Check out the motorcycle version: kzfaq.info/get/bejne/i9uBq8alqrfMfHU.html

I love how it doesn’t have some loud obnoxious music, but instead is literally just the sound of it being built.

This is simultaneously the coolest and most ridiculously over engineered thing I’ve ever seen anyone build out of Lego

As a tank enthusiast it was really interesting to watch you encounter and slowly develop all the crucial parts of a tank track system. Track tensioner, return/idler wheels, guide teeth. That's my favorite part of your videos: the troubleshooting.

Love literally everything about this. Favorite part is learning about the different types of suspensions and how they react. I can’t see how you can make your content any better. I love how there’s no music it’s all just the sounds of the legos themselves. I immediately love your content and can’t wait to see what else you have!!!

As a vehicle mechanic, I can safely say this is a fairly accurate representation of how these suspension types act on real vehicles. I like how the bump steer and camber / toe angle changes are exaggerated during suspension jounce and rebound. This would be a great teaching tool for apprentices in trade school

I actually find it so interesting as to how he just..... Makes these machines. Cars. Whatever you prompt him, with enough time, you'll have it tested to perfection by him.

17:16 reminds me of school busses, in the front is “op, did we hit a bump?” In the back it’s “DEAR LAWD DID WE HIT A JUMP!?!?!”

I'm amazed at how accurately you've recreated the road just outside my house

Nice contraption, you should make a car with pneumatic suspension, using those small transparent blue Lego pneumatic cylinders. If I remember correctly, they have very low friction. Also you can use them as shock absorbers, pairing them with normal Lego shocks and connecting their inlet to their outlet directly with a short tube, so they basically work as real ones. And you can make a hose-pinching system that allows you to control the airflow through the tube, as in switchless Lego pneumatic compressors.

I love that instead of simply removing links to tighten up the belt, you engineered an extremely complex and dynamic workaround. Great job, I sure wouldn't have thought of that!

Even before getting to the car, it’s already amazing watching you build the suspension test system. Good job!

Oh this was amazing to watch, the tuck suspenison hold out so good. would love to see the Citroen 2CV suspension on this test rig (with the front and rear suspension connection system)

Would love to see a comparison to a verhicle with NO suspension at all. Because this still looks quite rough to a vehicle layman such as me, but I imagine no suspension would just break the vehicle or simply not work at all. But at least then we'd have a reference , a 'base line' to compare the other suspensions to. Great work. Love this format; all of the complexity and entertainment value is in the builds itself - this doesn't require flashy editing, annoying music or narration. Very refreshing compared to most channels.

I'd love to see more types of suspension, maybe ones from f1 cars or those from trophy trucks, see how they compare to these daily driver type suspension

This is incredible. I can't imagine how long it took you to research, build, record, and edit all of this together. Amazing

It's fascinating just how close to reality you can get with some plastic bricks! And the imitation of the leaf springs was spot on, lots of jumping

I spent countless hours of Lego building with my two sons and I can’t wait to do it again with my grandkids!

Probably my favorite part of this channel is how they show the complications and issues in the process of building, then (quite literally) build a solution to the problem, instead of cutting out any imperfections entirely. Lovely how they keep the realism and show that there's always a workaround ^^

Great that you display the iterative design and build process. Super fun to watch and helps to understand how to approach engineering problems.

18:07 in trucks, the robustness of the axles often transmits shock to the nearest weak links--the ball joints and wheel bearings. Amazing that you managed to simulate that

I love that you show how you improve stuff not just the finished models. And that audio is just satisfying.

I normally can't stand ASMR-type things. but being an avid LEGO fan since childhood. the sound of the bricks and technic pieces being put together brings so much satisfaction and nostalgia.

2:20 really liked that mechanism with use of linear actuators

This is extremely cool. I think the best part is the way you've filmed this, each shot has the faint 'click' of lego joining lego, it's really something. Great job.

00:00 Suspension Test Station 05:49 Stop Button & Speed Computer 06:43 MacPherson Strut 07:21 Semi-independent Rear Suspension 08:20 Beetle Chassis 10:17 Torque Tube 11:10 Leaf Spring Suspension 12:45 Testing Suspension Systems 18:51 High Speed Test

10:07 : "Cons: wheel camber" *You have provoked a gang war*

I love how he displayed the evolution of suspension technology via test/error (most likely what previously manufacturers went through) step by step. Through. Legos. Awesome channels - keep it up!

I would love to see this setup with actual fluid filled shocks and scaled weight, like an RC trophy truck or something. It's jarring how much bounce there is in the lego "shock"

i`d be very interested in a second part, where you test other more modern forms of suspension. e.g. phneumatic or with a shock absorber etc.

This is very fun to watch, and it's a great way to show how exactly the different suspension types used work. This is something I could watch over and over again.

Awesome! Definitely explains why going over them speed bumps at higher speeds makes them seem more manageable 😃

19:36 Samir, you're wrecking the car!!

The VW beetle front suspension was so interesting, we are so used to seeing the two arms perpendicular to the wheel, these are parallel

In the first bit I absolutely loved the way your track wasn't right so you show the entire process of redesigning your build and other mistake along the way just to overcome a simple problem, very cool stuff

I just stumbled on this channel and even though I have no idea what’s going on it’s incredibly satisfying to see the process! The amount of knowledge he has is crazy

13:00 Man, I *FELT* those bumps in my _back_

I don’t know who is more impressive; the engeeniery behind all the suspension system or the threadmill by itself, both of them are awesome

This is amazing. Also nice to see how the front tires usually drive over all the stuff while it seems like the rear tires often collide with the bumps and shock the whole chassi

This was an amazing video! I love the real world lego connection! If you still have your system set up you could try to see how different wheel base length affect the suspension also! This was just so fun to watch!

Didn't come to this video expecting a lesson in common suspension types, their strengths, and weaknesses over the the past few decades, but here we are! Delightful.

I was mesmerized, the building process, the clicking of the parts and the level of techinical skill...and the high speed shredding of the chassis to top it off Great work!

I wonder how an official lego set performs on this testbench. Like the Land Rover Defender or the F150 Raptor!

now i wanna see what no suspension does, this is amazing, this is the kind of stuff i always wanted to build as a kid, like big lego mechanical stuff like you, but i never had the knowledge or bricks to do it. you sir, are amazing

2:35 "Alright guys i did some off-camera grinding" really great video tho lmao

This brings back childhood memories from 45-50 years ago. I used rubber band as springing medium and Lego Technic didn't exist yet. Great fun, great video!

Absolutely awesome! Well done. Just one thing I noticed the beetle chassis had a great amount of bump steer at the front, the outer steering tie rod ball joints needed to be lower on the spindle/hub assembly, this would have stopped the bump steer. Great video!

As a suv lover and off-road i can pass your vehicle as a ove of the best performance vehicle for bumpy roads and a time that you give for the build is extremely appreciated by me and all of us

I still have that speedometer aswell, used it for lab work at school. We used an opamp to build an analogue speed control and I used a printer driver as the motor and my old direct drive lego motor as the feedback dynamo

15:08 Volkswagen- Das Auto

With all those clicks and clacks, the sound of this video is so damn satisfying and soothing

This stuff brings me back to my childhood, when me, my father, and my two brothers had this whole little town set up. We had a house for each of our lego characters, and we kinda played it like it was a DnD game, just without the dice. We used to come up with stuff our characters had to try to get done and everything..... Now, these videos make me want to repair my raspberry pi and get one of those NXT things with all the sensors and such. Screw it, I'm almost 30 and I still play with legos and I am not ashamed lmao .... this also gives me horrible flashbacks of dealing woth conveyor belts on a packaging line... haha

I love the detail and thought you put into the suspension designs tested! I would like to see how a Double Wishbone suspension would perform in this rig.

10:52 didn't even know it from cars before, man Legos are so helpful to understand

I loved making torsion bar suspensions from Legos they always performed phenomenal.

It’s so cool how they can take apart everything they’ve just built to make it better, makes it look so easy

What an awesome machine, and a great set of tests! I'd love to see how the 2CV system does on this, the 'bumpy road' test in particular!

This really highlights the importance of preload in suspension to be more effective at smoothing bumps. The springs were too stiff for the lighter weight but appropriate for the car with weight added.

Awesome job as always. I especially love the clicking sounds that you leave on the video instead of playing music. (Super satisfying) So Good Job!

Love the vid, it's a great demo of the designs and should be in any automotive/kinematics class. A couple of notes on the suspensions: - Leaf spring is cheap and easy to beef up, hence why it's still used. The space it requires is not a concern on pickups or actual trucks - Camber will change on every suspension with load and it will also change slightly when the wheel & steering knuckle assembly moves up. Double Wishbone minimizes that change and is therefore preferred for performance cars - Another way of setting up torsion bars is seen on early 2000s Tahoes, Suburbans, Lexus LX series, and old (60s-70s) Mopars - the bars are oriented longitudinally and are attached to the lower control arm, which itself is part of a wishbone suspension. You make use of the wasted space between frame rails and you can adjust them much easier from the bottom of the car - there's a giant bolt about 1.5 cm in diameter that adjusts and holds the tension

Man wow. I´ve always been a huge fan of suspensions idk why but especially in lego form :) This build is so cool to me and the fact that its just the sound of the build and no music or anything makes it so much better :D

This was so much more interesting and entertaining than I thought it was going to be. Great work showing off some engineering with legos

Bro, I seriously love your editing style and the crisp Lego noises... 👌🏼. I'm an engineer and love watching your creative thinking and problem solving process too. Your other channel (at least I believe it's yours) brickbender is also great content. Love it man! Keep it up!

12:49 Lego equivalent of the irresponsible dad from happy wheels

Two points to consider. Try softer tires. The hard tires causes the everything below the shocks to have unsprung mass which may contribute to the wheels breaking off. Also, I really like your step by step approach. You start out each assembly simple and small, and equally important, you gradually step it up in size and complexity allowing you to see clearly what works and does not work. Then this allows you to learn all along they way.

Highly enjoyed watching this twice. This is genious. I love how you just do it. :) A true engineer and scientist at heart.

I love that even the errors are shown alongside the solutions. Engineering isn’t just about finding an answer, it’s a process.

Would love to see a pushrod and double wishbone too! Maybe a solid axle coil to compare to the solid axle leafspring

It would be so neat to see a Trabant suspension system, it uses transverse leaf springs front and rear

15:24 sTaNCe bRo!

I love that your solution to making a perfect length belt is making an entire actuation system for the wheel to attach to so you can tighten it yourself

Can you imagine how much more insane and so good of a movie it could be to watch if they made another lego move with your lego engineering building? It would be so cool

Amazing! I like how the VW Bettle is instantly recognisable from it's toe-in/toe-out suspension.

It would be cool to see what effect castor angle would have on Lego suspension, fully independent double wishbone would be interesting too.

Wow, this video is amazing! I learned so much from it. Keep up the great work!

fantastic video! The stress test and the view of the damage was just amazing.

This is one of the coolest lego builds I've ever seen! It's so amazing you thought all this out on your own!

Love it. Would be interesting seeing how they react when the wheels are powered rather than being towed. Also reminds me of the big green range rover looking thing I had back from 2005 or something. And the smaller, also green buggy. Both with double wishbone and AWD. So cool.

I love this! You may have just started an obsession for me I’m thinking about buying a bunch of parts and just building mechanical stuff I have always wanted to be a mechanical engineer so tinkering with this to keep my mind busy would be bad ass!

That high speed test is genuinely one of the funniest things I've ever seen, that had me in tears 😭

13:08 was hella trippy. I thought you were doing some crazy camera work for a second there.,

Wow! Amazing machine and amazing test chassis, the "cars" also bounce exactly as a generic car would on a speedbump Great work! And one another thing, if you're reading this... thank you a lot for the very thorough build process so dummies like me get good ideas if they want to build a moc car :)

This was really cool and satisfying to watch, if this video hadn't been displayed in my recommended videos, I'd be crying myself to sleep right now. This might be the lego video ever.

One thing you can notice between the different suspension types is how under- or over-damped they are. It seems like the damping is left up to chance, mainly based on the friction of various joints; it's the spring coefficient and sprung mass that is being adjusted in most instances. The combination of mass, spring coefficient, and damping coefficient will result in a different resonance when subjected to a perturbation. If there is too little damping, you see repeated, decaying oscillations, as in the third vehicle (rear leaf spring chassis). If there is too much damping, the suspension doesn't have enough time to compress and the vehicle moves with the bumps, as in the second vehicle (VW beetle chassis). With just the right balance, you see maybe 0.7-1.5 oscillations, such as in the first vehicle (compact cat chassis with weight added). In addition to the damping factor is also the bandwidth or cutoff frequency of the suspension. The suspension acts as a low-pass filter, allowing the vehicle to follow slow changes in height (with some delay) while absorbing and cancelling out fast changes in height. As the speed is increased, you can see how it goes from bouncing a lot and following the bumps, to oscillating over them with a amplitude hopefully less than the amplitude of the bumps themselves. Finally, you see how both amplitude and frequency contribute to the instantaneous force. As the speed is increased, eventually the peak forces are too much and break apart the chassis. Great video. I'm tempted to try to estimate the damping factors and peak forces for the various cases. :)

I can only imagine how much fun you had doing this… When the first little man fell off and you wrote RIP I burst out laughing… Later you continued to disintegration pretty cool. I'm sure you had a blast thanks for being here

And now, a lot of people are going to understand why Jeep kept the live axle setups for so long 😁 Any chance of mid sixties Chrysler A-body setup? Live axle leaf rear, unequal length control arm front with longitudinal torsion bars on the lower control arm.

The sound of Lego coming together is the best ASMR you will ever hear.

The one with Panhard Rod is also used in some off-road car in particular for crawling

The thing about track bar geometry is it only take a few degrees variation between the angle lf the track bar and the angle of the drag link. When the angles dont match, the system fights itself causing bump steer.

This is brilliant! An accelerometer on the seat and you've got yourself a proper test bench!

I really love the sound of Lego pieces being held together. ❤

I love the fact you can see mistakes are made as it's being built, then finds a workaround. I love it.

One of the most beautiful things about driving RC Buggys Offroad, was always seeing the suspension doing its thing & working hard to keep the ride smooth! nice video!

I am fascinated with every aspect of this video, from the designs and builds of each part of the suspension testing rig to the cars themselves, but I cannot ignore the immense comedic value pf watching those cars being tested on insane amounts of bumps at ridiculous speeds and I was laughing really hard at the end but like... laughing for science 😂

I shared this around to my buds this is probably the most awesome thing i seen in a while. Earned my sub the hard way bud!

fun fact: chrysler's torison bar suspension in the '70s DID have adjustable height/tension from the factory! all you needed was a wrench and a little experience of how much twist affected the height (it needs to be driven around a little to settle in)

"both sides are now synchronized" And that's a sub. See ya at 100k!

Watching how the suspension works was so satisfying! Incredible build!

I’ve wanted to build different suspension systems out of Lego for a long time, not necessarily copies of automobile systems. Just don’t have the bricks at my disposal. Looks like a lot fun

You are genuinely inspiring and i would buy every single lego kit you've made, thank you for what you do