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 uzload.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

Fikrlar
  • Zijie Chen
    Zijie Chen

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

  • Cesar Abraham
    Cesar Abraham

    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,

  • Steven Hill
    Steven Hill

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

  • Diamond Cutter
    Diamond Cutter

    Excellent post. Very well taught.

  • Mel Clifford
    Mel Clifford

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

  • Karolis Abrutis
    Karolis Abrutis

    who the damn is disliking this video lol

    • TEAMERICA
      TEAMERICA

      Maybe someone that sees him holding up a Leaf ring gear saying and captioning that it has 6 bolts when you can clearly see at 6:20 that it has 8 bolts. Makes you wonder what other areas he is careless in accuracy.

  • trumpetmaris
    trumpetmaris

    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.

  • DanielinLaTuna
    DanielinLaTuna

    Fascinating!, thanks for sharing this interesting and informative video

  • Pedro Jane
    Pedro Jane

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

  • Marius Ni
    Marius Ni

    Great video - appreciate it! I believe the hybrid bearings are not externally lubricated because they're packed with a conductive grease, basically working as a shaft grounding device to mitigate any shaft currents induced to the rotor due to the capacitive coupling through the rotor/stator air gap at high switching frequencies. Looking forward to see more!

  • alejandro vallina collado
    alejandro vallina collado

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

  • Othoap Proto
    Othoap Proto

    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.

  • Brian Hill
    Brian Hill

    Great job enjoyed the video 👍🏻

  • Chris Braid
    Chris Braid

    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 ....

  • Pool Bal
    Pool Bal

    🌈🇺🇳27:30

  • Edward Schoenman
    Edward Schoenman

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

  • Colin Genge
    Colin Genge

    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?

    • Ash C
      Ash C

      i think because they seem comically large, but he does understand why

  • Ken Kappler
    Ken Kappler

    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????

  • John Michael S.
    John Michael S.

    thank you !

  • Vincent Piccirelli
    Vincent Piccirelli

    Great Video! thank you for the informative content!

  • George Carlson
    George Carlson

    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.

  • Rusty Wrench2
    Rusty Wrench2

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

  • McDaniel77
    McDaniel77

    Best explanation video thus far! Thank your!

    • WeberAuto
      WeberAuto

      Thank you very much

  • Johann Bach
    Johann Bach

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

    • WeberAuto
      WeberAuto

      The more bolts it has, the more torque it is designed to handle ( assuming the bolts are the same size). The comparison was meant to show the ring gear was designed to handle a tremendous amount of torque verses other EV’s that are intended to be commuter cars.

  • Graham Wallmiesterhime
    Graham Wallmiesterhime

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

    • Graham Wallmiesterhime
      Graham Wallmiesterhime

      You think? Elon Musk raced RC cars hence where he got the idea.. You think he created this on his own? 😂

    • WeberAuto
      WeberAuto

      I think induction motors have been around longer than RC buggies. Thanks for watching

  • orian cunningham
    orian cunningham

    Brilliantly informative, thanks!

    • WeberAuto
      WeberAuto

      Thank you very much

  • RF monkey
    RF monkey

    SKF "when pedigree matters and it does !"

    • WeberAuto
      WeberAuto

      Amazing bearing technology! Thanks for watching

  • eraserheads78
    eraserheads78

    How much?

    • WeberAuto
      WeberAuto

      A quantity

  • Tony S
    Tony S

    I see on the news Hyundai are about to start the most expensive recall ever ... replacing batteries because of fire risk in all ( 80,000 or more) EV's they have sold worldwide .

    • WeberAuto
      WeberAuto

      I saw that too

  • johnny zee
    johnny zee

    Put that on the list of things you can check and fix to save yourself a lot of money

    • WeberAuto
      WeberAuto

      Thanks for watching

  • Kraig Schultz - SE LLC
    Kraig Schultz - SE LLC

    Wow!!! Thank you for taking the time to figure all that out and make an excellent video showing what you learned. My respect for the engineering and the complexity of the system is great!

    • WeberAuto
      WeberAuto

      You're very welcome! Thanks for watching

  • M.
    M.

    Thank You.

    • WeberAuto
      WeberAuto

      You're welcome

  • John P
    John P

    Can't wait for tesla to start using exro's coil driver!!! And get rid of all the needed gears!!

    • WeberAuto
      WeberAuto

      Thanks for watching

  • Simon Krisztián
    Simon Krisztián

    This is gold. Thank you.

    • WeberAuto
      WeberAuto

      You're very welcome!

  • alton gifford
    alton gifford

    I`m getting dizzy.

    • WeberAuto
      WeberAuto

      Thanks for watching

  • A I
    A I

    If you appreciate 18k RPM rating of the electric motor, please take a high performance motorcycle engine apart. It is in the same ballpark of rotational speeds with more and more complex moving parts.

    • WeberAuto
      WeberAuto

      That sounds like some cool technology

  • Wayne Bartlett
    Wayne Bartlett

    This is simply the best of UZload, demystifying and inspiring. Added to superb content and presentation, audience centred post-production links for easy navigation and reference. Thank you for creating the gold standard for others to follow.

    • WeberAuto
      WeberAuto

      Thank you so much 😀

  • Zane Enaz
    Zane Enaz

    Absolutely First Class. Thank You.

    • WeberAuto
      WeberAuto

      Glad you enjoyed it!

  • David Hamlin
    David Hamlin

    Very nice job!! You are so skilled in your teaching abilities. Very competent communication skills !! Kudos !!

    • WeberAuto
      WeberAuto

      Thank you so much 😀

  • Bo McGillacutty
    Bo McGillacutty

    9.4 ratio is plenty close enough for this convo. (WELL DONE got my sub)

    • WeberAuto
      WeberAuto

      Thank you!

  • Jake Lowney
    Jake Lowney

    Makes me want a Tesla even more!

    • WeberAuto
      WeberAuto

      Thanks for watching

  • Ed Hughes
    Ed Hughes

    I am a ceramic engineer BS from UDub and SiN is a ceramic and from what I have worked with is black in color. Si3N4 (SiN) or SiC all high temp and no TEC. I am surprised the Si3N4 balls in the bearing need any lubricant. My guess is the lube is not for the SiN balls but for the Invar bearing inner and outer races.

    • WeberAuto
      WeberAuto

      Great information, thank you!

  • MrCarGuy
    MrCarGuy

    I've had people insist that the oil _never_ needs to be changed on these or the newer Model 3/Y design, especially on the EV forums. They don't know what they're talking about, to put it mildly. Oil degredation and contamination happens eventually, and even with the external oil filter as is on the 3/Y.

    • WeberAuto
      WeberAuto

      Thanks for watching

  • Tom Robertson
    Tom Robertson

    Early tesla s had vibration and noise problems. I thinking some of the overbuilt parts are the result

    • WeberAuto
      WeberAuto

      Interesting, thank you

  • Andre juneau
    Andre juneau

    I made this video of my car in DEV mode since I couldn’t find any other videos to send to you. uzload.info/fun/lHikeKmax6OD02A/video

    • WeberAuto
      WeberAuto

      Thank you!

  • Andre juneau
    Andre juneau

    I’m sure someone else has posted that you need to put your functioning car into dev mode to see the coolant path with temperatures. But if not you should.

    • WeberAuto
      WeberAuto

      I do not know how to do that. Can you tell me?

  • Donald Fischer
    Donald Fischer

    I'm a few days away from getting my long awaited Mach-E. This and John's video on the Bolt were very vey informative. In fact the Bolt video pushed me into buying the Mach-E. I hope he does a teardown of the Mach-E someday. Keep 'em coming John.

    • WeberAuto
      WeberAuto

      I hope to get one here at our school someday. Thanks for watching

  • Mohamed el hosni
    Mohamed el hosni

    Thank you sir for this great video. I'm a master student specialized in EVs and i was wondering about the rotor of Tesla 3's motor, but now it seems that every thing is clear. Induction motors are proving their high performance. Moreover, their efficiency and low cost make them rated as the best choice for EVs. It will be my pleasure to make contact with you sir to share and exchange some ideas.

    • WeberAuto
      WeberAuto

      Thanks for watching

  • rkan2
    rkan2

    Isn't the differential gear the same in all the Model S driveunits? Only difference with the Performance model being the inverter? edit: I was trying to refer the S/X rear motors before the 2019 Raven upgrade.

    • WeberAuto
      WeberAuto

      @rkan2 Oh, the Raven uses the same rear induction performance motor shown here in this video. The front motor is the permanent magnet motor from the rear of the Model 3

    • rkan2
      rkan2

      @WeberAuto Yeah, I should've clarified I meant all Model S/X rear motors before the 2019 raven upgrade. I think those share the same insides sans the inverter. Raven has different rear and front motors.

    • WeberAuto
      WeberAuto

      @rkan2 If you get an AWD Model S without the performance package, the rear motor and the front motor are the same motor and are rated at 259 hp. Only the RWD and performance AWD have the larger rear motor. My next video will show this

    • rkan2
      rkan2

      @WeberAuto Can you expand on small motor? All S/X I know of from 2012-2019 (before "Raven") have had the same package rear motor. I think at least the stator+rotor have been pretty much the same throughout with changes only in the inverter and maybe thr gearset. At one point there was also rear-wheel drive Performance "P85". The models introduced with the Raven use newer design motors (since 2019)

    • WeberAuto
      WeberAuto

      No, there is a small motor with a different gear ratio in the non-performance AWD models.

  • vaughnbay
    vaughnbay

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

    • WeberAuto
      WeberAuto

      Thank you very much

  • Steven Caskey
    Steven Caskey

    Lubricants better see an Amsoil dealer.

    • WeberAuto
      WeberAuto

      Thanks for watching

  • Grabasandwich
    Grabasandwich

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

    • WeberAuto
      WeberAuto

      Thank you very much!

  • Michael R
    Michael R

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

    • WeberAuto
      WeberAuto

      It is an 11 year old Brother P-Touch label maker. They sell newer versions today. I use the "Extra Strength Adhesive" labels. The others just fall off

  • 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.

    • TEAMERICA
      TEAMERICA

      You mean Twerk!

    • 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

      @Paul Axford Thank you

    • WeberAuto
      WeberAuto

      @Paul Axford Thank you!

    • Paul Axford
      Paul Axford

      @WeberAuto actually in gearbox design it's the "pinion 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 UZload!

    • WeberAuto
      WeberAuto

      Glad it was helpful!

  • Cesar Aguilar
    Cesar Aguilar

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

    • WeberAuto
      WeberAuto

      LOL!

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