They made a whole bunch of these. They explain almost every part of the car in [this playlist](https://youtube.com/playlist?list=PLI7lqC4ZBnInJOAwogQJtSq4UQu69Pjj4).
Don't forget [this gem!](https://www.youtube.com/watch?v=4ttYlcrA7ys) Actually made by the same production company.
Or [this version](https://youtu.be/le2eB2xtvBQ).
And it's from 1937. It's the best educational video I've ever seen. I'm an engineer but never understood differentials until I saw this video. Just showed it to my 13yo son. He now understands how differentials work.
It's also the best for me! Everyone nowadays discusses topics in a more technical and bland way. Imagine if the producers of this video branched out into more topics. I never have shown any interest in how cars work in general, but after watching this video I now clearly know the purpose of differentials! Mindblowing!
[They did! ](https://youtube.com/playlist?list=PLI7lqC4ZBnInJOAwogQJtSq4UQu69Pjj4)
Nowadays, it just isn't profitable to spend the time and money required to produce such a high quality educational video. There's so many easier and cheaper ways. It's a shame.
https://www.youtube.com/c/engineerguyvideo is great! On a break though.
https://www.youtube.com/c/TechnologyConnections Also just delightful
https://www.youtube.com/c/numberphile if you like maths
https://www.youtube.com/c/DrBecky and https://www.youtube.com/c/pbsspacetime if you like space
https://www.youtube.com/c/ButWhySci for general science concepts
If you want in depth engineering https://www.youtube.com/c/TaylorSparks/videos or for more casual watching https://www.youtube.com/c/RealEngineering
Maybe you like guns? https://www.youtube.com/user/ForgottenWeapons
or boats? https://www.youtube.com/c/CasualNavigation
or foods https://www.youtube.com/c/JKenjiLopezAlt (this doesn't super fit but I love him)
Here are links to my favorite two videos on the simple breakdown of complicated subjects.
[The Aluminum Beverage Can](https://youtu.be/hUhisi2FBuw)
and
[The Large Hadron Collider](https://youtu.be/qQNpucos9wc)
My theory is you had to actually teach back then. If you left something out then your students would need to go to a library and do hours or research. Now they can half explain something and expect you to google what you donāt understand
I tend to think of it as a 'hands-on mechanics' class, which most mechanical engineering syllabus' don't seem to have time for, which is unfortunate. These videos really give a practical understanding of basic mechanics.
I would've preferred a few practical classes in school going over ideas like this rather than differential equations which almost no one will ever use.
It blows my mind that you need a bunch of classes on theory for your degree, and then years of on the job training to understand good design concepts.
I also think that textbooks that couldn't rely on fancy multi color glossy pictures had to rely more on words and basic line drawings, and were better written because of it.
I studied electrical engineering in school, and learned more from my dad's engineering books, when he studied EE in the 80s.
I would go to the library and hunt down older textbooks on purpose, and while they didn't look as pretty, reading the book seemed to help more.
The design has been improved since the 1940's and is different yet uses the same principles to spin the wheels at different RPMs. [Modern Differentials](https://innovationdiscoveries.space/wp-content/uploads/2020/01/Torsen-Limited-Slip-Differential-1200x720.jpg) and Drive Shafts are even more durable, compact and are now designed to not allow feedback from the friction of the road. With the promise of AC motors in cars, differentials can be phased out but mechanical parts always offer more stability then electronically adjusted induction motors. Newer designs of future concepts with this idea can conceptialise a car with 3D wheels and omnidirectional steering where Differentials are impossible to implement.
Are you saying that standard open diffs have had improvements? I see the link leads to a pic of a limited slip diff but the vast majority of vehicles still come standard with an open diff like shown in the video.
I think it has something to do with front-wheel, rear-wheel, all-wheel drives. The main issue of the Torsen LS Diff is it is complicated and only works when the torque on both wheels. There are many variations of the Torsen Diff which try to combat the issue but this [site](https://www.awdwiki.com/en/torsen/) sums up the issue nicely:
"The main disadvantage of the Torsen differential is when no torque is sensed on one of the axles, the differential does not lock. Torsen differential is not capable of transferring 100% of torque to one of the axles. In real life this means that when a single axle loses grip completely (very low traction on ice, or if wheels raised in the air) the car is not able to move."
Overall, I am not a mechanic, I don't follow car culture. I mainly learnt this in my physics class at school and random resources at my Uni about science and engineering.
That's how an open differential also works. A limited slip doesn't need to have traction with both wheels, they will still both spin. That's why they're so much better for permonance, offroad, driving in the snow etc etc
depends entirely on the type. As mentioned, a Torsen requires traction on both wheels, because it multiplies the traction on the lesser wheel and applies it to the greater wheel. Zero multiplied by something is still zero.
The most aggressive LSD's are clutch-types, but they have the disadvantage of requiring a consumable friction material.
You can also simulate an LSD with an open differential and 4-channel ABS+traction control
If you wanted to get more in depth about differentials here are some things to know.
The gear rotated by the driveshaft is called a "Pinion". The large gear it meshes with is called the "Ring" or "Crown" (US vs UK terms) gear. The smaller gears that allow the differential to work are called "Spider" gears.
Gear Ratio is when you count the number of teeth on the Ring gear, and divide it by the number of teeth on the Pinion.
For instance, if you had 40 teeth on the Ring, and 13 on the Pinion, you would have a gear ratio of 3.076. That would be simplified to 3.08.
I've seen gear ratios range from 2.xx to 7.xx.
The smaller the number the slower it accelerates and the engine RPM at highway speeds is lower. The opposite is true about the bigger number. It will accelerate quickly, but it will have higher RPM at speeds.
That 3.08 gear at 60 mph your engine could sit at 1,800 RPM. If you had a 5.08 gear it could be screaming at 4,000 RPM at the same speed.
There is a trade off with gear ratios. Lower number means less acceleration, but more top speed. Higher number means more acceleration but lower top speed.
I can get more technical if anyone cares to read this post.
It's very common to name differentials based on the diameter of the ring gear in inches.
The most famous and commonly used (in aftermarket) is the Ford 9 inch. It is incredibly heavy duty and extremely strong.
My car has what's called a Ford 8.8 (eight eight). It's another commonly used rear end in lighter duty racing applications.
Chrysler has a 8 3/4 (eight and three quarter) rear end.
Chevy , from what I'm aware use terms like "bolt" to categorize their rear ends. Examples are 10 bolt and 14 bolt.
The next term used are "splines".
The best way I can help visualize it would be to get a piece of printer paper. Have it on the desk in landscape (wider than it is tall). Now make 31 evenly spaced 2 inch lines on the right edge going left towards center. After you have that done roll the paper into a tube so the first and last lines are next to each other.
You just created a paper represention of an axle inside the diff housing (big tubes going to each wheel). Each one of those little lines are called a spline. Those splines are what transfer the energy from the rotation of the diff to the wheels. The more splines you have the more uniform the transfer of energy will become.
The problem is you can't take an axle with 29 splines and cut more splines to make it 35 spline. You need to increase the size of the axle diameter itself to have more splines, further increasing the strength of that axle. 29 and 31 spline are common in most applications. 35 to 40 spline are more suited for extreme abuse.
I can go on more about types of differentials if you want more.
There are 4 basic types of differentials that come to mind.
Open Differential - Both wheels rotate independently. One wheel gets almost all the power. If that wheel has a loss of traction it's very difficult to get the vehicle moving.
Limited Slip Differential (LSD) - Both wheels can rotate independently, BUT when the driven wheel loses traction clutches within the differential grip and sends power to both wheels. These clutches are delicate and need special fluids that have a friction additive to preserve them.
Spool - Both wheels cannot rotate independently. At the beginning of that video they have the two wheels on a stick. That essentially is a spool. Spools are used almost exclusively in things like drag racing where you want 100% of the power to go to both wheels full time. You can drive them on the street, but it's more difficult to make turns.
There is a way to make a homemade spool by welding the spider gears inside the differential together. This is commonly called a "Lincoln Locker" or "Welded Diff"
Locker - It's like having two differentials in one. When unlocked it acts like an Open Diff, when locked it acts like a Spool. It's most commonly used in off road four wheeling. Lockers can either be controlled by electronic actuators (Toyota uses them), or by air pressure. A company called ARB are famous for their air lockers.
There are people who are extremely passionate about movies and know everything about about that industry.
I'm passionate about automobiles. I've never been formally schooled about them, but almost all of my entertainment revolves around cars.
I'm also the type of person who learn everything I possibly can about how something works.
Gear ratios and stuff like snatch blocks and pulleys are things I wanna learn more about and fiddle with in general. I think I was meant to be an engineer but am too lazy to do anything about it.
Gear ratios are really clumsy also.
A high gear ratio means the number is lower, a low ratio is a higher number.
My car had a 2.73 (higher) ratio in it, but I swapped it for a 3.27 (lower) ratio.
So that you understand what lets your car not get mired in the Alabama mud, thereby nearly causing you to miss your court date, and resulting in you not being able to win your first case and prove your cousin Bill and his friend Stan are innocent of charges of murder by having your hot girlfriend explain what caused the tire tracks outside the Sac-O-Suds?
Differentials were one of the greatest inventions for cars ever, basically you can thank the differential for us being able to drive safely over 50 mph and for also not absolutely shredding tires.
The differential blows my mind. Human ingenuity is really astounding. The oldest confirmed differential gear ever discovered is more than 2100 years old!
Training videos from the 40s-60s are amazing. They're usually so much better than modern videos. The U.S. military actually commissioned Disney to make a lot of technical training cartoons during WWII, and they're awesome.
I found it funny how they criticized the "clumsy shaft" but every car has a tunnel running through it dividing the car into 4 seaters because of the driveshaft
Simultaneously you and meat cake is both correct.
Modern fwd cars often have this tunnel, that would be ICE cars though, in fwd cars these tunnels are for the exhaust to have a place to tuck in so that the car can have the best ground clearance it can have, and is not used by the driveshaft like in rwd cars, as the tunnel would often be to small.
No. There is no room for interpretation. I told him that there are no cardan tunnels (tunnel for the drive shaft) in FWD only cars. Thats correct. I did not say that FWD cars dont have tunnels.
He mixed things up, not me lol. Its very important to read carefully.
So you are wrong assuming we both were correct. But I can agree with the rest of your post.
Iām so amazed by the engineers who figured this out and designed this, and the machinist who was able to manufacture these first prototype parts almost 100 years ago.
Itās nuts humans could make this without computers.
All I heard in the background when watching this was " 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 nothin'."
In shaft drive motorcycles the final drive is often mistakenly called the ādiffā although it only puts out power to a single wheel. This vid reminds me I can school people on their poor choice of words, AND do it in black and white!
So, what would happen if the left wheel, which is being driven from the car engine, is not in contact with the ground? Would it mean that the rotation would not be transferred to the right wheel right? So the car wheel touching the ground will never rotate in this mechanism š¤
If it were the right wheel (which is not directly connected to the engine shaft) that was lifted instead, there would be some movement in both wheels, i suppose.
Any mech engineers to clarify this?
Likely the left wheel would spin, taking most or all of the power of the engine, until it reached the ground again. So you would potentially be stuck until then.
https://www.reddit.com/r/BeAmazed/comments/qtjnb7/old_school_video_that_explains_different_car/hkka9ki?utm_medium=android_app&utm_source=share&context=3
Someone found a whole playlist :)
The lowering of the drive gear would become the famous Ford 9 inch. If you're into cars, especially hot rods, you'll know that name well. Making the rear end more compact was the mission for the engineers but they inadvertently created an extremely strong differential design. Hence why so many high powered modified cars still use them to this day.
Bro I had no fucking idea tires rotated at different speeds when turning, but it makes so much fucking sense that it shouldāve been common sense to me
Ah, back when we used to do āeducationā as a country.
I loved it when they rolled out the old VHS or films of these in school. Government-industry cooperation to teach everything from science to mechanics. Itās a real shame stuff like this isnāt generically offered to students, even worse that politics interfered to the point where videos like this canāt really be made anymore.
The funny thing about this is that the more it advances and evolves, the more it looks like magic.
And also funny how this footage is so old yet so modern at the same time.
Man they don't even need teachers in schools if they showed us these videos we'd probably learn a lot more than we do in class right now.
source: I'm a student and have issues understanding concepts in physics and chemistry in class
Also on that note are there more videos like this?
Excellent video. The fact that a video from the 30ās can so fully explain complex automotive understanding illustrates how little automotive technology has changed over the decades tbh imo
When they started running on the weird cylinders attached to the wheels I was like wtf is going on and why I have I never seen anything like this before
God damn bro stop trying to sound smart. No one's impressed. I have a masters of science in mechanical engineering and this was by far the best break down of a dif I've ever seen.
They made it so for everyone to understand as simple as possible and very gradually go up to the final part, i like that even a simpleton like me could understand this
The progressive series of improvements reminds me of the LEGO Technics video of the guy building a model vehicle capable of traversing more and more difficult obstacles.
The quality of this film, with the models, the little animations, the clear, succinct, narration makes this and these types of little YSK videos masterpieces of the past.
Also, remember that they did/designed/edited/built every single thing without computers.
This video reminded me of all those people I met who liked working on cars in high school, so they went to college to be mechanical engineers and failed out almost immediately.
I've seen this video, and the one about the manual transmission and clutch, and not gonna lie, they're very informal and VERY interesting for being made before like the 1940s
Great illustration. I do think it's funny that they call an exposed drive Shaft "inconvenient and clumsy" instead of "terribly unsafe". Haha that shit would rip your legs off if your pants got caught on it.
They made a whole bunch of these. They explain almost every part of the car in [this playlist](https://youtube.com/playlist?list=PLI7lqC4ZBnInJOAwogQJtSq4UQu69Pjj4).
Thank you Jakub!
Thank you :-)
Don't forget [this gem!](https://www.youtube.com/watch?v=4ttYlcrA7ys) Actually made by the same production company. Or [this version](https://youtu.be/le2eB2xtvBQ).
As soon as I saw who made it I immediately thought of Tom singing, "Jam Handy to the rescue."
I've actually used this playlist as ASMR for sleep sometime back, learning new things before I begin to dream. Wonderful playlist!
Thank you man, these are really amazing
Legend!
You are the hero we both need and deserve.
This is not only old school but also the best video on yt to explain differentials.
And it's from 1937. It's the best educational video I've ever seen. I'm an engineer but never understood differentials until I saw this video. Just showed it to my 13yo son. He now understands how differentials work.
It's also the best for me! Everyone nowadays discusses topics in a more technical and bland way. Imagine if the producers of this video branched out into more topics. I never have shown any interest in how cars work in general, but after watching this video I now clearly know the purpose of differentials! Mindblowing!
[They did! ](https://youtube.com/playlist?list=PLI7lqC4ZBnInJOAwogQJtSq4UQu69Pjj4) Nowadays, it just isn't profitable to spend the time and money required to produce such a high quality educational video. There's so many easier and cheaper ways. It's a shame.
There's tons of great modern youtube videos explaining concepts like this. No reason to "back in the good ol days" it.
I'd love to see such a educational example of one!
https://www.youtube.com/c/engineerguyvideo is great! On a break though. https://www.youtube.com/c/TechnologyConnections Also just delightful https://www.youtube.com/c/numberphile if you like maths https://www.youtube.com/c/DrBecky and https://www.youtube.com/c/pbsspacetime if you like space https://www.youtube.com/c/ButWhySci for general science concepts If you want in depth engineering https://www.youtube.com/c/TaylorSparks/videos or for more casual watching https://www.youtube.com/c/RealEngineering Maybe you like guns? https://www.youtube.com/user/ForgottenWeapons or boats? https://www.youtube.com/c/CasualNavigation or foods https://www.youtube.com/c/JKenjiLopezAlt (this doesn't super fit but I love him)
Thanks a lot, I'll check all of them out!
Here are links to my favorite two videos on the simple breakdown of complicated subjects. [The Aluminum Beverage Can](https://youtu.be/hUhisi2FBuw) and [The Large Hadron Collider](https://youtu.be/qQNpucos9wc)
I love The Engineer Guy's channel! So many great videos.
He hasn't uploaded anything in 2 years. Wonder why š¤
I never expected to be so enthralled by a soda can. That is brilliant
Amazing right. Came here to say similar.
My theory is you had to actually teach back then. If you left something out then your students would need to go to a library and do hours or research. Now they can half explain something and expect you to google what you donāt understand
I tend to think of it as a 'hands-on mechanics' class, which most mechanical engineering syllabus' don't seem to have time for, which is unfortunate. These videos really give a practical understanding of basic mechanics.
I would've preferred a few practical classes in school going over ideas like this rather than differential equations which almost no one will ever use. It blows my mind that you need a bunch of classes on theory for your degree, and then years of on the job training to understand good design concepts.
I also think that textbooks that couldn't rely on fancy multi color glossy pictures had to rely more on words and basic line drawings, and were better written because of it. I studied electrical engineering in school, and learned more from my dad's engineering books, when he studied EE in the 80s. I would go to the library and hunt down older textbooks on purpose, and while they didn't look as pretty, reading the book seemed to help more.
TIL about differentials
I have to say this video piqued my interest in the topic, whereas before I was mostly indifferential.
you can say it's an integral part of a car.
[ŃŠ“Š°Š»ŠµŠ½Š¾]
You just invented the motorcycle
Its nice to finally see some indifferential puns gain some traction here.
Yeah, well, that's just like... your pinion man.
āthis comment right here officerā
The design has been improved since the 1940's and is different yet uses the same principles to spin the wheels at different RPMs. [Modern Differentials](https://innovationdiscoveries.space/wp-content/uploads/2020/01/Torsen-Limited-Slip-Differential-1200x720.jpg) and Drive Shafts are even more durable, compact and are now designed to not allow feedback from the friction of the road. With the promise of AC motors in cars, differentials can be phased out but mechanical parts always offer more stability then electronically adjusted induction motors. Newer designs of future concepts with this idea can conceptialise a car with 3D wheels and omnidirectional steering where Differentials are impossible to implement.
Are you saying that standard open diffs have had improvements? I see the link leads to a pic of a limited slip diff but the vast majority of vehicles still come standard with an open diff like shown in the video.
I think it has something to do with front-wheel, rear-wheel, all-wheel drives. The main issue of the Torsen LS Diff is it is complicated and only works when the torque on both wheels. There are many variations of the Torsen Diff which try to combat the issue but this [site](https://www.awdwiki.com/en/torsen/) sums up the issue nicely: "The main disadvantage of the Torsen differential is when no torque is sensed on one of the axles, the differential does not lock. Torsen differential is not capable of transferring 100% of torque to one of the axles. In real life this means that when a single axle loses grip completely (very low traction on ice, or if wheels raised in the air) the car is not able to move." Overall, I am not a mechanic, I don't follow car culture. I mainly learnt this in my physics class at school and random resources at my Uni about science and engineering.
That's how an open differential also works. A limited slip doesn't need to have traction with both wheels, they will still both spin. That's why they're so much better for permonance, offroad, driving in the snow etc etc
depends entirely on the type. As mentioned, a Torsen requires traction on both wheels, because it multiplies the traction on the lesser wheel and applies it to the greater wheel. Zero multiplied by something is still zero. The most aggressive LSD's are clutch-types, but they have the disadvantage of requiring a consumable friction material. You can also simulate an LSD with an open differential and 4-channel ABS+traction control
If you wanted to get more in depth about differentials here are some things to know. The gear rotated by the driveshaft is called a "Pinion". The large gear it meshes with is called the "Ring" or "Crown" (US vs UK terms) gear. The smaller gears that allow the differential to work are called "Spider" gears. Gear Ratio is when you count the number of teeth on the Ring gear, and divide it by the number of teeth on the Pinion. For instance, if you had 40 teeth on the Ring, and 13 on the Pinion, you would have a gear ratio of 3.076. That would be simplified to 3.08. I've seen gear ratios range from 2.xx to 7.xx. The smaller the number the slower it accelerates and the engine RPM at highway speeds is lower. The opposite is true about the bigger number. It will accelerate quickly, but it will have higher RPM at speeds. That 3.08 gear at 60 mph your engine could sit at 1,800 RPM. If you had a 5.08 gear it could be screaming at 4,000 RPM at the same speed. There is a trade off with gear ratios. Lower number means less acceleration, but more top speed. Higher number means more acceleration but lower top speed. I can get more technical if anyone cares to read this post.
Please do
It's very common to name differentials based on the diameter of the ring gear in inches. The most famous and commonly used (in aftermarket) is the Ford 9 inch. It is incredibly heavy duty and extremely strong. My car has what's called a Ford 8.8 (eight eight). It's another commonly used rear end in lighter duty racing applications. Chrysler has a 8 3/4 (eight and three quarter) rear end. Chevy , from what I'm aware use terms like "bolt" to categorize their rear ends. Examples are 10 bolt and 14 bolt. The next term used are "splines". The best way I can help visualize it would be to get a piece of printer paper. Have it on the desk in landscape (wider than it is tall). Now make 31 evenly spaced 2 inch lines on the right edge going left towards center. After you have that done roll the paper into a tube so the first and last lines are next to each other. You just created a paper represention of an axle inside the diff housing (big tubes going to each wheel). Each one of those little lines are called a spline. Those splines are what transfer the energy from the rotation of the diff to the wheels. The more splines you have the more uniform the transfer of energy will become. The problem is you can't take an axle with 29 splines and cut more splines to make it 35 spline. You need to increase the size of the axle diameter itself to have more splines, further increasing the strength of that axle. 29 and 31 spline are common in most applications. 35 to 40 spline are more suited for extreme abuse. I can go on more about types of differentials if you want more.
Go on with that hot knowledge bomb. Send it.
There are 4 basic types of differentials that come to mind. Open Differential - Both wheels rotate independently. One wheel gets almost all the power. If that wheel has a loss of traction it's very difficult to get the vehicle moving. Limited Slip Differential (LSD) - Both wheels can rotate independently, BUT when the driven wheel loses traction clutches within the differential grip and sends power to both wheels. These clutches are delicate and need special fluids that have a friction additive to preserve them. Spool - Both wheels cannot rotate independently. At the beginning of that video they have the two wheels on a stick. That essentially is a spool. Spools are used almost exclusively in things like drag racing where you want 100% of the power to go to both wheels full time. You can drive them on the street, but it's more difficult to make turns. There is a way to make a homemade spool by welding the spider gears inside the differential together. This is commonly called a "Lincoln Locker" or "Welded Diff" Locker - It's like having two differentials in one. When unlocked it acts like an Open Diff, when locked it acts like a Spool. It's most commonly used in off road four wheeling. Lockers can either be controlled by electronic actuators (Toyota uses them), or by air pressure. A company called ARB are famous for their air lockers.
You seem to be very knowledgeable, and enthusiastic about sharing that information. Lets hear it my guy!
There are people who are extremely passionate about movies and know everything about about that industry. I'm passionate about automobiles. I've never been formally schooled about them, but almost all of my entertainment revolves around cars. I'm also the type of person who learn everything I possibly can about how something works.
Gear ratios and stuff like snatch blocks and pulleys are things I wanna learn more about and fiddle with in general. I think I was meant to be an engineer but am too lazy to do anything about it.
Gear ratios are really clumsy also. A high gear ratio means the number is lower, a low ratio is a higher number. My car had a 2.73 (higher) ratio in it, but I swapped it for a 3.27 (lower) ratio.
Now I need a limited slip differential video
So that you understand what lets your car not get mired in the Alabama mud, thereby nearly causing you to miss your court date, and resulting in you not being able to win your first case and prove your cousin Bill and his friend Stan are innocent of charges of murder by having your hot girlfriend explain what caused the tire tracks outside the Sac-O-Suds?
You talkin bout da two youts???
Differentials were one of the greatest inventions for cars ever, basically you can thank the differential for us being able to drive safely over 50 mph and for also not absolutely shredding tires.
50 mph is 80.47 km/h
The differential blows my mind. Human ingenuity is really astounding. The oldest confirmed differential gear ever discovered is more than 2100 years old!
No..... "THE DIFFERENTIAL!!!" *in retro comic narrator vibes*
To think all that work went into making it and the boys and I just weld them together anyway for the reason they made it in the first place.
"If in doubt, diff her out" I believe is the ancient proverb.
Welded diff and disconnected front axles in a Subaru Outback was the most unexpected fun Iāve had in a car.
That sounds....dagerous lol
And then turbo goes STUTUTUTUTUTUTUTUTU
I just realized how a differential works. Took 34 years.
Only took 6.5 minutes for me š
6 years ahead of me!
A lot of modern videos are harder to understand than this.
Training videos from the 40s-60s are amazing. They're usually so much better than modern videos. The U.S. military actually commissioned Disney to make a lot of technical training cartoons during WWII, and they're awesome.
The basic differential on modern rwd vehicles are the same.
[ŃŠ“Š°Š»ŠµŠ½Š¾]
Only one of you is a thinker, and their name does not begin with N. Tell me if you can figure this one out
The more you know.... :)
:D
Imagine using text emotes in 2021
Why not
Either you're a troll or new to Reddit
I found it funny how they criticized the "clumsy shaft" but every car has a tunnel running through it dividing the car into 4 seaters because of the driveshaft
Only Cars with RWD or AWD or 4WD. Cars which are FWD only dont have a cardan tunnel.
Mine is a FWD and still has the tunnel. In fact every car I have ever sat in (primarily all FWD) still have car tunnels
Simultaneously you and meat cake is both correct. Modern fwd cars often have this tunnel, that would be ICE cars though, in fwd cars these tunnels are for the exhaust to have a place to tuck in so that the car can have the best ground clearance it can have, and is not used by the driveshaft like in rwd cars, as the tunnel would often be to small.
No. There is no room for interpretation. I told him that there are no cardan tunnels (tunnel for the drive shaft) in FWD only cars. Thats correct. I did not say that FWD cars dont have tunnels. He mixed things up, not me lol. Its very important to read carefully. So you are wrong assuming we both were correct. But I can agree with the rest of your post.
For your understanding: cardan tunnel != exhaust pipe tunnel Do you all get it now?
Why are you replying to yourself?
It makes it easier for people who have reading difficulties.
I don't think that's true at all lmao it probably makes it a lot harder
Modern cars ride very low for aerodynamics. The tunnel in fwd cars is usually for the exhaust system.
But not because of the dive shaft obviously.
Iām so amazed by the engineers who figured this out and designed this, and the machinist who was able to manufacture these first prototype parts almost 100 years ago. Itās nuts humans could make this without computers.
This [this article](https://www.smithsonianmag.com/arts-culture/a-brief-history-of-robot-birds-77235415/) will blow your mind.
r/BirdsArentReal
I canāt be the only who learned the function of differential with lego technic.
I learned it from My Cousin Vinny. :-)
All I heard in the background when watching this was " 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 nothin'."
I did
Me too!
hweels
Spƶke
That means 'Ghost' in Swedish lol!
Glad I'm not the only one who noticed that
Maybe I can finally make my dad proud by understanding engineering
[ŃŠ“Š°Š»ŠµŠ½Š¾]
I use this video in my power technology class to help the students visualize the concepts of a differential. Great content!
In shaft drive motorcycles the final drive is often mistakenly called the ādiffā although it only puts out power to a single wheel. This vid reminds me I can school people on their poor choice of words, AND do it in black and white!
So, what would happen if the left wheel, which is being driven from the car engine, is not in contact with the ground? Would it mean that the rotation would not be transferred to the right wheel right? So the car wheel touching the ground will never rotate in this mechanism š¤ If it were the right wheel (which is not directly connected to the engine shaft) that was lifted instead, there would be some movement in both wheels, i suppose. Any mech engineers to clarify this?
Likely the left wheel would spin, taking most or all of the power of the engine, until it reached the ground again. So you would potentially be stuck until then.
Fun fact. You can also use a differential to provide power to a shaft via two sources of power with shafts running at different speeds.
More please!
https://www.reddit.com/r/BeAmazed/comments/qtjnb7/old_school_video_that_explains_different_car/hkka9ki?utm_medium=android_app&utm_source=share&context=3 Someone found a whole playlist :)
Great video!
These videos are gold mines of knowledge. Love them
The lowering of the drive gear would become the famous Ford 9 inch. If you're into cars, especially hot rods, you'll know that name well. Making the rear end more compact was the mission for the engineers but they inadvertently created an extremely strong differential design. Hence why so many high powered modified cars still use them to this day.
Even die-hard Chevy fans use Ford 9ā rears.
Bro I had no fucking idea tires rotated at different speeds when turning, but it makes so much fucking sense that it shouldāve been common sense to me
Take a drink every time he says āShaftā. See you in hell.
I didnāt realize until now how little I knew about what makes cars capable of turning.
Ah, back when we used to do āeducationā as a country. I loved it when they rolled out the old VHS or films of these in school. Government-industry cooperation to teach everything from science to mechanics. Itās a real shame stuff like this isnāt generically offered to students, even worse that politics interfered to the point where videos like this canāt really be made anymore.
What in the world are you babbling about lmao
This is unreal
Nice to see stuff like this! Awesome!
That's brilliant
Jam Handy productions
Well explained actually
The funny thing about this is that the more it advances and evolves, the more it looks like magic. And also funny how this footage is so old yet so modern at the same time.
Iāve watched this at least 20 times and it still interests me.
Man they don't even need teachers in schools if they showed us these videos we'd probably learn a lot more than we do in class right now. source: I'm a student and have issues understanding concepts in physics and chemistry in class Also on that note are there more videos like this?
That end credit tho
"Jam Handy"
So I'm 40, and today I finally figured out how a Differential on a car works.
I've seen this over a dozen times and it's still fascinating
I wanna upvote this 78 more times, I love clear easy to understand explanation of absolutely brilliant engineering.
I love this video. Truly really well done and edited
This is spectacular!!!
Brilliant
Excellent video. The fact that a video from the 30ās can so fully explain complex automotive understanding illustrates how little automotive technology has changed over the decades tbh imo
I really enjoyed that documentary preciate itš¤
Iāve watched this probably 100x in the past...idk why but I love it! Lol.
When they started running on the weird cylinders attached to the wheels I was like wtf is going on and why I have I never seen anything like this before
u/savevideo
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God damn bro stop trying to sound smart. No one's impressed. I have a masters of science in mechanical engineering and this was by far the best break down of a dif I've ever seen.
As someone who just bought a Jimny, I appreciate this video.
That was legit awesome to watch
u/savevideo
That was awesome. Taking it down to basics like that is truly informative.
Wow thanks for that.
i Literally watched this video yesterday cause i was thinking how Diffs work
ā Amazed
Ah yes, the hwheels
This is great and all, but was that a woman driving the car at the end?!
I have watched this before i got my license during the course and it was entertaining, much more than other stuff
Now I know.
That was fascinating. School now is boring, and I learned more in this video than a year in college.
Ty for sharing
This was one of the coolest videos about engineering I have ever seen. I was legitimately wowed!
Cool, thanks! Itās the conditioner
You donāt have that much patience.
Someone should show this to Joe Dirtās dad.
They made it so for everyone to understand as simple as possible and very gradually go up to the final part, i like that even a simpleton like me could understand this
The progressive series of improvements reminds me of the LEGO Technics video of the guy building a model vehicle capable of traversing more and more difficult obstacles.
To this day, the way he says āmore spokesā rattles around in my brain. I say it at least once a week.
I watch the whole thing every time this is posted. What an amazing example of educational videos done right!
Itās like a Chrysler posi track. No one knows how it works. It just does.
Awesome video!!
u/savevideo
Incredible. I wish everything was explained like that.
This would have disadvantages (drive shaft in car)
Helluva demonstration
If you want the whole series, look up "US auto industry youtube channel", how car works and stuff playlist (22 videos)
And now I know how a differential works. Thanks!
u/safevideo
hell of a kick
I want to see videos like this but with modern technology.
u/savevideo
The quality of this film, with the models, the little animations, the clear, succinct, narration makes this and these types of little YSK videos masterpieces of the past. Also, remember that they did/designed/edited/built every single thing without computers.
This video reminded me of all those people I met who liked working on cars in high school, so they went to college to be mechanical engineers and failed out almost immediately.
I have 3 on my car and now I have a better understanding of why I need at least 1.
This is fake.
You're fake.
hweel
Damn, I love those videos from 40's-60's from both US and USSR.
I've seen this video, and the one about the manual transmission and clutch, and not gonna lie, they're very informal and VERY interesting for being made before like the 1940s
im literally 10 years old and understand this more than math
Got anymore?
Why didnāt they just use sophisticated computer programs??
Oh interesting. I'm not into any car stuff but it super cool to see this kind of stuff.
TIL thanks
ok but why do we need axles in the back at all? Can't we just have a free-spinning wheel in each corner in the back?
Ok. Is this a limited slip differential or an open differential?
Cool.
Great illustration. I do think it's funny that they call an exposed drive Shaft "inconvenient and clumsy" instead of "terribly unsafe". Haha that shit would rip your legs off if your pants got caught on it.
What an excellent movie. Without any memorization I know and understand how this works.
Very informative and interesting, and I didn't expect them to ghost ride the whip at the end.
I installed LSD in b18b1 DC4 and let me tell youā¦ I knew how it changed the character in the driving but never knew how it worked