Understanding the Tesla Model S Performance Motor

  • күнү жарыяланды 12 күн мурун

    WeberAuto

    узактыгы: 46:32

    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 kgcold.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

M.
M.

Thank You.

3 мүнөт мурун
John P
John P

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

34 мүнөт мурун
WeberAuto
WeberAuto

Thanks for watching

4 мүнөт мурун
Simon Krisztián
Simon Krisztián

This is gold. Thank you.

Саат мурун
WeberAuto
WeberAuto

You're very welcome!

4 мүнөт мурун
alton gifford
alton gifford

I`m getting dizzy.

7 саат мурун
WeberAuto
WeberAuto

Thanks for watching

2 саат мурун
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.

8 саат мурун
WeberAuto
WeberAuto

That sounds like some cool technology

2 саат мурун
Wayne Bartlett
Wayne Bartlett

This is simply the best of YouTube, 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.

10 саат мурун
WeberAuto
WeberAuto

Thank you so much 😀

2 саат мурун
Zane Enaz
Zane Enaz

Absolutely First Class. Thank You.

11 саат мурун
WeberAuto
WeberAuto

Glad you enjoyed it!

2 саат мурун
David Hamlin
David Hamlin

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

11 саат мурун
WeberAuto
WeberAuto

Thank you so much 😀

2 саат мурун
Bo McGillacutty
Bo McGillacutty

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

11 саат мурун
WeberAuto
WeberAuto

Thank you!

2 саат мурун
Jake Lowney
Jake Lowney

Makes me want a Tesla even more!

12 саат мурун
WeberAuto
WeberAuto

Thanks for watching

2 саат мурун
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 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.

14 саат мурун
WeberAuto
WeberAuto

Great information, thank you!

2 саат мурун
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.

16 саат мурун
WeberAuto
WeberAuto

Thanks for watching

2 саат мурун
Tom Robertson
Tom Robertson

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

16 саат мурун
WeberAuto
WeberAuto

Interesting, thank you

2 саат мурун
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. https://youtu.be/_EnEx4ejOn0

16 саат мурун
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.

17 саат мурун
WeberAuto
WeberAuto

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

2 саат мурун
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.

19 саат мурун
WeberAuto
WeberAuto

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

2 саат мурун
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.

19 саат мурун
WeberAuto
WeberAuto

Thanks for watching

2 саат мурун
rkan2
rkan2

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

21 саат мурун
WeberAuto
WeberAuto

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

2 саат мурун
vaughnbay
vaughnbay

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

23 саат мурун
WeberAuto
WeberAuto

Thank you very much

2 саат мурун
Steven Caskey
Steven Caskey

Lubricants better see an Amsoil dealer.

23 саат мурун
WeberAuto
WeberAuto

Thanks for watching

2 саат мурун
Grabasandwich
Grabasandwich

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

23 саат мурун
WeberAuto
WeberAuto

Thank you very much!

2 саат мурун
Michael R
Michael R

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

Күн мурун
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

2 саат мурун
Errol Guard
Errol Guard

Excellent Thank You

Күн мурун
WeberAuto
WeberAuto

Glad you liked it!

Күн мурун
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 .

Күн мурун
WeberAuto
WeberAuto

Thanks for watching

Күн мурун
paul paulzadeh
paul paulzadeh

SKF = MADE IN SWEDEN

Күн мурун
WeberAuto
WeberAuto

Good bearings!

Күн мурун
MARILYNANDERSON88
MARILYNANDERSON88

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

Күн мурун
WeberAuto
WeberAuto

Thanks for watching

Күн мурун
paul paulzadeh
paul paulzadeh

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

Күн мурун
WeberAuto
WeberAuto

LOL, Thanks for that

Күн мурун
GLEN Dooer
GLEN Dooer

More torque than a room full of women.

Күн мурун
WeberAuto
WeberAuto

Trouble maker!

Күн мурун
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.

Күн мурун
WeberAuto
WeberAuto

Amazing technology

Күн мурун
Kasun Chamara
Kasun Chamara

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

Күн мурун
WeberAuto
WeberAuto

I hope so too

Күн мурун
Bjorgulfur Thorsteinsson
Bjorgulfur Thorsteinsson

Amazing job....

Күн мурун
WeberAuto
WeberAuto

Thank you so much 😀

Күн мурун
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'

Күн мурун
WeberAuto
WeberAuto

That makes sense! Thanks

Күн мурун
Me 2
Me 2

Damn thats Green manufacturing right there. Lol so hypocritical

Күн мурун
WeberAuto
WeberAuto

Thanks for watching

Күн мурун
Ronald Garrison
Ronald Garrison

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

Күн мурун
WeberAuto
WeberAuto

Yes it does. Thanks for watching

Күн мурун
Conrad Fuller
Conrad Fuller

Great detail and depth, very interesting, thank you.

Күн мурун
WeberAuto
WeberAuto

Glad you liked it!

Күн мурун
Tommy
Tommy

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

Күн мурун
WeberAuto
WeberAuto

Thank you

Күн мурун
Ian Damon
Ian Damon

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

Күн мурун
WeberAuto
WeberAuto

Thank you!

Күн мурун
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?

Күн мурун
WeberAuto
WeberAuto

Thank you very much

Күн мурун
LMF5000
LMF5000

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

Күн мурун
WeberAuto
WeberAuto

That is what I was thinking!

Күн мурун
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

Күн мурун
Ian Mangham
Ian Mangham

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

Күн мурун
WeberAuto
WeberAuto

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

Күн мурун
Ian Mangham
Ian Mangham

Awesome footage

Күн мурун
WeberAuto
WeberAuto

Glad you enjoyed it

Күн мурун
RagazzoMafioso
RagazzoMafioso

Nissan Leaf = 8 bolts.

Күн мурун
WeberAuto
WeberAuto

Yes, I was wrong

Күн мурун
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.

2 күн мурун
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

Күн мурун
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.

2 күн мурун
WeberAuto
WeberAuto

Glad you enjoyed it!

2 күн мурун
usertogo
usertogo

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

2 күн мурун
WeberAuto
WeberAuto

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

2 күн мурун
ABA SA
ABA SA

who prints your labels :D

2 күн мурун
WeberAuto
WeberAuto

I do, and it takes forever!

2 күн мурун
Bendri Batti
Bendri Batti

Thanks Professor. It is fascinating!!!

2 күн мурун
WeberAuto
WeberAuto

Glad you enjoyed it

2 күн мурун
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..

2 күн мурун
WeberAuto
WeberAuto

Thank you very much

2 күн мурун
r b
r b

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

2 күн мурун
WeberAuto
WeberAuto

Thank you very much!

2 күн мурун
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.

2 күн мурун
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

2 күн мурун
Mr Ian Tchernegovski
Mr Ian Tchernegovski

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

2 күн мурун
WeberAuto
WeberAuto

No, they use the brakes to control wheel slip

2 күн мурун
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

2 күн мурун
WeberAuto
WeberAuto

Thanks, coming this weekend

2 күн мурун
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.

2 күн мурун
WeberAuto
WeberAuto

Thanks. BB1-3793

2 күн мурун
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?

2 күн мурун
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.

2 күн мурун
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.

2 күн мурун
WeberAuto
WeberAuto

Great information, thank you

2 күн мурун
kb25j
kb25j

Awesome video, thanks!

2 күн мурун
WeberAuto
WeberAuto

You are welcome

2 күн мурун
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

2 күн мурун
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?

Күн мурун
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?

2 күн мурун
WeberAuto
WeberAuto

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

2 күн мурун
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.

2 күн мурун
WeberAuto
WeberAuto

That makes perfect sense. Thanks

2 күн мурун
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

2 күн мурун
WeberAuto
WeberAuto

Thank you

2 күн мурун
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?

2 күн мурун
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

2 күн мурун
Martin Stensvehagen
Martin Stensvehagen

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

2 күн мурун
WeberAuto
WeberAuto

Awesome, thank you!

2 күн мурун
Arne Servatius
Arne Servatius

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

3 күн мурун
WeberAuto
WeberAuto

LOL! I do not know

2 күн мурун
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

3 күн мурун
WeberAuto
WeberAuto

Thanks for watching

2 күн мурун
Leon Johnson
Leon Johnson

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

3 күн мурун
WeberAuto
WeberAuto

Glad you enjoyed it!

2 күн мурун
John A
John A

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

3 күн мурун
WeberAuto
WeberAuto

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

2 күн мурун
Need2connect
Need2connect

I absolutely hate Teslas. I shouldnt be here

3 күн мурун
WeberAuto
WeberAuto

LOL, Thanks for being here!

3 күн мурун
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.

3 күн мурун
WeberAuto
WeberAuto

Thanks for watching!

3 күн мурун
maxxedwoodz
maxxedwoodz

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

3 күн мурун
WeberAuto
WeberAuto

Glad it was helpful!

3 күн мурун
Cesar Aguilar
Cesar Aguilar

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

3 күн мурун
WeberAuto
WeberAuto

LOL!

3 күн мурун
Juju-Lips Talia
Juju-Lips Talia

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

3 күн мурун
WeberAuto
WeberAuto

My pleasure!

3 күн мурун
Dinal Abay
Dinal Abay

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

3 күн мурун
WeberAuto
WeberAuto

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

3 күн мурун
dxtrty
dxtrty

Xlnt !

3 күн мурун
WeberAuto
WeberAuto

Thank you

3 күн мурун
Jon Pritzker
Jon Pritzker

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

3 күн мурун
WeberAuto
WeberAuto

Thank you very much

3 күн мурун
Doug Bourdo
Doug Bourdo

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

3 күн мурун
WeberAuto
WeberAuto

LOL, they are fun

3 күн мурун
ed markham
ed markham

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

3 күн мурун
WeberAuto
WeberAuto

Thank you so much!

3 күн мурун
tomdickharryjane
tomdickharryjane

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

3 күн мурун
WeberAuto
WeberAuto

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

3 күн мурун
John's Marine Solutions
John's Marine Solutions

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

3 күн мурун
WeberAuto
WeberAuto

You are welcome. Thanks for watching

3 күн мурун
sam maimas
sam maimas

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

3 күн мурун
WeberAuto
WeberAuto

Thank you very much

3 күн мурун
Chad Courtney
Chad Courtney

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

3 күн мурун
WeberAuto
WeberAuto

Yes, Thank you. I got that wrong

3 күн мурун
Clive Green
Clive Green

Great description, thankyou

3 күн мурун
WeberAuto
WeberAuto

Thank you

3 күн мурун
MrKillswitch88
MrKillswitch88

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

3 күн мурун
WeberAuto
WeberAuto

Thanks

3 күн мурун
neil mchardy
neil mchardy

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

3 күн мурун
WeberAuto
WeberAuto

Excellent! Thank you!

3 күн мурун
Maxx
Maxx

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

3 күн мурун
WeberAuto
WeberAuto

Thanks for your feedback

3 күн мурун
Zaliah
Zaliah

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

3 күн мурун
WeberAuto
WeberAuto

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

3 күн мурун
Juan Castle
Juan Castle

Great detailed discription of the p90 drive motor boss!

3 күн мурун
WeberAuto
WeberAuto

Thank you! 👍

3 күн мурун
Limabean Living
Limabean Living

Excellent Quality

3 күн мурун
WeberAuto
WeberAuto

Glad you like it

3 күн мурун
Jake Rosendahl
Jake Rosendahl

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

3 күн мурун
WeberAuto
WeberAuto

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

3 күн мурун
Roger DeBats
Roger DeBats

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

3 күн мурун
WeberAuto
WeberAuto

LOL!

3 күн мурун
iamthemoss
iamthemoss

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

4 күн мурун
WeberAuto
WeberAuto

Thank you very much!

3 күн мурун
zynzy4u
zynzy4u

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

4 күн мурун
WeberAuto
WeberAuto

Awesome information, thank you!

4 күн мурун
Mart
Mart

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

4 күн мурун
WeberAuto
WeberAuto

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

4 күн мурун
Athanas
Athanas

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

4 күн мурун
WeberAuto
WeberAuto

You are absolutely correct, I missed that

4 күн мурун
Athanas
Athanas

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

4 күн мурун
WeberAuto
WeberAuto

Thank you for the information and thanks for watching

4 күн мурун
Jari Backman
Jari Backman

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

4 күн мурун
WeberAuto
WeberAuto

Thank you very much!

4 күн мурун
LegendLength
LegendLength

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

4 күн мурун
LegendLength
LegendLength

@WeberAuto needing high temperature bearings etc..

3 күн мурун
WeberAuto
WeberAuto

Solved what? I do not understand

4 күн мурун
Kevin Michel
Kevin Michel

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

4 күн мурун
WeberAuto
WeberAuto

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

4 күн мурун
Horatio W
Horatio W

As usual, very informative.

4 күн мурун
WeberAuto
WeberAuto

Thank you

4 күн мурун
CowLevelCrypto
CowLevelCrypto

Nissan Leaf has 8 bolts, not 6

4 күн мурун
WeberAuto
WeberAuto

Yes, thanks. I got that wrong

4 күн мурун
Ivan F
Ivan F

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

4 күн мурун
WeberAuto
WeberAuto

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

4 күн мурун
Poppie
Poppie

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

4 күн мурун
sam maimas
sam maimas

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

3 күн мурун
WeberAuto
WeberAuto

Yes, thanks. I got that wrong

4 күн мурун

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