Making the Longest Lego Cardan Shaft

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Building and testing universal joints and cardan shafts with Lego Technic.
Chapters:
00:00 Universal Joint
01:55 Cardan Shaft Offset
03:50 Cardan Shaft No Offset
06:27 Car
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Where I get my parts: www.bricklink.com/v2/main.page
#bricktechnology
#legotechnic
#lego
#asmr
#universaljoint
#buwizz
#engineering
#cardanshaft
#experiment

Опубликовано:

20 май 2024

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Комментарии : 1,3 тыс.

@BrickTechnology 2 года назад

Check out my newest video: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-_7wwj9I_Qw8.html

@TheRaineWitch 9 месяцев назад

The fact that you go back and edit them all 😂 mad respect

@MrLevtastic 2 года назад

Using a guitar pick to illustrate the turning speed fluctuations for people on smaller screens or if the camera didn't pick it up was a *really* clever way to do it - very cool!

@doursen 2 года назад

I couls see it just fine on my phone, but the sound somewhat helps

@DasSparschwein 2 года назад

I think that something similar was also used in an old kardan shaft explanation video by ford or some other car brand in the 50s.

@joratto2833 2 года назад

@@DasSparschwein I remember the same video. It’s a timeless method.

@AdamHowellProvo 2 года назад

I wish he had contrasted that with a CV joint.

@bando404 2 года назад

Is that really a guitar pick? It’s huge…

@kasuraga 2 года назад

This is a great example of why it's important to phase your universal joints properly in all use cases.

@villageblunder4787 2 года назад

Or use CV joints!

@SolarWebsite 2 года назад

@@villageblunder4787 Yeah exactly! Because your output shaft may me nice and stable, but the intermediate axle not being at a stable speed will be noticable at higher masses/higher rpms.

@bonovoxel7527 2 года назад

Oh thank you, now I know what to search the internet for in order to understand what's the point of this video.

@UNSCPILOT 2 года назад

I didn't even know this is a problem but will deffinitly keep it in mind if I ever need them for a design

@kasuraga 2 года назад

@@villageblunder4787 Lmao of course, or use cv joints. CV joints are definitely better but in situations where only UV joints are gonna be used, definitely phase them properly or you're gonna have a bad time

@epiccollision 2 года назад

Thank you for perfectly illustrating how small losses in a mechanical chain can add up and cause failures.

@Marisad 2 года назад

8:52 We will miss him. He was a great man and a good friend. Rest in Peace

@GunGryphon 2 года назад

Watching the motor slowly die as there were more and more sections added was heartbreaking.

@jameschamberlin3926 2 года назад

Yeah

@bdscooting5312 2 года назад

Ye haha

@liamernst9626 2 года назад

And motorbreaking

@BrokenCurtain 2 года назад

This channel should be renamed to "brick torture".

@flxz77 2 года назад

It felt like everything was going to explode at any moment

@alexludwig9099 2 года назад

The issue with your "no offset" design is that there is still an offset, its just a very minor one. Because its spiraling outward, the angle of change is not exactly 90 degrees, but slightly larger. Over 60 iterations, that small angle has added up to a large offset.

@kauhanen44 2 года назад

wouldn't it still be the same angle since they are concentric (almost) regular hexagons? it's just slack in the joint that's accumulating and causing the intermittent rotation.

@KimmyR3 2 года назад

@@kauhanen44 nope, and it's not actually the offset that's causing the 'fluctuations' but the angle of the joint. the greater the angle, the greater the effect. in the real world, a CVD (constant velocity drives) solves this by a number of ways.. one of which is by introducing another universal joint in the same space. in the lego example above, it's basically 2 (or more) universal joints every time a "turn" happens..

@StefanNoack 2 года назад

No. You can see them move all in perfect sync. However friction is fluctuating and therefore the motor speed does not remain constant.

@ThePapino134 2 года назад

also all the inks seem to be in the same state. every rod should be ofset from the precedent to mitigate the torque problem on the angle offset

@allenlark 2 года назад

you could maintain theoretically perfect 45°/135° angles and still spiral out just by changing side/shaft length. so this isn't necessarily the reason

@tomkampfraath 2 года назад

5:00 The electromotor:”THAT’S ENOUGH SLICES!!”

@user-rx7og5on6y 2 года назад

For the students of vehicle engineering, the unequal velocity universal joint is really kind

@tacomas9602 2 года назад

Universal joints are something you have to watch on farm equipment a lot. Also driveshafts and such!

@JayRussellDuramax 2 года назад

I'm not sure what I enjoyed more, the demonstration, or all of the hilarious ways the motors, gears, and other bricks popped apart under the stress! Haha! Also, once you got to 18 U-Joints on the car, the drivetrain sounded like the beat to a Johnny Cash song. Hahaha!

@jlinkous05 2 года назад

Unreleased Cash track: I Walk The Line of Offset Universal Joints

@JayRussellDuramax 2 года назад

@@jlinkous05 I could see Weird Al Yankovic doing something with that... Haha!

@basilbrush9075 Год назад

Yee haw, like a gallopin stahlyun

@aaronfoster5680 Год назад

And it only took One Piece at a Time!

@kummer45 2 года назад

I can't explain how awesome this video is. It's literally an engineering class gone right. This is the best way to learn something complicated having fun with it without spending lots of money.

@anongentry2269 Год назад

Total Mech noob here, is there a real-world purpose of this level of iteration with a Cardan Shaft, or is this just a way to demonstrate the cascading increase in offset?

@zimidiaz1015 Год назад

@@anongentry2269 mech noob here too, but I dont think there is any feasable real world purpose of this level of iteration of universal joints, one or two at a time, maybe, even three, or four if you really want to stretch it, I can see, but 60? thats just ridiculous

@Kolonol1 Год назад

@@anongentry2269 you've never driven a 4 wheel drive vehicle with completely independent suspension all the way around? Maybe a Mercedes? Or a dune buggy? They all have some/ a lot of these concepts

@kayciestraub 2 года назад

7:16 *insert train horn here*

@alexlik4197 2 года назад

Wow! I had no idea that the offset thing was even a thing! I learned something new today. Thanks!

@gameknight.thump1 2 года назад

i cant even tell whats different between the offset and the not-offset XD nvm i just didnt notice it at first bc me dum btw we have the same first name :o

@minidude993 Год назад

@@gameknight.thump1 I literally took 15 min trying to figure it out. Had to take screenshot to go back and forth and everything lol all makes sense now though

@jaredchampagne2752 Год назад

@@minidude993 can you explain it to me? I still don’t get it, the design looks the same. Offset and no offset...I feel so dumb.

@nkt1 Год назад

@@jaredchampagne2752 Look at the middle shaft @1:11. With no offset, the C shapes on each end are both aligned.

@olafhoftijzer9571 7 месяцев назад

What is it used for tho?

@TERRORdrigo 2 года назад

the sudden gear grinding at 5:40 kills me. it also sounds like a gau 8

@stopmotionanimations1 2 года назад

That moment was like a jump scare for me, especially since I had my volume on almost max with headphones on.

@natan6218 2 года назад

or sudden, explosive diarrhea

@CocoNoCo Год назад

Sounds like a strong, crispy fart.

@Dinginkan Год назад

@@CocoNoCo ur dad fart

@yerpy-nya-furry Год назад

@@CocoNoCo exectly

@malinhiles 2 года назад

I seriously appreciate how you kept the raw audio. You actually see and hear everything as it happens, no janky ass music covering everything up lol. Great vid!

@RailsofForney 2 года назад

8:21 GUY: M o v e . MOTOR: But I don’t wanna! GUY: M O V E MOTOR: O-K! *MOTOR GOES SPEEEN*

@MixZTitaniumDubstep 2 года назад

5:41 that abrupt grinding noise i think is funny.

@rs37_ 2 года назад

I loved the short stop motion animation at the end, great detail.

@nonpondo_ Год назад

It scared the hell out of me

@sliceofbread2611 2 года назад

at 4:30 you made a very trippy optical illusion, it looks like the joints are moving outwards

@half_time Год назад

Wicked effect. Looks like the whole octagon is growing in size because of the spin. Love the illusions. 3:55

@helpmereach45ksubswithoutvideo 2 года назад

These videos makes our days better

@STA-3 2 года назад

No, i won't help you reach 31k subs without any videos.

@crazygt850 2 года назад

@@STA-3 savage

@arnoldrimmer9161 2 года назад

I would most certainly agree with you on that!

@mansikkamies9146 2 года назад

Bot

@Jayderzomb 2 года назад

I‘m very into mechanical engineering, and i like to think that i know much about it but this is new to me somehow i never thought about this, thanks for spreading information mate!

@EstorilEm 2 года назад

Same! Still scratching my head and simultaneously feeling kinda stupid for not realizing this.

@Metalwrath2 2 года назад

5:11 warthog fires its guns

@dorabora2936 Год назад

Honestly this is a brilliant demonstration for how universal joints work, I’m actually studying as an engineer (focused on cars, particularly in Motorsport) and we had this explained in class but even with the animations they had I struggled to intuitively understand how exactly the fluctuations work. This demonstration finally made it click, so thank you for this excellent video!

@al-asadi 2 года назад

That optical illusion @ 3:50 is amazing!

@nagualdesign 2 года назад

What optical illusion?

@Gwalchgwyn 2 года назад

Oh, wow. Did not notice until I stared at the centre of the image for a few moments. Cool.

@allergictoasphalt11 2 года назад

Oh yeah it is!

@Scribblersys 2 года назад

@@nagualdesign When the axles are spinning it looks like the whole structure is slowly expanding outwards

@nagualdesign 2 года назад

@@Scribblersys I don't see that myself but thanks for explaining.

@datawsomeduck3383 2 года назад

I like how whenever it broke it went from sounding like a engine with no fuel to a full rpm v12

@toothlessblue 2 года назад

4:15 wild optical illusion where if you stare in the centre it looks like it's getting bigger - besides him adding more connectors ;D

@BloodyMobile 2 года назад

I'm always impressed with the unexpected failure points. Also with how some of these setups sound like low rpm diesel engines.

@jibs2861 2 года назад

3:58 Now I know how to make the chromatic scale with Legos!

@builder1013 2 года назад

4:55 My computer when I put shaders on my Minecraft world

@Bear551590 2 года назад

So much respect for the time and effort that went into frame matching the transitions at the 4:40 mark.

@ArdePiertje 2 года назад

Nobody cares tho the video is still lit

@jo-gu4ln 2 года назад

@@ArdePiertje i cared

@STA-3 2 года назад

@@ArdePiertje i cared

@TrueWolves Год назад

@@ArdePiertje I cared.

@RepressedButton Год назад

I cared

@allhonesty848 2 года назад

When I went to automotive mechanic school, they used a lego model similar to this to demonstrate automotive drive shafts and problems that arise with them.

@CharliesName 2 года назад

I always think to myself when I watch these videos. "Surley this is close to the limit". Then I look at the timebar and it's always less then 50% of the video. You really push these lego experiments to the limit and it's awesome!

@florisjaaltink3455 2 года назад

This is brilliant, I've been working on a project using these joints and so far this is the best example of how they behave!

@tenorHarlequin Год назад

I love that you show the issues in your device iterations. It's really healthy for upcoming engineers and programmers.

@poobutington207 2 года назад

Litterally rhe best type of videos, jus straight content, no commentary, no music. love it man!

@randomgamer4048 Год назад

8:30 I swear this is the noise printers make

@Only_Henrik 2 года назад

Wow great ways to demonstrate the importance of no offset! also very mesmerizing!

@conkerthesquirrel4331 2 года назад

RU-vid algorithm has never done me wrong. Happy to have found your channel! These demonstrations have so many applications outside of Legos. They get my brain thinking differently about common problems I run into at work/home/other projects. Great stuff!

@nickmaclachlan5178 2 года назад

I'd have been interested to see if some lubrication would have made it any easier to run those 66 U/J's? This experiment also perfectly displays the reason why cars need to have constant velocity joints in their axles and driveshafts. Can you imagine having to drive down the road with your wheel speed fluctuating like that? Lol.

@N-Kryptic 2 года назад

Its called driving a Jeep lmao

@scopie49 2 года назад

Lubrication would definitely help. Brick Experiment Channel has occasionally added lube to some mechanical tests and it increases the RPM and helps preventing overheating/melting of the plastic parts. Some would considering adding lube cheating though since it's involves using something outside the world of Lego itself. I'd still be curious how far it could go because there is a lot of sources of friction adding up throughout this model.

@shangerdanger 2 года назад

There was a technic piece from the 90s that was a U joint inline with axle

@olafhoftijzer9571 7 месяцев назад

Shanger!

@Legominder 2 года назад

Nice! I knew of this effect but making a chain reaction of the oscillation through the axle is great!

@GilliamFlebus Год назад

It's really cool how you kept matching the motor rythme while adding more joints. Such a subtle detail that seems completely effortless but isn't.

@STMNewEngland Год назад

that was hypnotic. also this has to be the best demonstration of both mechanical loss and U-joint phasing. i would love to see one with Constant velocity joints.

@chessie2003 2 года назад

The use of a pick to demonstrate rotation speeds is inspired!

@thetubeboi6991 2 года назад

He didn’t say it wasn’t.

@jacknesbitt240 2 года назад

@@thetubeboi6991 inspired is another word for very smart/creative

@thetubeboi6991 2 года назад

@@jacknesbitt240 kk, sorry.

@danielfruhauf5304 2 года назад

Didn't expect a video so soon. Very cool!

@DuckInGameStop Год назад

5:10 "oh cool they changed the gear ratio, it'll probably run smoother now" *grinding noise directly from hell*

@kevinsmith3854 2 года назад

I appreciate all the editing with this build.

@JayAlastor Год назад

7:05 sooo my mind was working right when i was thinking "HEY isnt this used for differentials in cars??"

@eyeseaewe1736 2 года назад

Great video as usual. I never knew the phasing of universal joints could have such an effect.

@plymouthmechanic3423 2 года назад

Very pleasing to see how much torque you can achieve with Lego! Every time you thought to solve the weak spot, the following weak spot appears. Very nice video!

@nkronert 2 года назад

I love the construction "time lapse" edits. Lots of work, but great results!

@Calthecool 2 года назад

Imagine a GBC module that moves the balls to the center using a mechanism like this.

@jeradblazek677 2 года назад

Man, Lego's have definitely gone from just being a child's toy, to a tool for aspiring engineers since I was a kid!!

@sirrichardpumpaloaf8154 Год назад

It’s LEGO, no such thing as LEGO’S

@jeradblazek677 Год назад

@@sirrichardpumpaloaf8154 Lego my eggo😉

@danieldey 2 года назад

I never knew about fluctuations like this, and the guitar pick use was awesome!

@cartsoel9652 2 года назад

It’s cool how the sound changes every time he adds something. I enjoyed observing the whole process.

@davesendit1348 2 года назад

Very good video. Very interesting. I have a good idea for the next video for you. What if you made a lego lathe? Maybe it could cut styrofoam or maybe even wood. It would be really neat if it had power feed and everything

@koejoe 2 года назад

I’m always amazed by how much I learn on this channel.

@FNBonkers 2 года назад

Nice vid, it demonstrates the oscillating motion of the shaft when you have a difference in angle from one end to another, and of course the huge loads on the bearings. that's why you can't change the drive angle with a traditional cardan shaft, just a parallel offset.

@mystic7462 2 года назад

Alternate Title: Destroying More Lego Using More Lego

@aaronandannelogan Год назад

Clearest explantation I've ever seen (literally!) of why a universal joint is not a constant velocity joint. Subscribed.

@sunnivathebest846 Год назад

I like how the motor with all the universal joints sounds like laughing, and it sound more demonic when more are added

@AngelloProduct 2 года назад

A weapon to Surpass metal gear 8:44

@riclozano 2 года назад

wait... I wasnt the only one to think that this sounded like old town road right????? 6:27

@XperimentorEES Год назад

Thanks for demonstrating the inherent flaw with universal joints, though I gotta admit the sputtering was strangely funny.

@thomasgougeon9804 Год назад

That poor motor is like: I canne do it Cap'n!! I don have the power!!! This was super fascinating and the guitar picks to show the offset was a great idea!

@_g7085 2 года назад

I went back, and forth, back and forth. Many times. I never saw a visual difference between "offset" and "no offset". What did I miss????

@_g7085 2 года назад

@@tusharxo ahhhhhh, now I see it. I was looking for a piece added or removed, or perhaps a different piece. Rather than the two ends of the middle shaft being parallel, they're perpendicular now. Thanks!

@jasperfk 2 года назад

@@_g7085 That really helped, thank you!

@in1 2 года назад

As always, another great video! Did you consider a worm gear at the motor?

@BrickTechnology 2 года назад

Thank you, the gear does not matter at some point, the bottleneck are the first 1-4 joints, they give

@theyeetus1428 2 года назад

Exactly what I thought.

@DantalionNL1 2 года назад

@@BrickTechnology Could it be better if there would be lube added to the shafts? Almost looks like a friction issue.

@BigPanda096 2 года назад

No obnoxious music, just the beautiful sound if Legos and Lego motors operating and being put together. I could just listen to this to fall asleep without even watching it. Idk why. Thank you for not.bombing the videos with some obnoxious music. Idk why people think you habe to employ the use of wild sounds and lights to keep attention. If your content is worth paying attention to, then I will. If you have to use sensory overload just to maintain attention, then you aren't making good content. This, this is GREAT content that is self attention grabbing. Kudos and very well done.

@xhag1x 2 года назад

Clearly the smoothest ride ever built for comfort

@swedish_shitpost7756 2 года назад

4:20 why does it look like its getting bigger?

@xitcix8360 2 года назад

Those lego pieces went through a lot of pressure, I'm surprised none of them broke

@El-Burrito 2 года назад

I love it when the whole thing pulls itself apart. Such a cool video!

@Astro-or9ej 2 года назад

Staring at the center produces some cool illusions!

@SeLLeks 2 года назад

There is a really fascinating visual illusion effect if you watch the middle of the building and move your eyes around the joints. Looks like it all expands outwards.

@MazonDel 2 года назад

That poor LEGO man fell into the mechanisms and was lost to us. A moment of silence for their sacrifice in the name of engineering.

@kentslocum 2 года назад

I learned a lot about universal joints--thank you!

@seasong707 Год назад

This must be what engines have nightmares about. Great video!

@omnicutelcatl5281 Год назад

I see complicated looking lego contraptions, i click. its simple.

@thehannomeiring 2 года назад

I love how you show the mistakes and failures, this is super awesome, learning alot

@EFCLARK 2 года назад

Whyyyy was this interesting as hell??? And the Lego man 4th wall break look at the end was a " HA!" moment. Well done

@SimonLaudati Год назад

The initial offset explanation is exactly the reason for the cracking noises of the Technic Defender

@gulcanaslan2673 Год назад

My man both blesses us with ASMR and cool lego builds, 2 birds 1 rock!

@ihavetwofaces Год назад

6:15 - father please, I cannot! You ask too much of me!

@MrFurbulous Год назад

5:42 that went from 0-100% violently! Also I jumped me a bit and made laugh hard.

@bobkaster1 2 года назад

I am so glad I watched this. I've been seeing the same fluctuation in my 42055 Bucket Wheel, now I want to go back and look at the U-Joints in the power system and see just how I have them positioned.

@whitepage8018 2 года назад

6:53 so thats how turtles are made

@fen4554 2 года назад

5:57 I had a physical reaction to this

@awesomethang1328 Год назад

very cool optical illusion for the second type of joint when it was spinning really clean, looked like it was growing

@branak 2 года назад

Had to stop at 6:21. This is pure soul torture 😢 😭

@leximatic 2 года назад

The car is the best part. It runs so bad, just hilarious, made me laugh my ass off. Please keep it up.

@idtent2960 Год назад

8:35 started to sound like a Harley lol

@The2004NissanXTERRA Год назад

7:50 the sound of every chevy pickup truck from the early 2000's and late 90's

@drubradley8821 2 года назад

I am glad you dialed in your PHASING of the U-JOINTS... my OCD was going nuts before on the older videos...LOL... Well done. I enjoyed this video as well..