Can a Lego Car Roll Downhill Forever?

Making Lego cars roll downward on a Lego treadmill with an incline, using various methods to create tire friction, in order to make the cars roll downhill indefinitely. The angle of the slope is gradually increased to intensify this challenge.
The final challenge is the automation of the treadmill to have an official Lego Technic car, without any modifications, roll on it indefinitely. Two Lego color distance sensors and the Powered Up app are used to create a program that constantly adjusts the tread speed and incline angle.
The treadmill internals consist of 2 powered up hubs and 4 Buwizz motors. The treads are 3D printed custom made parts.
Chapters:
00:00 5° ramp
00:41 10°
01:08 20°
02:09 30°
02:44 40°
03:08 45°
04:19 50°
05:26 75°
06:18 90°
07:28 Automation
3D Printer used to make the treadmill bars: store.creality.com/products/e...
3D Printing Modeling Software: link.shapr3d.com/cad-5589a6
BuWizz 2.0 and 3.0 Bluetooth controlled rechargeable battery box: buwizz.com/shop/1-buwizz-2?re...
buwizz.com/shop/buwizz-3-0-pr...
BuWizz Motor: buwizz.com/shop/buwizz-motor?...
Lego Technic car: amzn.to/3XzXkeR
Please note: I get a commission if you buy via Amazon or BuWizz link above. Thanks for your support.
Where I get my Lego parts from: www.bricklink.com/v2/main.page
BrickController2 (App to use PS4 Controller with Lego): bit.ly/3JypnV0
Music:
The Awakening - Patrick Patrikios
Myuu - Final Boss
Twelve Speed - Slynk
​#bricktechnology
#legotechnic​
#lego
#asmr
#engineering
#experiment

[@BrickTechnology]

Can you see the hidden minifigure?

[@_Zenith.mp4]

No

[@masenw.3179]

Yes at 7:15 on the right side of the track, its a monochrome Black minifig!

[@ChesterManfred]

​@@masenw.3179Congrats

[@joshuanunes7230]

cool 3D printed belt pieces

[@conlangknow8787]

No

[@ZimoNitrome]

For every angle you think "this man can't possibly go any steeper" then he hits you with the 90 degrees

[@irisheartt]

At that point I'm like bruh that's not even a hill anymore it's a wall

[@disassembly4147]

that's what I'm sayin😭

[@kukokeko]

he didnt listen to spongebobs grandpa

[@sergioabrb]

I was hoping he would go past 90 degrees and have the car upside down

[@RadioMan2023]

​@@sergioabrb Lol

[@Fodder916]

This could honestly be an awesome over engineered show stand for technic cars

[@nimoy007]

I was thinking that Lego could use it in advertising!

[@foopymaster1757]

Wouldn’t work for every car, because the mechanism is car dependent, not ramp dependent. It would need to be adjusted for every car that you choose to display.

[@woody442]

​@@foopymaster1757You could fix that, by sensoring the cars position and switching the ramps motor accordingly. With the robotics stuff it should actually still be possible to make such thing entirely out of Lego.

[@shmeeve]

Some of the cars with moving engines would get destroyed over time because of the friction

[@AdilAaronAkhtar]

@@shmeeve Squirt a bit of oil in and change it at regular intervals Fit an odometer to the treadmill to calculate miles covered haha

[@innocenttroll0]

One must imagine Sisyphus as a Lego car

[@professionalidiot2767]

Beat me to it 😂

[@MagikalKrabical]

One must imagine Lego car happy

[@TXA-TXAT]

This conveyor... to hold... ME?

[@MagikalKrabical]

@@TXA-TXAT a mini figure? Indeed. I have built for long enough. The kingdom of Lego has long since forgotten my illegal techniques, and I am EAGER to build them forever. However, the blood of Duplo stains your brick separator, and I am curious about your skills, Mini figure. And so, before I go and crush the creations of Legoland, you shall do as an appetiser. Come forth, mini figure, and SEPARATE..

[@NitinKumarTiwari]

😂😂😂😂😂

[@parkersummers1287]

I like how it slowly goes from a car to literally just a weird sort of drone

[@ethanpflederer3395]

I can see that the Brick Technology space program is going well

[@PhoenixClank]

Well for now it's still a Brick Technilogy road program.

[@SPPTA]

ABTA

[@satormus8263]

@@PhoenixClank build a road to space and *drive.*

[@TheTrueDarkHex]

I'd ride a lego rocket to space before anything Musk proposes

[@krashd]

@@PhoenixClank ​ These videos are funding the space program, the BTSA hopes to put the first Lego minifigure on the moon by 2028.

[@Retroactive_R]

I'd be interested in seeing if you could potentially lower the center of gravity of a lego car and see how sharp a corner it can make without flipping over, kind of like actual F1 cars.

[@Appletank8]

i always wanted to see how a car with its COG below its axles would turn

[@captainalieth]

Not quite accurate, but you have the idea! Their cornering speeds are quick because they produce downforce, which doesn't acually lower center of gravity.

[@Retroactive_R]

@@captainalieth I did not know that, I thought I heard their design put the CoG under the pavement which I thought was quite interesting but I never looked into it.

[@ralexcraft990]

@@Retroactive_Ra center of gravity outside any bounds of the vehicle? Seems impossible to me. I don’t mean having a center of mass that isn’t on a vehicle, but a center of mass that is completely outside any bound of the “box” that the vehicle fits in.

[@candyman9635]

@@ralexcraft990 sounds like black magic yeah. You could visualise downforce as 'pushing' the centre of mass under the box but in reality that's not what's happening.

[@TheRealRCSparks]

I love your engineering. I have been a huge fan of the channel for over a year :)

[@BrickTechnology]

Thank you. Your channel is great too:)

[@specialeddie8538]

​j

[@ChaossX77]

​@RepentandbelieveinJesusChrist5I was going to but now I'm not. Thanks.

[@Kobeeditzz]

6:30 HUH

[@lorenzoriquena6876]

​@@BrickTechnologywhat program did you use?

[@valthorix7347]

I don't think I've ever seen an ACTIVE downforce system before. That was very cool.

[@HourRomanticist]

F1 cars used to have fans on the bottom to suck the cars to the track, literally. It was banned because it was too effective. Events like pike peak unlimited class still have cars that use this though. Most of the good ones still use it actually.

[@Whyyyyyy]

@@HourRomanticistDid F1 ever see them used? The 2J in Group 7 Can-Am is the main example that I know of that was actually allowed to compete for even a single season.

[@David_Hogue]

The world record holder electric vehicle 0-100 km/h uses active downforce

[@spankyjeffro5320]

McMurtry Speirling uses active downforce.

[@JihanNaboulsi]

Down. realy. or. Not?

[@redevlmao]

5:48 Crazy to think that a goofy little Lego car had better controls than a million dollar submarine

[@lcajueiro]

rip lol

[@victorsamsung2921]

Go Woke go broke.

[@mirnaamorim9981]

NAHHHH WHAT (I cant believe you said THAT)

[@DiamondSan7]

BRO YOU CAN NOT LMAOOOO

[@carlostefano3961]

💀💀💀💀💀

[@jaromir_kovar]

This was amazing. I also really loved the stop motion disintegration at 6:25 It is almost organic. Beautiful!

[@nicomahler5761]

I didn’t play Lego for the last 20 years. To see how it developed and how you even have sensors and programming frameworks working with those plastic bricks makes me feel so happy. Awesome.

[@yester30]

I usually take issue with people who create their own problems in life when they did not need to.. This is a glorious exception

[@xraenon1664]

8:30 Trying to learn to parallel park be like

[@deletdis6173]

Lol

[@EthanIndo]

😂

[@BizarePlayer]

*BONK* "Whoops..." *BONK* "Whoops..."

[@MrPhatNOB]

This kind of experimental research is exactly what the human mind should be used for. I applaud your time and dedication to this. Editing is just 👌🏽

[@forlornhope1116]

I was expecting to see if you could roll downhill indefinitely in a timelapse where week 2 the plastic axle fails or something.

[@nikoladechev]

I also believe that human mind should be used to play LEGO all day! ;)

[@cjerp]

Problem is the word forever, that makes research pointless since the answer is of course no

[@GratefulforFreePress]

@@cjerp pfp checks out

[@d4ro]

Never get tired of LEGO and inventing stuff

[@TSSMASHCONTENT]

Now this is a science I know absolutely nothing about. Looks like black magic to me

[@1-7.5wyvern]

Bro turned a tiny ass car into a prototype Chinook

[@notroban]

i admire the amount of effort and time you put into these videos, keep up the good work 👏

[@BrickTechnology]

I appreciate that!

[@Spacesam7676]

Your videos never cease to amaze me. The amount of time and thinking that goes into this is wild. You got this.

[@Metalwrath2]

anything for that juicy youtube money

[@Metalwrath2]

@@repentandbelieveinJesusChrist8 jesus didn't exist

[@igofuzzjacobs973]

​@repentandbelieveinJesusChrist8 and thus the Fat Controller said unto Thomas, "You have caused confusion and delay" I put about as much stock in your words as mine.

[@Tedminat0r]

The final product that adjusted for other cars seemed really fun! I'd love to see a whole range of cars on the ramp

[@Splarkszter]

The type of system is called a PID control loop. It's quite neat, is one of the fundamental components that makes things like drones keep themselves level.

[@Jack_Wolfe]

7:50 okay thats kinda cool

[@hiiambarney4489]

I was expecting to see some lego stability endurance tests here. I saw high level engineering concepts put to work. Brilliant.

[@senseweaver01]

5:43 - Bet that hurt, ouch

[@rob_rides_his_monster1289]

As an engineer and lego fan, I love your channel. So many interesting ideas and creative builds. 👍

[@kABUSE1]

I am a lego fan fan and I also loved the video

[@TinySciFacts]

I love how he go from simple to complex, love you man keep it up

[@anzaveris]

dude the last one with the sensors was such a cool build great job!

[@sydneypalenge5982]

Wow never knew lego would be used for science but preety cool video

[@John_Wick-Babayaga]

he always makes amazing content

[@Crecross]

For years

[@alinaqirizvi1441]

Little generous to call this "science"

[@nimoy007]

​@@alinaqirizvi1441Not at all true. This is the very essence of the scientific method!

[@zejon9053]

​@@alinaqirizvi1441these designs are essentially higher engineering. science itself

[@MacElMasMancoDeTodos]

For each angle you add, you must be sure the wheels spin fast enough to counter the force in the XY axis on the angle. Basically, the more steep it gets, the faster to balance with gravity

[@tylerstutzman9722]

Excellent empirical demonstration! It would be neat if you also did a balanced free-body diagram for each configuration, to show the balanced drag force vs other forces involved.

[@rubayatraiyan9477]

Excellent empirical demonstration ☝️🤓

[@Speed001]

@@rubayatraiyan9477 ☝🤓

[@e33d90]

It’s lego

[@PKMartin]

I knew it would end with closed loop control... I'm impressed you managed to get basically everything up to 90° working in a steady state with just weight/drag/downforce tweaks though

[@OddJobEntertainment]

Wow, this is such a great demonstration of a lot of physical properties. Gravity is acting on the car which will cause it to accelerate until the forces holding it back reach an equilibrium. So if the frictional force, or drag, etc equal the gravitational force, then the car stays in place. The changing angles is also great because it shows how the y component of some of the forces can be altered. This would honestly make a great demonstration in physics classes.

[@dps_barbruh-rl4rg]

This seems like it's a good parallel to the airplane on a conveyor belt problem as well, where instead of a jet engine, it's gravity here

[@fishyfishx]

thank you. I needed this.

[@_Novation_]

I did not expect propellers to be a part of the equation

[@Ozymandinov]

This man’s engineering creativity is on another level, keep up the outstanding work!

[@BrentBestwick]

Anyone else hoping to see the downforce propellers reverse and turn the thing into a drone? Also, the durability of that treadmill!

[@louisradcliffe]

This guy has me sat in bed unshowered at 12:21 midday watching a 9 minute video about Lego cars driving on slopes. I love it.

[@user-ep7hf8yy7e]

One must imagine the lego car happy.

[@24Osx]

bro dropped the hardest edit at 8:49 and thought we wouldn't notice

[@pleasurebeachboy2661]

You pretty much made a plane's autopilot at the end with those micro adjustments to the speed and angle. This is amazing!

[@TheAdvertisement]

That 90 degree holding was inspirational.

[@LEGOCOOKING]

Give an applouse 👏for their effort for editing

[@loleq2137]

I refuse to do that

[@Dracnc]

your stop motion skills are out of this world too

[@Dracnc]

@@loleq2137why do you say that?

[@ArthurTavares-xb7yn]

$3000000 Hehehe Kwiw Skak Skak Ama Ak Ak Sk Ak Ak Aí Ak

[@hundkebab2433]

apalousey?

[@MrNeoGXPemyster]

I was genuinely speechless with the rig at the end. Like the rest of the video was great, as they always are, but i loved the final rolling road

[@flo2643]

Doesn't using a motor defeat the whole "rolling theme"?

[@jonah.pimentel5647]

If your talking about the “piston engine” then it’s not powering anything it’s being “powered” by the wheel moving increasing friction and resistance If your talking about the propeller it’s there to increase downward force keeping the car to the belt

[@emeraldcitycs6662]

@@jonah.pimentel5647and if they’re talking about the motor the guy added?

[@ninjansh9905]

Damn your engineering skills are great 👍

[@FilippSudanov]

Appreciate the level of engineering, all the approaches with air braking and propellers. How many days making of this video actually took? Did you make it in one go, or took breaks for thinking and prototyping?

[@oscarscadds36]

3:57 me on bad piggies

[@deadlyshrooms]

That last build with the Techic 'Stang would be an awesome coffee table piece. Different. Function by design. Also the tolerance between the twin rotors 🤏

[@AaronW.-cf4bc]

I keep coming back to the channel for videos and they keep getting better and better! :)

[@TaxMerry]

Great video. You've inspired me to experiment with technic more. 👍🏻

[@Quayleman]

Didn't see that coming. Awesome toy.

[@vivekskumar21]

1:27 I can't stop laughing 😂😂😂😂😂😂😂😂

[@BlahBlahSp0t]

This is so entertaining; it’s fantastic! Thank for you for all the work that went into this. We need a longer version with just the car rolling (like in the end) and some tunes 😄

[@Erikve]

Amazing video! Love how you brought the whole experiment on the end back to a practical setup with a real lego car.

[@bearwolffish]

Finally ready for that motion stop capture car scene, wallace an gromit meet the crash dummies.

[@andreigherman5980]

This video was AMAZING

[@RayRayYT1]

6:55 my GPU when I play Cyberpunk:

[@T3H_C0SM1C_SP4RT4N]

My gpu when i literally play roblox

[@GDmaster-original]

Lol

[@user-qz1tw6ih3p]

Also that's my phone GPU when I play a very heavy game

[@DrHutOfHandcraft]

Can’t imagine how much effort and work you put into your videos. Really impressive and entertaining! Thanks for sharing 🙏🏼

[@jdj90]

Now this is content! Well done sir! I'm subbed now.

[@Sparky_D]

I love that you created a PID controller at the end. Nicely done

[@littlebeef2456]

One must imagine sisyphus happy

[@josephdabunny]

8:25 the best parallel parking a bmw driver has ever done

[@EthanIndo]

😂

[@robinsheppard6400]

An easy way to get it to roll 'forever' (if friction-induced wear and failure of the treadmill and car weren't factors) would have been to use a curved treadmill. Imagine a U-shaped treadmill, so there would always be a point lower than the two ends of the treadmill. If it were sufficiently long with each end high enough, the car would be unable to roll off the end.

[@ZachAttack6089]

I was thinking the same thing. You could probably do this pretty easily by putting some slack in the treadmill. So if it starts rolling forward then its back wheels will sink down, causing it to level out and lose speed and get pulled back up. And if it starts rolling backward then the front wheels will sink in, angling it down so that it gains speed and rolls back down.

[@baylorskinner9799]

7:10 this is something straight out of bad piggies

[@2ndplaceplayer452]

4:04 :* bad piggies theme intensifies*

[@0hellow797]

Awesome vid, really surprised (and appreciate) the angle you managed ha! Do you think you could try experimenting with balancing machines? It would be crazy interesting if you manage to build one without any electrical speed control or mindstorm sensors.

[@wannabetravelers5493]

What a finale.. Bravo, little engineer hands.

[@strigibae]

reverse helicopter concept on top of car, car drives upside down. This video is truly inspiring.

[@aussiegarbo752]

Nice dude I really like your videos keep it up!

[@jasonpatterson8091]

7:05 It's beginning to believe.

[@FenrizNNN]

One must imagine sisyphus happy.

[@AllStreetsEnd]

the props are both hilarious and brilliant lol

[@pure5152]

holy shit this was one of the most insane videos i’ve watched! casually just shows how engine breaking and regenerative breaking works. as well as increasing down torque using reverse propellers, loved this!!

[@widewan7585]

6:30 *insert bad piggies theme music

[@SanHydronoid]

Not a video I thought I'd watch till the end, but one that I'm glad I did

[@legolad2103]

The journey itself towards the heights is enough to fill a man’s heart. One must imagine Sisyphus happy.

[@spelareNR14]

This is amazing! I bet this will encourage lego fans to study engineering, engineers to get into lego and young people to get into both. I was shocked by the builds and results. Keep doing what you do. Innovation leads to progress and vice versa!

[@dima.d.]

"Yes, Mr. Brick! Yes, science!"

[@Grid21]

I like the end, where the green car, is just cruising like nothing is wrong. xD Very cool!

[@superweedenjoyer]

A lot of different approaches for propulsion used in this video, so cool

[@futuresesh6873]

This was so cool

[@patricklaune5712]

This is a science experiment. Explains so much without words.

[@Blork95]

Impressive ! For the automation part, did you think about adding a controller (for example a simple PID) to easily adapt to different cars ?

[@shade5589]

I never knew how advanced thing had gotten in the world of Lego technic. As soon as he pulled out the programming software my mind was blown. Like I seen earlier Bluetooth controlled vehicles before but it never occurred to me that this level had been out there I was just unknowing.

[@RepublicanJesus]

Awesome and interesting video, your cat is adorable

[@pastaman7278]

5:37 you know if I had a nickel for every time someone controlled a handmade project that was practically useless with a gaming controller I'd have 2 nickels, which isn't a lot but its weird that it happened twice right?

[@RobCharo]

Do you think I could control a submarine with a controller?

[@Pumble27]

So cool project. I was thinking that 90° could be impossible, but you manage to solve it! You deserve 100 millions subscribers, thanks for your videos!

[@matthewgamer1294]

A million bucks to a guy who made a cool Lego build?!?!!

[@hushlore]

​​@@matthewgamer1294k*

[@Agt_Seven]

​@@matthewgamer1294 if I got the currency and exchange rates right it comes out to around $1.83 in US money

[@gamering149]

​@@matthewgamer1294it's like that meme of the kid being donated Zimbabwean dollars and being flabbergasted

[@matthewgamer1294]

@@gamering149 🤓

[@balloonpilot7632]

When a lego car has better alignment than your real car

[@ShadyOrange]

The music at the end makes you feel so good until the wheel pops off

[@eneasicael3272]

3:47 Leonardo da Vinci moment

[@bentroyano8628]

the transition from weather vane to f1 car to plane to helicopter is crazy

[@cassindra438]

this is the type of content we need

[@joshorton9061]

What you need for it to work better with any car might be to curve the belt so the car is at the bottom of a moving valley. Instead of a line at a slope

[@The_Random_dude_on_youtube]

3:04 Car. :AAAH -falls down-

[@Pixelcraftian]

We’re one step closer to real life Mario Kart 8 :) Cool video!!

[@mylittleparody2277]

That automation in the end * chief's kiss * Thank you for the video !

[@Kids_Scissors]

There's been a few school physics experiments I've had like this. You make it look easy lmao Also idk why but I love the little angle indicator at the bottom of the treadmill

[@Noticxs]

Everytime I come to this channel I know its going to be a good video

[@nootypenguino]

Very cool!! Nice video!!

[@keithwasntbarrumsing483]

One must imagine a lego car happy

[@ipodtouch]

would you consider a one hour normal speed run of a car on this machine? I think it'd be beautiful to watch

[@samschellhase8831]

Would have loved to see a contra-rotating gearbox for two propellers to both provide more downforce, but also to counteract any torque it makes

[@e33d90]

You can buy all of this online

[@fanrik9583]

The last part with automatically adjusting ramp was almost the coolest.

[@_pebbled4741]

This is insane