Understanding the Tesla Model S Performance Motor

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 213mm x 50mm. ring gear to a Chevrolet Bolt EV and Nissan Leaf EV
5:40 A Chevrolet Bolt EV differential 198mm x 34.3mm ring gear with 12-bolts.
6:10 A Nissan Leaf EV differential 200mm x 32mm 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
ABOUT US
Weber State University (WSU) Davis Campus - 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 delevel.info 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

KOMMENTARE

  • Avelino Goncalves
    Avelino GoncalvesVor 14 Stunden

    Nissan with 8 bolts...wight?

  • WeberAuto

    WeberAuto

    Vor 13 Stunden

    Yes, I was wrong. Thanks

  • Ayoub Boulehfa
    Ayoub BoulehfaVor 17 Stunden

    Excellent video

  • WeberAuto

    WeberAuto

    Vor 16 Stunden

    Glad you liked it

  • Didža Nazis
    Didža NazisVor Tag

    Damn, those bearings!

  • WeberAuto

    WeberAuto

    Vor Tag

    I thought the same thing

  • Johan Grimm
    Johan GrimmVor 2 Tage

    Hi prof. Kelly. Very interesting! Thank you! Have you seen this (deep dive but very short) delevel.info/stream/l6y5k3CRrmmEnKE/video.html

  • Philip Quinlan
    Philip QuinlanVor 2 Tage

    Excellent presentation. Thank you.

  • WeberAuto

    WeberAuto

    Vor Tag

    Glad you enjoyed it!

  • Mariusz Zaleski
    Mariusz ZaleskiVor 2 Tage

    Another Wow!. High quality material. Thank you for sharing

  • WeberAuto

    WeberAuto

    Vor 2 Tage

    Glad you enjoyed it

  • Sam Ehlers
    Sam EhlersVor 3 Tage

    Thanks so much!

  • WeberAuto

    WeberAuto

    Vor 2 Tage

    You're welcome!

  • Rudolf Wickond
    Rudolf WickondVor 4 Tage

    250 km/h ? That's fast enough on the Autobahn ... unless someone is in a hurry.

  • WeberAuto

    WeberAuto

    Vor 2 Tage

    True, Thanks for watching

  • Amundsen
    AmundsenVor 5 Tage

    Wow , excellent break down and analysis, SKF is a world leader in bearing technology, and the engineering and sophisticated machining required in this 500Hp power train is quit impressive to say the least. Fantastic explanation.

  • WeberAuto

    WeberAuto

    Vor 5 Tage

    Thank you very much

  • Greatest Evar
    Greatest EvarVor 5 Tage

    bet that motor survived the fire just fine.

  • WeberAuto

    WeberAuto

    Vor 4 Tage

    Everything survived that was not plastic or nylon

  • JagiChan
    JagiChanVor 5 Tage

    Wow, that is some serious engineering; and you did a fantastic job in explaining the whole drive train and the various components. Appreciate the amount of time and effort you dedicated to making such a great video.

  • WeberAuto

    WeberAuto

    Vor 5 Tage

    Thank you very much

  • Learn Progress
    Learn ProgressVor 5 Tage

    Is the lucid are motor better ?

  • WeberAuto

    WeberAuto

    Vor 5 Tage

    I haven’t seen one yet

  • Lucian Mihai
    Lucian MihaiVor 5 Tage

    Would have been interesting to see the winding and inside of the rotor

  • WeberAuto

    WeberAuto

    Vor 4 Tage

    Thanks for watching

  • Lucian Mihai
    Lucian MihaiVor 5 Tage

    The bearing technology is that used in the CNC machines spindle.ceramic are the best and can rotate up to 18000 rpm. They limited it under 18000 in order not to have surprises.

  • WeberAuto

    WeberAuto

    Vor 5 Tage

    Thank you for the information

  • T. W.
    T. W.Vor 6 Tage

    You can actually hear the motor and transmission whine if you sit in the rear seats on Tesla Model S P series cars when driving top speed on the autobahn.

  • WeberAuto

    WeberAuto

    Vor 6 Tage

    Awesome!

  • Michael Jennings
    Michael JenningsVor 6 Tage

    to start, its a rotor not a motor

  • WeberAuto

    WeberAuto

    Vor 6 Tage

    Thanks, yes.

  • niceguy60
    niceguy60Vor 6 Tage

    Wait, the Model S has gears ???

  • WeberAuto

    WeberAuto

    Vor 6 Tage

    Four of them per motor

  • Vasile Cretu
    Vasile CretuVor 8 Tage

    On the third differential /gear box, there are 8 bolts, not six! ;)

  • WeberAuto

    WeberAuto

    Vor 8 Tage

    Yes, thank you. I was wrong

  • Hank Hall
    Hank HallVor 8 Tage

    SKF website (www.skf.com/caribbean/products/rolling-bearings/engineered-products/hybrid-bearings/permissible-speed) says rpm of silicon nitride bearings is limited, their equation gives rpm < 250000/(mean diameter of bearing). Estimating dimensions from your video it appears to me that the 17,900 rpm you mention for the motor is much higher than this limit. Correction: this comment is for grease lubrication.

  • WeberAuto

    WeberAuto

    Vor 8 Tage

    Thanks, I too was confused at first, but then I found the section of the catalog explaining how to safely exceed those limits. Thanks for watching

  • Aaron Schwarz
    Aaron SchwarzVor 8 Tage

    Thats a very complex cooling system // but keeping electronics & transmission oil cooler makes both last longer //

  • WeberAuto

    WeberAuto

    Vor 8 Tage

    Yes it does

  • Aaron Schwarz
    Aaron SchwarzVor 8 Tage

    20:16 there is something magical, no rare earths (china controls) permanent magnets (NdFeB etc) // induction motors are cooler than IPM for this specific reason & can be much much less expensive to make //

  • WeberAuto

    WeberAuto

    Vor 8 Tage

    Thanks for watching

  • Huw Williams
    Huw WilliamsVor 9 Tage

    On the latest models there's something called the 'Octovalve' to manage the cooling systems as I understand it. It would be interesting to see how that works, because it is apparently unique to Tesla.

  • WeberAuto

    WeberAuto

    Vor 9 Tage

    Yes, coming soon. Thanks for watching

  • your wife's boyfriend
    your wife's boyfriendVor 10 Tage

    Wow such a simple motor.

  • WeberAuto

    WeberAuto

    Vor 9 Tage

    It sure is! Thanks for watching

  • your wife's boyfriend
    your wife's boyfriendVor 10 Tage

    Why didn't they just use 2 gears? 😐 why have not just have the differential gear contact the motor gear directly? Its both 78/25 isn't it?

  • your wife's boyfriend

    your wife's boyfriend

    Vor 10 Tage

    @WeberAuto so basically just adjusting gear size will increase acceleration & torque?

  • WeberAuto

    WeberAuto

    Vor 10 Tage

    It would need to have gears with sizes relative to being in first gear on a chain driven bicycle. The gear that turns the wheel would have to be gigantic to get the same gear ratio as we have now with two sets of smaller diameter gears.

  • your wife's boyfriend

    your wife's boyfriend

    Vor 10 Tage

    @WeberAuto how? Why? I don't understand 😕

  • WeberAuto

    WeberAuto

    Vor 10 Tage

    It keeps the gearbox size smaller

  • your wife's boyfriend

    your wife's boyfriend

    Vor 10 Tage

    If less gear = more torque, why not just use 2?

  • Buzz Pedrotti
    Buzz PedrottiVor 10 Tage

    Fascinating. Thanks.

  • WeberAuto

    WeberAuto

    Vor 10 Tage

    Glad you enjoyed it

  • Jon-William Murphy
    Jon-William MurphyVor 11 Tage

    Crazy to me that the stator is welded to the other drive unit housings. I'm thinking about eccentricity, warp and tolerance issues, how did they get that to work? At 39:10, I'd call those pin fins. But buttons is definitely cuter.

  • WeberAuto

    WeberAuto

    Vor 10 Tage

    Good points, pin fins does sound better than buttons, lol, thank you!

  • THE16THPHANTOM
    THE16THPHANTOMVor 11 Tage

    he uses mixed metric and imperial units... that's kind of a super power(to me). i could never get the feel of size with out translating one to the other.

  • WeberAuto

    WeberAuto

    Vor 11 Tage

    Thanks for watching

  • kyimedical
    kyimedicalVor 11 Tage

    You can call nodule for those aluminium lump to increase surface area of coolant chamber ,

  • WeberAuto

    WeberAuto

    Vor 11 Tage

    Thanks

  • Kimche TV
    Kimche TVVor 12 Tage

    PREPARE SHIP FOR LUDICROUS SPEED...lmfao i say that every time i drop the hammer...

  • WeberAuto

    WeberAuto

    Vor 11 Tage

    Lol. Thanks for watching

  • A B
    A BVor 12 Tage

    Damn i wanna watch but his breathing is so disturbing to hear omg.

  • WeberAuto

    WeberAuto

    Vor 11 Tage

    Thanks for the feedback

  • שמעון קופפרמן
    שמעון קופפרמןVor 12 Tage

    I must mention that I enjoyed every second of your video!! You explain excellently (even though I do not really speak English)... I'm glad you're recording with a microphone at a constant distance from your mouth - you sound great! And the video is really good and clear. Your effort and investment is evident in every detail! What could I have asked for more? Wish you the best! And glad to see such videos. I also sent to some friends.

  • WeberAuto

    WeberAuto

    Vor 12 Tage

    Thank you very much

  • craigslist04
    craigslist04Vor 12 Tage

    John, another well-done presentation with great lighting and camera angles. You and Jack Rickard would have made for an awesome collaboration.

  • WeberAuto

    WeberAuto

    Vor 12 Tage

    Thank you very much

  • Fedupwithfed forever
    Fedupwithfed foreverVor 13 Tage

    So what ......I..... Will say ...as much as I'm against tne Uber lib Elon Musk and his TESLA....I DEFINITELY WILL...praise his company for his Quality that's put into the product his products......!

  • WeberAuto

    WeberAuto

    Vor 13 Tage

    Thanks for watching

  • sarastro60
    sarastro60Vor 14 Tage

    Mr. John Kelly, I am writing to you from Argentina. I thank you for such a didactic explanation of the operation of so many mechanical and electronic-mechanical systems. I would like to know what is the voltage in volts and what capacity in ampere hours of the Tesla battery output which you refer to as high voltage. Thank you very much and best regards.

  • WeberAuto

    WeberAuto

    Vor 14 Tage

    You are very welcome. The fully charged battery is about 400V DC. It is a 90kWh battery, so 90,000 Watts / 400 V = 225 Ah

  • Vita Quasus
    Vita QuasusVor 14 Tage

    Best explanation of Tesla Motor I have ever seen. Thanks for this, it was informative and succinct.

  • WeberAuto

    WeberAuto

    Vor 14 Tage

    Glad you enjoyed it!

  • TIYOL56
    TIYOL56Vor 14 Tage

    this is goood stuff.

  • WeberAuto

    WeberAuto

    Vor 14 Tage

    Thank you

  • Wolverine Windsor
    Wolverine WindsorVor 15 Tage

    Magnificent video

  • WeberAuto

    WeberAuto

    Vor 14 Tage

    Thank you

  • Brian Fretwell
    Brian FretwellVor 15 Tage

    I keep wondering what performance S performance. All motor perform so I can't get it.

  • WeberAuto

    WeberAuto

    Vor 15 Tage

    Thanks for watching

  • THE ELECTRIC SIDE OF THINGS
    THE ELECTRIC SIDE OF THINGSVor 15 Tage

    Thank you for such a great video you explained it very well and I enjoyed watching the passion that you have for this electrical vehicle

  • WeberAuto

    WeberAuto

    Vor 15 Tage

    Glad you enjoyed it. Thanks for watching

  • Greg Hoyle
    Greg HoyleVor 17 Tage

    Why doesn’t this require any routine maintenance?

  • WeberAuto

    WeberAuto

    Vor 15 Tage

    The magic of marketing

  • Mingyar
    MingyarVor 18 Tage

    Tesla are over engineer. Just bought more stocks after watching this video

  • WeberAuto

    WeberAuto

    Vor 14 Tage

    Thanks for watching

  • Old Skeptic
    Old SkepticVor 18 Tage

    ... with professional background in Mechanical Engineering and Electronics I would like to thank you for this majestic presentation of the emerging technology... The makers of this car could have done it in a 'flashier' manner, but not with such a careful, detailed approach you have employed here.. Thank you, Sir..

  • WeberAuto

    WeberAuto

    Vor 14 Tage

    Thank you very much

  • tadeusz czachor
    tadeusz czachorVor 18 Tage

    best videos

  • WeberAuto

    WeberAuto

    Vor 18 Tage

    Thanks for watching

  • Kristian Jonsson
    Kristian JonssonVor 18 Tage

    Truck bearing on a passenger car differential!

  • WeberAuto

    WeberAuto

    Vor 18 Tage

    Thanks for watching

  • Chrisso
    ChrissoVor 18 Tage

    Wow and wow again! Does this professional professor know his stuff! Truly an icon on teslas and other motors i would have to say! Truly professional! Aussie Chrisso 🥇🏆

  • WeberAuto

    WeberAuto

    Vor 18 Tage

    Wow, thanks!

  • fawzy moussa
    fawzy moussaVor 19 Tage

    thank you , you are great,

  • WeberAuto

    WeberAuto

    Vor 14 Tage

    So nice of you

  • Xavier Garonnat
    Xavier GaronnatVor 19 Tage

    Great video. Is it the same motor or at least same technology on Model 3 ? If yes on which version/year ? Thanks.

  • WeberAuto

    WeberAuto

    Vor 19 Tage

    Not for the rear motor of the model 3, this is different. The front motor of the Model 3 is similar to this one, but much smaller.

  • miguel goizueta
    miguel goizuetaVor 19 Tage

    Whoever designed this, deserved....What ???

  • WeberAuto

    WeberAuto

    Vor 19 Tage

    Thanks for watching

  • Pulkit Jain
    Pulkit JainVor 19 Tage

    Great. Now I just have to figure out how to make rest of the car!

  • WeberAuto

    WeberAuto

    Vor 19 Tage

    LOL, yes, me too

  • Richard Wallinger
    Richard WallingerVor 19 Tage

    My 1950 Westland Scout helicopter gearbox also used spray lubrication for the gears . I adopted this SECRET lubrication on my radio controlled model turbine helicopter .. Originally I attempted to tun oil bath lubrication which effectively fried the oil and overheated the gears due to hydraulic drag . Great video and super professional presentation .

  • WeberAuto

    WeberAuto

    Vor 19 Tage

    Very interesting, Thanks for watching

  • watchinglosersagain
    watchinglosersagainVor 20 Tage

    So what he is saying at the beginning is that Tesla's balls are bigger than everyone else's.

  • WeberAuto

    WeberAuto

    Vor 20 Tage

    LOL, Thanks for watching

  • Petter Nygaard Hansen
    Petter Nygaard HansenVor 20 Tage

    Very good! My Tesla do 0 to 100km/h on 2,9 sek. No overheat, no vibrations, just 275km/h !

  • WeberAuto

    WeberAuto

    Vor 20 Tage

    Very cool!

  • René V1971
    René V1971Vor 20 Tage

    Very interesting and nicely explained!

  • WeberAuto

    WeberAuto

    Vor 20 Tage

    Many thanks!

  • Mike Nelson
    Mike NelsonVor 21 Tag

    Thank you for this enjoyable video . A clear presentation. I am in the process of expanding my limited knowledge and understanding of how EV's work and are built. This is a bit difficult for an old fart like me , but very, very, interesting and enjoyable journey. So, again, from an old bloke in Australia, thanks.

  • WeberAuto

    WeberAuto

    Vor 20 Tage

    Thanks for watching!

  • Gsacni
    GsacniVor 21 Tag

    Thank you for an excellent presentation. Well done! It does however begs the question.... how did the car catch fire..? Was it related to the electronics and/or overheating of something in the motors..?

  • WeberAuto

    WeberAuto

    Vor 20 Tage

    Thanks, I do not know

  • Gary Eisenzimmer
    Gary EisenzimmerVor 21 Tag

    Geart presentation.

  • WeberAuto

    WeberAuto

    Vor 20 Tage

    Thank you

  • Girth Quake
    Girth QuakeVor 21 Tag

    I'll be super interested to see the internals of not only the front motors, but also the core differences between the SynR Model 3 motor and the permanent-magnet based S motors. Great to see these layed out like this; I see where the motors needed "refinement" based on secondhand details of their performance limitations and where the coolant would leak prior to those bearings being replaced with those ceramics.

  • WeberAuto

    WeberAuto

    Vor 20 Tage

    No, the AWD model 3 still has an induction motor in the front. The model S still has an induction motor in the rear. I think they use the induction motors for maximum performance and the PM Synchronous reluctance motors for economy. I suspect they can use just one motor during steady state cruising. I am still investigating that theory.

  • Girth Quake

    Girth Quake

    Vor 20 Tage

    @WeberAuto Really? I wonder then if Tesla has completely switched motor production to a SynR type of AC motor; makes sense for economies of scale and parts sharing.

  • WeberAuto

    WeberAuto

    Vor 20 Tage

    Thank you. It is my understanding that the 2019+ Model S front motor and the Model 3 rear motor are the same unit.

  • Not The weeknd • 25 years ago
    Not The weeknd • 25 years agoVor 21 Tag

    I will always much rather prefer the classic petrol/diesel engines, I can’t get enough of carburetor technology.

  • WeberAuto

    WeberAuto

    Vor 21 Tag

    Thanks for watching

  • Jorge Suarez
    Jorge SuarezVor 21 Tag

    Good info. Your providing an incredible resource for us techs in the field. What do you think about the GM 2ml70 ECVT transmission?

  • WeberAuto

    WeberAuto

    Vor 21 Tag

    Thank you. It looked on paper, but it was so heavy that it almost made the whole hybrid project useless. They told us in the factory training class in Burbank, CA that they had to add aluminum body panels and improve aerodynamics to get an actual improvement in fuel economy compared to the non-hybrid.

  • Richard S
    Richard SVor 22 Tage

    Very, >Excellent< explanation of this Model S Performance Motor..

  • WeberAuto

    WeberAuto

    Vor 22 Tage

    Thank you very much

  • MFA
    MFAVor 22 Tage

    28:28 the ball's expand... can cope with that...there are only 2 of them...

  • WeberAuto

    WeberAuto

    Vor 22 Tage

    Thanks for watching

  • Krzywoprostydezerter
    KrzywoprostydezerterVor 23 Tage

    They could use ceramic bearings because it is an electric motor, there are no vibrations or any loads from the crank and piston system. They have a higher allowable RPM and generate much lower rolling resistance. The density of the oil may be lower, so it is easier to cool it down. This is a well-engineered engine design. For maximum performance, the reducer also uses ball bearings, lower resistance and lower operating temperature due to lower pressures than tapered roller bearings. A nice thought-out drive ... simply. Great explanation, and great video Professor. Thanks. Greeting from Poland

  • WeberAuto

    WeberAuto

    Vor 23 Tage

    Thank you and thanks for the information

  • FamilyFirstJ
    FamilyFirstJVor 23 Tage

    Incredible

  • WeberAuto

    WeberAuto

    Vor 23 Tage

    Thank you

  • Michiel van der Meulen
    Michiel van der MeulenVor 24 Tage

    It feels strange two gears in the same box have an identical tooth count.

  • WeberAuto

    WeberAuto

    Vor 22 Tage

    @Michiel van der Meulen Yes, we call those "hunting gear ratios." That is very interesting

  • Michiel van der Meulen

    Michiel van der Meulen

    Vor 23 Tage

    @WeberAuto In printing machines one sometimes uses whole number gear ratios to have errors repeat over themselves. But then the consequences for wear and possible vibrations are taken for granted deliberately. Interesting.

  • WeberAuto

    WeberAuto

    Vor 23 Tage

    I thought the same thing. It works well

  • Kim Hansen
    Kim HansenVor 24 Tage

    Great video, even for a non-engineer.

  • WeberAuto

    WeberAuto

    Vor 24 Tage

    Thank you

  • CW Science Projects
    CW Science ProjectsVor 24 Tage

    I have watched many of Professor Kelly's videos. They are well presented, informative and easy to understand. As a gear design engineer with many years experience on off-road vehicle gears I can make following comments 1. Model S final drive gear face width could be wider than required for durability or torque capacity. When the helix angle is low, more face-width is needed for higher overlap ratio and quietness when running (possible explanation) 2. Size of diff carrier bearings. Many times the half shaft spline size required for it's strength under side gear dictates size of bearings rather than load carrying capacity . Also the special bearing type might have a lower capacity than the standard type. Thus requiring a larger size bearing (possible explanation) Please continue making these videos - Good luck

  • WeberAuto

    WeberAuto

    Vor 12 Tage

    Thank you very much!

  • Bob de Bruin
    Bob de BruinVor 24 Tage

    Excellent quality video and content

  • WeberAuto

    WeberAuto

    Vor 24 Tage

    Glad you enjoyed it

  • James LaRoche
    James LaRocheVor 24 Tage

    OooOoOooo! I clicked this super fast!

  • WeberAuto

    WeberAuto

    Vor 24 Tage

    Thank you for watching

  • Johnny Voo
    Johnny VooVor 25 Tage

    Isn't that eight bolts at 6:18

  • WeberAuto

    WeberAuto

    Vor 24 Tage

    @Johnny Voo Thank you

  • Johnny Voo

    Johnny Voo

    Vor 24 Tage

    @WeberAuto OK. Very good video. Thanks.

  • WeberAuto

    WeberAuto

    Vor 25 Tage

    Yes, I was wrong

  • turk 182
    turk 182Vor 25 Tage

    DID you read the small print? You are not aloud to open the gearbox. A Law suit is coming your way so make sure your hole is greased up good because you are in for a roller coaster of a ride.

  • WeberAuto

    WeberAuto

    Vor 25 Tage

    Lol. I guess not

  • Paul Keith
    Paul KeithVor 25 Tage

    Two in a car, from different households, but not wearing masks. Different rules of course.

  • WeberAuto

    WeberAuto

    Vor 25 Tage

    Thanks for watching

  • Alouis Schäfer
    Alouis SchäferVor 25 Tage

    The quality of their Drivetrain Components set the standard for everybody else. I hope they will apply that to commercial vehicles in the future because that is where the focus of the EV World should be. There are some potential issues in my opinion: -The oilpump setup looks very flimsy and cheap compared to the other components. Also the lack of an actual oil filter should be noted down. Sure the magnet will catch most of the worn off metal but pretty much all modern transmissions have a dedicated oil filter so why not Tesla? -Having multiple compartments with different fluids in them is a potential weak point. So I hope Tesla did their homework and used long lasting high quality seals. Failing seals are the Achilles Heel of any vehicle.

  • WeberAuto

    WeberAuto

    Vor 25 Tage

    It is impressive. Thanks for watching

  • Henry Chen
    Henry ChenVor 25 Tage

    I disabled my adblocker and watched the entire ad for you. Keep it up!

  • WeberAuto

    WeberAuto

    Vor 25 Tage

    Thank you!

  • Wilderness Music
    Wilderness MusicVor 25 Tage

    Maybe we should look at the bearings of the Kawasaki Ninjas of the year 2000. My 250cc Ninja had a redline of 14,000 RPM. 20 year old technology.

  • WeberAuto

    WeberAuto

    Vor 25 Tage

    Amazing technology! Thanks for watching

  • Steve Brewster
    Steve BrewsterVor 26 Tage

    Great detailed explanation for somethiing not many of us electron heads get a chance to pull apart. Thank you for the insights.

  • WeberAuto

    WeberAuto

    Vor 26 Tage

    Thank you very much

  • Darren Hwang
    Darren HwangVor 26 Tage

    1.25x speed playback is just right

  • WeberAuto

    WeberAuto

    Vor 26 Tage

    Thanks for watching

  • Brandon Yarber
    Brandon YarberVor 26 Tage

    8 bolts

  • WeberAuto

    WeberAuto

    Vor 26 Tage

    Yes, thanks, I was wrong

  • mdimascio
    mdimascioVor 26 Tage

    Great presentation and detailed analysis!

  • WeberAuto

    WeberAuto

    Vor 26 Tage

    Much appreciated!

  • Sherman Morgan
    Sherman MorganVor 26 Tage

    I really enjoyed watching the video. Very well presented. Thanks for making this very informative video.

  • WeberAuto

    WeberAuto

    Vor 26 Tage

    Glad you enjoyed it!

  • D U V A C H
    D U V A C HVor 26 Tage

    delevel.info/stream/e3vQYoadfoRilYc/video.html

  • Dessin animé
    Dessin animéVor 26 Tage

    Excellent approch for E motors thanks . What does FSD tesla cars work ?

  • WeberAuto

    WeberAuto

    Vor 26 Tage

    Thank you. FSD is not my area of expertise.

  • Drone.Camera.Action
    Drone.Camera.ActionVor 26 Tage

    Would love to see a model 3/Y video to see the difference, especially as this is the future..

  • WeberAuto

    WeberAuto

    Vor 26 Tage

    Coming soon

  • Sanket Devle
    Sanket DevleVor 27 Tage

    Very nice video with detail information about powertrain.

  • WeberAuto

    WeberAuto

    Vor 26 Tage

    Glad you liked it

  • Ancillary Sword
    Ancillary SwordVor 27 Tage

    Incredibly informative!

  • WeberAuto

    WeberAuto

    Vor 27 Tage

    Thank you

  • John Henry Holiday
    John Henry HolidayVor 27 Tage

    Would You buy a Tesla ???? Im tempted and Im not "green"

  • WeberAuto

    WeberAuto

    Vor 27 Tage

    Yes

  • John Henry Holiday
    John Henry HolidayVor 27 Tage

    Awesome.... Tesla in theory could go forward and reverse at 155 MPH.... that could be really fun....

  • WeberAuto

    WeberAuto

    Vor 27 Tage

    Thank you. It would be fun

  • Garry Perrin
    Garry PerrinVor 27 Tage

    Super cool, informative video Professor.

  • WeberAuto

    WeberAuto

    Vor 27 Tage

    Thank you!

  • Michael Doherty
    Michael DohertyVor 27 Tage

    Really good video.......thanks.

  • WeberAuto

    WeberAuto

    Vor 27 Tage

    Thank you very much

  • Robert Bin W
    Robert Bin WVor 27 Tage

    Professional! Thanks!

  • WeberAuto

    WeberAuto

    Vor 27 Tage

    Thank you

  • Randy Carter
    Randy CarterVor 27 Tage

    The numbers get truly outrageous when you multiply the torque forward. Take the motor torque and multiply it by 9.344. That's what's going to the wheels. That final gear has to be that big to take that reliably.

  • WeberAuto

    WeberAuto

    Vor 27 Tage

    Very true. Amazing torque

  • Frederick Carpenter
    Frederick CarpenterVor 27 Tage

    Il

  • WeberAuto

    WeberAuto

    Vor 13 Tage

    Thanks for watching

  • Xiaomieng Ouyang
    Xiaomieng OuyangVor 27 Tage

    Excellent video,

  • WeberAuto

    WeberAuto

    Vor 27 Tage

    Glad you liked it!

  • Xiaomieng Ouyang
    Xiaomieng OuyangVor 27 Tage

    优秀的视频

  • WeberAuto

    WeberAuto

    Vor 27 Tage

    谢谢

  • TraidMarc Guitars
    TraidMarc GuitarsVor 27 Tage

    125ibs is nothing compared to an LS9 coming in at 571lbs plus drivetrain.

  • WeberAuto

    WeberAuto

    Vor 27 Tage

    True, thanks for watching

  • Jim Stevens
    Jim StevensVor 27 Tage

    Great lesson well learnt sir thank you enjoyed every bit !

  • WeberAuto

    WeberAuto

    Vor 27 Tage

    Glad you enjoyed it!

  • Brian Park
    Brian ParkVor 27 Tage

    You mentioned that there were 4 poles in the rotor discussion, but then said you don't know how many poles the stator has. The number of poles in (squirrel cage) induction motor is determined by the stator, not the rotor!

  • WeberAuto

    WeberAuto

    Vor 27 Tage

    @Brian Park That is great information Thank you

  • Brian Park

    Brian Park

    Vor 27 Tage

    ​@WeberAuto Actually, in induction motor with squirrel cage rotor, the rotor can "take on" any number of poles, as dictated by the stator excitation. Some induction motors change base speed by "pole switching" (reversing the polarity of parts of the stator windings, or switching the current between winding sets.) My washing machine gets 3 different speeds that way, without any electronics. A comment about not having permanent magnets: in addition to permitting hotter rotor, it permits "field weakening", which permits the motor to have an unlimited top speed. This makes it easier to have performance with fixed-ratio gearbox.

  • WeberAuto

    WeberAuto

    Vor 27 Tage

    Yes, I was wrong. The stators have the four poles not the rotor

  • tiger fighter greece
    tiger fighter greeceVor 28 Tage

    The elektrical moter is the future in automove

  • Alouis Schäfer

    Alouis Schäfer

    Vor 25 Tage

    The Diesel Engine has a long future ahead of itself. It not even close to being dead. Overall more efficient and cost effective than gasoline. And contrary to popular opinion Diesels are in fact better on emissions than gasoline could ever be. Diesel/Electric hybrids will be the future.

  • WeberAuto

    WeberAuto

    Vor 27 Tage

    Thanks for watching

  • Robert Clark
    Robert ClarkVor 28 Tage

    Ceramic bearings are exactly what you have in that motor. Ceramic is metallic and silicon nitride is a metallic(ceramic) material.

  • WeberAuto

    WeberAuto

    Vor 27 Tage

    Yes, thank you. I was wrong

  • sandyt
    sandytVor 28 Tage

    For years I have wondered what the makeup of the Tesla drive system was built like. I doubt that I have ever seen a more concisely explained explanation of any machine. Done with no showy exaggeration or hype, just as good as anyone could hope for. Thank you for your efforts

  • WeberAuto

    WeberAuto

    Vor 28 Tage

    Thank you very much

  • MrViking
    MrVikingVor 28 Tage

    This was VERY interesting. I learned a lot 😊👌

  • WeberAuto

    WeberAuto

    Vor 28 Tage

    Thank you

Nächster