Requested Lego Experiments 3
čas přidán 4. 06. 2023
Random Lego experiments requested by viewers. Enjoy!
00:00 Generate electricity
00:37 LED light bulb
00:57 Gravity light
01:45 Chain link mount test
GravityLight by deciwatt:
deciwatt.global/gravitylight
Superbike video by Christoph:
• RC Superbike - St...
To request an experiment, just add a comment here. Alternatively you can send a message in Facebook ( BrickExperim...) or email to the address found in the About page.
00:00 Generate electricity
00:37 LED light bulb
00:57 Gravity light
01:45 Chain link mount test
GravityLight by deciwatt:
deciwatt.global/gravitylight
Superbike video by Christoph:
• RC Superbike - St...
To request an experiment, just add a comment here. Alternatively you can send a message in Facebook ( BrickExperim...) or email to the address found in the About page.
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Komentáře: 986
I love being able to hear the difference when the motors are powering the light
Yeah why is that?
@I killed that beard guy because there is a load (the bulb), so it's more difficult to generate the same voltage as before, and the motor slows down
@I killed that beard guy When the light draws current, the motor creates opposing forces (eddy currents)
@Waldo Lemmer thanks
It's one of my favorite way to visualize the concept of "borrowing" energy, and not "generation" of energy. And also to negate all those "free energy" stuff
I've never thought of generating electricity with Legos but now that I think about it, it's really cool
Time to build a Lego car now that he has electricity
Well electric motors are just generators if you spin it manually.
You can make a mechanical wind mill that lifts the weight, then drop it to power a light.
But wait there's more
If you get the 7142 motors and connect them to each other, they turn at almost 1:1 under no load, its amazing how well it works even slowly turning it. Newer motors work no where nearly as well.
Huh. I'd always put chains on gears with slots facing inward without giving it much thought, assuming for some reason it'd be more structurally sound. Today I learned outward is technically better. Thanks!
اَلسَلامُ عَلَيْكُم وَرَحْمَةُ اَللهِ وَبَرَكاتُهُ. Assalam o alaykum
@Hammad Mughal can you actualy type something usefull?
@Hammad Mughal و عليكم السلام و رحمة الله و بركاته
@fireworkstarter what is the use of your comment?
@Mohammed Bassim Ablais whats the use of your comment?
As Lego combat robot builders, the chain test has got to be one of the most important discoveries made in a long time. Thanks for doing that!
A logo combat robot... that sounds sooo cool
@Riva Houkes Can confirm. It is just as awesome as it sounds.
@Riva Houkes just check his channel
It makes sense that the chain links facing outward would perform better with increased torque loading. When the gear pitch angle pushes the chain outward, the outward facing links will not pull apart
I think exactly that point may have been overlooked by many people - if done right, the chain links may be considered a reliable power transmission. Another great tip for long distances of chains running free: They will vibrate in form of a sinus ware, therefore adding a part at the inner side for countering the wave out also helps a lot - because if one imagines the chain links in a still show when they are forming a form of sinus, some of them also get in the bad angeld position of the pin opening allowing the pins to slip out more easily.
I loved the close up shot that showed exactly why the inward-faxing chain was weaker
You're thinking of pressure angle, not pitch angle.
@SuperAWaC quite right!
Inward will be better if u looking for a way to NOT break any chain link. At given too much force it will pop up more likely than break. I think. Corect me if im wrong.
It's amazing to me how attaching the light audibly slows down the RPM.
it increases the resistance on the generator 😁
I agree. It's so cool to see how these physical things actually interact with each other and know why it happens.
True, it’s super cool! And on the voltage meter you could see the voltage reading decrease a lot too
Try to squeeze as much time out of that "Gravity Light" system as you can, maybe adding weight and using pulleys? It just feels like that concept has quite some potential. 👍
it that a pun
@sachin shrestha I didn't even realize that lol... I mean, yeah, it was totally intentional :)
Increase the gear ratio and the weight. Then strengthen whatever breaks. Use the usual techniques to reduce the friction in the gear train. Refer to older videos on this channel to see examples of gear train optimization. Keep increasing the run time until it is time to edit and publish a video. I suggest reporting the run times in terms of seconds per meter of drop. [Edit: I originally wrote minutes per meter, but that adds an extra conversion for a high school physics student putting data into standard units.]
@hamjudo nice, exactly what I meant 👌
That feels like to old mousetrap cars
That falling weight light thing is actually so cool. I can see something like that being great for children as an alternative to night lights, so instead of having a light on constantly, the parent just clips the weight to the top and it goes down. 5 minutes may not be enough, but with a better similar system you could quite easily draw it out to 15 minutes, which should be enough to fall asleep in, or if not then just do it again. It would also work well for night time toilet trips as a temporary light source that goes off by itself.
you can just buy LEDs that are on custom timers, and it would be a lot cheaper. You can also buy light switches that are timers; I have one for my bathroom fan
Based off pfp
Yoy can also get like a led light with a timer. Wouldnt make any plastic whiring noises either
@Tony point is that those use power, this is making its own.
@metformin sure, but an led such as this could be powered by a single AA battery and last for weeks
Depending on which side you point the chain, it can either be a very strong link or a failure point. I think this might be intended, considering there's other methods to link up plastic chains that are stronger (old Xerox printers, the big ones, had plastic chains, they were quite strong, but if you exceeded the breaking point, they'd snap).
One of the best thing about dude is that he never takes credit for himself when he achieves something. He always respect us, the audience and his team, and he is polite in all his videos. We congratulate ourselves on this achievement more to come.
And he's smart as hell too, gotta love this lad
His team?
@nonrumor you know, him and benny
The biggest difference for chain link orientation is if they are used as treads, for a small powered tank for example. If the inwards method is used, obstacles will very often cause the chain to split, while if the slots are oriented outwards, the chain will hold.
0:41 You can really hear the power pull on the generator Slows it down a bit
Oh great First two replies are P-RN ads Sometimes I hate commenting Cause these are the only comments I get
@Celebrity X Cruises Just report them and move on. CS-tv will learn...eventually
@tipoima “Eventually” More like never Since 2018 CS-tv hasn’t fixed any of the issues of this app they run Plus new spam bots are here and CS-tv isn’t doing anything about it It’s not a mistake, it’s a MASTERPIECE spam bots are on every video
@Celebrity X Cruises yet, they deleted the dislike button and some other shady updates
That test with chain was genuinely surprising.
Can I just say that I love the sound that the 71427 makes when you spin it like you did at the 1-minute mark? It's very unique if you ask me.
I didnt even think of the differences between inward facing and outward facing ones would have. Now that I see it, of course the inward facing links do poorly against higher torque! Love your videos man, keep em going!
this is awesome. I love this. More power generation idea's would be cool. Like a bunch of generators in series. Also maybe hook them up to a windmill turbine?
That's cool. Can you set up that gravity light with a ratcheted lego chain. I can even imagine opening a closet door that pulls the chain, charges the mechanism and give you enough light for a couple of minutes. Always loving your video, thanks for making them!
I've watched every one of your videos and I don't know if I'm the only one who is highly addicted to the building sounds from your older videos? The clicking crackling and snapping is so enjoyable! Make more building videos of the older style 😎
I loved the Lego grav light, I wonder if there was a way to make that more efficient to power something bigger?
gravity battery
At its core, it's what pumped storage hydroelectricity is. Gravity pulls water, it turns a gear, and produce electricity.
Reminded me of one of those old clocks.
You could use an RC brushless perm magnet 3 phase motor, they are more powerful and likely to last longer
@Cley Faye Hadn’t thought of it that way, but totally.
Very interesting test results. Since the chain-tracks are always assembled slot inwards, this suggest to make supplementary chain drive by a slot outwards standard chain, if utilized as heavy load conveyor belt.
You are amazing, love Lego, love the gravity generator idea, I love this!! I’ve been thinking about this exact idea for a project I want to do. Can this be taken further with a heavier weight and more gears to generate for an hour? I would love to see how long you could generate electricity in a future episode. Thanks, and keep building!!
Wish you could do more water related experiments. I loved your submarine videos.
I was curious about the chain as a kid. I would link them in alternating pattern because I thought one side would be weaker than the other depending on application.
Only thing wrong with this channel is the low amount of uploads :P Keep up the good work!
Thank you very much for doing this extensive testing regarding my question / observation of the chain links. ❤ For all who are interested in seeing more of my RC Superbike project (a fully functional RC motorcycle made out of bricks) may visit the projects' playlist: cs-tv.org/plid-PLzvdTW1ku_J92taKmm1HXZ6wYnRwD1j8y
you are becoming a true researcher this way! nice experiments
for a minute, the first one looked like free energy, then I remembered that voltage and amperage aren't the same thing and there is still more power being consumed by the drive motor than is being produced by the driven. Powering a light bulb demonstrated that pretty well considering how much of a load the light bulb put on the drive motor.
What a great demonstration of the physics of power generation. I love these videos; Good science, practical uncluttered demonstration, no nonsense or filler. Great!! I could watch this kind of science all day; with box of lego to hamd. The sprocket chain question is interesting too. Yes, the chain can handle more torque with the quick link hooks facing outward but to answer the question more accurately.... I suspect Lego designed them to come apart at a certain torque to prevent them from breaking. With the hooks outwards they wont be forced open by centrefugal force but they will stretch and produce slippage which will shred the gear teeth. Using a chain tensioning mechanism prevents slippage but allows more strain on the hooks which will snap or at least deform. Like I said, This video and methods are Good science, Good physics with easy to see demonstration of the facts and principles. School would have been much more fun and easier to digest with this type of experiment. Thats why im really happy about the current (2022) influx of S.T.E.M. construction kits available now at low cost and in use in schools.
Nice, like it that you can hear the motor work harder when you put on the light. shows that used energy needs more power
Incredible that you can actually hear the electrical load being put on the motor-generator. That's sick.
It would be great to demonstrate concepts like energy, power, current and voltage using LEGO motors. Thanks for another fun and interesting video.
I noticed the motors generate power when I had two motors in parallel and when I turned one, the other would also turn, even though the motors were both connected to individual wheels (i had 4 motors, 1 for each wheel, 2 in parallel on the left, and 2 on the right)
This man’s engineering is on another level.
have you ever made a steam-paddle boat with lego? I think that'd be a cool project to see (idk the exact term for them)
How would you make steam with lego, lego melts at 120 degrees celsius
@MarcusNielsen Not powered by steam, but have the movement be done by the same paddle thing you see
I love how with the lightbulb he could just get a battery out of the battery box and use that.
Great idea to use the gravity to produce light ! 5 minutes is great you just need to have a way to bring the water up and you have a real light !
Would be cool to see different variations of the gravity light
This is a bot.
I never really thought of light being able to put a load on the gears and cause some resistance. I mean it makes sense, i just never really thought about that. That's insane
"Worse" in this case breaking at lower tensions due to the geometry and angles of the forces across linkage. If you forced the links to break with the slots outward I suspect the damaged to the chain would be worse overall. All about what you looking to achieve.
1:22 lowering 0.9kg for 1m over 300 seconds (assuming g=9.8m/s^2) ideally generates 29mW, so with the voltage of 4.4V it would generate (maximum) 6.6mA.
Suggestion: 1. Test and measure how much Lego pneumatic pistons can pull or push on different pressure 2. Build a Lego pneumatic engine (LPE) using pneumatic pistons and power it using real compressor to test how much rpm and pressure it handles
The gravity one is super cool. I wonder what would 50-100+ kg generate. Let’s say first u build bike powered pulley system to get the weight to certain height, then it would come down to charge a big power bank. would be great emergency generator during power outage ;)
I bet you can build a Fusion Reactor out of Lego way faster than the scientists in france can
Your videos are so relaxing and satisfying like ASMR
These weekly Lego experiment upload schedule is getting more better
Love these experiments, keep em coming
I have an actual experiment idea, what if you created a truly amphibious lego submarine (it can become a sub, a boat, or a car on the fly). I personally recommend using the Sub 2.0 design to start with.
Here is some help for power generation, first use a bridge rectifier, then on the other end of that use some capacitors to even out the pulses, and there you go you got yourself a simple DC power generator
This series is starting to remind me of the old mythbusters!
this man is prepared to create his own machines on the end of the world, mark my words
You know how you did the big vortex bucket I think it would be super cool if you made an even larger vortex bucket and put little lego boats in it.
I actually increased voltage like that when I was a child and I was very proud that I invented a way to make the lego lamp much brighter than normal :D
Fascinating! Learning some cool principles here.
Could you make the gravity light charge up a battery to pull the weight up? And see how long it cycles for (splitting up the current to do two tasks)
Комментарий в поддержку канала и ролика, а также труда лего-мастера.
The gravity light is a good idea. They should be using the idea with solar during the day to lift weights/spin up a flywheel, wind up a spring/pumped hydro, for use overnight night. How about a lego waterwheel to produce some power?
It’s amazing how we went from barely knowing how to use a circle to making fully functional machines out of a children’s toy
Cant wait to come back in a 10 years and find that you’ve made a particle accelerator out of legos.
What happens when you add more gears and motors to the generator? Does it generate more power?
Have you ever tested the max rpm with a chain?
If you had two high speed spinners going opposite of each other connected with a lego, could the lego tear in half?
he tested that with an aluminum rod a few years ago and snapped it clean in two, so a lego brick is probably just as screwed
@Youmu Konpaku Oh cool, I only recently found this channel so I haven't watched all the videos yet
I love these please keep them up!!
It would be cool to see a Lego wind farm or hydropower generator using a propeller and a reversed motor
What about the idea of connecting the electrical outputs of multiple generators in series? Or powering the generators with a water or wind turbine?
The coolest part is seeing the motors struggle when they power a light
I wonder, is it possible to create a firing gun out of lego pieces? If so, could it be semiautomatic?
IDEA: mechanical wind mill lifts a weight, via a chain, when dropped, it powers an LED.
Congratulation, you invented a battery :)
@Cley Faye eco-friendly battery!
Expanding on the generator suggestion, I think you should use it to power the LEDs in a Lego House
Wonder if this could be used to generate electricity at amazing voltages
What is the least possible loss of electricity you can get with a motor connected to a gear train connected to a generator?
Love this series!
Push the gravity light idea to his maximum! Looks like effortless light! Gravity does all the work
loving these short frequent videos!
I never realized that legos had such POTENTIAL for energy. 😉😂🤣
Differential gear drives would be reay neat to see!
What is the most amount of energy you could create using any build? Edit: ( i mean it doesn’t matter what build, as in you make it or choose it)
dudes been having a nice flow of videos nowadays
I love these requested experiments videos
Would the generator damage your motor from over revving it?
Its UNDERrevving it
No it's over revving it because of the gear ratio
Thanks for the info, BEC. I'll make my chains slots outwards from now!
Can you make a video where you test the speed, power and power consumption of each motor?
You should try making a lego wheel spin really fast while using some of your more unorthodox gears. Like for instance the worm gear or that big grey ferris wheel looking one
Ok
You should try to make a functional analog clock just using gearing a single motor to power it
It could be interesting make a fan powered wind turbine or a mill.
Chain test - we never stop learning 👍
this is a bot.
The end of this video is crazy!!!.. love having the answer for the chain inside or out!!!
it could be intresting see the max speed a lego car can reach using standard motors and standard wheels and in witch configuration is faster
Can you try use propellors or something to make a terrifying motor powered cutting device that can slice through fruit and vegetables?
Using your gravity generator, make a gravity battery which stores electricity by raising an object and, on demand, begins lowering it to reuse that energy.
Idea, you could solar power the battery for the generator, and then use the generator for one of your house lights haha
What I would love to see is a thermic engine, like in RC cars, used with legos, with the requiered precautions regarding thermals of course. I've never seen that anywhere despite searching for it, and I'm surprised that people are not even trying.
the inward vs outward was interesting, and informing.
Is it possible to build something that powers itself (nearly) indefinitely?
What's the maximum weight you can lift at least 20cm off the ground using an all lego crane?
Can you make a surveyor’s wheel (distance measuring wheel) out of lego that counts distance?
its the same amount of power going in as coming out minus the friction loss. the higher voltage is running at less amps, hence its still the same amount of watts .
Do a Rube Goldberg please!
Could you power a gaming console with the lego motors? Lets say like an older system like the SNES. I believe that only requires 12 volts... Would love to see it!
These videos are perfect for when you're on a lunch break.
What is the cylinder connected to the motor in the first experiment? Is that a solenoid or is that in the small box connected to the Digital Multi-Meter?