Tesla Cybertruck 845-HP "Cyberbeast" Motors!
Sandy and Paul take a look at the motors from the Tesla Cybertruck tri-motor "Cyberbeast."
Thanks to The 3-Dimensional Services Group for sponsoring this video!
The 3-Dimensional Services Group is the world most capable and agile prototype and low volume manufacturer. We’re the premier source for the world’s most innovative companies to accelerate their development timelines and then we’re are able to scale up our low volume manufacturing processes across a massive amount of equipment to produce volumes that other prototype/job shops could never be able to support. This capability allows our customers’ to come to market more quickly as well as support changes in designs fluidly while in production.
3dimensional.com/
Munro Live is a KZhead channel that features Sandy Munro and other engineers from Munro & Associates. Munro is an engineering consulting firm and a world leader in reverse engineering, costing, and teardown benchmarking.
Munro Home of Lean Design
leandesign.com/
We would really appreciate it if you subscribe to our channel. The more subscribers we have, the more opportunities and teardowns we will be able to bring to you!
For more behind the scenes content:
X/Twitter: / live_munro
Instagram: / munrolive
LinkedIn: / munro-live
Munro Live Podcast: / @munrolivepodcast
Inquiries: Sales@leandesign.com
For Exclusive Content Join our Patreon!
Patreon: / munrolive
#tesla #cybertruck #elonmusk
20:57 "That's not really a guess, that's just an engineering assumption." 😂
That's a great weasel word, I'll have to use that someday.
So, an educated guess?
The term Sandy was grasping for is "Preliminary hypothesis".
@@revengefrommars its still a guess because they literaly have no idea lol...
we call them SWAG's ("Scientific Wild Ass Guess")
It's good to hear Ben's voice in your video. I thought he was a good presenter and a real value to Munro Live.
We agree!
I like all the episodes, but a bit more in which Ben is presenting, good job, Ben 👍🏼🫡
@@ntulsianYes!
@@MunroLive this outdated technology requires oil changes and liquid cooling just like combustion engines and its not 845 hp its 3 motors slapped together to equal 845 hp there are chevy small bocks pushing 900 hp naturally aspirated lol just ''one engine alone'' lol you call this superior tech? get real kids.
@@MunroLive look up louisville family celebrates 1 million miles it's a 2007 honda crv 3rd generation crv with honda k24/2.4 liter 4 cylinder with over 1 million miles lol so munros full of crap in this video.
On the monoblock vs segmented magnets, I would recommend using magnaview film to see if the magnet is segmented inside of the external plating. The other thing to check is the electrical conductivity of the magnet to see if they added anything to the magnet that would reduce the electrical conductivity before sintering it. Both methods could be used to reduce eddy currents.
nah tesla wants to cost cut no matter what. Only the high margins matter now
@@NyashaMPatrick is referring to the testing methods to inspect the motor, nothing to do with Tesla making savings.
As I understand it, rare-earth magnets use sintered material (not poured into a mold in a liquid state). So perhaps a nonconductive binder (instead of sintering) is possible, in which case there would be no eddy losses on any axis. (The counterpoint is that such a structure would not benefit from being plated...so this may not be the case.)
@@satoshimanabe2493 the plating is typically alternating layers of nickel an copper and while I agree that eddy currents may be generated in the plating it is very difficult to build up eddy currents into very thin conductive sheets. I have spent a lot of time using induction power to evaporate metal in a vacuum chamber and bulk blocks are much easier to get thermal power into than thin conductive sheets. This is also why laminations are used. Lastly the plating would still be essential as Neodynimum based magnets are highly succeptialbe to moisture based corrosion.
@@patrickmorse7549 Thanks for the explanation about plating, very helpful. What I meant by non-sintered, seems it's actually called bonded magnets (I'm sure you're familiar). I was trying to say that if the bonding fully coats each particle so they are electrically isolated, would there be any need for additional segmentation?
I just love these Monro cybertruck reveal videos. I'm embarrassed to say they remind me of an old time burlesque show. Where each week the Cybertruck takes off a little bit more. Thank you for not playing bump and grind music.
Appreciate you included more of the teardown
That bearing rotation constraint is most excellent !!
Absolutely! Huge improvement for reliability/life cost. Some bearings have had pins/nubs on the outer race to prevent spinning and I've never understood why more of them don't.
После разборки, совместить три подшипника будет не возможно, это сделано чтобы вы не смогли сделать ремонт
It adds parts: the bearing rotation locking mechanism and the spring. Does not align with a "the best part is no part" philosophy. Should by constantly checked for better alternatives.
@@hybridinnovate Munro disassembled these very drive units including getting those bearings out. Why do you think this hinders repair of the units? Do you think, they broke the spring mechanism?
@@MooseOnEarth это не мешает ремонту, позиционировать одновременно 3 подшипника для сборки будет не просто
Great video, thank you so much for putting this for free! Some thoughts on the non segmented magnets: First of all, yes there are eddy current losses in the magnets but they are quite small compared to iron and copper losses. Still they can be problematic since they are the heat source in a temperature sensitive part. One problem with the segmentation is that you will lose some torque because of having less magnet material in the rotor. This will make the motor a bit less efficient. I think that this loss of efficiency could be more than the additional eddy current losses. However, these eddy current losses are mainly due to the current harmonics caused by the PWM. This means that you can drastically influence the magnet losses by the PWM. Maybe Tesla optimized their PWM in order to reduce the magnet losses for not having to segment the magnets.
Dont worry MUNRO will SELL the Cybertruck report for $1 MILLION Dollars.
It has nothing to do with what you are saying. It’s because this pm motor will never reach deep into the flux weakening region. If you are interested I can explain why I know.
I am @@ignaciohavok1
@@ignaciohavok1 I am interested, please explain!
@@ignaciohavok1sounds interesting, could you explain? Does it mean the motor is not driven to high speeds or is the corner speed quite high?
The disassembly intro adds context and perspective. If you were to add them to most of your videos we all would get a lot more out of them... THANKS!!!
Dear Mr. Munro and Team, I wanted to extend my heartfelt appreciation for the incredible work you all have done in meticulously disassembling and analyzing the state-of-the-art machines. Tesla’s attention to details and dedication to refining their design and technology are truly remarkable. I was particularly fascinated by the hair-pin windings which I saw in some recent cars alternators. To me, they are a piece of art. No wonder why tesla is the ev-leaders, the mindfulness and understanding displayed by Tesla engineers in perfecting even the smallest details is truly commendable. Thanks
STFU. TESLA IS GARBAGE
Hairpin motors have been around since at least the mid 1950s. Yes it looks very neat but is nothing new :)
Elon isn't going to read this or take it into account at your next HR assessment mate... LoL 🤣
@@edwardfletcher7790 Yes! These teardowns are pure Tesla PR. The engineering is OK, but strikingly ordinary. A naive audience would be impressed by a mid 1950's automatic transmission, an ordinary ICE, a Timex mechanical watch... shiny stuff. Nothing in the Tesla is fundamentally different or better than all the cool stuff in any of the other electric cars, And most of those others have not had anywhere near as many troubling safety-related recalls: steering wheels that fall off, steering racks that are not mounted correctly, Cybertruck accelerators that jam, etc.
@@kenfry2664 I'm glad someone else noticed the problems I did. The whole under carriage is a cleaning and rust prevention nightmare !!
Cooling the magnets makes sense, because overheating a magnet can reduce it's strength permanently.
Kudos to Munro and associates - all your presenters are very experienced and do outstanding presentations. Excellent information and excellent naught.
My Honda Civic at 460,000 miles says otherwise. I got that out of a piston car. It's more than doable if you regularly maintain.
Don’t confuse the cult with facts. Elon could take a dump on a sidewalk and they would be clamoring to put it on their mantle! 🙄
03 E220CDI , had over 1M Km and a original turbo on it's way out when my family got rid of it . Grandpa passed it down to my aunt and she traded it in for a 2016 BMW 3 series Gran Coupe. Car had literally 0 issues other than the loud turbo .
Even if they don't rebuilding or replacing an engine is still cheaper than a new battery half the time and it's not clear how many new batteries these cars would need to do that kind of mileage.
Civic reliability is absolutely phenomenal, the on of the few things beyond a civic is an early 2000s diesel Volkswagen Jetta, a million miles is common with those things. What year of civic do you have? I recall that the most (in fact the only) I could find of the Honda civics that were able to reach a million miles were all 2006.
She's an 07 civic. Has all the paint issues, but mechanically absolutely sound.
"It's not a guess. It's an engineering assumption." Best Sandy quote ever!
Ask the man whether he would trust a Cybertruck pulling a travel trailer up into mountains with the wife and kids... or a 73 Ford LTD wagon/trailer towing package 🙃
This kind of videos really benefits from Sandy outlining the wider meaning and historic place of all the technical details. As a software engineer I otherwise wouldn’t quite catch the showcased engineering genius 🙏🏻
Software & Hardware need to work alongside on the Floor , to better understand one another.
@@markplott4820 Isn't that the truth. Especially when it comes to embedded design, it's easy to say "X" will work, then realize it doesn't in practice. Flashbacks to RS-232 vs RS-485 pain in the rear. Especially when the company is trying to be cheap.
_Extraordinary Engineering_ That was an engaging teardown boys! Can't wait for the next one....
Would love to see more of those big honking gears, that's some pretty wicked stuff. Machined, smooth, shiny metal - practical and beautiful all at once.
that spring loaded pin to catch and stop outer race from spinning is so smart of an idea.. and Sandy's response "so anyways..." lol
It's an interesting solution but... The tiny pin may prevent a small problem from quickly becoming a bigger one however at the power and torque levels involved once that bearing gets grabby its going to spin unless the operator notices the change in sound when it starts to fail and has it serviced expeditiously. Time will tell whether having that pin tear loose causes more damage than it prevents. Hopefully the MTBF of those bearings exceeds the half to one million mile operational life expectation of the vehicle. I can see that spring loaded pin failing and causing damage similar to other implementations using spring located pins that we've had for some time in pneumatic and hydraulic tools. If the damage isn't too catastrophic sometimes I've been able to just clean up the seating area and drill a new hole for the locating pin and spring while other times its weld and machine a new surface or replace that part of the housing depending on the cost of the part and the value of the unit or perhaps the cost of the downtime. Like Sandy said:. so anyways... ;> Best!
Only by Munro... thx folks for the teardown and comments, this info is priceless both for existing and future EV owners. Keep on building great name!
I am no electrical engineer but Tesla uses segmented magnets in their other motors. There must be a valid reason why they changed. I remember a few years ago Sandy was surprised at segmented magnets used in the model 3 motor
If loss of efficiency is the downside, it is possible that torque is the upside?
I think its very likely that the inefficiency is only noticeable at high power loads, which it too infrequent to have an impact on range. The motor will have at least 300hp and will probably be using less than 60 at cruising speed.
Trucks need MORE Torque than Speed . more Efficiency over Acceleration. more RANGE when Towing.
my best guess is that elon has 4 years backlog on the cybertruck. Now take that to its conclusion.........
@@davidanalyst671 No idea what you mean. What does the magnet has to do with the backlog?
I think the magnets issue is so that tesla intentionally makes the motor hotter so that it can use that heat to keep the battery warm in colder weather. It is really the only motor that is running most of the time and especially on the highway. So, there is a lot of heat loss in colder climates. Basically, they don't have to add a heater, but then they can modulate the cooling for hotter climates, or even shift the work to the induction motors. I am just guessing, but I'm usually right.
Ben's explanations have been awesome! Thanks to both! 👏👏😍😍
this is just an amazing 20 minutes piece of knowledge. THANKS
thanks Munro team!
Great craftsmanship.
"You'll never get that (half a million miles) engine life from an ice car." I'm real damn sure a couple of ICE cars have passed a million miles, not just half a million.
Guy math: Spending $30,000 and countless hours to keep a $3,000 vehicle running. 😁
Stalin math: “Spending $60k ($30k + your labor) to get that lone $3k car to 1 M miles is a tragedy. Getting 1 M Teslas to 1 M miles is a statistic.”
Better than spending a 100 grand on the Cybertruck monstrosity! I have almost 300,000 miles on my 4 cylinder Toyota 4 runner with the original engine and tranny and still runs great. New radiator, driveshaft with new u joints, tires, brakes, oil changes and that’s it! Parts are cheap. Let’s see a Tesla after 300,000 miles. If the battery goes tits up then take out a loan! I’m not anti EV but they have their place, we have a 2020 Chevy bolt which sees the majority of our miles now but it won’t replace our motorhome for travel or Chevy pickup for hauling.
@@richardwolf6269 There are plenty of Tesla's over 300K. Half a million is much tougher to hit, almost no on drives enough to do that on a vehicle before it way ages out. The avg yearly mileage for someone in the US is around 13.5K. That would be 37 years for the average person.
Yeah there are a couple that have but that is the exception and not the norm. Less than 0.2% of vehicles on the road get to 500000
Awesome!!! Thank you so much!!
Love the bearing retention detail! Huge improvement for reliability/life cost. Some bearings have had pins/nubs on the outer race to prevent spinning and I've never understood why more of them don't.
AMAZING! THANKS FOR VIDEO!
thank you sandy n team
Great info. Thank you to the whole team.
Our pleasure!
All motors can be "turned off" in motion; the difference between induction and PM is the magnetic drag while unpowered, as more clearly explained in another Munro video by Paul.
Really thanks sir ,god bless you and your family
Paul was really a great communicator in this video.
Be interesting putting two of these motors in one vehicle 😀
The supplier videos are excellent, the 3 D Services Group look to be extremely impressive.
Awesome wideo! Thanks for sharing knowledge! Greetings from Poland!
Excellent video.
Thank you very much!
Terrific overview.
The motor is a work of art
))) у вас плохой вкус. Это произведение маркетологов.
I'm glad we have you two as Americans. I hope you have contacts at the DOD -- they need some more folks like yall in their rolodex.
a cyberbeast costs 100k. a f35 costs $30,000,000. He has contacts, but it sure would be fun to see sandy do a teardown on A JLTV. I would 100% watch that.
I vaguely recall that in some previous videos Sandy mentioned he had worked on some military projects.
Thanks! Wondering if the dual motor will have a similar set-up only reversing the PM with the induction motor. Also wondering if having the induction motor up front turned off at highway speeds would help with noise vs having the PM running all the time.
The induction motor is noisier you have coil whine on the stator and the rotor while PM motors only have coils on the stator.
I believe I saw somewhere mention that on the 2 motor the induction is in the front and PM in the back.
Great video and I hope your hands getting better love the work you’ve been doing in that area too
I learn a lot from Munro, Tesla and others; Thanks! - With the Cybertruck I see a certain amount of over-engineering and a vehicle that no longer helps many people in their daily lives, and there is no blessing from Above. - On the other hand, useful vehicles for many people, in many regions and many terrains in the world, small and affordable, robust and simple, economical "Model 2" are needed! Small cars for 3, 4 or 5 people, with a length of 2.8m to 3.5m (!), that is my area of work and is on the rise. Because there are already enough big, expensive “dinosaur cars” that will die out, but the little clever things give the world hope.
YES!
I love this truck even MORE now that I see the innards
I am DYING to see the electrical system. DYING!!!
Do you love it when they use soap to lubricate the accelerator pedal and have to recall every last truck due to suds left over? Lmao junk
@wethomas3 I love to see someone take a risk, innovate, move our perception into new direction. Ford made a lot of mistakes that cost the lives of many people before they dialed in their trucks. The issues you mention are minor. If you think you can do better, have at'er, I doubt you could compete.
@@toxic.lobster wait, you’re telling me that a stuck accelerator pedal (the reason for the recall) is “minor”? Fwiw I’m not a fan of Ford either buddy. But let’s be honest, Tesla while they innovate in areas they are shoddy compared to the rest of the industry in many others. iPads on the dash and faulty misnamed “FSD” systems aren’t impressive. Keep it 💯
Could it be that the magnet is segmented internally, inside the outer plating, or made of a less electrically conductive material to reduce eddy curent losses?
How much eddy current loss there is in a magnet though? Doesn't the stator aim to keep the magnetic field quite constant relative to the magnets, and a constant field definitely doesn't produce eddy currents!
you don't put an outer metal plating on a series of magnets. Thats magnets 101 man. Any metal solidly connected to the magnets would distort the mag field. You could segment the magnets, wrap in saran wrap, and then dip in liquid steel, like they dip snickers bars in chocolate, but that would increase the distance from magnetic material to the lectric coils it reacts with.... so you wouldn't do that.
@mikeselectricstuff , Wow, you would be a great addition to the Monroe reverse engineering team. I can hear your whispering voice now discussing the finer details as the components are carefully disassembled. I have been waiting for the day you disassemble an MRI superconducting magnet on your channel.
I assume they did something to the metallurgy of the permanent magnet. That would be a low hanging fruit. Tweak the silicon content or add some exotic element and bam eddy current is reduced significantly.
I'm loving these
Hi informative video thank you.. from India
Thanks I’ve been waiting for this.
The thick aluminum end plates on the PM rotor, if it is closer to the stator will have higher eddy currents that is not good for efficiency. If cooling is the reason why not have some holes on those end plates.?
air permittivity vs aluminum permittivity, good observation
thank you for having sandy and other presenters in this one. sandy makes the material watchable.
Induction and PM synchronous motors sharing stator design is good, but not new - Tesla has done that since their first PM motor, in the Model 3. Like the Model 3, the axial lengths are different, to suit different flux density and power requirements. Long before Tesla, Remy (now BorgWarner) offered their HVH series (which is also bar-wound with hairpins) with a choice of induction or PM rotors using exactly the same stator. It's good to see Tesla continuing this practice, and finally catching up to use bar winding.
Is there a parking pawl in either motor? Both? For slippery coastal boat ramp use, I need to be able to lock all 4 wheels in park.
This channel is so cool, just found it. Seems like a great company, would love to work there!
I really enjoy this content. Nice job!
Glad you enjoy it!
Sandy is the man.
Thank you for educating us, great content!
I, to the segmented magnets!
14:50 Munro, are we sure there are significant eddy currents in a Permanent Magnet Synchronous Motor? The whole point of the word Synchronous is that the magnetic pole from the stator is rotating in phase with the rotor’s permanent magnetic field poles. If there is significant pole slipping (relative movement between stator and rotor) then I think there is a problem in design or control systems. Relative movement between the field and conductor is required for an eddy current.
We know heating is a problem that is why they opened up the end plate to get oil in. So there must be significant heating losses happening in the rotor near the magnets. Otherwise it would be much easier to fabricate the rotor all sealed up.
The magnetic field is still passed from pole to pole in the stator. Even when three or so poles overlap per winding, there is some field fluctuation passing through the rotor. So it's like amplitude modulation.
Is the solid magnet for the motor the reason there is a pulsing vibration at some speeds? This is reminiscent of older automatic transmission when you are traveling at a speed that is kind of between two gears.
yes! the motor break down.
So does the dual motor configuration have two of the fronts that are in the cyber beast? Do we know that yet?
The rear motor on the dual motor model is a single configuration of the induction rear motors used here.
At Investor Day in March 2023, Tesla announced that it planned to move away from rare earth metals in future motor designs. It would be interesting to hear if Tesla has managed to do this in the Cybertruck's motors.
Thanks!
Thank you!
So to be clear on the front differential- it's not limited slip, it's an electronic locker- giving a true Detroit locker type of performance?
This locker allows both electric motors to send combined torque to the wheel that grips. Only really needed if a single motor has insufficient torque, which is a weakness in the PM reluctance rotor design.
Great video as always! What about the accelerator pedal recall? It would be nice if you could show what is the issue
That has nothing to do with the drive units so it's not relevant to this video... and it's just a loose pedal cover.
That’s already been revealed. Production decided to use an unauthorized lubricant to help with installation of the break pedal pad. While it did help speed up production it also makes it possible for the pad to slip. Good news is that it’s a simple fix to prevent going forward and to correct the few thousand they have produced so far.
Seems to me that the pedal cover issue caused a backlog of Cybertruck to build up in the Austin GF parking lots long before this became public.
I love induction motors! Such a indestructible design, soo easy to drive without all the position-sensing hall sensor junk. Makes me happy that they still use them even in modern electric cars
I agree.
Another top episode :)
how does the grooves on the lamination of induction motor rotor cage eliminate torque ripple? and how is it better than skewed rotor?
It's not better just cheaper to fabricate. The grooves splits the magnetic fields.
I was taught that offset fins make the mechanical characteristics of the engine more "smooth"
Is installing two electric motors a better solution than one motor with an adaptive/adjustable differential?
This *has* to be watched at 1.5 playback speed. The anticipation was killing me.
The segmented magnets make great sense if the truck is only operating in hot climates. But Tesla uses motor inefficiencies to generate heat to put into the heat pump that keeps the battery and cab warm. It may well be that when they run the calculations, the extra heat is required more often and the solid batteries allow this to be generated faster and at less electrical cost. Rapid warm up and keeping the battery warm is very important. Not to mention creature comfort.
i assume at this point in the tesla story...if there's a design change or something that is "inexplicable" then it is for a damn good reason.
@rwhirsch Yes, but I think the reasons might not be instantly obvious. Is it simply cost savings? And is that simply to make the cars more affordable? Or cheaper to run? Or durability? Or better performance? And is that more power or greater efficiency? Tesla has greater integration in their engineering teams than anyone else, and I will bet there are many conversations that go, "Hey! I gained X% more something!" to which another engineer says, "Did you consider XYZ?" ...."Oh shit! Back to the drawing board" From which they end up with a third option that solves both problems. This is why I don't think many manufacturers are going to catch up all that quickly. Would love to see how the latest Mach-E compares to the first version. In particular the thermal management was a dog's breakfast. Even Ford admitted they missed an awful lot of details on the Mach-E generally.
great presentation what is the weight of a motor ?
Doesn't the aluminium shrink after being cast in the rotor? I imagine you'll have some gaps and resistances. Maybe also adding noise?
750000m LOL. Thanks, haven't laughed that hard in quite a while
I have wondered for a while, do you do any measurements on the gears? I have missed this being mentioned in the past. As a gear guy this interests me, I am so tempted to disassembly my tesla gear boxes to measure the gears.
Они достаточно массивные )))
little drill marks on the induction motor casting to maybe balance it like balancing a tire?
Yep. You'll see it on most (all?) motors.
Nice!
😍😍
Just as a clarification. When you say "noise". You are talking about electromagnetic noise?
Power is in Watt, why still use these archaic HP ? And which one ? The one = 746W ? Same for torque, Nm etc...
Because this America, and hp is the standard used by the general public to compare motor power. We use SAE wire guages in cars, and AWG guages for everything else. Those are standards in use. Engineers use the ISO standard for geographic position of only degrees, to five decimal places. And that's fine, but no navigators or cartographers use it. They use two different standards of degrees, minutes, and either decimal minutes, or seconds. Try to change standards. By all means.
@@lyfandethgreat for proving me right, you seem so confused ! 😮 Imagine this Tesla designed and built according to SAE NON METRIC standards (pre seventies) 😅 Thanks Ford who made the inch exactly 25.4 mm ! Imagine the mess if it was still based on the survey units ? As for the US general public , sad to compare its education level to the rest of the civilised world. I have a foot both sides of the pond.
I bet Munro's about to sell a whole lot of Cybertruck teardown reports once this series is finished.
Hope so
What about the accelerator pedal… ALL CT are recalled because of defect pedals 🥲
Great shaft
Cheers.
Great content, bring back the younger engineers please.
We feature many engineers on our channel.
When engineers sound like a kid in a candy shop. Buy it.
lol......
Just buy a Toyota and your fine!
@@brunoheggli2888 Toyota is pretty impressive tech... For 20 years ago. I don't suggest buying a Toyota. They'll go bankrupt in the next 10 years.
@@brunoheggli2888Firstly,"You're" Secondly, a fair bit of Toyota's reliability reputation is because they reuse everything they can. At least, early on, many things in various cars were the same, in engineering terms, but repackaged for different vehicles. I'm not sure how much of that they still do, but it makes me wonder how much of that explains why they are doing so poorly building BEVs.
@@brunoheggli2888been doing it for decades until Tesla… Lexus and Toyota now is really the what u get compared to my legacy Camry in the 90s… nothing exciting
Heat can reduce or destroy magnetism. So cooling them may also increase magnet life/power.
Any news on the battery configuration? You wanted to look under the sides of the pack to look for more cells there and check the engineering assumption of 192s7p for the configuration of the pack.
12:00 The first time I saw Sandy was before the Pandemic, on Autoline After Hours. . . Showing John McElroy Tesla’s “Secret Sauce”, pulling a segmented magnet out of his tweed jacket.
Just a question regarding the aluminum battery wire: why can't it also be stamped and then isolated?
What is the issue with just bending the concentric assembly? I don't see any downside.
Regarding the mechanical rear diff locking, why would that be needed when you have two servo-controlled motors with positional feedback? Surely they can simply command that they follow the same motion profile to come close to emulating a locked diff? The induction motors might not be quite as smooth as PM at low speed but I wonder why that wasn't done as it's a far cheaper solution, even if shaft resolvers of a higher resolution were needed? The bearing outer-race locking feature addresses a problem when over-sized ball-bearings are specified to handle helical-gear thrust loading, including cases where a tapered-roller pair would normally be used. It avoids the finicky preload setup on assembly but introduces a new problem because the minimum radial loading required to avoid outer-race spin in a slip-fit assembly situation is not achieved. This is a clever solution from Tesla as the spring pin even avoids needing to index the bearing during assembly. Thanks for the video, Munro team, alway interesting!
The reason is that when a wheel lifts off and traction is lost, a locked differential allows *_both_* electric motors to apply torque to the single tire.
It seem to me that locker mechanics was in the front permanent magnet motor section. I could be wrong.
@@redwood6737 good catch! I watched it again and you're correct that this was the front drive unit. They didn't show us the insides of the rear diff unit unfortunately.
@@boredKiwi thank you sir
@@boredKiwi thank you sir, I also got out the magnifying glass and when Sandy entered the picture they showed a spec sheet and on that sheet they’re showing 10,296 foot pound torque. The regular cyber truck there are actually showing 7435 Torque, not sure where they got those specs from but looks like they’re off by quite a bit. Not sure who did the misprint but I can’t imagine this Tesla putting out more than 1000 pounds of torque like my ram truck diesel Dooley Cummins.
At 16:18 won’t that dent in the outside of bearing be susceptible to quicker wearing ?
What do you think is causing the stuck pedal issue with the cybertruck?
Nice video.
Super!
I wonder if the rear door hinges can be moved to the front doors
🔥🔥
Cool
04:18 Isn't it 10 bars per slot in the hairpin of the PM motor of CyberTruck? From what I can see on the video, there are 5 rows of end windings there.