Video is 86 years old, still better explained than most people would explain it today. Easily the best tutorial on the internet. Great job to the creator.

made in the 30's still better than modern videos

They showed you how, they showed you why and they started off making it fun. They set our brain into ease first with some acrobatics in the beginning. This video was more entertaining to watch then any reality show out there.

Prime example of how old doesn't mean outdated. This is by far the best explanation video here on YT explaining how an open-diff works.

*Narrator:* In order to reduce the jerky action caused by wide spaces between the spokes, we will put in _more spokes_ *Me, taking notes:* Genius.

there are no videos of modern day that make such great quality learning anymore...

All explanations of complex subjects should be like this tutorial: start with a simple concept and slowly add in details step by step until the whole thing is explained. This tutorial was beautifully done despite its age.

Back then, they explained things in a way that even an idiot would understand. And that appeals to me.. for whatever reason.

Truly is BEST tutorial. Instead of just giving you the way differential works, this video explains how and why the differentials are designed like this.

my goodness this is a quality video. sober, yet engaging. i need to watch it again. and whoever invented this system did a wonderful job.

MOAR SPOKES

engineering problem? more spokes

Engaging video that doesn't need humour or distractions to keep the audience interested, unlike today's videos that think we have a very short attention span.

I really just learned basic differential in a 9 1/2 min. video... Amazing.

i just love these old films because they were better at ilustrating how stuff works wile still making it interesting to listen to :)

For the year this was made, it really is an excellent piece of film-making. A lot of work and expertise went in to this.

i have to say it is the best tutorial about how the diferntial works, even better than any 3d example

This goes to show that modern instructional videos suck. This video describes everything in a profesional way without having to loose the viewer. I give this video a good 100 spokes out of spokes on a gear

This is so simple and fucking GENIUS.

This is an excellent explanation and is superb editing for the 1930's.

These videos are so much better than most of the lectures and powerpoints of today

I was born in the 70's but goddamn I love the pre-50's! Especially the advertising tactics. Don't get me wrong, the US had plenty of propaganda, but the advertising of consumer products was done using education and demonstrating benefit, not this preying on the emotions and insecurities shit you see in today's marketing.

ive learned more about cars and their components from watching these black and white films than almost anything "new" on youtube, including complicated things like torque converters. mostly due to the use of physical models that go from simplistic to show the basic principle and get more advanced to show exact operation and all features as opposed to cgi or just pointing out parts of a disassembled unit. makes me wish we could go back to that age where people actually learned things about what they owned and knew how they worked so that instead of replacing the whole engine when it breaks down they know just to replace a gasket or whatever.

I have watched a dozen super modern fancy animations and still didn't understand it. But now I do. Simplicity is key.

I love how they actually mocked up the axle running through the passenger compartment.

over 70years old and still the best tutorial ever

This is brilliant. This is how you explain something. If you want more people in STEM, you need teachers like this.

I went to a tech school in 2011 to learn automotive repair. This was the video they used. 90 years old and still my go to for explaining it to others.

This makes so much sense now. i was like how the F does a differential work and then i found this video. i can't find a video better than this one. amazing for its time.

Still the best explanation of how a basic diff works on the entire internet.

Best explanation I've seen in 69 years!! I always knew what a diff DID but never quite fully understood the :how" bit, Now, thanks to a 1930s film, I do!

Once you watch this video you'll never be able to forget how a differential drive works. Amazing explanation....

I don't usually comment but that was easily the best explanation of a differential I've seen. Love how they go from original problem, to solution, to refinement and so on. That procedural explanation was fantastic, feels very practical an unencumbered. And the effort needed to make all those models and the dramatic way they run on the sides of the wheels at the end there all to illustrate a point... beautiful.

Now I understand how differential works, thanks to this old beautiful video...

I wish they would make more videos like this today. Brilliantly concise and so informative.

Hopefully, this amazing technology will one day make it's way into modern vehicles.

I've been working on my own cars-and with my pops on all my family's cars-since I was very little (something I'm doing with my son, too!). I've seen many diffs taken apart, and I understand well what they do and their purposes, but I never completely understood HOW they work until now. Thank you 1930s General Motors, and thanks to the people who still appreciate these great old engineering videos enough to post them so other people (with good taste) can enjoy them, too. They really are super cool, and it's sad you don't see vids like this anymore from car companies explaining their new tech... Thanks again!

No wonder people seemed so smart back in the day, with the simplicity of explaining complex phenomenon everyone was guaranteed to learn! These these its all about how many words you can fit in one minute that qualifies as a good explanation.

After 45 years I find a really good explanation of a differential 👏👏👏👏👏

Brilliant!!! Never explained better. This explanation was spot on, it used a totally unrelated event that is linked to the differentials in principle. That is of the riders, it got you understanding the concept in small increments as it went along and that is one of the best ways to learn anything. Get people seeing relationships with things seemingly unrelated that they are more likely to get and incrementally increase the complexity while still using examples we can relate to and clear concise language. Nowadays everybody wants to show how smart they are by using all sorts of technical jargon only insiders know. Exceptional piece if you ask me. Funny how dumb we get the more we know and the more advanced we get.

it's seems to me that the old instructional and howto videos do a better job at explaining things then the videos today

i just came here after watching this topic on learn engineering. and this is way better. i mean way better.

this is actually the BEST TUTORIAL on differential.. great work :)

OMGOMGOMG, exactly what I've been looking for all the time! Geez, I swear, a 1930s B&W video does a much better job of explaining things compared to videos nowadays. Thank you, uploader!

This is absolutely amazing.

Excellent explanation! I was able to understand this tutorial. THANK you!

Very clear easy to follow & understand. Videos like this should be brought back & shown in schools today. Never know who it may help to inspire the next..........

See THIS is what I was looking for. Why are all of the modern videos so hard to understand? This is simple and I love how there is a SIMPLE demonstration.

omg this guy needs to teach me everything in life. he broke that down so well

I understood this video's explanation of a differential more than those animated versions lol

It's really funny to me how awesome clearly these old videos can explain things

It's 2020...and I can promise you that no video could be better than this!!...such a great quality and ease of understanding...love it!!!

I find this absolutely fascinating!

I love old videos like that. All this CGI crap has no human touch. I was actually half expecting that couple at the end to be running on the drums while lighting a Lucky Strike and sipping a scotch and soda.

Excellent video. Clearest explanation of a diff. I've ever seen. I love the "stiff" quality of the commentary. Of course he annunciates really clearly to compensate for the lower sound recording quality available at the time.

This video really helps you grasps the concept on how a differential works. By explaining in simple terms in sporks, to eventually transforming it to a more complicated looking gear differential. Yet essentially the principle is the same.

OMG :O Cant believe this video was made in 30s :O . The best clear explanation of differential gear out there (y)

Well, how about that. I have worked on cars all my life, and even when explained to me I never quite caught on to what exactly went on inside that chunk. When it's laid out in an A- B-C method it's not complicated at all. Thanks for that.

yknow, im glad i gave this video a chance. my first thought was its old so maybe its outdated, but i stuck with it. one of the best explanation videos ive ever seen.

Wow...so brilliantly, simplified , well explained tutorial. The basics explained so well. More such quality videos should be there on several topics.

Excellent explanation must say this was d best explanation ever regarding a differential. HATSOFF

feel free to look up the turbo encabulator to understand more about the mechanical workings of your vehicle :)

I had NO IDEA why this was in my queue, but I'm glad I watched it anyway. Fascinating. Engineering is awesome when it's explained well.

Loud and clear. I grew up with a lot curiosity and this was the most thing that drove me crazy.

Why can't everything be explained like this.

Cause Chevy didn't make a 327 in '55, the 327 didn't come out till '62. And it wasn't offered in the Bel Air with a four-barrel carb till '64. However, in 1964, the correct ignition timing would be four degrees before top-dead-center.

I have watched many videos to understand differential gear out of all this is the best video to understand in a very simple way. Awesome Creation.

Oh my goodness one of - if not the best - tutorials I've ever seen. Absolutely fantastic!

better than modern 3d videos

This is quite simply a beautiful masterpiece; I think I'm in love with differentials now :)

Seeing this video makes it so much easier to visualise how a limited slip diff and locked diff works. Wonderful video. Wish I had seen it way back in, well, the '30's.

In my aim to learn useful information on a variety of topics (history, tools, technology, techniques, etc.), I come across many videos on KZfaq from pros, hobbyists, enthusiasts, DIY'ers, etc. covering a wide range of categories across the spectrum of our collective knowledge. I will scan through comments if I find added value, but very rarely comment (usually find a bunch of trolls). After watching this old school video I felt compelled to comment on its exceptional effectiveness in the explanation. My feedback relates to both the instruction provided by the narrator as well as the visual walk through of the problem followed by the progression of improvements to the final solution. We rebuilt an off-road buggy style go-kart with a live axle setup (axle rotates both rear wheels at the same speed). The problem at the core of this video is very apparent with the small scale setup of this kind of go-kart - you can easily push it on the pavement in a straight line, but cut the steering wheel and one rear wheel starts dragging, virtually stopping the go-kart. I understood what the differential does, but now I have a solid understanding of how and why. This video was outstanding, but I will add, take note of the video description, as the first minute or two is a bit slow. Just hang in there or skip ahead. Anyone wishing to learn the fundamentals of how this works won't be disappointed. Thanks for uploading this video. I very much enjoyed it.

This video is far, far better than the rubbish that is put out today. How good was that clip? Amazing! Thanks for sharing!

i feel like i learn more on youtube than i do at school wtf

The differential is such a satisfying piece of engineering and now i understand it completely too! Awesome! 😄

I’ve watched a lot of differential videos on KZfaq and this is the best explanation I’ve ever seen/heard. All the others don’t even come close

Back when America was great!

wow may be so called outdated but works way better than any modern video lol

this is the best differential explanation I have ever seen. So damn intuitive and well explained that even a child could grasp the concept - it's amazing that this was made back in the 30s.

Indeed one of the best tutorials. They have worked hard to explain each of the basic steps. Very well done!!!

Machines rule the world, we rule the machines. Proud to be a student of Mechanical engineering :)

I have watched both modern computer simulations and this video from 1936. Believe it or not....I learned and understood more from this video than the high tech one. Awesome video, Sometime, simpler is better. Awesome.

One of the best videos I ever watched! Kudos to everyone involved in making this video and the person who has uploaded it. Thanks a tonne

it is indeed the best tutorial on this subject, and the best transmission explanation video is also from this era.

this is beautiful

once upon a time we had some damn good ideas here in america.

Almost from three years i wondering that type of video no video can understand me but this is one video in very simple way salute you sir

I’m very impressed with how informational this was considering its age. It made it very simple to understand.

"In order to reduce the jerky action cause by wide spaces between the spokes, we will add........MORE SPOKES!"

Respect your gears.

This is the best and easiest way to learn the car mechanism system.Thanks for uploading this best video on KZfaq!

Till the date this is the best video explain differential working. Non technical persons also can understand. Great work

i like the way he says spokes

And if you get this we will move on to positraction for super burnouts!

They went through a lot of effort to build all of those models. Very well done. I love watching this video.

This explanation is clearer & more logical than many modern videos. I came here because Steve Mould's explanation of spintronic junctions wasn't good. He said they're like differential gears but should've described it like this old clip did.

that was amazing explanation.

tried to make this in besiege, it explodes everytiem.

WOW WOW WOW!!! I have been looking at diffs numerous times to understand how they work, but each time I reach a point I get confused.... This tutorial is horribly old, but is awesomely great! In just a few minutes I get to understand a diff finally completely!! :-D thanks thanks thanks

simple,very effective and to the point..GREAT tutorial..i understand the differential gear system a whole lot more now.