Because it's such a joy listening someone talk about something in a clear and easily understandable manner. It's almost mesmerizing. I also love to listen to someone who loves the subject he's talking about, even if said subject doesn't even interest me.
JAKETSU 99 Uh, yeah. Why would he be explaining it, and how could he be demonstrating it, if it weren't? Though I admit it does make more sense if you already know about universal joints.
It never ceases to amaze me the stuff that CZcams recommends in my feed: this video is excellent. Owning a Series3 Land Rover this is the kind of stuff I should know. Intuitition would say that the output end must travel at the speed as the input, but I see now it's the average speed that is the same (if the yokes aren't parallel). Brilliant demonstration. Reminds me of when I was little and we clipped a playing card to our bike forks with a clothes peg to make it sound like we were Evil Knievel !
It's because of these little quirks that we love Land Rover so much! What other manufacturer would send a car out of the factory with an out-of-phase prop shaft? *None!* Landies are soo special :)
That.....was awesome. I'm not a mechanical engineer, but consider myself somewhat mechanically inclined. However, this just blew my mind. Excellent presentation.
As an old suspension man I found this interesting. One must also note all parts here are brand new. I worked on worn out/rusted/damaged/dried out/etc... u-joints that caused vibration problems.
ı like how ALL of the comments are 1 or 2 days old even though the video is 10 months and 20 days old. what happened? did this video just randomly pop up on everyones recommended feed at the same time?
Video statistics show that you're indeed correct, since November 2016 this video started to get increasingly more views. And now, at the beginning of December 2016 this trend doesn't seem to change.
This video should be mandatory in high school Auto Shop classes. I've seen more than one kid come flummoxed because they added a 6 inch lift to their pickup, and couldn't figure out why their ride was shaking apart because they didn't align the transmission and rear differential angles.
xGolBLiiN I don't think putting negative camber on a car affects the driveshaft because the upper and lower control arms are what affects camber. The diff is bolted to the subframe of the car and when you lower the car, everything gets lower so there's no change in angle for the driveshaft. With lifted trucks, the body is lifted while the diff sits at the same place. This makes the transmission sit even higher than the diff which can cause problems as stated above.
Yes, but we call that Lunch. Was a time that high school actually prepared young people to deal with Real World problems, like how to fix your own car. Of course, that's been replaced by such useful new programs as Interpretive Dance and History of Pottery. But you're right, there's something terribly UN-American about some metrosexual man-boy who can't swap out a flat tire, or replace a set of shocks. Let alone the utter lack of focus most schools have on preparing the next generation of the SKILLED blue collar workforce.
What it looks like is irrelevant; what matters is how it works. It transforms differences in turning speed into audible output "on the fly", as it were.
I don't know why CZcams recommended this for me, what the video is about and how it may be useful for me, but it seems like it would be useful to someone.
You can lift the truck, but you need to rotate the rear differential to match the input yoke angle too. Which no one does as it requires measuring and welding.
"Trust me, Im a mechanical engineer" is one of the better titles ive ever seen on a youtube video dont know why it was recommended to me, but here I am
Very interesting, wonder how many lifted trucks built in the backyard have out of phase drive shafts? Come to think of it even my RC car drive shafts only fit one way!
The phasing comment at the end of the vid is generally unnecessary, because the CV joint behind each U-joint usually only fits one way. Even if they didn't it's pretty simple. The two U-joints must be set 90 degrees out of phase from each other for one to cancel out the non-linear effects of the other.
thomas barlow Most vehicle drive shafts can't be shifted out of phase. The U-joint mounts don't rotate like this demonstration rig, and their phase is factory set when they are build.
Mike Jones when changing support bearings the yokes have to be removed. they are usually splined onto the end of the shaft, with a large but holding them onto the spline. the other end is welded, so the support bearings only come off one way. if you put the yoke back on off by one tooth, an easy mistake to make, it will cause wicked vibrations in the vehicle.
+Clom McMorrow Exactly, always mark both halves of the spline before you pull it apart, (with a centre punch so it cant be washed off). +daemn42 A CV, (constant velocity) is a different type of joint all together, basically the opposite of this. This is a Hookes type universal joint. CV joints can change angles and maintain a constant velocity hence the name.
Jedidiah Martin and it's still been down voted 10%!!! Probably the title. Or the "A" idiots that other idiots are trying to insert into "STEM" to make "STEAM." We can't have anyone feeling left out in this country. Sorry for the rant, was just reading about the about the subject before catching this video.
Iceberg86300 Personally, I have found that there's no accounting for personal taste. Just because they didn't like the video doesn't mean they didn't understand the concept it explained. I came here _because of_ the title, and just happened to understand and like the vid too [=8 ...._and_ I'm also on Steam.
You referring to the death wobble? A vibration that usually starts at around 40 to 50mph and makes you want to drop to your knees and pray to the Jeep deities?
No, I've had the death wobble, and that my friend is unmistakable. I get a vibration at about 65 mph in the rear end. I have a very modest 2" lift and the transfer case is dropped 3/4" or 1" (I can't remember).
***** Watch that I build those shitty products, the Jeeps at least. And of course we drive them with the death wobble. Think of it as an amusement park ride for real men and women.
Why did CZcams recommend this video to me? I'm a non-engineer who was watching Star Wars fan films when this recommendation popped up. How on Earth did CZcams know that I would enjoy watching this video? And I did enjoy it, bizarrely, I did! :-)
i hate this whining about resolution. It makes me wanna take the kid and sit it infront of an 3/86 with a fucking 126k ISDN Modem. The information was good and clearly profitted from being not audio only.
hmm... I disagree that it profited... the video quality detracted from the data. The value of the video was entirely communicated by the audio... because of the explanation and the well done audio feedback of velocity change. The video resolution was too low to easily see the speed variation (which would have been obvious on a decent quality video). But of course youtube is a video site... it should be promoting quality video material, and this isn't quality.
It is kind of spooky that CZcams's algorithms knew that I wanted to see this. Good video with good information, and well presented. I look forward to more.
In my vehicle you can go 2" up with no effect but after that you need either caster corrected bushes or to change the diff angle with new suspension arms
neardood1 youre not supposed to exceed 3 degrees of angle difference. otherwise you have a chance of the driveshaft or yokes exploding. as well as vibration an other problems that may occur
Videos like this one are great, it is so comprehensive and clear. CG is one thing, but when it is demonstrated to you in the flesh, it has a different feel to it :)
Gawd damn it... This thing shows up on everyone's recommended videos because it has attained critical mass! There's no way to reduce the inertia of this video's driveshaft gaining momentum on CZcams. Trust Me, I am a Software Engineer.
Very interesting....I never would have thought of that. Makes me think of a number of people I've talked to over the years with unexplained vibrations.
The Beach Boys had exactly this problem in their tour bus, however after a big gig when they were exhuasted, they found the vibrations soothing and soporific. This is how they came up with the hit song, "Good Vibrations".
I'm a degreed mechanical engineer and this still messed with me. I guess I was ignorant to this phased drive lined stuff, but it makes perfect sense. pretty cool. Never stop learning cuz you don't know what you don't know.
When you thing you are going to see a meme then Learn something...
I approve of this clickbait
Roel de Meulder
Agreed
Roel de Meulder This is what all education should be like.
But I don't want to be educated.
Bobthedj FUCK!
Nothing like watching a good phased shafting.
lol I almost missed that one [=8
a yes frend the shaft
Horus Thelemite
lmao
What you want is a constant speed into the driven member...
mechanical engineer: give me your debit card.
grad student: why?
mechanical engineer: what do you care? we both know theres nothing on it
no idea wtf this was recommended to me but I watched the whole thing.
Same here. CZcams's algorithms for recommending videos are...pointless. But yes, a fine video nonetheless.
I'd buy that shit
same
the internet needs to just start clickbaiting with dank memes that take you to cool educational videos, the world will get so smart
same xD
I am also a mechanical engineer, and I knew this already.
Why I watched the whole thing anyway is beyond me.
Because it's such a joy listening someone talk about something in a clear and easily understandable manner. It's almost mesmerizing. I also love to listen to someone who loves the subject he's talking about, even if said subject doesn't even interest me.
So this video is true?
JAKETSU 99 Uh, yeah. Why would he be explaining it, and how could he be demonstrating it, if it weren't? Though I admit it does make more sense if you already know about universal joints.
Jaden Co I watched because his voice is soothing ;)
of course the video is true. why wouldn't it be? its pretty simple.
No idea why CZcams recommended this to me, but I liked it :D
same
same
yeah same here
same
Ditto
Don't know how I got here but glad I did.
It never ceases to amaze me the stuff that CZcams recommends in my feed: this video is excellent. Owning a Series3 Land Rover this is the kind of stuff I should know.
Intuitition would say that the output end must travel at the speed as the input, but I see now it's the average speed that is the same (if the yokes aren't parallel).
Brilliant demonstration. Reminds me of when I was little and we clipped a playing card to our bike forks with a clothes peg to make it sound like we were Evil Knievel !
I'm pretty sure your Land Rover, like my Rover car, has one thicker tooth on the spline, so you can't be out of phase.
fluchter1996 if you had a Defender you'd find the front prop out of phase from the factory.....
It's because of these little quirks that we love Land Rover so much! What other manufacturer would send a car out of the factory with an out-of-phase prop shaft? *None!* Landies are soo special :)
not sure why this was recommended but seems like a hoot and a half
No, it is clearly a hoot and a third.
I measured only 0.8 hoots
It pegged my hoot meter.
affirmative Mr BaCoN, only 5.03 millihoots per second
"It's a hoot" -Bill Hicks
That.....was awesome. I'm not a mechanical engineer, but consider myself somewhat mechanically inclined. However, this just blew my mind. Excellent presentation.
Cool, but how do you turn a sphere inside out?
Captain Teemo look it up
It's a joke.
but its possible with when you add one or two extra dimentions :D
four dimensions is enough
Captain Teemo no its actually plausible in the 3rd dimension digitally. (unless you are able to make a solid substance that passes through itself)
As an old suspension man I found this interesting. One must also note all parts here are brand new. I worked on worn out/rusted/damaged/dried out/etc... u-joints that caused vibration problems.
I think this was shown as a "tummy tale" on a German Teletubbies episode.
German guy here, can confirm.
Dan81369 /pol/
thanks youtube for recommending this.
I watched the whole thing too.
I thought he's gonna create a melody or something...
ı like how ALL of the comments are 1 or 2 days old even though the video is 10 months and 20 days old. what happened? did this video just randomly pop up on everyones recommended feed at the same time?
Fatih Yıldız it seems you are correct
Video statistics show that you're indeed correct, since November 2016 this video started to get increasingly more views. And now, at the beginning of December 2016 this trend doesn't seem to change.
well, ı guess it kinda deserves it
In my recommended today
9gag 4chan and imgur spread it, so CZcams recognized it as a good boy.
This video should be mandatory in high school Auto Shop classes. I've seen more than one kid come flummoxed because they added a 6 inch lift to their pickup, and couldn't figure out why their ride was shaking apart because they didn't align the transmission and rear differential angles.
I feel like this less effects kids that lift their pickups and more effects the kids that put excessive negative camber on their car.
xGolBLiiN I don't think putting negative camber on a car affects the driveshaft because the upper and lower control arms are what affects camber. The diff is bolted to the subframe of the car and when you lower the car, everything gets lower so there's no change in angle for the driveshaft. With lifted trucks, the body is lifted while the diff sits at the same place. This makes the transmission sit even higher than the diff which can cause problems as stated above.
Yes, but we call that Lunch. Was a time that high school actually prepared young people to deal with Real World problems, like how to fix your own car. Of course, that's been replaced by such useful new programs as Interpretive Dance and History of Pottery.
But you're right, there's something terribly UN-American about some metrosexual man-boy who can't swap out a flat tire, or replace a set of shocks. Let alone the utter lack of focus most schools have on preparing the next generation of the SKILLED blue collar workforce.
"rrrrrrrrt rrrrrrrrrt rrrrrrrrrt rrrrrrrrrt"
- Card
Great idea using the card as a simple speed sensor!
yet it looks like Credit card / ATM card
such a genius example
Clay Wheeler so?
What it looks like is irrelevant; what matters is how it works.
It transforms differences in turning speed into audible output "on the fly", as it were.
Looks like a Kroger Plus card* to me.
*Supermarket reward points card.
*****
Smith's does that, too.
BTW, that name "Halliburton" looks rather familiar........and somewhat notorious.....
A very good demonstration of the non-linear effect of angular offset on a Hookes joint.
I couldn't have said it better myself.
Exactly what I was thinking!
But I was wondering about the flux capacitor triangulation residual effect.......
That has to do with phasing in the driveshaft. No wonder my DeLorean wasn't doing anything at 88mph besides getting me pulled over.
I don't know why this was recommended :S But I watched it till the end with a lot of interest :o
I don't know why CZcams recommended this for me, what the video is about and how it may be useful for me, but it seems like it would be useful to someone.
How did i get here? help
George Ioannou Can't say I regret watching it lol
I'm not going to say it for you
Nail: Have you tried working the shaft?
Frieza: Classy!
Re-title video "Why not to lift your truck"
You can lift the truck, but you need to rotate the rear differential to match the input yoke angle too. Which no one does as it requires measuring and welding.
netmatrix75 people who lift trucks do measuring and welding, just never together as part of the same job.
I was expecting to see a perpetual motion machine or something similar. That title doesn't make sense.
just trust him, ok?
"Honey, where's my debit card?" *runs out of the house*
"Trust me, Im a mechanical engineer" is one of the better titles ive ever seen on a youtube video
dont know why it was recommended to me, but here I am
Never realized this nonlinearity! Awesome.
Why is this on my recommended list ?
CZcams's recommendation method is totally wacked. I suspect a bunch of people sitting in a circle diddling themselves is the primary source.
Very interesting, wonder how many lifted trucks built in the backyard have out of phase drive shafts?
Come to think of it even my RC car drive shafts only fit one way!
thomas barlow very good point!
The phasing comment at the end of the vid is generally unnecessary, because the CV joint behind each U-joint usually only fits one way. Even if they didn't it's pretty simple. The two U-joints must be set 90 degrees out of phase from each other for one to cancel out the non-linear effects of the other.
thomas barlow Most vehicle drive shafts can't be shifted out of phase. The U-joint mounts don't rotate like this demonstration rig, and their phase is factory set when they are build.
Mike Jones when changing support bearings the yokes have to be removed. they are usually splined onto the end of the shaft, with a large but holding them onto the spline. the other end is welded, so the support bearings only come off one way. if you put the yoke back on off by one tooth, an easy mistake to make, it will cause wicked vibrations in the vehicle.
+Clom McMorrow
Exactly, always mark both halves of the spline before you pull it apart, (with a centre punch so it cant be washed off).
+daemn42
A CV, (constant velocity) is a different type of joint all together, basically the opposite of this. This is a Hookes type universal joint.
CV joints can change angles and maintain a constant velocity hence the name.
I love the high definition 40x30 pixels resolution!
WHAT THE FUCK AM I WATCHING.
WHY IS THIS SUGGESTED TO ME
[*]
Phew, i thought its gonna be another one of those "real perpetual motion" videos...
Unquestionable empirical proof that even a child can understand.
Nicccccccccccccce.
Jedidiah Martin right?!
Jedidiah Martin and it's still been down voted 10%!!!
Probably the title. Or the "A" idiots that other idiots are trying to insert into "STEM" to make "STEAM." We can't have anyone feeling left out in this country. Sorry for the rant, was just reading about the about the subject before catching this video.
Iceberg86300
Personally, I have found that there's no accounting for personal taste. Just because they didn't like the video doesn't mean they didn't understand the concept it explained. I came here _because of_ the title, and just happened to understand and like the vid too [=8
...._and_ I'm also on Steam.
you know what this makes me wana watch after? A-10 brrrt compilation .-.
As a kid I bet you put cards in your spokes
you lost a bet :)
story of my life. Nice video and demo machine.
Voxel Lab no I just put an actual small motor on it
Hah, me to! A brigs from a lawnmower. burn myself many times.
Lol I remember doing that:p tricked my friend into thinking I had a small motorcycle as a kid.
Very informative. Had no idea.
this is the number two reason I come to you tube !
Epic Rap Battles is the first reason?
Mika Korhonen those skank women in Walmart is number one !! very entertaining
Stan Stuben You have good taste.
Mika Korhonen, that'll be third. Honest trailer guy's epic voice is my first
Well done agent, your agility skills are progressing faster than we could have imagined.
Awesome! I've been fighting a rear driveline vibration in my Jeep Wrangler forever. I bet this it the root cause. Thanks!
You referring to the death wobble? A vibration that usually starts at around 40 to 50mph and makes you want to drop to your knees and pray to the Jeep deities?
No, I've had the death wobble, and that my friend is unmistakable. I get a vibration at about 65 mph in the rear end. I have a very modest 2" lift and the transfer case is dropped 3/4" or 1" (I can't remember).
+Mojoman57 Your driveshasft might be installed backwards.
***** Watch that I build those shitty products, the Jeeps at least.
And of course we drive them with the death wobble. Think of it as an amusement park ride for real men and women.
+diGritz1 Do you install the drive shafts in correctly and ensure that they are balanced? Gotta be something you guys are fucking up at the factory.
Well I had no idea I found phasing in driveshafts so interesting. One step closer to time travel.
I don't know why youtube recommended that I watch this, but I found it interesting nonetheless.
I am an engineering student, and I did not fully understand phase shift until I saw this...
Thanks so much!!! it really helped!!
Why did CZcams recommend this video to me? I'm a non-engineer who was watching Star Wars fan films when this recommendation popped up. How on Earth did CZcams know that I would enjoy watching this video? And I did enjoy it, bizarrely, I did! :-)
Good data... but a 240p video published in 2016? Might as well make it audio only.
Maybe its an old video uploaded recently
RzrSixFour I get a better picture on my calculator
Exactly what details are you looking for? There's a shaft, sprockets, and a motor. It's instructional, not a cinematic adventure.
i hate this whining about resolution. It makes me wanna take the kid and sit it infront of an 3/86 with a fucking 126k ISDN Modem.
The information was good and clearly profitted from being not audio only.
hmm... I disagree that it profited... the video quality detracted from the data. The value of the video was entirely communicated by the audio... because of the explanation and the well done audio feedback of velocity change. The video resolution was too low to easily see the speed variation (which would have been obvious on a decent quality video). But of course youtube is a video site... it should be promoting quality video material, and this isn't quality.
Brilliant, so glad this was in my recommended feed.
Actually quite informative! Always wondered why my technic lego creations wouldn't get driven properly... now I know why.
It is kind of spooky that CZcams's algorithms knew that I wanted to see this. Good video with good information, and well presented. I look forward to more.
i did not know this, cool
Serious! Never thought about that myself! One more sub on my account:)
that was surprisingly interesting
This is exactly what I am here for at 4 in the night.
Have no idea why this popped up on my suggested videos list.
But I learned something new today. Thanks.
It is impossible to predict whats gonna get viral nowadays
excellent demonstration. Thank you.
Thank you, I have a physics test tomorow and this is as helpfull as bringing a calculator to an english test.
Just want to acknowledge that this narration is incredible.
Very informative and well done. But how the hell did I get here? Where am I?
And this is why the CV joint was invented?
This is what we want. A constant speed into the driven member.
This is why its important to make sure the diff angle and transmission angle are the same in a lifted 4X4
Todd Sadler if you lift it "a little" you will get "a little" ill effect.
In my vehicle you can go 2" up with no effect but after that you need either caster corrected bushes or to change the diff angle with new suspension arms
neardood1 That's a robust vehicle. Anyways an no expert at this.
neardood1 youre not supposed to exceed 3 degrees of angle difference. otherwise you have a chance of the driveshaft or yokes exploding. as well as vibration an other problems that may occur
Engineer Shafts with his pole (Gone Sexual)
this is amazing, i'm an engineer too. thanks for the video, i learnt something that i don't know before.
youtube recommended this to me for about 2 weeks. so here I am commenting after watching it.
Learned more in this 2 minute video, than I did an entire semester at college.
Well alright then
O comments , only 4 likes, 4 years ago? Damnnnn
Why did I get this in my recommendation?
Earl gets all the accolades for this demonstration. But I just got a chewed up credit card. Thanks Earl.
CZcams, I expect to see memes made of this. Do not disappoint me.
Why am I watching this?!
Im asking myself the same thing.
interesting. randomly in my feed, but interesting.
Videos like this one are great, it is so comprehensive and clear. CG is one thing, but when it is demonstrated to you in the flesh, it has a different feel to it :)
Gawd damn it... This thing shows up on everyone's recommended videos because it has attained critical mass! There's no way to reduce the inertia of this video's driveshaft gaining momentum on CZcams.
Trust Me, I am a Software Engineer.
that is awesome! Amazing way to demonstrate cause and effect!
Wow I never thought about this but it's impressive
"Trust Me, I am a Mechanical Engineer"
Famous last words.
Lovin these new algorithms that are totally not about undermining professional youtubers at all.
That guy's credit card is effed now
Yes please! More of these!
Very nice practical demonstration. Got to go check my drive shaft angle now! Might solve a vibration problem that I've been having.
Makes so much more sense with sound :)
Also got this on my recommended list for no reason.
If this video taught me anything it's keep the U-joints on your CV axle in phase.
CV's are different to unijoints
the whole point of CV joints is that what is shown in the video does not happen. CV = Constant Velocity
Doc Daneeka
Aren't CV's just two u-joints at 90º phase to each other?
LCARS43278
There are a lot of different designs, there are ones that don't use universal joints at all
Thanks....now I can't sleep
Hey babe, where's the credit card?
No idea honey **tests rotating speed of shaft**
I think CZcams's algorithm had a stroke with this one.
Aww, man...I was just going to say all that stuff!
but how many explosions occur when the shaft is perpendicular to input?
Just one big one.
02:02 '..this is what we want, a constant speed into the driven member'
GIGGIDY GIGGIDY
I knew about angled ujoints giving uneven rythem, but I had no idea it could be canceled by an equal opposite angle. Amazing!!
Gonna ruin that ATM card
thank you for such a helpful tip
I learned more from this video than I did from years of FIRST robotics competitions
Very interesting....I never would have thought of that. Makes me think of a number of people I've talked to over the years with unexplained vibrations.
The Beach Boys had exactly this problem in their tour bus, however after a big gig when they were exhuasted, they found the vibrations soothing and soporific. This is how they came up with the hit song, "Good Vibrations".
fluchter1996 makes sense to me
He's gonna ruin that credit card!
thought that too.
his interest rates were high, and he maxed it out on the driveshaft thingy.
Remind me of cyfly, but instead of make actual ellipse, you just tilt the gear, awesome!
I'm a degreed mechanical engineer and this still messed with me. I guess I was ignorant to this phased drive lined stuff, but it makes perfect sense. pretty cool. Never stop learning cuz you don't know what you don't know.
Second time this has randomly been recommended to me... Yet I'm still enjoying it second time round
Yo, this fucked me up
I was waiting to see how that thing explodes, but never hapend :c
great demo of a simple but often overlooked principal
well my mind's just been blown. I never knew this and i have no idea how it's taken me so long to find this out. Wow