Making the Longest Lego Cardan Shaft
3,582,550
Published 2022-02-16
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
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#universaljoint
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#engineering
#cardanshaft
#experiment
All Comments (21)
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Check out my newest video: https://www.youtube.com/watch?v=_7wwj9I_Qw8
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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!
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This is a great example of why it's important to phase your universal joints properly in all use cases.
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Thank you for perfectly illustrating how small losses in a mechanical chain can add up and cause failures.
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8:52 We will miss him. He was a great man and a good friend. Rest in Peace
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Watching the motor slowly die as there were more and more sections added was heartbreaking.
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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.
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5:00 The electromotor:”THAT’S ENOUGH SLICES!!”
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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.
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Universal joints are something you have to watch on farm equipment a lot. Also driveshafts and such!
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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!
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7:16 insert train horn here
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For the students of vehicle engineering, the unequal velocity universal joint is really kind
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Wow! I had no idea that the offset thing was even a thing! I learned something new today. Thanks!
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I loved the short stop motion animation at the end, great detail.
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8:21 GUY: M o v e . MOTOR: But I don’t wanna! GUY: M O V E MOTOR: O-K! MOTOR GOES SPEEEN
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the sudden gear grinding at 5:40 kills me. it also sounds like a gau 8
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5:41 that abrupt grinding noise i think is funny.
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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!
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Wicked effect. Looks like the whole octagon is growing in size because of the spin. Love the illusions. 3:55
