Understanding the Tesla Model S Performance Motor

2021-ж., 16-фев.
131 586 Көрүүлөр

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 kgworld.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

Жорумдар
  • Brilliantly informative, thanks!

    orian cunninghamorian cunningham5 саат мурун
  • SKF "when pedigree matters and it does !"

    RF monkeyRF monkey7 саат мурун
    • Amazing bearing technology! Thanks for watching

      WeberAutoWeberAuto6 саат мурун
  • How much?

    eraserheads78eraserheads7810 саат мурун
    • A quantity

      WeberAutoWeberAuto10 саат мурун
  • 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 .

    Tony STony S10 саат мурун
    • I saw that too

      WeberAutoWeberAuto10 саат мурун
  • Put that on the list of things you can check and fix to save yourself a lot of money

    johnny zeejohnny zee11 саат мурун
    • Thanks for watching

      WeberAutoWeberAuto11 саат мурун
  • 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!

    Kraig Schultz - SE LLCKraig Schultz - SE LLC12 саат мурун
    • You're very welcome! Thanks for watching

      WeberAutoWeberAuto11 саат мурун
  • Thank You.

    M.M.12 саат мурун
    • You're welcome

      WeberAutoWeberAuto11 саат мурун
  • Can't wait for tesla to start using exro's coil driver!!! And get rid of all the needed gears!!

    John PJohn P13 саат мурун
    • Thanks for watching

      WeberAutoWeberAuto12 саат мурун
  • This is gold. Thank you.

    Simon KrisztiánSimon Krisztián14 саат мурун
    • You're very welcome!

      WeberAutoWeberAuto12 саат мурун
  • I`m getting dizzy.

    alton giffordalton gifford20 саат мурун
    • Thanks for watching

      WeberAutoWeberAuto15 саат мурун
  • 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.

    A IA I21 саат мурун
    • That sounds like some cool technology

      WeberAutoWeberAuto15 саат мурун
  • This is simply the best of KGworld, 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.

    Wayne BartlettWayne Bartlett23 саат мурун
    • Thank you so much 😀

      WeberAutoWeberAuto15 саат мурун
  • Absolutely First Class. Thank You.

    Zane EnazZane Enaz23 саат мурун
    • Glad you enjoyed it!

      WeberAutoWeberAuto15 саат мурун
  • Very nice job!! You are so skilled in your teaching abilities. Very competent communication skills !! Kudos !!

    David HamlinDavid HamlinКүн мурун
    • Thank you so much 😀

      WeberAutoWeberAuto15 саат мурун
  • 9.4 ratio is plenty close enough for this convo. (WELL DONE got my sub)

    Bo McGillacuttyBo McGillacuttyКүн мурун
    • Thank you!

      WeberAutoWeberAuto15 саат мурун
  • Makes me want a Tesla even more!

    Jake LowneyJake LowneyКүн мурун
    • Thanks for watching

      WeberAutoWeberAuto15 саат мурун
  • 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 no or no TEC I am surprised the Si3N4 ball bearings need any lubricant. My guess is the lube is not for the SiN ball but for the Invar bearing inner and outer races.

    Ed HughesEd HughesКүн мурун
    • Great information, thank you!

      WeberAutoWeberAuto15 саат мурун
  • 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.

    MrCarGuyMrCarGuyКүн мурун
    • Thanks for watching

      WeberAutoWeberAuto14 саат мурун
  • Early tesla s had vibration and noise problems. I thinking some of the overbuilt parts are the result

    Tom RobertsonTom RobertsonКүн мурун
    • Interesting, thank you

      WeberAutoWeberAuto14 саат мурун
  • I made this video of my car in DEV mode since I couldn’t find any other videos to send to you. kgworld.info/wiki/video/w6mldttkm56Gz2Y

    Andre juneauAndre juneauКүн мурун
    • Thank you!

      WeberAutoWeberAuto8 саат мурун
  • 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.

    Andre juneauAndre juneauКүн мурун
    • I do not know how to do that. Can you tell me?

      WeberAutoWeberAuto14 саат мурун
  • 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.

    Donald FischerDonald FischerКүн мурун
    • I hope to get one here at our school someday. Thanks for watching

      WeberAutoWeberAuto14 саат мурун
  • 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.

    Mohamed el hosniMohamed el hosniКүн мурун
    • Thanks for watching

      WeberAutoWeberAuto14 саат мурун
  • Isn't the differential gear the same in all the Model S driveunits? Only difference with the Performance model being the inverter?

    rkan2rkan2Күн мурун
    • No, there is a small motor with a different gear ratio in the non-performance AWD models.

      WeberAutoWeberAuto14 саат мурун
  • Some people are just naturals.....you're one of them John. Great Job!

    vaughnbayvaughnbayКүн мурун
    • Thank you very much

      WeberAutoWeberAuto14 саат мурун
  • Lubricants better see an Amsoil dealer.

    Steven CaskeySteven CaskeyКүн мурун
    • Thanks for watching

      WeberAutoWeberAuto14 саат мурун
  • Your qualifications and credentials are incredible! Thanks for making these videos

    GrabasandwichGrabasandwichКүн мурун
    • Thank you very much!

      WeberAutoWeberAuto14 саат мурун
  • Hey what type label maker do you use? I love the professional look of the parts you used.

    Michael RMichael RКүн мурун
    • 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

      WeberAutoWeberAuto14 саат мурун
  • Excellent Thank You

    Errol GuardErrol GuardКүн мурун
    • Glad you liked it!

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

    paul paulzadehpaul paulzadehКүн мурун
    • Thanks for watching

      WeberAutoWeberAutoКүн мурун
  • SKF = MADE IN SWEDEN

    paul paulzadehpaul paulzadehКүн мурун
    • Good bearings!

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

    MARILYNANDERSON88MARILYNANDERSON88Күн мурун
    • Thanks for watching

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

    paul paulzadehpaul paulzadehКүн мурун
    • LOL, Thanks for that

      WeberAutoWeberAutoКүн мурун
  • More torque than a room full of women.

    GLEN DooerGLEN DooerКүн мурун
    • Trouble maker!

      WeberAutoWeberAutoКүн мурун
  • 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.

    Jameel JaJameel JaКүн мурун
    • Amazing technology

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

    Kasun ChamaraKasun ChamaraКүн мурун
    • I hope so too

      WeberAutoWeberAutoКүн мурун
  • Amazing job....

    Bjorgulfur ThorsteinssonBjorgulfur ThorsteinssonКүн мурун
    • Thank you so much 😀

      WeberAutoWeberAutoКүн мурун
  • 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'

    Andy ManAndy Man2 күн мурун
    • That makes sense! Thanks

      WeberAutoWeberAutoКүн мурун
  • Damn thats Green manufacturing right there. Lol so hypocritical

    Me 2Me 22 күн мурун
    • Thanks for watching

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

    Ronald GarrisonRonald Garrison2 күн мурун
    • Yes it does. Thanks for watching

      WeberAutoWeberAutoКүн мурун
  • Great detail and depth, very interesting, thank you.

    Conrad FullerConrad Fuller2 күн мурун
    • Glad you liked it!

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

    TommyTommy2 күн мурун
    • Thank you

      WeberAutoWeberAuto2 күн мурун
  • Love the thoroughness of the explanation. Also love the Mr Peabody reference to the Wayback Machine...

    Ian DamonIan Damon2 күн мурун
    • Thank you!

      WeberAutoWeberAuto2 күн мурун
  • 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?

    Star fulStar ful2 күн мурун
    • Thank you very much

      WeberAutoWeberAuto2 күн мурун
  • It's nice of Tesla to put labels on everything so you know what it is. Lol

    LMF5000LMF50002 күн мурун
    • That is what I was thinking!

      WeberAutoWeberAuto2 күн мурун
  • 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

    Georg AntonischkiGeorg Antonischki2 күн мурун
  • Slow down man slow down,you'll blow the trans-axle,I'm Hudson he's Hicks.

    Ian ManghamIan Mangham2 күн мурун
    • LOL! You can speed up the video if you want to

      WeberAutoWeberAuto2 күн мурун
  • Awesome footage

    Ian ManghamIan Mangham2 күн мурун
    • Glad you enjoyed it

      WeberAutoWeberAuto2 күн мурун
  • Nissan Leaf = 8 bolts.

    RagazzoMafiosoRagazzoMafioso2 күн мурун
    • Yes, I was wrong

      WeberAutoWeberAuto2 күн мурун
  • 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.

    Dave SeegerDave Seeger2 күн мурун
    • 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

      WeberAutoWeberAuto2 күн мурун
  • It was an absolute delight to listen to you explaining the functionality of the rear motor and drive unit. Thank you.

    Con el ValCon el Val2 күн мурун
    • Glad you enjoyed it!

      WeberAutoWeberAuto2 күн мурун
  • @6:15 counting 8 bolts - how many times did you look?

    usertogousertogo2 күн мурун
    • LOL, I knew it was 8, but said 6 in the video. I'm getting old ;)

      WeberAutoWeberAuto2 күн мурун
  • who prints your labels :D

    ABA SAABA SA2 күн мурун
    • I do, and it takes forever!

      WeberAutoWeberAuto2 күн мурун
  • Thanks Professor. It is fascinating!!!

    Bendri BattiBendri Batti2 күн мурун
    • Glad you enjoyed it

      WeberAutoWeberAuto2 күн мурун
  • 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..

    Randall HashRandall Hash2 күн мурун
    • Thank you very much

      WeberAutoWeberAuto2 күн мурун
  • I’m a motor / ASD guy. This is a brilliant explanation! Kudos.

    r br b2 күн мурун
    • Thank you very much!

      WeberAutoWeberAuto2 күн мурун
  • 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.

    Andrew TAndrew T3 күн мурун
    • There is a seal next to that ceramic bearing. The seal must be a remarkable design to hold up at those high rpms

      WeberAutoWeberAuto2 күн мурун
  • open diff lol do they have a lsd option at all ?

    Mr Ian TchernegovskiMr Ian Tchernegovski3 күн мурун
    • No, they use the brakes to control wheel slip

      WeberAutoWeberAuto3 күн мурун
  • 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

    Tang WilliamTang William3 күн мурун
    • Thanks, coming this weekend

      WeberAutoWeberAuto3 күн мурун
    • @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.

      Tang WilliamTang William3 күн мурун
    • Thanks. BB1-3793

      WeberAutoWeberAuto3 күн мурун
  • @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?

    tomdickharryjanetomdickharryjane3 күн мурун
    • 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.

      WeberAutoWeberAuto2 күн мурун
  • 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.

    tomdickharryjanetomdickharryjane3 күн мурун
    • Great information, thank you

      WeberAutoWeberAuto2 күн мурун
  • Awesome video, thanks!

    kb25jkb25j3 күн мурун
    • You are welcome

      WeberAutoWeberAuto3 күн мурун
  • 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

    Anthony WilliamsAnthony Williams3 күн мурун
    • 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?

      Gabe HGabe H2 күн мурун
    • 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?

      Andrew TAndrew T3 күн мурун
    • Thanks for the information. It is good to hear you are offering that service at your shop.

      WeberAutoWeberAuto3 күн мурун
  • 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.

    Al WilliamsAl Williams3 күн мурун
    • That makes perfect sense. Thanks

      WeberAutoWeberAuto3 күн мурун
  • Thank you so much for the video. Engineering is key and I am impressed. Cheers, John L. in Fairlawn Virginia USA

    J LJ L3 күн мурун
    • Thank you

      WeberAutoWeberAuto3 күн мурун
  • 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?

    ShaunieDaleShaunieDale3 күн мурун
    • 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

      WeberAutoWeberAuto3 күн мурун
  • Supert interesting. I will watch any of the upcoming videos you mentioned

    Martin StensvehagenMartin Stensvehagen3 күн мурун
    • Awesome, thank you!

      WeberAutoWeberAuto3 күн мурун
  • Prof. What is cost of hardening car from magnetic pulse be nice to leave town if nukes on the way🤓

    Arne ServatiusArne Servatius3 күн мурун
    • LOL! I do not know

      WeberAutoWeberAuto3 күн мурун
  • 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

    Joni EnglishJoni English3 күн мурун
    • Thanks for watching

      WeberAutoWeberAuto3 күн мурун
  • Thank you for this explanation at this detailed level. Awesome information!!

    Leon JohnsonLeon Johnson3 күн мурун
    • Glad you enjoyed it!

      WeberAutoWeberAuto3 күн мурун
  • 370kw =. 496.178 hp and NOT 503 necessarily. Except if you explicitly state the kind of HP.

    John AJohn A3 күн мурун
    • You are correct for imperial horsepower, I should have double checked. Apparently that spec is in metric horsepower. Thanks for the feedback

      WeberAutoWeberAuto3 күн мурун
  • I absolutely hate Teslas. I shouldnt be here

    Need2connectNeed2connect3 күн мурун
    • LOL, Thanks for being here!

      WeberAutoWeberAuto3 күн мурун
  • 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.

    Gary MorrisonGary Morrison3 күн мурун
    • Thanks for watching!

      WeberAutoWeberAuto3 күн мурун
  • Thanks for the info. So much great info on KGworld!

    maxxedwoodzmaxxedwoodz3 күн мурун
    • Glad it was helpful!

      WeberAutoWeberAuto3 күн мурун
  • But they wouldn't let me disassemble that one! 🙈🤣😂😂

    Cesar AguilarCesar Aguilar3 күн мурун
    • LOL!

      WeberAutoWeberAuto3 күн мурун
  • Incredible video. Love it. Thank you for your time and efforts in educating us!!!

    Juju-Lips TaliaJuju-Lips Talia3 күн мурун
    • My pleasure!

      WeberAutoWeberAuto3 күн мурун
  • Where are the electrical connections to the rotor itself? I see can power going into the control electronics, but not the outputs.

    Dinal AbayDinal Abay3 күн мурун
    • There are none. It uses electromagnetic induction for power from the stator

      WeberAutoWeberAuto3 күн мурун
  • Xlnt !

    dxtrtydxtrty3 күн мурун
    • Thank you

      WeberAutoWeberAuto3 күн мурун
  • 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!

    Jon PritzkerJon Pritzker4 күн мурун
    • Thank you very much

      WeberAutoWeberAuto3 күн мурун
  • Man, I want to test drive a Tesla now !!!!

    Doug BourdoDoug Bourdo4 күн мурун
    • LOL, they are fun

      WeberAutoWeberAuto3 күн мурун
  • What a wonderful job of communication you do. The details you explain are a lot easier to understand.. You are an excellent teacher.

    ed markhamed markham4 күн мурун
    • Thank you so much!

      WeberAutoWeberAuto3 күн мурун
  • 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!

    tomdickharryjanetomdickharryjane4 күн мурун
    • 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!

      WeberAutoWeberAuto3 күн мурун
  • Thanks for an excellent presentation on the Tesla Motor Drive Unit.

    John's Marine SolutionsJohn's Marine Solutions4 күн мурун
    • You are welcome. Thanks for watching

      WeberAutoWeberAuto4 күн мурун
  • 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.

    sam maimassam maimas4 күн мурун
    • Thank you very much

      WeberAutoWeberAuto4 күн мурун
  • Ceramic is a class of materials which includes Silicon Nitride, so a Silicon Nitride bearing is a Ceramic Bearing.

    Chad CourtneyChad Courtney4 күн мурун
    • Yes, Thank you. I got that wrong

      WeberAutoWeberAuto4 күн мурун
  • Great description, thankyou

    Clive GreenClive Green4 күн мурун
    • Thank you

      WeberAutoWeberAuto4 күн мурун
  • Look up Project Arizonian if you want to see some crazy engineering, basically it was a CIA operation to recover a sunken Soviet Submarine.

    MrKillswitch88MrKillswitch884 күн мурун
    • Thanks

      WeberAutoWeberAuto4 күн мурун
  • That pipe through the motor we always called a sparge pipe when filled to rolling mills for coolant.

    neil mchardyneil mchardy4 күн мурун
    • Excellent! Thank you!

      WeberAutoWeberAuto4 күн мурун
  • 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.

    MaxxMaxx4 күн мурун
    • Thanks for your feedback

      WeberAutoWeberAuto4 күн мурун
  • 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

    ZaliahZaliah4 күн мурун
    • 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.

      WeberAutoWeberAuto4 күн мурун
  • Great detailed discription of the p90 drive motor boss!

    Juan CastleJuan Castle4 күн мурун
    • Thank you! 👍

      WeberAutoWeberAuto4 күн мурун
  • Excellent Quality

    Limabean LivingLimabean Living4 күн мурун
    • Glad you like it

      WeberAutoWeberAuto4 күн мурун
  • I didn't find anything about the 2021 Model S bearings, but the Plaid version mentions carbon sleeved rotors.

    Jake RosendahlJake Rosendahl4 күн мурун
    • I suspect we won't know anything until someone takes one apart.

      WeberAutoWeberAuto4 күн мурун
  • Do we have 51 states now or did Nebraska or one of those other western states switch up their name to Weber?

    Roger DeBatsRoger DeBats4 күн мурун
    • LOL!

      WeberAutoWeberAuto4 күн мурун
  • You guys have fantastic videos. I am sure you inspire lots of future mechanics and engineers.

    iamthemossiamthemoss4 күн мурун
    • Thank you very much!

      WeberAutoWeberAuto4 күн мурун
  • 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!

    zynzy4uzynzy4u4 күн мурун
    • Awesome information, thank you!

      WeberAutoWeberAuto4 күн мурун
  • 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 :). )

    MartMart4 күн мурун
    • Great point! Old habits are hard to break, but I am working on it. Thanks for watching.

      WeberAutoWeberAuto4 күн мурун
  • Well actually i see that the ceramic ball bearings have indirect cooling through the shaft they hold on.

    AthanasAthanas4 күн мурун
    • -ceramic ball bearings are used in high efficiency home/commercial heating unit vacuum fans [draws/sucks the flame through the heat exchanger} ;}

      Blogen GeezerBlogen Geezer5 саат мурун
    • You are absolutely correct, I missed that

      WeberAutoWeberAuto4 күн мурун
  • 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.

    AthanasAthanas4 күн мурун
    • Thank you for the information and thanks for watching

      WeberAutoWeberAuto4 күн мурун
  • This was fantastic, and having participating in high-speed machinery design I really enjoyed the presentation of the cooling path. Many thanks!

    Jari BackmanJari Backman4 күн мурун
    • Thank you very much!

      WeberAutoWeberAuto4 күн мурун
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