919 RPM
11:20 See all three gears in the reduction gearbox with an overall gear reduction of (78/25) x (78/25) = 9.7344:1
12:05 MUST SEE The AC Induction Motor Rotor with 74 bars
13:25 Motor specifications for power, torque, and gear ratio
15:00 MUST SEE Ceramic Bearings (Silicon Nitride) on the rotor from the SKF Group (skf.com)
16:22 MUST SEE Close up view of silicon nitride bearing
18:20 The motor rotor speed sensor reluctor wheel (tone ring)
19:22 Must SEE The rotor installed on the drive gear and the functioning gearbox
20:18 Video Section 2 - Specialized Bearings
21:21 The 60 slot four-pole stator and housing
23:05 The oil pump and how it is overdriven by the differential ring gear 23/78 = 0.2948:1 gear ratio (3.339 times faster than the ring gear)
23:55 MUST SEE The function of the oil pump (it may surprise you)
26:27 Motor shaft bearing reference speed and limiting speeds
27:30 How to run bearings at higher speeds than their limiting speeds
29:54 Video Section 3 - Lubrication
30:25 Drain and fill plug locations
30:50 Gearbox vent and inverter vents
31:05 Sport model label
31:39 MUST SEE Four different sealed areas in the drive unit
32:46 Video Section 4 - Cooling System
33:30 MUST SEE The coolant inlet port and the two paths coolant takes
33:53 Up for rotor cooling and gearbox cooling
35:03 Down for stator and inverter cooling
36:05 Coolant from the rotor moves to the gearbox heat exchanger and the outlet port
37:25 Stator temperature sensors
38:10 Coolant from the stator to the inverter coolant passages
38:28 Stator coolant temperature sensor
38:35 MUST SEE Insulated-Gate Bi-Polar Transistor (IGBT) module coolant passages and flow through gearbox passages
40:34 Inverter coolant outlet temperature sensor
40:45 The gearbox oil-to-coolant heat exchanger
41:38 Coolant outlet port to coolant pump and on-board charger module under the back seat.
41:55 Drive unit cooling system summary
43:04 IGBT inverter modules installed and inverter cover
43:40 High voltage battery cable connections and low voltage connections at the inverter
44:35 Video summary
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 for more information.
Weber State University (WSU) - Automotive Technology Department - Advanced Vehicles Lab. A technical description and demonstration of the Tesla P90D Rear Drive Unit (RDU).
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_Kelly.html
Visit my other youtube channel irbin.info to see the amazing NVH app for vibration diagnosis!
Please consider a donation to the Department of Automotive Technology at Weber State University here: advancement.weber.edu/Automotive

نظر
  • rkan2
    rkan2

    Isn't the differential gear the same in all the Model S driveunits? Only difference with the Performance model being the inverter?

  • vaughnbay
    vaughnbay

    Some people are just naturals.....you're one of them John. Great Job!

  • Steven Caskey
    Steven Caskey

    Lubricants better see an Amsoil dealer.

  • Grabasandwich
    Grabasandwich

    Your qualifications and credentials are incredible! Thanks for making these videos

  • Michael R
    Michael R

    Hey what type label maker do you use? I love the professional look of the parts you used.

  • Errol Guard
    Errol Guard

    Excellent Thank You

    • WeberAuto
      WeberAuto

      Glad you liked it!

  • paul paulzadeh
    paul paulzadeh

    it was better to put , one motor / wheel , no need for differential gearbox , control everything with software , better balance for whole car .

    • WeberAuto
      WeberAuto

      Thanks for watching

  • paul paulzadeh
    paul paulzadeh

    SKF = MADE IN SWEDEN

    • WeberAuto
      WeberAuto

      Good bearings!

  • MARILYNANDERSON88
    MARILYNANDERSON88

    I now realize the materials advancements deployed to make ZZZZZTesla so hot!

    • WeberAuto
      WeberAuto

      Thanks for watching

  • paul paulzadeh
    paul paulzadeh

    my oral-B tooth brush has 48800 RPM , even better then telsa car motor

    • WeberAuto
      WeberAuto

      LOL, Thanks for that

  • GLEN Dooer
    GLEN Dooer

    More torque than a room full of women.

    • WeberAuto
      WeberAuto

      Trouble maker!

  • Jameel Ja
    Jameel Ja

    The amazing thing is, the old V8 and V10 F1 cars use to rev to 18,000 RPMs. Think about the forces on the valves, springs, pistons, conn-rods.

    • WeberAuto
      WeberAuto

      Amazing technology

  • Kasun Chamara
    Kasun Chamara

    Amazing Video.... Hope To See Tesla Latest Induction Drive In 2020 Model S Or X

    • WeberAuto
      WeberAuto

      I hope so too

  • Bjorgulfur Thorsteinsson
    Bjorgulfur Thorsteinsson

    Amazing job....

    • WeberAuto
      WeberAuto

      Thank you so much 😀

  • Andy Man
    Andy Man

    09:30 *"uh, the next shaft we have,,, i don't know its' exact name, i just call it the motor shaft"* that would be the 'input shaft'

    • WeberAuto
      WeberAuto

      That makes sense! Thanks

  • Me 2
    Me 2

    Damn thats Green manufacturing right there. Lol so hypocritical

    • WeberAuto
      WeberAuto

      Thanks for watching

  • Ronald Garrison
    Ronald Garrison

    That looks like an AMAZINGLY small size for any device handling 400 kW.

    • WeberAuto
      WeberAuto

      Yes it does. Thanks for watching

  • Conrad Fuller
    Conrad Fuller

    Great detail and depth, very interesting, thank you.

    • WeberAuto
      WeberAuto

      Glad you liked it!

  • Tommy
    Tommy

    Another excellent and thorough video from you. Keep up the good work sir.

    • WeberAuto
      WeberAuto

      Thank you

  • Ian Damon
    Ian Damon

    Love the thoroughness of the explanation. Also love the Mr Peabody reference to the Wayback Machine...

    • WeberAuto
      WeberAuto

      Thank you!

  • Star ful
    Star ful

    I appreciate your detailed explanation of drive gears, bearings and awesome coolings sysytem on this motor/transaxle. Neat to see how heat is removed. I wonder if the idea to use rocket fuel as coolant in Space X rocket engine nozzle came from the stator surrounded cooling system in this motor. Is this type of thin casing cooling used elsewhere in machines?

    • WeberAuto
      WeberAuto

      Thank you very much

  • LMF5000
    LMF5000

    It's nice of Tesla to put labels on everything so you know what it is. Lol

    • WeberAuto
      WeberAuto

      That is what I was thinking!

  • Georg Antonischki
    Georg Antonischki

    Great video! Two questions, where is power and torque measured? Is this input power? I think I remember, that electrical motor power rating was measured in electrical input power, which would be highest if you clamp the rotator and give it full beans. With torque, I have no idea, as I am an radio frequency engineer only, but the conditions would be quite helpful for an understanding

  • Ian Mangham
    Ian Mangham

    Slow down man slow down,you'll blow the trans-axle,I'm Hudson he's Hicks.

    • WeberAuto
      WeberAuto

      LOL! You can speed up the video if you want to

  • Ian Mangham
    Ian Mangham

    Awesome footage

    • WeberAuto
      WeberAuto

      Glad you enjoyed it

  • RagazzoMafioso
    RagazzoMafioso

    Nissan Leaf = 8 bolts.

    • WeberAuto
      WeberAuto

      Yes, I was wrong

  • Dave Seeger
    Dave Seeger

    Are you planning to do the same for the Model 3 motor? I'm curious about the differences between the PMSR Model 3 Performance motor and the Induction Model S P90 motor.

    • WeberAuto
      WeberAuto

      Yes I am. Both the rear and front motors are sitting right here waiting for me to get to them. I am finishing the Model S with two more videos in the next week and then the Model 3. Thanks for watching

  • Con el Val
    Con el Val

    It was an absolute delight to listen to you explaining the functionality of the rear motor and drive unit. Thank you.

    • WeberAuto
      WeberAuto

      Glad you enjoyed it!

  • usertogo
    usertogo

    @6:15 counting 8 bolts - how many times did you look?

    • WeberAuto
      WeberAuto

      LOL, I knew it was 8, but said 6 in the video. I'm getting old ;)

  • ABA SA
    ABA SA

    who prints your labels :D

    • WeberAuto
      WeberAuto

      I do, and it takes forever!

  • Bendri Batti
    Bendri Batti

    Thanks Professor. It is fascinating!!!

    • WeberAuto
      WeberAuto

      Glad you enjoyed it

  • Randall Hash
    Randall Hash

    I can appreciate all the design and engineering that went into this EV system...This is such a wonderful instructional video...I own a 2020 Model S and this is such a delight to understand the workings of the systems...Also, it is enlightening to see all the positive comments...Keep up the good work..

    • WeberAuto
      WeberAuto

      Thank you very much

  • r b
    r b

    I’m a motor / ASD guy. This is a brilliant explanation! Kudos.

    • WeberAuto
      WeberAuto

      Thank you very much!

  • Andrew T
    Andrew T

    Great video. Looking forward to the M3. My only question is on the specifics of the rotor cooling. How does that cooling shaft interface with the rotor at such a high speed? What kind of interface material is that? And what is the path of the fluid through the rotor? I wonder how coolant runs through when spinning at such high speed.

    • WeberAuto
      WeberAuto

      There is a seal next to that ceramic bearing. The seal must be a remarkable design to hold up at those high rpms

  • Mr Ian Tchernegovski
    Mr Ian Tchernegovski

    open diff lol do they have a lsd option at all ?

    • WeberAuto
      WeberAuto

      No, they use the brakes to control wheel slip

  • Tang William
    Tang William

    Nice video perhaps can you provide the skf ball bearing name or designation to me please ? Should be appear on the bearing above itself and both side had it own part name.@16:47

    • WeberAuto
      WeberAuto

      Thanks, coming this weekend

    • Tang William
      Tang William

      @WeberAuto thx i will be buy it for a normal testing. Nice with the video which provide the teeth numbers and more detail on it. Expecting your next video.

    • WeberAuto
      WeberAuto

      Thanks. BB1-3793

  • tomdickharryjane
    tomdickharryjane

    @23:08 the oil pump uses a plastic gear. I wonder if that will be the failure point? Any manufacturer that machine a metallic gear as a replacement upgrade?

    • WeberAuto
      WeberAuto

      It is actually a nylon gear. I haven't heard of failures with it. IF it failed, those two high speed bearings would fail prematurely.

  • tomdickharryjane
    tomdickharryjane

    A21:40 the locating bearings as they are called here take up the axial thrust. The two forces on the rotor are radial and axial. Fairly self explanatory as to what direction they are in. At least these are the terms I have always heard, radial and axial. So for example, needle bearings handle high radial loads, no axial whereas a thrust bearing handles all axial, no radial. Ball and spherical handle both, with ball usually better at radial, some axial, spherical good at both, and depending on the design can emphasize either.

    • WeberAuto
      WeberAuto

      Great information, thank you

  • kb25j
    kb25j

    Awesome video, thanks!

    • WeberAuto
      WeberAuto

      You are welcome

  • Anthony Williams
    Anthony Williams

    We rebuild these Tesla “Large Drive Units” every single day (on any given day, there are 10-15 Tesla powered cars at our shop). As a pioneer in this field, we had to develop lots of tools and techniques to make this all work. I’ll venture to say that nobody (outside of Tesla) has as much experience (and bigger piles of destroyed motors)!!! QC Charge Vista, California USA

    • Gabe H
      Gabe H

      Ditto Andrew reply^^^ what are the biggest or largest or most seen failure points that you come across and what can be done to rectify it?

    • Andrew T
      Andrew T

      Interesting. I know there's quite a few Teslas out there now, but I'm surprised how often you're rebuilding these already. What is the largest failure point or cause of failure for these drive units?

    • WeberAuto
      WeberAuto

      Thanks for the information. It is good to hear you are offering that service at your shop.

  • Al Williams
    Al Williams

    Thank you sir, very interesting. on my BMW motorbike the shaft from the motor to transmission is called the "input shaft" input>transmission. Thanks again from oz.

    • WeberAuto
      WeberAuto

      That makes perfect sense. Thanks

  • J L
    J L

    Thank you so much for the video. Engineering is key and I am impressed. Cheers, John L. in Fairlawn Virginia USA

    • WeberAuto
      WeberAuto

      Thank you

  • ShaunieDale
    ShaunieDale

    I find it surprising that the rotor coolant travels downwards as it cools the transmission housing. The hole at the top is small so the flow must be quite low. Must be difficult to bleed and avoid airlocks. Is it possible the flow goes the other way?

    • WeberAuto
      WeberAuto

      No, the direction is correct. These systems are vacuum filled, there is no need to bleed air because it is removed prior to pulling the coolant back in. Thanks for watching

  • Martin Stensvehagen
    Martin Stensvehagen

    Supert interesting. I will watch any of the upcoming videos you mentioned

    • WeberAuto
      WeberAuto

      Awesome, thank you!

  • Arne Servatius
    Arne Servatius

    Prof. What is cost of hardening car from magnetic pulse be nice to leave town if nukes on the way🤓

    • WeberAuto
      WeberAuto

      LOL! I do not know

  • Joni English
    Joni English

    Well Done TESLA !!!!!!!!!!!!! 13 Years AHEAD of ALL AUTO Makers - HEAD STUCK in the SAND !!!!!!!! 2008 Tesla Roadster ,Release 1996 GM EV-1 1913 Thomas Edison Electric Car i have a 82v Snapper String Trimmer Works Amazing - Lots of Power and Quick to Charge

    • WeberAuto
      WeberAuto

      Thanks for watching

  • Leon Johnson
    Leon Johnson

    Thank you for this explanation at this detailed level. Awesome information!!

    • WeberAuto
      WeberAuto

      Glad you enjoyed it!

  • John A
    John A

    370kw =. 496.178 hp and NOT 503 necessarily. Except if you explicitly state the kind of HP.

    • WeberAuto
      WeberAuto

      You are correct for imperial horsepower, I should have double checked. Apparently that spec is in metric horsepower. Thanks for the feedback

  • Need2connect
    Need2connect

    I absolutely hate Teslas. I shouldnt be here

    • WeberAuto
      WeberAuto

      LOL, Thanks for being here!

  • Gary Morrison
    Gary Morrison

    Way-cool video! Very informative, and intriguing. Thanks! I’m still watching, but 60% through the video, I’m not sure what to make of those ... 6, I think ... comparatively wimpy bolts protruding from the differential’s carrier, blocking access to the bearing to the half-shaft inside CV-joint housing.

    • WeberAuto
      WeberAuto

      Thanks for watching!

  • maxxedwoodz
    maxxedwoodz

    Thanks for the info. So much great info on IRbin!

    • WeberAuto
      WeberAuto

      Glad it was helpful!

  • Cesar Aguilar
    Cesar Aguilar

    But they wouldn't let me disassemble that one! 🙈🤣😂😂

    • WeberAuto
      WeberAuto

      LOL!

  • Juju-Lips Talia
    Juju-Lips Talia

    Incredible video. Love it. Thank you for your time and efforts in educating us!!!

    • WeberAuto
      WeberAuto

      My pleasure!

  • Dinal Abay
    Dinal Abay

    Where are the electrical connections to the rotor itself? I see can power going into the control electronics, but not the outputs.

    • WeberAuto
      WeberAuto

      There are none. It uses electromagnetic induction for power from the stator

  • dxtrty
    dxtrty

    Xlnt !

    • WeberAuto
      WeberAuto

      Thank you

  • Jon Pritzker
    Jon Pritzker

    I was about to stop the video because I was getting bored, but you interrupted me with the end. I had watched the whole thing! I laughed bc I have no personal experience building cars. Gosh I wanna be a mechanic. Awesome video, subscription earned!

    • WeberAuto
      WeberAuto

      Thank you very much

  • Doug Bourdo
    Doug Bourdo

    Man, I want to test drive a Tesla now !!!!

    • WeberAuto
      WeberAuto

      LOL, they are fun

  • ed markham
    ed markham

    What a wonderful job of communication you do. The details you explain are a lot easier to understand.. You are an excellent teacher.

    • WeberAuto
      WeberAuto

      Thank you so much!

  • tomdickharryjane
    tomdickharryjane

    According to the motor equations, peak torque is made at 5,650 RPM. That is derived using the basic motor equation P=(T x N) / 5250. Converting to N = (P x 5250)/T, using the peak numbers, the speed, N, is calculated as 5,630 RPM. Then, using the basic motor equation converted to find torque, T=(P x 5250)/N, using the ludicrous power in the equation gives ludicrous torque to be 496 lb-ft. If anybody knows differently, *PLEASE* explain where the mistake is in the explanation. Thanks!

    • WeberAuto
      WeberAuto

      The 503 hp works perfectly with the 469 ft*lbf of torque in normal mode. In Ludicrous mode the 532 hp works out to be the 496 ft*lbf of torque you calculated. I need to add a new label with Ludicrous torque of 496 ft*lbf. Thank you!

  • John's Marine Solutions
    John's Marine Solutions

    Thanks for an excellent presentation on the Tesla Motor Drive Unit.

    • WeberAuto
      WeberAuto

      You are welcome. Thanks for watching

  • sam maimas
    sam maimas

    Thanks professor, I appreciate your explanation of the workings of an (tesla) EV motor. Even Munro and assoc. did not give this sort of in depth analysis (unless you pay for it). Thanks again sir.

    • WeberAuto
      WeberAuto

      Thank you very much

  • Chad Courtney
    Chad Courtney

    Ceramic is a class of materials which includes Silicon Nitride, so a Silicon Nitride bearing is a Ceramic Bearing.

    • WeberAuto
      WeberAuto

      Yes, Thank you. I got that wrong

  • Clive Green
    Clive Green

    Great description, thankyou

    • WeberAuto
      WeberAuto

      Thank you

  • MrKillswitch88
    MrKillswitch88

    Look up Project Arizonian if you want to see some crazy engineering, basically it was a CIA operation to recover a sunken Soviet Submarine.

    • WeberAuto
      WeberAuto

      Thanks

  • neil mchardy
    neil mchardy

    That pipe through the motor we always called a sparge pipe when filled to rolling mills for coolant.

    • WeberAuto
      WeberAuto

      Excellent! Thank you!

  • Maxx
    Maxx

    They are a stupid, impersonal motor that has no soul and I'll be damned if I ever drive an electric car. If my hearse is electric, I'll roll over in my coffin. Horrible, horrible electric cars.

    • WeberAuto
      WeberAuto

      Thanks for your feedback

  • Zaliah
    Zaliah

    this is kinda click bait a tesla model s performance isnt the same as a P100D nor a 2016 model any way you cant buy none from tesla any more

    • WeberAuto
      WeberAuto

      Thanks for your feedback. As stated in the video description, It is a drive unit from a 2016 Model S P90D. The "P" in P90D stands for Performance.

  • Juan Castle
    Juan Castle

    Great detailed discription of the p90 drive motor boss!

    • WeberAuto
      WeberAuto

      Thank you! 👍

  • Limabean Living
    Limabean Living

    Excellent Quality

    • WeberAuto
      WeberAuto

      Glad you like it

  • Jake Rosendahl
    Jake Rosendahl

    I didn't find anything about the 2021 Model S bearings, but the Plaid version mentions carbon sleeved rotors.

    • WeberAuto
      WeberAuto

      I suspect we won't know anything until someone takes one apart.

  • Roger DeBats
    Roger DeBats

    Do we have 51 states now or did Nebraska or one of those other western states switch up their name to Weber?

    • WeberAuto
      WeberAuto

      LOL!

  • iamthemoss
    iamthemoss

    You guys have fantastic videos. I am sure you inspire lots of future mechanics and engineers.

    • WeberAuto
      WeberAuto

      Thank you very much!

  • zynzy4u
    zynzy4u

    You always provide great presentations! Thank you for that. It is most common for high speed bearings to be lubricated by polyolester based synthetic oils. A typical example is Phillips 66 Syndustrial Turbine Oil. These type lubricants offer better viscosity characteristics, lower coefficient of friction, and higher film strength than mineral oil based lubricants making polyolester lubricants the primary choice for very high speed, high load applications. It is also important to note double reduction helical gears are not known for their super efficiency especially under high loads. Elimination of the reduction gear system would be a real advantage. Anyone can research the losses caused by gear systems with those losses being significant. The bother I have with this motor is the typical design where the magnet field from the stator is perpendicular to the axis of rotor. This also requires use of ferromagnetic material for the conduction of the magnet field through the long path across the rotor and the long path around the stator from one side to the opposite side of the motor. Use of ferromagnetic materials in motors always cause losses due to the well known losses caused by changing magnetic fields within ferromagnetic materials. Motor efficiency suffers substantial from this antiquated design seldom exceeding 85%. A much better design is a pancake style motor where the magnet field is parallel to the axis of rotation. This style of motor, using five phases, can achieve 99% efficiency due in part to the elimination of the ferromagnetic material because the magnetic path can be a very short distance from stator to rotor. This design appears in the simplest form as a stator disk adjacent to a rotor disk. To increase output, stators and rotors may be stacked up like a stack of pancakes. Another advantage is the very high torque produce by this style of motor because the rotor reactive force may be designed with a long distance from the axis of rotation by design increases in motor diameter. Further advantages occur due to the lack of ferromagnetic materials and those losses and long time constants can allow this pancake design to be optimize for any RPM range without the need of gear reduction. All in all, one can expect in such a drive system as shown in this wonderful video presentation to experience an increase in efficiency of possibly as much as 50% at full load and likely 25% at low load. The big question is, "why is this antique design still even used anywhere?" Old habits are difficult to break!

    • WeberAuto
      WeberAuto

      Awesome information, thank you!

  • Mart
    Mart

    Top-notch quality video, love the level of detail. The only thing I noticed is that you sometimes seem to mix up mph and kph. Maybe try to hold one standard mph or kph (preferably metric, but whatever works for you :). )

    • WeberAuto
      WeberAuto

      Great point! Old habits are hard to break, but I am working on it. Thanks for watching.

  • Athanas
    Athanas

    Well actually i see that the ceramic ball bearings have indirect cooling through the shaft they hold on.

    • WeberAuto
      WeberAuto

      You are absolutely correct, I missed that

  • Athanas
    Athanas

    Usually the rotative part is called a rotor, could be inductive, or other, the other part is called the stator, sometimes we also can have inductive stator if the rotor is the powered part equippedd with a commutator and the coils, but that deppends of the purpose, however the both parts combined are the electrical motor.

    • WeberAuto
      WeberAuto

      Thank you for the information and thanks for watching

  • Jari Backman
    Jari Backman

    This was fantastic, and having participating in high-speed machinery design I really enjoyed the presentation of the cooling path. Many thanks!

    • WeberAuto
      WeberAuto

      Thank you very much!

  • LegendLength
    LegendLength

    they should've just used a lower kV motor, would've solved everything

    • LegendLength
      LegendLength

      @WeberAuto needing high temperature bearings etc..

    • WeberAuto
      WeberAuto

      Solved what? I do not understand

  • Kevin Michel
    Kevin Michel

    Nice comprehensive and detailed job explaining of a complex Tesla drive unit. I have a new Model Y and Tesla doesn’t require a fluid change. But after watching your video, I would think after 100k miles I would need change the lubricant or various types of fluid? What is your thought regarding that? Thanks

    • WeberAuto
      WeberAuto

      Thanks, I will talk more about that in the Model 3 motor videos coming up

  • Horatio W
    Horatio W

    As usual, very informative.

    • WeberAuto
      WeberAuto

      Thank you

  • CowLevelCrypto
    CowLevelCrypto

    Nissan Leaf has 8 bolts, not 6

    • WeberAuto
      WeberAuto

      Yes, thanks. I got that wrong

  • Ivan F
    Ivan F

    I'm sitting here trying to think of an alternate use for one of these motors... It's definitely possible to use it for something but it's not like a small block chevy engine where you can turn it into a blender if you really want. It's gonna take a lot more effort to make use of one of these. Pretty much once you remove the Tesla motor from a Tesla vehicle it's a brick. It's a damn shame as far as I'm concerned. I'd like to see more modular EVs. I dream of some day seeing a Tesla powered motorcycle (like a Boss Hoss but built out of a Model S Plaid or something).

    • WeberAuto
      WeberAuto

      There are ways to use Tesla motors in other vehicles. Thanks for your feedback

  • Poppie
    Poppie

    Just an FYI: Nissan Leaf has 8 bolts on the Ring Gear, instead of 6.

    • sam maimas
      sam maimas

      Yes I did notice that as soon as the professor said it, but I did not think it was worth mentioning this small mis speak as it was visually obvious. Also considering all the details he was explaining, he did a great job.

    • WeberAuto
      WeberAuto

      Yes, thanks. I got that wrong

  • Robert Riquelmy
    Robert Riquelmy

    And shat is an Igbo?

    • WeberAuto
      WeberAuto

      @Robert Riquelmy If you meant IGBT, Insulated-Gate Bi-Polar Transistor (IGBT). They are the transistors that control the current through the three stator windings. Sorry for not explaining that.

    • Robert Riquelmy
      Robert Riquelmy

      @WeberAuto what is an Igbo?

    • WeberAuto
      WeberAuto

      I don’t understand

  • aussieaeromodeler
    aussieaeromodeler

    very interesting video , but I'd still rather push my gas guzzler before I'd even think about driving an electric 'car'

    • WeberAuto
      WeberAuto

      Thanks, they are not for everyone.

  • Nagaraja Bhat
    Nagaraja Bhat

    Incredible Tesla engineering. And amazing video -- you got the knacks for explaining & teaching.

    • WeberAuto
      WeberAuto

      Thank you kindly!

  • Robert Harvey
    Robert Harvey

    Excellent 👍

    • WeberAuto
      WeberAuto

      Many thanks

  • superclarkey
    superclarkey

    Thank you for taking time to share this, saves me taking one apart lol

    • WeberAuto
      WeberAuto

      LOL, Glad to help!

  • Amir Zia
    Amir Zia

    great job! thanks a lot

    • WeberAuto
      WeberAuto

      Thank you!

  • Air Dad
    Air Dad

    Are you going to take apart the rotor to see what it's made out of and how?

    • WeberAuto
      WeberAuto

      Not unless I can get another one. It has 74 copper bars and shorting rings cast in iron laminations. Thanks for watching

  • A. Akram
    A. Akram

    @39:22 that is a pin-fin cold plate heat exchanger. Industry standard HE for liquid cooled power electronics. However this one is quite dense, guessing it's cuz of high current rating of this inverter. Excellent video and thanks for this deep dive :-)

    • A. Akram
      A. Akram

      @WeberAuto awesome! Can't wait! Thanks alot :)

    • WeberAuto
      WeberAuto

      @A. Akram Exact? No, but I will be showing it in another video soon

    • A. Akram
      A. Akram

      @WeberAuto hi prof. Weber. Any idea what is the EXACT geometrical/ electrical/ cooling differences ( if any) between the performance and non performance primary induction motor/inverter/gearbox in the "pre Raven" model S vehicles?

    • WeberAuto
      WeberAuto

      Thanks for the info!

  • Paul1958R
    Paul1958R

    @6:18 looks like 8 bolts to me

    • WeberAuto
      WeberAuto

      Yes, I was wrong. Thanks for watching

  • Steven l Mendez II
    Steven l Mendez II

    when it comes to performance size does matter, and so do the bearing ball......I'm dying here John.. I love you channel keep up the great work.

    • WeberAuto
      WeberAuto

      Thank you very much

  • Gacheru Mburu
    Gacheru Mburu

    Thanks for the info!

    • WeberAuto
      WeberAuto

      My pleasure

  • Mohan Sivasankaran
    Mohan Sivasankaran

    Great information.

    • WeberAuto
      WeberAuto

      Glad you think so!

  • Production Design
    Production Design

    Superb videos. Clear informative and interesting. Thank you for sharing your knowledge.

    • WeberAuto
      WeberAuto

      My pleasure!

  • Donald Jackson
    Donald Jackson

    Good explanation,very knowledgeable.

    • WeberAuto
      WeberAuto

      So nice of you

  • lpletsch
    lpletsch

    Excelente vídeo, muito bom!

    • WeberAuto
      WeberAuto

      Thank you

  • Spellitlikeitsounds
    Spellitlikeitsounds

    Cool, I want to see all the Tesla breakdowns now

    • WeberAuto
      WeberAuto

      Coming soon! Thanks

  • Lernen mit Robin
    Lernen mit Robin

    Dear Prof Kelly, nice video. Thanks for the detailed and well explained content about the tesla drivetrain. At 22:00 you say it's a 60 slot stator. Therefore it means on a three phase motor, it has 20 slots per phase, spreaded on the whole circumference. On these 20 slots, you can realize 4 poles or 2 pole pairs with so called integer slot windings or 8 poles and 4 pole pairs with fractional slot windings. This scheme is repeated for 5 times. On www.emetor.com/windings/ you can type in: Number of poles - 4 or 8 Number of slots - 60 Click on "Update". Then click on e.g the cell 60/4 to see the different winding layouts. ------ The rotor does not make the poles on an asynchronous machine. It's given by the stator. That's the reason that you can use a zylinder, tube or a coke can as a rotor ;-) At 18000 rpm, it's 300 Hz mechanical frequency and 600 Hz electrical frequency on the motor with 2 pole pairs

    • WeberAuto
      WeberAuto

      Thank you very much! I’ll check it out.

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