Understanding Universal Joint 

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I understood the basic concept of a U-joint, but had no idea that the output speed wasn't constant. Very interesting. Thanks for the video!

One thing that should be noted in the last example (double U joint): The input and output shaft have to be parallel for the velocity to remain constant.

this video turned a simple concept into a total mind fuck........thanks :D

Upping my Lego mindstorms game

Universal joint: I'm complicated Automatic transmission: Hold my planetary gearset

"Now you understand how an universal joint works. Thank you." No. Thank YOU!! :oD

Now I understand how offroad vehicles can flex so much, thank you!

This has absolutely NOTHING to do with my education but I still watched the whole thing xP

The video is exactly what I needed. He didnt just explain the parts and purpose of the U join, like most other videos, but he also talked about the physics

Another superb explanation...You made Understanding Mechanical really easier.

You missed one very important point! The angle of the outputting universal joint must match the angle of the inputting joint. This problem was the source of some vibration concerns with some RWD vehicles and I have seen quite a few "Raise Kits" put on the rear suspensions of cars and trucks that did not take this into consideration. Some of those vehicles shook so violently they would loosen the fillings in your teeth! The concept of the constant velocity joint was used in the 60's and well into the 80's with what was called the "Cardigan Joint' and it had a very short piece of shaft at the front of a lot of driveshafts on GM RWD cars. A bit more complicated than this video showed, it served pretty well to eliminate vibrations caused by angle variations as long as the final output angle to the differential was under 1 degree.

This is simply brilliant. Really explains the non-constant velocity perfectly.

3:21 you may have outsmarted me but I outsmarted your outsmarted

Thank you, I had no idea about the fluctuation in speed etc, especially the last minute was very helpful!

You've just make my understanding of the world more complicated.

INCREDIBLY interesting and informative!

It seems like everybody is here because they were curious. Not because they actually needed to know. And I think that is great.

This video has made a huge difference to my understanding of this joint! Along with helping me complete my course work, many thanks.

Excellent video. This is why when reassembling a tail shaft, it is very important that the marks on the slip joint line up, so the angles on each end also match

This is great, thank you for teaching me for free, you deserve more subscribers

I needed this video in my life.

If you look at light-duty 4x4 trucks from decades ago (50s, 60s, and early 70s), the transfer case was tilted down toward the rear to reduce the angle of the U-joints in the rear drive shaft (the shaft with the greatest need for running efficiently), but this increased the angle of the U-joint on the front side of the transfer case. To accommodate that, they tilted the rear (input side) of the front axle downward. This rotation of the axle position away from the position that "looks right" increased the angle of the U-joint at that location so it was a close match to the steep angle of the U-joint at the front of the transfer case. It's a setup that looks very strange if you don't know the reason, and this video explains the reason.

Thanks for the interactive animation and explanation !

Such an excellent video I have ever encountered with! It is explained with simple graphs and simple explanations, as well as supported with a simple video, I really enjoyed it, and I am so grateful :)

Wonderful animation! Made the concept clear as day!

Nice video, especially after smokin some good universal joints 🤙

Thank you very much. Effort much appreciated.

what an amazing explanation. hope we can learn more things from you guys.

Awesome work. Please continue the job.

Thanks so much for posting! This is a concept that I think very few professing professionals even have a clue!

I loved these videos. Thank you for this video uploader! 🤗

Dunno why this was in my feed, but, I'm impressed by it.

keep it amazing man, your voice makes me know I'm about to get better

Wow. Never thought that mathematical abstractions could solve mechanical challenges with such ease. Thanks for sharing.

Your explanation were so clear. Awesome dude!!!

Now I have understood U-joint in a better way. Thank you for making such a video.

Great video!!! Congratulations, It now I can understand how a universal joint works

Wonderful! Thank you from Texas!

Excellent video...thanks for sharing.

Don't know why I needed to know this but I now feel empowered.

Awesome 👍👍 its so easy to understand. I'm glad i opened youtube to find out. And I'm logging without any other video 😁

Thanks, this is amazing....

Amazing animation with lovely explanation :)

outstandable!!!!!!!!Thanks Learn Engineering

awesomely explained

THANK YOU VERY MUCH! i feel much better having understood this

Thanks that was well explained. Good work.

I clearly understand about universal joint. Thank you

Thanks so much for such an interesting vid!

Great video. Learned something today. Thanks

please keep thermal related videos....your animations are simply superb....

Thanks for the video! Really helpful :)

Very useful for my final exam, Thanks!

Thanks for your support

Many years ago they taught us this at school, when disassembly the shaft always mark the parts and spline with a file so they go back exactly the same, otherwise the Jerky Motion will ruin the drive shaft. Pretty obvious. I hope kids are still taught these basics mechanics

this is f-ing amazing. Thank you

Ooooooo my gosh ....... Never knew that the speed on the output shaft isn’t constant after changing the angle 🤷🏻‍♂️ Thanks a lot dear for uploading this informative video 😊

Excellent information.

I've been searching for this for over a year and now finally I know how a fwd is able to steer while powering the wheels

excellent explanation!!!

Finally my curiosity has been answered, nice animation

I needed to figure out a way to transmit rotation to another axis without bevel gears and I had no idea how great universal joints were until this video. Thank you so much! You fucking rock!

concise and clear!

Really awesome! Congratulation!

Very informative and easy understanding

Thanks RU-vid for allowing me to nerd out when I least expect it.

It is clear that this video helped me alot

Thanks for amazing explanation

This was amazing

This video showed up randomly in my recommendations. No regrets at all :D

Very clear and interesting

In one word : Great!

I have always wondered how that works... omg thank you

Thank you. I am trying to build a Lego articulated suspension system with steering. You have helped me understand the universal joints.

excellent explanation...thank you very much.......

Great explanation!

Great job. I am a Uni joint manufacturer but never knew why do people use double joints.

I love that this is recommended to me

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My teacher always told us to use two for balance. I sorta imagined it was something like this but this is a nice video!

very well explained

Awesome video

"Understanding Universal Joint": 82.230 views "Jen Selter makes squats": 129.655.342 views

Why am i watching this at 2 am Either way, that was some good narration and good explanation, thank you

Thank you for these videos. I, along with many other instructors have been tasked with converting what are normally lab activities to online lessons in a very short period of time. I certainly appreciate your site as a resource of accurate, clearly explained information.

Great lesson

Thank you . I love mechanism

Wow!!!! Amazing

Ur explanation is suprb

Great job.

I didn't know, I didn't know how a universal joint worked. Lots of pennys dropped like why on cars its a different joint called a CV joint constant velocity. Why the yolks have to be lined up. And why the input and output shafts have to be parallel. OMG. Thank you sir and thank you youtube for the recommendation.

nice.. helpful for theory of machines

this channel rocks

So that’s how they get constant velocity to the wheels, the axels 👍🏿 thank you.

My mind just got blown. I would have never imagined it wasn't 1 to 1

what an explanation !

That was interesting, thank you

In your channel all videos are good Fentastic animation

Loved this video. thanks