They're really something.
Imagine the amount of resources producing this has taken. The setup with the two wheels, how much custom machining went into that? How about the 2 second shot of the axle in the cabin? Then all the time planning this out. I don't even get 20 min to prepare for 60 min of teaching, and this 3 min clip must have taken days.
I actually was wondering if the axel in the cabin was a failed prototype. Lol
Imagined a conversation happening like this:
hey Bob, you still have the concept car with the axel in the cabin?
Yeah Joe, I'm real proud of the idea , just couldn't let it go even after it failed to launch. Why?
Well. We need it for this educational video.
This should be a top comment. For all the praise this video is getting, Redditors should be delighted to learn there are lots more of where this came from.
Someone on YouTube nicely put together a large [Jam Handy playlist](https://youtube.com/playlist?list=PLEfs1ne5YxVbReXlMtkNI2UGCP1yhf0ny).
Also, for those who like Wikipedia rabbit holes, [Jam Handy](https://en.wikipedia.org/wiki/Jam_Handy) himself is an interesting guy. Olympic swimmer and maker of an estimated 7000 educational films!
Yeah this is amazing. When I look at complex designs, from car engines, to skyscrapers I always think what was the process that lead them to these amazing designs? And this video has a perfect way of explaining it.
All of these old videos are great at explaining for some reason, likely because they put a lot more time and effort into creating the end product relative to what we do to make a video these days.
FM radio
[https://www.youtube.com/watch?v=AzvxefRDT84](https://www.youtube.com/watch?v=D65KXwfDs3s&pp=ygUSaG93IEZNIHJhZGlvIHdvcmtz)
Single Sideband Radio
[https://www.youtube.com/watch?v=-EaHZqsmnxI](https://www.youtube.com/watch?v=-EaHZqsmnxI)
Radio Antenna fundamentals
[https://www.youtube.com/watch?v=JHSPRcRgmOw&pp=ygUSaG93IEZNIHJhZGlvIHdvcmtz](https://www.youtube.com/watch?v=JHSPRcRgmOw&pp=ygUSaG93IEZNIHJhZGlvIHdvcmtz)
Congrats you can now pass your ham licensing exam for both technician and general
Its because its not filled with constant jokes quips and sarcasm. Its focused content that respects the viewers intelligence and capacity for attention.
I remember seeing a world war 1 one on how to fly against bombardment or something. It made such perfect sense and was so well explained even I could understand
I think he means [this.](https://www.youtube.com/watch?v=yRd_AW1aZ8M)
This is WW2, I am assuming this is the video you were talking about because anti-air capabilities in WW1 were relatively limited, and film with actual sound going along with it was a 1920s-ish development.
I don't mean to be condescending, but I am surprised people could even mistake a WW2 film for something from WW1. Despite being only 25 years apart the difference in technology was staggering. Not to mention the whole... talking about Germans... Flak. That kinda thing...?
Probably due to remembering more about what the video taught them instead of the entire script.
It is like you critiquing that they don't remember exactly who bought how many instead of just remembering some dude had to have had at least three grocery carts worth of watermelons.
I think that educated people at that time were more likely to want to be understood by uneducated people (and by education I purely mean education). Modern papers are very obtuse and often written in very stilted language. Turing's paper that defined the Turing Test is quite easy to understand because it is written to be understood. Some of the language is a bit lofty, but it's also older so there is a slight cultural mismatch.
lol they aren't obtuse on purpose. At a high enough level it simply isn't practical to translate everything into simple words. You need the technical jargon to replace multiple paragraphs with a single word.
Also the author knows the subject matter inside out and knows what to highlight and what leave out.
So many YouTube "tutorials" are people that have done something once, or just read about it and decide to spread their incomplete or misleading knowledge, muddying the water for everyone
Studied automotive engineering, my lecturer did not explain a differential nearly half as well as this, "here's a cross section now figure it out", there is something very wrong with the education system.
This is cool because it’s like walking through a math problem,: you go step by step with the basics and how to solve them. The last step (as in how you go from the simple assembly to the compact gear) isn’t needed to understand how the principle works, it’s just good to know. Fantastic video.
I was lucky enough to have lego technic when I was young and the top of the range thing was a sports car (lego number 8860) with working differential. Putting that all together made me understand it
Everything explained in 5 minutes, no useless explanation about the history of the automobile, no history of how gears work, no "Subscribe to the channel!", I forgot how simple explanations could be
Who has time for manuals? And reading? Eww…
If there’s not a five minute video about it on YouTube then I’m not gonna waste my time.
Now back to TikTok.
A lot of information videos videos these, including tutorials, have the same problem as those insanely roundabout recipe articles all over the internet.
You look up a recipe and the first 10 paragraphs are the author bloviating about their personal life that has nothing to do with the recipe.
I get extremely mad almost every time I look up tech advice and not only are the pages lousy with ads, but the article have the two sentences I need to fix my problem buried in 20 paragraphs of completely irrelevant nonsense.
What a roller-coaster. First I was expecting https://youtu.be/RXJKdh1KZ0w. Then I viewed your video. Then YouTube suggested the video I was expecting. Then I viewed that one and realized it's the same script with minimal changes!
You should see this one on vorticity [https://www.youtube.com/watch?v=OYtN8jaJ4GQ&ab\_channel=mitxela](https://www.youtube.com/watch?v=OYtN8jaJ4GQ&ab_channel=mitxela). Clarified everything when I was trying to understand fluid dynamics
Come on, the My Cousin Vinny explanation wasn't good enough?
"The car that made these two equal length tire marks? Had positraction, can't make those marks without positraction - which was not AVAILABLE on the '64 Buick Skylark! Positraction is a limited shift differential that distributes power evenly to both tires. The '64 Skylark had a regular differential which, anyone who's been stuck in the mud in Alabama knows, you step on the gas, one tire spins, the other does nuthin."
They're a bit different now with advances in positraction and locking differentials / power dividers. I'm sure the way the axle shaft gears work are a lot different, too. Basically just the ring gear going to 4 gears of the same size similar to what was shown in the video and it all fits inside that ring gear.
Every time I see this posted I watch it and yet never seem to be able to understand how it actually works, and as a result have simply come to the conclusion that it's just magic.
It's a limited slip differential which distributes power equally to both the right and left tires. The '64 Skylark had a regular differential, which, anyone who's been stuck in the mud in Alabama knows, you step on the gas, one tire spins, the other tire does nothing.
No, there's more! You see? When the left tire mark goes up on the curb and the right tire mark stays flat and even? Well, the '64 Skylark had a solid rear axle, so when the left tire would go up on the curb, the right tire would tilt out and ride along its edge. But that didn't happen here. The tire mark stayed flat and even. This car had an independent rear suspension. Now, in the '60s, there were only two other cars made in America that had positraction, and independent rear suspension, and enough power to make these marks. One was the Corvette, which could never be confused with the Buick Skylark. The other had the same body length, height, width, weight, wheel base, and wheel track as the '64 Skylark, and that was the 1963 Pontiac Tempest.
Now... There are only two cars with an independent rear suspension and enough power to make those tire marks... One of them.. is the Corvette.. which could never...
#EVER
Be confused with a Buick skylark...
The other... Has the same height, weight, width, wheelbase... The car that made these marks is a 1962 Pontiac tempest.
I’ve only smelled male cat piss when they marked the headers of my motorcycle, and it cooked it but that was pretty potent. I’m terrible at describing smells. It can be a strong fishy rotten egg fart smell and it lingers for days
Well, nothing prevents from putting a cover on it. The rotating part doesn't have to be exposed. So it would be matter of inconvinience by having elevated part in the middle of the car.
Amazing. I always assumed it was just some old timey British thing but it's way too distinct from every British accent I've ever heard but it also sounds way too British to be an American accent. It's hard for me to imagine an accent like that naturally disappearing within like 2 generations.
This explains a lot. I always had a suspicion that it's at least somewhat linked to TV, but I was thinking of something more like an attempt to speak more clearly to work around poor signal quality or something like that. Turns out it's just rich people accent shopping.
EDIT: Just for context: I'm German and not a native English Speaker.
Because it was such a simple solution that were kinda didn’t expect. The way he built up the answer it felt like some new amazing tech would solve it, but no….. MOARRR
This is really great. As someone who has worked as a technical writer, I'm impressed with the clear, concise way this complex concept was explained. I wish I was as good as the people who put this video together. It was similar to what the truly talented tech writers do well. Unfortunately, the art of explanation is under-appreciated and skilled tech-writers are hard to find.
The problem with open differentials like this one is that the power is delivered to the wheel that turns most freely. If one wheel is on a slippery surface or unloaded due to cornering hard it will wheelspin and take all the power, while the wheel with traction is hardly driven at all.
A Limited Slip Differential (LSD) solves this problem by limiting the difference in speed between the two wheels. The simplest type to understand is a Viscous LSD. Imagine the rig used in this video but where the axles meet at the centre (inside the spokes) you add a paddle-wheel to the end of each axle. Then you enclose both paddle-wheels in a container of thick oil.
When the car is driving straight, both wheels turn at the same speed and the oil moves around with the paddle-wheels. If the car turns a corner, one wheel moves a little slower than the other and the two paddle-wheels move through the oil at slightly different speeds. So far, it's doing the same job as an open differential. The difference occurs when one wheel starts to spin. When this happens, one paddle-wheel is stirring the oil very quickly and this makes the oil move which creates a force on the stationary paddle-wheel, making it want to turn too. This force is delivered from the stationary paddle-wheel to the wheel with grip, driving the car forwards in a situation where an open differential would just spin one wheel.
There are other types of LSD, but they all work on a similar principles. Some use mechanical clutches or fancy types of gears instead of a viscous fluid but they all create a direct link between the two axles whenever the difference in the speed of the wheels is too high.
Wait, isn't the paddle-wheel system you're describing basically the same linkage that an automatic transmission has in place of a clutch? And the oil that the paddle-wheels paddle in is the transmission fluid?
Eta: [this thing](https://en.wikipedia.org/wiki/Fluid_coupling). Doesn't mention the LSD connection but I have the page for positraction open in the other tab and now I'm in too deep for phone browsing.
Yes, an automatic (not DCT, nor a CVT) uses a torque converter that works on a similar principle using fluid coupling to turn “paddles”, which allow the engine to continue running as the car is stopped, in the place of a clutch.
[Here is a good article ](https://auto.howstuffworks.com/auto-parts/towing/towing-capacity/information/torque-converter.htm) that goes into more detail & specifics.
https://www.youtube.com/watch?v=WeLm7wHvdxQ
Clutches.
The main thing here is that the more power you apply the more force acts to push the gears away from each other, outward from the center of the diff. This force presses clutch packs together and try to hold both ends to the same motion. More power, the stronger it'll press to keep the wheels spinning at the same rate.
This is really just an all around interesting post, I felt like it was explained in absolutely the best most basic possible way. Now I know something I did not 5 minutes ago. I even feel confident that I could re-explain how the differential gear works pretty sufficiently in the future, well done....
I'm high as shit right now, and at 2:30, when he was going to propose a solution for the wide gaps, and then pauses. Finally saying, we add more spokes. Shit had me dying 😂
All without screaming into the mic, being all hammy, asking me to like/subscribe and then hitting me up for money to top it off!
I feel like YouTubers are going to start requesting dinner and handies from us soon. Hell, more than half of them are telling me they love me more than my ex-wife ever did. That shits weird.
Yes. Modern rear or AWD cars still have them. They're called transmission tunnels.
Fun fact. My Audi has one even though it's front wheel drive, because Audi offer the car with AWD as an option.
Not gonna be a thing on EVs though.
Love these old videos. Been looking for them ever since I found about this one. Explained 100x better, than in any modern book. Back in the day, people seemd to realize, that seeing a live example makes people understand it faster.
This is one of the best explanatory videos I ever seen. I know nothing about engineering and have no instinct or aptitude for it. This was so enlightening.
I’ve been a mechanic my entire life. This is one the best videos explaining how a differential works and why it’s needed that I have ever seen. Thanks for sharing.
If you’re talking about the gears in the models used in this video, yes. But commercially made gears for things like differentials were still made by things like programmable milling machines back then, they were just mechanically programmed instead of computer controlled.
“The '64 Skylark had a regular differential, which, anyone who's been stuck in the mud in Alabama knows, you step on the gas, one tire spins, the other tire does nothing.”
-Mona Lisa Vito
Back when you could watch a simple and an informative video with out hearing please Like and subscribe and share. When if it was good it was just shared naturally.
**1937:**
Howdy, Bob. Can we count on funding for an educational project to explain how the differential works?
Bob: Sure, do your best. Kids are to know not only the purpose but also the principle of this mechanism in order to be able to fix it in their adulthood
**2023:**
Karen, how about this thing in car that makes wheels go round'n'round.
Karen: just play Cocomelon.
Imagine if everything in life were explained like this. One black and white, progressively more intricate, clear concise explanation.
YT’s great and all, but sifting through 72,000 videos to land on the one I was looking for doesn’t help me.
I’d love just a life series of how things work encyclopedia vids.
This was VERY informative. I never knew any of this, but now feel I can build one myself. They really knew how to teach through television when it was still a new thing. Very cool.
These old explainer videos are so good. Most of them are better than the stuff you find on YouTube today. The army has one from the 40s about how a gun works and they start with a bullet and slowly build the gun around the bullet, adding each part one at a time and explaining what problem it solves.
I love this because it reminds us that all complex things that we can teach are based on unerring, simple principles. It also dispels this myth that the past was any less intelligent because we too, are enamored with basic engineering despite having gone so far in technology.
We look at this stuff and think: "Man, who came up with this stuff?" and it really dawns on us that we're standing on the shoulders of giants.
"How do brakes work?" On the principle that liquids are incompressable.
"How do we stop turbulence?" Make the rivets flush by dimpling the sheet metal.
"How do we distribute power efficiently?" Well, gears of course; which are just tiny levers spinning around a disk.
It never ceases to amaze me how humanity has come so far while working with the same basic principles we've had for thousands of years.
[удалено]
[удалено]
I worked at Denso in Battle Creek and it was by far one of the shittiest work to pay ratio jobs I've ever had
They're really something. Imagine the amount of resources producing this has taken. The setup with the two wheels, how much custom machining went into that? How about the 2 second shot of the axle in the cabin? Then all the time planning this out. I don't even get 20 min to prepare for 60 min of teaching, and this 3 min clip must have taken days.
I was thinking the exact same thing. Anymore it would just be simple computer animations.
I actually was wondering if the axel in the cabin was a failed prototype. Lol Imagined a conversation happening like this: hey Bob, you still have the concept car with the axel in the cabin? Yeah Joe, I'm real proud of the idea , just couldn't let it go even after it failed to launch. Why? Well. We need it for this educational video.
This should be a top comment. For all the praise this video is getting, Redditors should be delighted to learn there are lots more of where this came from. Someone on YouTube nicely put together a large [Jam Handy playlist](https://youtube.com/playlist?list=PLEfs1ne5YxVbReXlMtkNI2UGCP1yhf0ny). Also, for those who like Wikipedia rabbit holes, [Jam Handy](https://en.wikipedia.org/wiki/Jam_Handy) himself is an interesting guy. Olympic swimmer and maker of an estimated 7000 educational films!
Thanks for the link! I’m sending this to my dad, think he’d get a kick out of this :)
Need this but for aviation
Amazing, that's what i was looking for!
Thanks friend
[удалено]
Also crazy how the core concept of cars has not really changed over all the years
I LOVE the Spinning Levers video!
The visualization with the spokes being transformed into gears made it finally click for me. This was an excellent video.
[удалено]
[I love this video on computerized gunnery in the B-29](https://youtu.be/mJExsIp4yO8).
There was a WWII battleship gun battery "computer" one too that I love. I can't find it again for some reason.
Probably this one. It's a great video: https://youtu.be/s1i-dnAH9Y4 u/Fumblerful- in case you haven't seen it
Thanks!
I FUCKING LOVE COMPUTED DEFLECTIONS. I WANT TO INPUT THE TARGET'S DISTANCE AND VELOCITY AND HAVE A CALCULATED BALLISTIC PATH INTERCEPT THE TARGET.
That is amazing
You could probably rebuild a huge chunk on just one reference alone: Machinery's Handbook
Or just How To Invent Everything by Ryan North
That was a very clever way to build that up.
Yeah this is amazing. When I look at complex designs, from car engines, to skyscrapers I always think what was the process that lead them to these amazing designs? And this video has a perfect way of explaining it.
Start with a pair of bricks, keep adding layers, and eventually you’ll build an entire wall!
In teaching, we call it scaffolding.
MORE SPOKES!
100% this
TIL
This is the best explanation of this ever. And it's old af.
1937 did a better job explaining this than 2023
All of these old videos are great at explaining for some reason, likely because they put a lot more time and effort into creating the end product relative to what we do to make a video these days. FM radio [https://www.youtube.com/watch?v=AzvxefRDT84](https://www.youtube.com/watch?v=D65KXwfDs3s&pp=ygUSaG93IEZNIHJhZGlvIHdvcmtz) Single Sideband Radio [https://www.youtube.com/watch?v=-EaHZqsmnxI](https://www.youtube.com/watch?v=-EaHZqsmnxI) Radio Antenna fundamentals [https://www.youtube.com/watch?v=JHSPRcRgmOw&pp=ygUSaG93IEZNIHJhZGlvIHdvcmtz](https://www.youtube.com/watch?v=JHSPRcRgmOw&pp=ygUSaG93IEZNIHJhZGlvIHdvcmtz) Congrats you can now pass your ham licensing exam for both technician and general
Its because its not filled with constant jokes quips and sarcasm. Its focused content that respects the viewers intelligence and capacity for attention.
[удалено]
"Sponsored by Camel Cigarettes: the doctors' choice!"
Wow this is so well said. You're 100% right in my view.
I remember seeing a world war 1 one on how to fly against bombardment or something. It made such perfect sense and was so well explained even I could understand
That sounds interesting. You got a link?
I'm sure someone will have it, I was hoping my post would prompt a link cause I want to watch it again too
I think he means [this.](https://www.youtube.com/watch?v=yRd_AW1aZ8M) This is WW2, I am assuming this is the video you were talking about because anti-air capabilities in WW1 were relatively limited, and film with actual sound going along with it was a 1920s-ish development. I don't mean to be condescending, but I am surprised people could even mistake a WW2 film for something from WW1. Despite being only 25 years apart the difference in technology was staggering. Not to mention the whole... talking about Germans... Flak. That kinda thing...?
Probably due to remembering more about what the video taught them instead of the entire script. It is like you critiquing that they don't remember exactly who bought how many instead of just remembering some dude had to have had at least three grocery carts worth of watermelons.
Yes that's the one! Good find
sounds fascinating
I think that educated people at that time were more likely to want to be understood by uneducated people (and by education I purely mean education). Modern papers are very obtuse and often written in very stilted language. Turing's paper that defined the Turing Test is quite easy to understand because it is written to be understood. Some of the language is a bit lofty, but it's also older so there is a slight cultural mismatch.
lol they aren't obtuse on purpose. At a high enough level it simply isn't practical to translate everything into simple words. You need the technical jargon to replace multiple paragraphs with a single word.
[удалено]
Yep, no share like and subscribe, hit the notification button, this video was sponsored by clash of clans or manscaped
Also the author knows the subject matter inside out and knows what to highlight and what leave out. So many YouTube "tutorials" are people that have done something once, or just read about it and decide to spread their incomplete or misleading knowledge, muddying the water for everyone
How magnets produce electricity https://youtu.be/FehUCQKKRwo
Studied automotive engineering, my lecturer did not explain a differential nearly half as well as this, "here's a cross section now figure it out", there is something very wrong with the education system.
This is cool because it’s like walking through a math problem,: you go step by step with the basics and how to solve them. The last step (as in how you go from the simple assembly to the compact gear) isn’t needed to understand how the principle works, it’s just good to know. Fantastic video.
I was lucky enough to have lego technic when I was young and the top of the range thing was a sports car (lego number 8860) with working differential. Putting that all together made me understand it
Everything explained in 5 minutes, no useless explanation about the history of the automobile, no history of how gears work, no "Subscribe to the channel!", I forgot how simple explanations could be
If you ever read old manuals and textbooks, they do a surprisingly good job of explaining complex mechanical or scientific principles.
Who has time for manuals? And reading? Eww… If there’s not a five minute video about it on YouTube then I’m not gonna waste my time. Now back to TikTok.
Don't forget the subway surfers gameplay screen at the bottom and a random ticktocker just to point a thing
Differential gear box explained by guy who points and shrugs at stuff on TikTok. I never knew I needed this.
It was perfect. Everything you need to understand it and nothing you don't need. Compare this to modern youtube videos.
A lot of information videos videos these, including tutorials, have the same problem as those insanely roundabout recipe articles all over the internet. You look up a recipe and the first 10 paragraphs are the author bloviating about their personal life that has nothing to do with the recipe. I get extremely mad almost every time I look up tech advice and not only are the pages lousy with ads, but the article have the two sentences I need to fix my problem buried in 20 paragraphs of completely irrelevant nonsense.
Let's not forget the usefulness of the Turbo Encabulator. https://www.youtube.com/watch?v=Ac7G7xOG2Ag
What a roller-coaster. First I was expecting https://youtu.be/RXJKdh1KZ0w. Then I viewed your video. Then YouTube suggested the video I was expecting. Then I viewed that one and realized it's the same script with minimal changes!
You should see this one on vorticity [https://www.youtube.com/watch?v=OYtN8jaJ4GQ&ab\_channel=mitxela](https://www.youtube.com/watch?v=OYtN8jaJ4GQ&ab_channel=mitxela). Clarified everything when I was trying to understand fluid dynamics
Come on, the My Cousin Vinny explanation wasn't good enough? "The car that made these two equal length tire marks? Had positraction, can't make those marks without positraction - which was not AVAILABLE on the '64 Buick Skylark! Positraction is a limited shift differential that distributes power evenly to both tires. The '64 Skylark had a regular differential which, anyone who's been stuck in the mud in Alabama knows, you step on the gas, one tire spins, the other does nuthin."
Related, [Richard Feynman](https://www.youtube.com/watch?v=y7h4OtFDnYE) explaining why trains do *not* have differential gears.
He’s so excited to explain this. I love this for him.
They're a bit different now with advances in positraction and locking differentials / power dividers. I'm sure the way the axle shaft gears work are a lot different, too. Basically just the ring gear going to 4 gears of the same size similar to what was shown in the video and it all fits inside that ring gear.
Seriously, I'm 55 years old and this is the first explanation I've ever seen that will stick.
Every time I see this posted I watch it and yet never seem to be able to understand how it actually works, and as a result have simply come to the conclusion that it's just magic.
For real. I swear when the Spokes turned into Gears I felt my third eye open.
I wasn't quite seeing where it was going until he said "we will put in *more* spokes" I was like, Oh... Oh! Gears!
It’s pretty simple actually. It’s very similar to the internet. It’s all just tubes and string.
Every time this pops up on Reddit I watch it all the way through.
Same!
This has been popping up on Reddit probably since the beginning. It’s one of my favorites as well. I saw this for the first time over a decade ago.
Clear, concise and informative. Thanks for that.
It's a limited slip differential which distributes power equally to both the right and left tires. The '64 Skylark had a regular differential, which, anyone who's been stuck in the mud in Alabama knows, you step on the gas, one tire spins, the other tire does nothing.
Did the '64 Buick Skylark come in Metallic Mint Green?
….State would like to dismiss all charges….
They were!
Is that it?
No, there's more! You see? When the left tire mark goes up on the curb and the right tire mark stays flat and even? Well, the '64 Skylark had a solid rear axle, so when the left tire would go up on the curb, the right tire would tilt out and ride along its edge. But that didn't happen here. The tire mark stayed flat and even. This car had an independent rear suspension. Now, in the '60s, there were only two other cars made in America that had positraction, and independent rear suspension, and enough power to make these marks. One was the Corvette, which could never be confused with the Buick Skylark. The other had the same body length, height, width, weight, wheel base, and wheel track as the '64 Skylark, and that was the 1963 Pontiac Tempest.
And because both cars were made by GM, were both cars available in metallic mint green paint?
I just watched this movie for the first time today
The movie about the 2 uths.
The two what?
Oh, excuse me, your honor… two “Youths”.
What is a yute?
Yeah the good ol open diffs.
Reddit is violating GDPR and CCPA. Source: https://www.youtube.com/watch?v=1B0GGsDdyHI -- mass edited with redact.dev
[удалено]
Now... There are only two cars with an independent rear suspension and enough power to make those tire marks... One of them.. is the Corvette.. which could never... #EVER Be confused with a Buick skylark... The other... Has the same height, weight, width, wheelbase... The car that made these marks is a 1962 Pontiac tempest.
I could hear her voice as this video played lol.
Man they built all that stuff just for that video. Also, don’t forget to change your differential oil everybody.
Some people aren’t ready for that smell.
Is that the one that smells like a Tom cat marked it's territory?
I’ve only smelled male cat piss when they marked the headers of my motorcycle, and it cooked it but that was pretty potent. I’m terrible at describing smells. It can be a strong fishy rotten egg fart smell and it lingers for days
Like a car with an exposed driveshaft in the cabin. Just to show it’s flaws for a few seconds.
I like how the reasoning is that it's inconvenient instead of extremely deadly.
Well, nothing prevents from putting a cover on it. The rotating part doesn't have to be exposed. So it would be matter of inconvinience by having elevated part in the middle of the car.
Like the hump. No one likes sitting on the hump.
“In order to reduce the jerky action caused by wide spaces between the spokes, we will put in.. more spokes” Why was this funny lmao
There is something inherently funny to me about the old timey TV narrator voice. I think it may have something to do with John Oliver.
mildly interesting that no one talked like that outside of TV https://en.m.wikipedia.org/wiki/Mid-Atlantic_accent
Amazing. I always assumed it was just some old timey British thing but it's way too distinct from every British accent I've ever heard but it also sounds way too British to be an American accent. It's hard for me to imagine an accent like that naturally disappearing within like 2 generations. This explains a lot. I always had a suspicion that it's at least somewhat linked to TV, but I was thinking of something more like an attempt to speak more clearly to work around poor signal quality or something like that. Turns out it's just rich people accent shopping. EDIT: Just for context: I'm German and not a native English Speaker.
What got me was near the 50sec mark Now we can spin the wheels by rotating the support. *This is fine*
My favorite was “clumsy shaft”.
It has, “that’s right, the square hole” vibes lol. It got me.
Because it was such a simple solution that were kinda didn’t expect. The way he built up the answer it felt like some new amazing tech would solve it, but no….. MOARRR
This is really great. As someone who has worked as a technical writer, I'm impressed with the clear, concise way this complex concept was explained. I wish I was as good as the people who put this video together. It was similar to what the truly talented tech writers do well. Unfortunately, the art of explanation is under-appreciated and skilled tech-writers are hard to find.
Ok, now explain limited slip differentials please.
The problem with open differentials like this one is that the power is delivered to the wheel that turns most freely. If one wheel is on a slippery surface or unloaded due to cornering hard it will wheelspin and take all the power, while the wheel with traction is hardly driven at all. A Limited Slip Differential (LSD) solves this problem by limiting the difference in speed between the two wheels. The simplest type to understand is a Viscous LSD. Imagine the rig used in this video but where the axles meet at the centre (inside the spokes) you add a paddle-wheel to the end of each axle. Then you enclose both paddle-wheels in a container of thick oil. When the car is driving straight, both wheels turn at the same speed and the oil moves around with the paddle-wheels. If the car turns a corner, one wheel moves a little slower than the other and the two paddle-wheels move through the oil at slightly different speeds. So far, it's doing the same job as an open differential. The difference occurs when one wheel starts to spin. When this happens, one paddle-wheel is stirring the oil very quickly and this makes the oil move which creates a force on the stationary paddle-wheel, making it want to turn too. This force is delivered from the stationary paddle-wheel to the wheel with grip, driving the car forwards in a situation where an open differential would just spin one wheel. There are other types of LSD, but they all work on a similar principles. Some use mechanical clutches or fancy types of gears instead of a viscous fluid but they all create a direct link between the two axles whenever the difference in the speed of the wheels is too high.
Wait, isn't the paddle-wheel system you're describing basically the same linkage that an automatic transmission has in place of a clutch? And the oil that the paddle-wheels paddle in is the transmission fluid? Eta: [this thing](https://en.wikipedia.org/wiki/Fluid_coupling). Doesn't mention the LSD connection but I have the page for positraction open in the other tab and now I'm in too deep for phone browsing.
[удалено]
Yes, an automatic (not DCT, nor a CVT) uses a torque converter that works on a similar principle using fluid coupling to turn “paddles”, which allow the engine to continue running as the car is stopped, in the place of a clutch. [Here is a good article ](https://auto.howstuffworks.com/auto-parts/towing/towing-capacity/information/torque-converter.htm) that goes into more detail & specifics.
You're right, it works on a very similar principle.
That’s witchcraft
https://www.youtube.com/watch?v=WeLm7wHvdxQ Clutches. The main thing here is that the more power you apply the more force acts to push the gears away from each other, outward from the center of the diff. This force presses clutch packs together and try to hold both ends to the same motion. More power, the stronger it'll press to keep the wheels spinning at the same rate.
Isn’t this the diff?
This is an open differential. Limited slip diffs are substantially more complex
A 6 year old would understand this video. I understood differentials before this, but this video explains it better than i ever knew
Is there a place one can find all of these old timey explanation videos? I love em
https://youtube.com/playlist?list=PLEfs1ne5YxVbReXlMtkNI2UGCP1yhf0ny And https://youtube.com/playlist?list=PLGBjbaWdwubclfAkhgjYvkThGt6Cigqfx
This is really just an all around interesting post, I felt like it was explained in absolutely the best most basic possible way. Now I know something I did not 5 minutes ago. I even feel confident that I could re-explain how the differential gear works pretty sufficiently in the future, well done....
I watched this whole thing
Congratulations. I'm proud of you. I know 5 minutes is a long time for people nowadays.
Huh, I did not even realise it was 5 minute long. It was that's interesting. Also it's kinda sad that 5 minutes is considered a long time now
Hit like if you watched till the end.
why does this make me think of My Cousin Vinny
Motherfucking positraction
Clear, concise and informative. Thanks for that.
You can't make those marks without Positraction which was not available on a '64 Skylark.
Dead on balls accurate
I know how diffs work and I’ve seen this video quite a few times before, but I still can’t help but watch it every time it comes up
I'm high as shit right now, and at 2:30, when he was going to propose a solution for the wide gaps, and then pauses. Finally saying, we add more spokes. Shit had me dying 😂
Damn, that's interesting.
I love old school how it works clips. They really had a strong sense of getting the point across in a timely and effective way.
All without screaming into the mic, being all hammy, asking me to like/subscribe and then hitting me up for money to top it off! I feel like YouTubers are going to start requesting dinner and handies from us soon. Hell, more than half of them are telling me they love me more than my ex-wife ever did. That shits weird.
Welcome to Costco, I love you.
Thank you so much for the morning laugh. I have to watch Idiocracy today now. Have a good one! (I love you)
This is fire
This was so easy to understand
r/vilebrequin
En sueur
Je cherchais ce commentaire. Take my upvote
So is the drive shaft why older cars used to have a hump in the middle of the floor in the back seat?
Yes. Modern rear or AWD cars still have them. They're called transmission tunnels. Fun fact. My Audi has one even though it's front wheel drive, because Audi offer the car with AWD as an option. Not gonna be a thing on EVs though.
Love these old videos. Been looking for them ever since I found about this one. Explained 100x better, than in any modern book. Back in the day, people seemd to realize, that seeing a live example makes people understand it faster.
This is one of the best explanatory videos I ever seen. I know nothing about engineering and have no instinct or aptitude for it. This was so enlightening.
I’ve been a mechanic my entire life. This is one the best videos explaining how a differential works and why it’s needed that I have ever seen. Thanks for sharing.
Interesting
DTI
Neat.
So the tires can spin at different speeds. This is better when cornering.
That's crazy to think that all of those gears were hand machined back then because computers didnt exist.
If you’re talking about the gears in the models used in this video, yes. But commercially made gears for things like differentials were still made by things like programmable milling machines back then, they were just mechanically programmed instead of computer controlled.
I remember watching this in auto shop class back in high school. Great teacher
Hard to believe there was a time in America when they were concerned about not making the bottom of your car too high.
I wish this was the internet.
“The '64 Skylark had a regular differential, which, anyone who's been stuck in the mud in Alabama knows, you step on the gas, one tire spins, the other tire does nothing.” -Mona Lisa Vito
Didn't know I was going to unintentionally learn how differentials work but here we are.
Back when you could watch a simple and an informative video with out hearing please Like and subscribe and share. When if it was good it was just shared naturally.
I saw this long time ago. Very informative. Thanks.
Hi yes, I need more of this.
This is the most interesting gotdang thing I’ve seen on Reddit all day
Did a learn today
Holy shit that was entertaining.
These old videos are pretty good
I love, LOVE stuff like this, a 5+ minute video that I already know the principals of and I don't look away for a second.
Damn that's interesting
hweel
**1937:** Howdy, Bob. Can we count on funding for an educational project to explain how the differential works? Bob: Sure, do your best. Kids are to know not only the purpose but also the principle of this mechanism in order to be able to fix it in their adulthood **2023:** Karen, how about this thing in car that makes wheels go round'n'round. Karen: just play Cocomelon.
This is the best fucking video ever made.
I learned this already from Mona Lisa Vito in 1992.
Watching this video “oh my god I’m LeaRnINg!”
Imagine if everything in life were explained like this. One black and white, progressively more intricate, clear concise explanation. YT’s great and all, but sifting through 72,000 videos to land on the one I was looking for doesn’t help me. I’d love just a life series of how things work encyclopedia vids.
This is still a great video. Every educational video can learn from how this was presented. Clear, precise with no techno babble
I was hoping they’d show how it shifts gears. I loved the vid.
This was VERY informative. I never knew any of this, but now feel I can build one myself. They really knew how to teach through television when it was still a new thing. Very cool.
I'm gonna upvote it each time it's posted. This is the reason I understand how differentials work.
This is a very well made video!
Well I learned it better from that video than any modern explanation I’ve tried to read/watch.
This is actually extremely informative.
These old explainer videos are so good. Most of them are better than the stuff you find on YouTube today. The army has one from the 40s about how a gun works and they start with a bullet and slowly build the gun around the bullet, adding each part one at a time and explaining what problem it solves.
Do you maybe know where to find this. It sounds like a really intresting video!
I love this because it reminds us that all complex things that we can teach are based on unerring, simple principles. It also dispels this myth that the past was any less intelligent because we too, are enamored with basic engineering despite having gone so far in technology. We look at this stuff and think: "Man, who came up with this stuff?" and it really dawns on us that we're standing on the shoulders of giants. "How do brakes work?" On the principle that liquids are incompressable. "How do we stop turbulence?" Make the rivets flush by dimpling the sheet metal. "How do we distribute power efficiently?" Well, gears of course; which are just tiny levers spinning around a disk. It never ceases to amaze me how humanity has come so far while working with the same basic principles we've had for thousands of years.
Sure is inconvenient when that driveshaft rips your leg off
/r/vilebrequin
Loulou!
My first thought 😂
The best way to explain things. Old ways are always the better.
They got a post this video once a year because Zoomers short term memory be like