@@britishneko3906 When the weight keeps increasing as some point, we will reach a limit where we can only make enough lego to replace the pieces that go bad with age, even assuming that the building process for the lift takes no time and you could swap pieces out without breaking the structure
Nice tests, didn't expect it to be able to lift so much! With the scissor/parallelogram design you'll also have to consider the starting height: the lever of the mechanism is the vertical distance between actuator/string and joint, which obviously increases the higher it gets. So, the extended form of a scissor can lift up to 5x more than the retrachted one.
Thanks for the comment! I was aware of the lever but i wanted to see how much it could lift from its fully ‘closed’ state. Balance was difficult on this one - unlike lifting a car with a scissor jack where the car has other points of contact with the ground to keep it stable, the unrestrained weights slid everywhere!
These designs are incredible! You're a real engineer. Seems to me the weak point is always going to be the gears in the end, because the plastic teeth fail very easily under heavy load.
So one of the best lift tables you can buy for machine shops and whatnot has 4 long verticle threaded shafts in the corners and what is effectively a large nut attached to the moving surface of the table. For low torque applied to the threaded shafts, you can lift massive amounts of weight on the table. You could easily replicate this with a long lego axle and worm gears lined up on it, attach some gear reduction to the bottom of each axle, then chain it all to one motor. With a proper table design, which shouldn't be that difficult, you could have lifted significantly more weight than a normal rack and pinion setup like this video used.
Arrrrghh… this is torture. Torturing the bricks and the engineer within me. Repeatedly fixing the symptoms, but never treating the underlying problems that caused them in first place. And those poor gears! They did not deserve this! 😭 Very cool video, but it kinda grinds my gears. Pun intended.
You need to do a part 2 because as someone that has done this before, you can lift much heavier than what you did AND with less parts. Utilize more gear racks and gear Turntables in your build. Multiple Turntables handles distribution load much better than single axels.
Cool experiment! The best power/holding would probably be with worm gears driving gear racks on the lifting platform, as these have more "teeth" in contact with the weight carrying portion of the device at any one time.
What's funny is that he used the scissor jack design, when that's usually paired with a bolt tightening mechanism, not dissimilar in principle to a worm gear.
It's also a question of how much lift height you want, a lever system could of course lift a huge amount without putting stress on gears and stuff but only travel a short distance in height.
good video. just had to say tho, as someone who spends a lot of time figuring out how to optimize the strength of drivetrains and suspension systems for the insane forces they can see during extreme operation, some of these connections and joints hurt my whole brain
So, theoretically, Lego (or any Technic system) could lift insane amounts of weight, if the mechanism is durable and geared down enough, in practice it'll take way more patience than anyone would ever have to build such a thing
bruh the second upgrade hit me like old minecraft survival videos: "Hey guys, so I did a little mining off camera" - proceeds to show giant diamond castle
I don't know if you will see this, or if it will be relevant or not, but a few years ago I watched a guy lift a concrete road barrier using only Lego by building one hell of a block and tackle crane set up. It needed a few metal axels and by the end most of the supports that the axels spun in were destroyed, but he did manage to lift it an inch or so off the ground.
Hey thanks for the comment! I’ve made a video on pulling a car with block and tackle - no metal axles though! That video you mention sounds interesting! What people can achieve with LEGO is amazing!
When i see little machines like this struggle to lift weight that is cake for nearly any human over the age of 7, i am immediately more impressed with our anatomy and how a similar sized body part (arm) can lift 10x the weight
almost 80 pounds!?!? Madman! This is awesome! XD fr tho just imagine you're one of the little lego dudes and you have to work on that thing if it breaks down.
You should take all of your broken gears, and melt them down into either other new Lego parts or sell them as some kind of merch (Lego-engineering themed trinkets and such)!
Unless the materials break. Newton's laws-action reaction. If the force required to lift the load (greater than the mass times gravity) is greater than the yield strength of the material (ABS in the case of LEGO) then the material (axles and/or gears) will deform rather than lift the load.
The second design has a cardinal flaw making it less effective than it is. You spun the gears the wrong way causing the strings to bend over the frame at almost 90°. Due to the tension they are under it will cause a lot of friction resulting in loss of lifting capabilty.
What's that, like 6 AA batteries and less than a kilo of Legos lifting a 9 year old? That's actually mind bending to think a kid could stand on that last one and it would support his weight at all without collapsing, much less be able proactively lift him up.
I was surprised at the lift/weight ratio too. I think there is probably room for improvement with a greater lift possible. Stay tuned for part 2 at some future point! Thanks for watching!
I'm no engineer of sort but I've seen some major flaws in the pulley system, ofc it failed splitting the gears which is what I didn't notice at first. That thing is bending, and the torque needed to start the pull is higher than from 50% on. It all spreads trough the structure, and imo it gonna crack it after splitting the gearbox at 2:00 and before consuming the wire against brick's corners. You apparently need a stronger chassis, its kinda disappointing that the main point of failure there are bricks connection and not power or simply the ABS the material itself. I enjoy all these experiments video tho! :)
It would be easier to get a better grasp on its maximum capacity if you put it on a scale, and above it you have something really heavy that it definitely cant move. Then crank it until it wont go any further and subtract the starting number on the scale, thats it's maximum capacity
Im really impressed i didn't thought lego could lift so much. Awesome engineering and design 👍 could you do a maybe a yt short where you try the last Design just doubled? So 4 motors and 4 sets of gears and a higher gear ratio. If the fragile plastic is the problem then the solution might be distribute the weight on even more gears? I got really curious and was already anticipating a bit that you would push the limits even more after i was surprised that often :D you might remember as well another youtuber (i forgot the name) who used gears and axles made of some kind of metal that would help a lot but it wont be legos but im sure it could also lift even up to 50kg with your clever engineering
@@cablecar3683 Of course, provided that you reinforced it. We're taking a theoretical situation where the axles, bricks, gears, etc, are indestructible, and the only variables are the weight and the motors.
@@Mr._Bellic Interesting theory actually. If stress wasn't a thing, technically you could lift things much heavier than a few weights, maybe even lift entire skyscrapers.
In this case he seemed to limit him self to 2 motors (not sure on the last one but it looked like it. And then there will be a limit on power transfer and losses. But yes, if you are prepared to go very slowly you would be able to increase the load quite a lot.
I feel like the tests done with the scissor jack are not completely accurate since you were putting force on it with your hand. For a clean controlled data it would have to be unchanged by external factors.
Make 10x12 13 actual l\3 sized tank that meets the accurate requirements like holding 20mm rounds, going 40mph,being small, looking right,can climb,cannot break apart without falling,has feul(water), has gun that shoots round,has turret that rotates 5°per second and has 2 layers of aourmor. Then invade the local daycare... In 35 days MAXIMUM. Or just invade your local playground
But can it lift my spirits
No.
Now THAT'S the real question😔
Unfortunately nothing can lift that
Sorry bro, no it cant
no😢
Can we get a moment of silence for all the gears sacrificed for this video?
Darn grubs
3:33 "Upgrade". Men's reaction: "Hell yeah 😎💪"
stop stealing chipmunks
@@physicsmathstutor5408 😂
Quick answer: as much as you want as long as you have proper gear ratio. And we are not even touching hydraulics yet.
Up until the plastic breaks
@@devoncampbell3607add more plastic
@@PoweredUP_At some point you will run out of lego...
@@E2.. make more
@@britishneko3906 When the weight keeps increasing as some point, we will reach a limit where we can only make enough lego to replace the pieces that go bad with age, even assuming that the building process for the lift takes no time and you could swap pieces out without breaking the structure
That moment when Lego can lift better then you can.
*than : )
First of all, through simple machines, anything is possible so jot that down
Then that's just sad every adult human should be able to easily lift 35kg
you cant lift 35kg?
35kg is 77lbs for any other American, also yeah you can’t lift 77lbs?
Always wondered what lego with solid steel parts would equate to after watching these parts break so easily
There's something similar out there called Erector sets (i know, that name is kinda 💀)
@@bobthegamingtaco6073 Did actually have one at one point. I think it was a bicycle?
Nice tests, didn't expect it to be able to lift so much!
With the scissor/parallelogram design you'll also have to consider the starting height: the lever of the mechanism is the vertical distance between actuator/string and joint, which obviously increases the higher it gets. So, the extended form of a scissor can lift up to 5x more than the retrachted one.
Thanks for the comment! I was aware of the lever but i wanted to see how much it could lift from its fully ‘closed’ state. Balance was difficult on this one - unlike lifting a car with a scissor jack where the car has other points of contact with the ground to keep it stable, the unrestrained weights slid everywhere!
@@BuilditwithBricksdo you have instructions for the last one shown in the vid?
the fact that the majority of the lego community is probably one of the smartest is kinda interesting
These designs are incredible! You're a real engineer. Seems to me the weak point is always going to be the gears in the end, because the plastic teeth fail very easily under heavy load.
Thanks for the support! Yes gearing is tricky - I’ve got more than a few damaged gears gathering in my broken parts bin!
You can add more in parallel but after that the axles become the weakest point and it will twist itself apart.
Would it be more robust with worm wheels? More friction, but at least they translate much less force the other way (if anything).
So one of the best lift tables you can buy for machine shops and whatnot has 4 long verticle threaded shafts in the corners and what is effectively a large nut attached to the moving surface of the table. For low torque applied to the threaded shafts, you can lift massive amounts of weight on the table.
You could easily replicate this with a long lego axle and worm gears lined up on it, attach some gear reduction to the bottom of each axle, then chain it all to one motor. With a proper table design, which shouldn't be that difficult, you could have lifted significantly more weight than a normal rack and pinion setup like this video used.
I love to see how the failure point changes from improvement to improvement
Professional definition of an improvement: This time it did not break in the same way.
Arrrrghh… this is torture. Torturing the bricks and the engineer within me.
Repeatedly fixing the symptoms, but never treating the underlying problems that caused them in first place.
And those poor gears! They did not deserve this! 😭
Very cool video, but it kinda grinds my gears. Pun intended.
Exactly! Such poor engineering!
Oh no. Damaged parts in a stress test. How could this happen?
For the Americans, that's 78.2 lbs. wow!
What is
For the Brits. That 2 whole buckets of tooth plaque.
@@TWITCH307 Ахахахахаха
You need to do a part 2 because as someone that has done this before, you can lift much heavier than what you did AND with less parts.
Utilize more gear racks and gear Turntables in your build. Multiple Turntables handles distribution load much better than single axels.
do it then
Cool experiment!
The best power/holding would probably be with worm gears driving gear racks on the lifting platform, as these have more "teeth" in contact with the weight carrying portion of the device at any one time.
What's funny is that he used the scissor jack design, when that's usually paired with a bolt tightening mechanism, not dissimilar in principle to a worm gear.
Worm gears would have horrendous friction and would need grease. Pulleys or planetary gearboxes are probably the way to go imho
one motor can lift a ton, if the construction is reinforced enough, the problem is... time.. you will have to wait A LOT!
Very true! Also hard to make plastic LEGO pieces take the torque required when geared in such a way!
It would be cool if you compared the mass of the lifts themselves versus how much they can lift
It's also a question of how much lift height you want, a lever system could of course lift a huge amount without putting stress on gears and stuff but only travel a short distance in height.
Give me a lever long enough and a fulcrum on which to place it, and I shall move the world.
The time and effort that goes into these Builds, and the engineering knowledge is brilliant.
I appreciate the kind comment! Thanks!
good video. just had to say tho, as someone who spends a lot of time figuring out how to optimize the strength of drivetrains and suspension systems for the insane forces they can see during extreme operation, some of these connections and joints hurt my whole brain
So, theoretically, Lego (or any Technic system) could lift insane amounts of weight, if the mechanism is durable and geared down enough, in practice it'll take way more patience than anyone would ever have to build such a thing
bruh the second upgrade hit me like old minecraft survival videos:
"Hey guys, so I did a little mining off camera" - proceeds to show giant diamond castle
I don't know if you will see this, or if it will be relevant or not, but a few years ago I watched a guy lift a concrete road barrier using only Lego by building one hell of a block and tackle crane set up. It needed a few metal axels and by the end most of the supports that the axels spun in were destroyed, but he did manage to lift it an inch or so off the ground.
Hey thanks for the comment! I’ve made a video on pulling a car with block and tackle - no metal axles though! That video you mention sounds interesting! What people can achieve with LEGO is amazing!
I'm waiting until a car jack made of Legos can lift a full-scale car without breaking
Absolutely hysterical to me to see the plastic literally bending and every time it still goes up the little caption just goes ‘pass! 😄’
3:30 Now this one's a beast!
You know to give up when LEGO can lift more than you can bench
I know if you put in more than a week or 2 you can lift way more than 80 pounds
I'm a grown man and I appreciate this content
Lego man: There! There he is!
The one torturing innocent Lego bricks! 😱😱😱
"But can it lift my spirits" yes, of course it can, it's lego
When i see little machines like this struggle to lift weight that is cake for nearly any human over the age of 7, i am immediately more impressed with our anatomy and how a similar sized body part (arm) can lift 10x the weight
Yeah try lifting 35kgs at 7.. good luck with that
When I saw the thumbnail, I thought it was gonna be able to lift a car for some reason, honestly I’m surprised it doesn’t Legos are pretty strong
almost 80 pounds!?!? Madman! This is awesome! XD
fr tho just imagine you're one of the little lego dudes and you have to work on that thing if it breaks down.
You should take all of your broken gears, and melt them down into either other new Lego parts or sell them as some kind of merch (Lego-engineering themed trinkets and such)!
The first two iterations are like watching my grandmother do weightlifting... 😅
i like how it slowly just gets more and more ridiculous
This damn lego probably stronger than me
some strong ass lego
This guy has a degree in lego civil engineering.
Damn I’ll use that as a jack stand this weekend thanks for the safety hack!
This person is really inteligent to build this machine 👏👏👏
I highly recommend you get some 3x19 frames, they would’ve helped so much in all of these designs!
bro got creative with the weights at the end xD
This is the best Lego technic lift ever 🎉😂❤!!!!!!!
Thanks for the comment and support!
@@BuilditwithBricks OMG OMG 😱 IS THIS REALITY HAPPENING THE PERSON THAT STARTED THIS SHOW IS REPLYING TO MY COMMENT?
@@BuilditwithBricks 😱😱😱
If you just gear it down low enough, you can lift any amount of weight you want it just takes more time to do so
Unless the materials break. Newton's laws-action reaction. If the force required to lift the load (greater than the mass times gravity) is greater than the yield strength of the material (ABS in the case of LEGO) then the material (axles and/or gears) will deform rather than lift the load.
The second design has a cardinal flaw making it less effective than it is. You spun the gears the wrong way causing the strings to bend over the frame at almost 90°. Due to the tension they are under it will cause a lot of friction resulting in loss of lifting capabilty.
You should do the weights in different units of measurement so it's easier for some of us to have an idea of the actual weight.
What's that, like 6 AA batteries and less than a kilo of Legos lifting a 9 year old? That's actually mind bending to think a kid could stand on that last one and it would support his weight at all without collapsing, much less be able proactively lift him up.
I was surprised at the lift/weight ratio too. I think there is probably room for improvement with a greater lift possible. Stay tuned for part 2 at some future point! Thanks for watching!
4:05 Looks like you need a counter weight on that other side
More like some gears in the base that keep it balanced. That'd be more stable.
3:32 That indeed is an upgrade.
Now I'm wondering if gearing down + worm gear and rack would reduce some of the gear slippage 🤔 need to go buy me a load of technic to find out 😂
Hi, thanks for the comment! Yep, Lego gears down really easily but the extra torque puts a lot of pressure on the plastic components...
@BuilditwithBricks yeah I can imagine! I lost many a gear tooth when I was younger trying to make lego do things it was never designed for 🤣
My record was 65 kg but it can be much higher dont slow down your motors do everything with the cable
Lego can lift my bodyweight when I step on a Lego brick 😢
You people build amazing things but sometimes engineering is still a challenge.
I'm no engineer of sort but I've seen some major flaws in the pulley system, ofc it failed splitting the gears which is what I didn't notice at first.
That thing is bending, and the torque needed to start the pull is higher than from 50% on. It all spreads trough the structure, and imo it gonna crack it after splitting the gearbox at 2:00 and before consuming the wire against brick's corners.
You apparently need a stronger chassis, its kinda disappointing that the main point of failure there are bricks connection and not power or simply the ABS the material itself.
I enjoy all these experiments video tho! :)
That is a cool scissor lift :)
Thanks!
Whoa! That’s a lot of weight!
The lego every month before gains: “Can you spot me?”
The problems isn't the motors, it's the gears, they slip too much.
makes me happy during shroom trip so it works
Everyday we get closer to legos phasing out other technology
Bro had to go to the outside weights!
Now think of how much it could lift if you rigged up four of the final version into one thing.
you should do like a 1:1000 gear ratio
I do feel like there is a part two to come at some stage..
*Me Applauding* i am impressed, putting up that much weight is pretty cool to see. Good job!!!!
5:00 is too funny
Can it lift a tungsten cube though?
Nice i like Those Upgrade steps you Show in this Video
Ah thanks! Glad you enjoyed!
It would be easier to get a better grasp on its maximum capacity if you put it on a scale, and above it you have something really heavy that it definitely cant move. Then crank it until it wont go any further and subtract the starting number on the scale, thats it's maximum capacity
Im really impressed i didn't thought lego could lift so much. Awesome engineering and design 👍 could you do a maybe a yt short where you try the last Design just doubled? So 4 motors and 4 sets of gears and a higher gear ratio.
If the fragile plastic is the problem then the solution might be distribute the weight on even more gears?
I got really curious and was already anticipating a bit that you would push the limits even more after i was surprised that often :D you might remember as well another youtuber (i forgot the name) who used gears and axles made of some kind of metal that would help a lot but it wont be legos but im sure it could also lift even up to 50kg with your clever engineering
Next: building a lego press an crushing different things
Cool scissor lift
Amazing video, i can see you put time and effort into making these marvellous machines 👏 subscribed!
Thanks very much! I appreciate the support!
So i can build a carjack with enough Legos
Needs XL motors and at least 4x gears per stage to spread the load, not 2x.
When you run out of weights and start adding random stuff 😆
If you had enough Lego, you could theoretically lift an infinite amount of mass.
It can't, it would simply fall apart due to the amount of stress needed with an infinite mass, and Lego can't even lift alot of weight anyways.
@@cablecar3683 Of course, provided that you reinforced it. We're taking a theoretical situation where the axles, bricks, gears, etc, are indestructible, and the only variables are the weight and the motors.
@@Mr._Bellic Interesting theory actually.
If stress wasn't a thing, technically you could lift things much heavier than a few weights, maybe even lift entire skyscrapers.
@@cablecar3683But then its no longer "lego" but some lego resembling thingy ;)
In this case he seemed to limit him self to 2 motors (not sure on the last one but it looked like it. And then there will be a limit on power transfer and losses.
But yes, if you are prepared to go very slowly you would be able to increase the load quite a lot.
"it is just a small upgrade"
*the upgrade:*
I wish this video just kept going
I somehow expected it to lift 40kg judging from the thumbnail 😅
I feel like the tests done with the scissor jack are not completely accurate since you were putting force on it with your hand. For a clean controlled data it would have to be unchanged by external factors.
lol ran out of weight, must find heavy objects!
Maybe one day we will see lego lifting car. 😛
This is awesome! Best yet!
Thanks!
If you create a (+) shape, you might have more power and more stability. Even 45 kg could be lifted.
What about worm gears to lift the heavy weight?
78lbs, that's nuts
Make 10x12 13 actual l\3 sized tank that meets the accurate requirements like holding 20mm rounds, going 40mph,being small, looking right,can climb,cannot break apart without falling,has feul(water), has gun that shoots round,has turret that rotates 5°per second and has 2 layers of aourmor. Then invade the local daycare... In 35 days MAXIMUM. Or just invade your local playground
Now make one that can jack up a car
what about trying the last design with worm gears instead of gears?
Why did I imagine you creating a Bench pressing robot xd
whats the weight in freedom
Ahhh this shit can almost lift me
Scissor lifts are not the most efficient at lifting high loads to begin with, especially when starting out flat
This was really helpful! Do you share your designs/parts lists?
Never skip Lego-day
that's quite some engineering, are you an engineer by trade or is this just learned from experimenting with builds?
Never Skip Lego Day !
The block and tackle was flawed, most of the energy was being lost right at the pulleys where the cable was being drun against the grey pieces
all u needed was more triangles, u had the gear reductions already
Kilograms?!? Can a subscriber get some freedom units on these videos too? 😂
Next is mjolnir
Only if you're worthy!