Understanding Universal Joint
Вставка
- Опубліковано 7 лип 2015
- Help us to make future videos for you. Make LE's efforts sustainable. Please support us at Patreon.com !
/ learnengineering
The working of Universal (Hooke's) joints has been a mystery to most of the people even though it was invented many centuries ago. This video clearly unveils the physics behind it in a simple and illustrative way with help of animation.
Like us on FB : / learnengineering
Voice-over artist :www.fiverr.com/mikepaine
Your support is invaluable for us, let's make a closed community www.patreon.com/LearnEngineering
Hey, your videos have helped me a lot,seeing that you are an Indian , I felt proud,so I decided to make a contribution ,but as patreon will charge my card in foreign currency, that will just be a waste of money,instead if you could just let me know your UPI id, I will contribute directly as much as possible every month!
email id: jangaleabhi@gmail.com
Thank You So much keep making great content!
Can do you make your rear wheel drive vehicle move if one of the rear wheel is net having firm contract with ground?
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!
now,,, why the output speed iznt constant?
VontekSRB because the propeller shaft is inclined to transmission shaft, so due to that there will be not the exact transfer of rotating speed or motion. And thus in final drive also the angle will be different hence no constant velocity.
I had trouble as well seeing why but imagine If you push something straight along a line determining it's speed or pushing it at an angle compared to the line. Even if you push it just as hard, you will cover less distance in the initial line's direction and thus your speed will be less in that that direction. Now imagine you zigzag push the object compared to the line. Your relative speed will vary, depend on the angle compared to the line you're pushing along. Regardless of giving a linear, unchanging push on the object. This is the same principle as the constant torque, constant velocity input of the input shaft giving a fluctuating velocity output when the output shaft is at an angle. Resulting in jerky rotation.
so true. im wondering now how a front engined rear wheel driven vehicle can operate so smoothly and the final part of the drivetrain is not jerky.
DangerDaveFreestyle I'm wondering if the rear drive shaft having two U joints gives it the same effect. The front U joint that is up by the yoke to the transmission and the rear u joint going to the rear differential. Does that make a driveshaft a CV (constant velocity) axle without the name?
Universal joint: I'm complicated
Automatic transmission: Hold my planetary gearset
*proceeds to break down at 10 000 km*
I have an automatic bike. Been 6 years and zero problem other than the odometer, speedometer, and the old battery lol.
@D ʝả ħ AT's are for people who have better things to do with their lives than wasting time shifting gears
@@Vi-pv3xi automatic bikes use cvt and not planetary gears
you sound like a lazy american
this video turned a simple concept into a total mind fuck........thanks :D
always trust americans to do that lol
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.
In other words, along the same axis of rotation
In other words, along the same axis of rotation
Upping my Lego mindstorms game
Wait hello what
oh
Ikr
"Now you understand how an universal joint works. Thank you."
No. Thank YOU!! :oD
+masterimbecile Exactly what I'm thinking after every single LE video. "...Thank you."
NO! THANK YOU!!!
:D
gabrocki Same here.
masterimbecile
Me neither
There are literally three parts...feels sad to be silly huh?
This has absolutely NOTHING to do with my education but I still watched the whole thing xP
+XelPixels Your education has NOTHING to do with your life, the universe and everything, so good that you watched till the end.
+Aditya Mehendale no offense, but that comment was just stupid.
+XelPixels No offence taken; I was just feeling stupid at the moment. Or maybe wise.. or just "wiseass". Who knows.. IMO, though, cool video/concept is cool - you don't need ratification from your 'education' to enjoy it.
+XelPixels Actually, there really was nothing stupid about that comment. No offense.
There's no need to stay stuck to a matter,you would be surprised at how much you can learn and be good at
Now I understand how offroad vehicles can flex so much, thank you!
But do you underatand how body builders flex so much?
@@sam_s_ MMMMMMM NO
@@sam_s_ congratulations for roasting a 5 year old comment, plenty of them left
@@csibesz07 I wasn't roasting their comment. Their comment was perfectly fine. It just made me think of a stupid joke. Relax or I'll have to flex on you.
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
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.
Exactly. I'm facing vibration problem in my car due to universal joint
"Cardan joint", not cardigan.
"it is clear"
This is simply brilliant. Really explains the non-constant velocity perfectly.
Another superb explanation...You made Understanding Mechanical really easier.
Thank you, I had no idea about the fluctuation in speed etc, especially the last minute was very helpful!
3:21 you may have outsmarted me but I outsmarted your outsmarted
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
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 :)
Thanks for the interactive animation and explanation !
INCREDIBLY interesting and informative!
Thanks so much for posting! This is a concept that I think very few professing professionals even have a clue!
Wow. Never thought that mathematical abstractions could solve mechanical challenges with such ease. Thanks for sharing.
Wonderful animation! Made the concept clear as day!
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.
This is great, thank you for teaching me for free, you deserve more subscribers
There were ads. Not free.
@@vv8104 i think he was referring purely to lack of currency transactions, which is the common way the word "free" is used. In that case it is free, but I understand your point.
You've just make my understanding of the world more complicated.
keep it amazing man, your voice makes me know I'm about to get better
It seems like everybody is here because they were curious. Not because they actually needed to know. And I think that is great.
The algorithm
I loved these videos. Thank you for this video uploader! 🤗
Awesome work.
Please continue the job.
Now I have understood U-joint in a better way. Thank you for making such a video.
Dunno why this was in my feed, but, I'm impressed by it.
Your explanation were so clear. Awesome dude!!!
Awesome 👍👍 its so easy to understand. I'm glad i opened youtube to find out. And I'm logging without any other video 😁
I needed this video in my life.
"Understanding Universal Joint": 82.230 views
"Jen Selter makes squats": 129.655.342 views
Natural selection at its finest...
i would put my universal joint in Jen Selters spline.
yo culpo a los padres
I will watch the Jen Selter squats right after this video
butts are more universal than universal joints
Thank you very much.
Effort much appreciated.
Great video!!! Congratulations, It now I can understand how a universal joint works
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!
Amazing animation with lovely explanation :)
please keep thermal related videos....your animations are simply superb....
Excellent video...thanks for sharing.
Nice video, especially after smokin some good universal joints 🤙
Thank you. I am trying to build a Lego articulated suspension system with steering. You have helped me understand the universal joints.
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 😊
I clearly understand about universal joint. Thank you
Thanks that was well explained. Good work.
Don't know why I needed to know this but I now feel empowered.
Wonderful! Thank you from Texas!
Great video. Learned something today. Thanks
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
They use CV joints, quite a different animal.
This video showed up randomly in my recommendations. No regrets at all :D
Great job.
I am a Uni joint manufacturer but never knew why do people use double joints.
My teacher always told us to use two for balance. I sorta imagined it was something like this but this is a nice video!
Thanks so much for such an interesting vid!
THANK YOU VERY MUCH!
i feel much better having understood this
Very useful for my final exam, Thanks!
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 graduation stuff. Not taught at school
awesomely explained
Why am i watching this at 2 am
Either way, that was some good narration and good explanation, thank you
Thanks UA-cam for allowing me to nerd out when I least expect it.
Thanks, this is amazing....
Thanks for the video! Really helpful :)
excellent explanation...thank you very much.......
Very informative and easy understanding
I have always wondered how that works... omg thank you
excellent explanation!!!
Really awesome! Congratulation!
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.
In your channel all videos are good
Fentastic animation
Finally my curiosity has been answered, nice animation
+unknownvector1 And why do you believe the animation to be accurate? I have seen many animations where Wily Coyote somehow hangs in mid-air before starting to drop; is that factual?
My mind just got blown. I would have never imagined it wasn't 1 to 1
this is f-ing amazing. Thank you
Can do you make your rear wheel drive vehicle move if one of the rear wheel is net having firm contract with ground?
Thanks for amazing explanation
Very clear and interesting
Hello, nice animations, can you tell us witch program did you use to make it?
The animation is nice but to be able for a universal joint to create constant output you need to turn one of the joints 90 degrees relative to the other around the turning axle.
outstandable!!!!!!!!Thanks Learn Engineering
Great explanation!
It is clear that this video helped me alot
Do you use oil to facilitare forward spin and reverse spin of the joint inside the yokes?
very well explained
So that’s how they get constant velocity to the wheels, the axels 👍🏿 thank you.
I have never thought this would have been this much complex
---- From Corona Quarantine
Regarding the double universal joint, does the constant output scenario only apply when the angle between the two ends is the same?
Excellent information.
This was amazing
Thanks for your support
Awesome video
As usual, I am always humbled by the efforts of our race.
race? you mean SPECIES
No he clearly means race, and is right
@@TheGreasyfastspeed unless he is talking about race as in "white race", as if the efforts only come from white people, then, he is talking about the species
Erramir Orlans your not making sense, he says the word ‘race’, not ‘species’. That is clear.
Erramir Orlans the ‘efforts’ as you say (or inventions) came in the vast majority, from the white race. Nothing controversial about that.
Ur explanation is suprb
Could you explain wide angle shafts! As there are three universal joints on a wide angle pto shaft and they are considerably smother than a cv shaft with 2 joints, how do the output speeds equal out in this shaft?
nice.. helpful for theory of
machines
Great lesson
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.
concise and clear!
friggin awesome. i never really noticed that u joints have this kind of motion. think of the green dot moving back and forth on one edge of a triangle and the red dot moving on the hypotenuse of the same triangle (thats a fancy word for long side yall :) . since the red and green dots have to move those distances in the same amount of time... the green dot moves faster
I love that this is recommended to me
very nice animation to show the working!! it would even be better if equation for the velocity were shown or derived...
Bbbbut the second joint is still on the same angle as the first one, is there any way to make a constant speed with 2 axis on different angles?