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This is a fairly simple yet absolutely genious form of engineering

"Differential plays an integral part", this made me laugh.

"The spider gear plays a pivotal role here" Well played.

You guys are the best in the business and concisely explaining complex mechanical engineering to simpletons such as myself. Bless your hearts.

Very helpful, clear illustration presented at a speed that doesn't require pause/rewind/play to understand. Thank you!

Its amazing how complex that helical gear design is .. And all the movement, same as transmissions and synchromesh Long way since the horse and carriage

Amazing channel! The animations really help me understand in depth without any confusion. I'm really thankful channels like this exist so I can learn from home

Golly, how do people come up with ideas like this?

This video is awesome. Now, I understand how a differential works. It was so difficult to learn from a book!. Congrats!

Thanks for pausing between statements. It keeps me from having to go back in the video. Good Vid!

Thank you so much for this video! This and the Limited Slip video explains EXACTLY what I wanted to know about differentials.

Finally, Now i understood the real working by this video in just single look. Thanks a lot to the animators, maestro and team.

One of the concepts that really benefits from animated video. For those people still baffled, I share that sometimes - the person who thought this up is sort of a genius but ignored the issue of traction on poor and variable surfaces. Here's my short version: In a STRAIGHT LINE travel situation, you can treat the 'spider' gear(s) (the little bevel gear mounted on a bar from the biggest or 'ring' gear) as simply LOCKED to both axle-end gears, as if welded. IE in a straight line, perfect surface traction, the twiddly bits in the middle are locked up in effect. DURING A TURN - or of course if one wheel slips in mud and the other is stuck solid ! - the trick is to realise that the little spider gear is going to 'lean on' whichever axle-end gear is the most steady (the stuck wheel axle), and spins against that to drive the axle-end gear it can. This situation means the little spider gear NECESSARILY drives it's way along the 'stuck' side, and TURNS THE FREE-SPINNING AXLE-END GEAR and thus the axle IN TWO WAYS - ONE with the spinning of the little spider gear about it's OWN axis or pivot, but TWO is the fact that the spider itself while doing this, is entirely rotated along with it's axis/bearing/bar that supports it, AS WELL. That, ladies and gentlemen, is why NOT ONLY does the free-spinning wheel on a differential axle freely spin, BUT SPINS at TWICE the speed that the wheels would if only both of the frickin' things would turn together! Hopeless. As 'LEarn' point out in the next video about Limited Slip Diffs, this is the major drawback. It's such a massive flaw even for occasional grassy-field parking, it's a wonder nothing was generally done about it for decades, the reason of course is that every tinker you do to this blessed thing, results in a headache you have to solve. My solution? Electric motors in every wheel and electronically control the relative speed to be theoretically correct. Every vehicle then is AWD and regen braking is guaranteed, and the wheels that spin only are turned as software dictates - eg at exactly the same speed as any other wheel if you are on snow/ice, so basically it will impose driving in a straight line while providing the maximum grip - the rest is down to tyres. You could even turn corners without turning the steering, by making one side of wheels go faster than the other. Still, good vid. It's not an easy concept to get your head around, despite drawbacks, whoever thought of it was a genius.

Wow. I mean wow. I always thought cars were relatively simple, I mean they were the first vehicle ever invented and car mechanics are usually blue collar workers. But this stuff blows my mind. I've been learning how cars work the past hour and it keeps blowing my mind, but this... the differential... I am amazed. I am also embarrassed to think I could not have thought of such a good mechanism that was also so simple. Come to think of it, I wouldn't even think about the wheels needing to rotate at different speeds. Amazing, it corrects itself purely mechanically. Cars are freaking amaziiiiiiiiiiiiiiiiiiiiiiiiiiiiiing......

ur videos have helped 70% of my lab report so far.. thank you sir

I'm not sure if maybe I'm just weird but I had always heard about differential and finally decided to actually look it up and see what it is and this is literally one of the most genius designs ever. I know I'm late to the game but humans are amazing.

when I see that I feel proud to be human

this lecture is very very helpful. Thank you

This video has been really helpful for me in understanding the role of differential gear in an automobile. Thanks a lot for such a good video.

No, THANK YOU! This was the first video I've ever seen on differentials that I could actually understand and follow!

This one video taught me more about differentials than my college ever did.

This helps a lot. Thanks. Best.

Woow! I feel smarter already! Thank you for the clear explanation and amazing animations.

this actually helps me understand more about the gears they make for RC cars to, thanks :D

This channel is awesome!!! A++++ Thanks very much!

Wow. This is brilliant.

Perfectly explained sir. Thank you for making such animation video for us to understand basic concept easily.

this helped me a lot...thank u for making me more clear abt differential gear systems.....more than a textbook reference using figures n diagrams

Best invention since the wheel.

thanks, that is the clearest video I have ever seen explaining the function of a differential gearbox ☺

The explanatios,examples ,the actual demonstrations by video etc., are. quite outstanding, to a layman like me. Its. quite amazing to understand the techniques used in this world for benefits of mankind.

Great video that makes understanding easy and simple. My only gripe with the video is this... ENGLISH ARE HARD!!!

Sorry if I'm just being really stupid, but how does the spider gear "know" to rotate on its own axis when the car is turning? Or is there some sort of mechanism involved?

This is great. I've always wondered how the gears in the differecial works.

This is the best explanation I have seen about how a differential works.

Pivotal role: 2:37 rotates on it's own axis.

can you make videos about the suspension types of the vehicle?

Great video. Thanks for explaining that so clearly!

Thank you for helping clarify so much information to me! I owe you!

Spider gear, spider gear, does whatever a spider gear does. Can it swing from a web? No it can't, it's a gear. Look out, here comes the spider gear!

Who ever made this lesson forgot there’s a word called “the” avoided oddly as in “spider gear is used to...” instead of “The spider gear is used to...” Still it a good lesson. Thanks

this video definitely is a great explanation on how a limited slipp dif. works !!

amazing invention.Hats off to the person who thought of it!!thanks guys for teaching me this

Rc cars have limited slip diff by simply running the spider gears in thick silicon oil.. the effect is adjustable by running different viscosity.

I am confused: what powers the spider gear to rotate at the correct speed in a turn? (Or is it just a feedback thing from the tire speed, but if that's the case there would always be a delay)

wow awesome video. Clearly define everything... speechless! ya... my life is now complete! Thank You Sir!

Probably the best visual, & explaination I've ever seen. Thx!

thank you!

Who in the hell could figure this out well over 100 years ago

Wow.... at last it became clear... 🤦🏻‍♂️ thankyou so much sir. This video was the best of all differential explanation videos on internet. Gbu......

The best chanel for engineers on KZfaq by far.

The English is pretty badly garbled in a few spots, but this was still very helpful. Thanks!

2:31 "the spider gear plays a pivotal role here" I see what you did there

This is a great video! I understood it perfectly. Thanks for making it!

I love the new computer simulations to show stuff. LOVE this video.. Boom my daughter gets it in like 5 mins.. I could never wrap my head around it either.. love this type of teaching..

So when people get welded diffs, is it the spider gear that is welded so it prevents the outer wheel go at higher rpm's, thus making it easier to drift?

So a welded diff, you just weld the spider gear so it cant rotate?

This is just simply amazing. I finally understand why the 3 gears in my Lego Bugatti Chiron are assembled the way they are. Thank you Lesics!

this is the best explanation of open differential! thanks

The lack of the word “the” and the letter “s” in this video is borderline criminal.

There's a video on this that was apparently made in the 1930s and the explanation from that one seem a lot simpler?

please include in the video fluids and how there aging impacts the function over time, show what happens when fluid is not changed or if a defect somewhere in the machine exists. phenomenal videos btw.

best vid on diffs ive seen so far. subbed!

Oh spider gear, your so good to me

Engineers are so much more intelligent than I am. lol I never would have thought of this.

The best video on KZfaq to explain how a differential works. What language is this translated from? The lack of definite articles ("the") is a little off-putting, but the whole video is still so much better than any other it still gets an A+ in my book!

wonderful, I didn't know how a differential work, and the main function of it I really learned something. FUTURE MECHANICS

I've seen several of these videos, and I still don't get it because the Spider gear appears to just go in circles and be rotated in place rather than Drive the axle. Plus, how can one gear with a fixed number of teeth drive two shafts with fixed numbers of teeth and yet one shaft if turning slower than the other . I don't doubt it works, but these engineer types need to explain it better become they sound like my High school Teachers in the Tech classes and Electronics , Chemistry , Physics , and Trigonometry that just repeated what was in their Books or spoke as if we already knew this stuff and the Lexicon that went with it . I watched a video by a very smart Prof that tried to put a picture in the minds of the Students as to see the reasons for why something happens and the expected end results that the formula can prove to check what you did. In just 10 minutes I understood something that never made sense in Electronic class and had puzzled me for over 30 years. If we had more Good Teachers that did it with a passion in their field of training , there would be more Bad students getting motivated to learn more in class because they are taking it in and feel better about themselves when their Marks go up . The City I live in has reduced the Educational system to Jobs-4-life by people drawn to it for the money and gold-plated pension , not all are like that but just this year the Media reported on a Line item in the Budget for Math Teachers to be paid in a Summer Course they can take to learn the basic Math skills expected by grade 8 . These are High school Math teachers that read from a Book what the Course material is end when each Lesson starts and ends. They don't have the skills to answer questions about the Math or show the students WHY a formula is used and how to check the results . We have Diversity Teachers hired to meet quotas but have poor English skills , the exams are dumb down while Teachers now coach students to help them pass Classroom tests even when it's multiple-choice and it's skewed to have absurd answers to reduce the choice to a 50/50 chance for the right answer. I think that if the fixed parts were in a Unique color and the moving parts were in color as the power flowed through the unit in stages. I could see it better in my head because right now the axle seems like the Solar gear as the Spider gears are the Planet Gears acting from a force and not drive anything.

Think about the guy who invented this..really God Gifted intelligence

Thanks that was a very good explanation of how a open diff. Works, I race rc car's and this helps understand how we can tune the diffs with different wieght fluids

Great vid, subscribed. I wish you wouldn't drop the word "the" in so many places, but that's beside the point, I guess. This was so clear and easy to follow. I learned something. Thanks!

Before I couldn't even say engineer, now I IS one!

How spider gear rotates in own axis?? I mean what causes it to rotates?

You are the beatles of the explanations. Keep it up!

Just marvelous.Thank you for the series of video on transmission system. you have worked too hard to make these videoes.

USE THE WORD "THE" GODDAMNIT

This guy really hates the word "the"

The Differential speed, variation in Rt wheel & Left wheel speed , demo is very informative

اختراع جميل جدا رغم بساطته لكن التعقيد في فهم الحركه . الصراحه عدت الفديو اكثر من مره ياله افتهمته . شكرا جزيلا عله الشرح المفصل اجمل قناة واتمنه الفديوهات كله تترجم ل اللغة العربيه .

How does the spider gear know when to rotate on its axis

Welded diff life

It amazes me how much is going on to transfer all that power. How many components that could break!

this is the most detailed explanation ive ever seen in the history of automotives

I was about to kill myself but thanks to this video I no understand differential gears.

Learn engineering.... but not English.

awesome mechanism and fantastic explanation also. Love you brothers.

Thanks I'm 13 and I love watching this so I can learn about this😁. Keep going on!

Fantastic! GOOD JOB and THANK YOU!

Thank you for the instruction. That is very helpful

Hi there. Very nice vid. Mechanical engineering never was my strong suit, but you guys explain it in a very comprehensible way! Good channel and excellent vid. Thumbs up!

this is genius. I never knew how this worked and learning how is really cool.

Great video that makes understanding easy and simple.thank you.

A lot of things like this its really a testament to the ingenuity of some very smart people.

Its s really a excellent vedio I can understand so esaly tht I nvr frgt... so it hlps me to gv my automotive exm ... thnks fr uploding ithos wonderful vedio

That was so clear! Thank you

the way you explain is very understandable

Simple and clear explanation! Thank you.

what an amzing animation..my job would be difficult wdout ds..thanx a lot learn engineering for d work.....its clearly understood now...iam an budding mechanical engineer..subsription to your website has been so helpful to me

your videos are the simplest and best !!!