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I get the assignment is to use rubber bands, but to twist rubber bands in a spiral, or to roll them up is actually a really inefficient way to store rubber band energy. Their energy is far better served with being extended out freely. While yes, this will create a lot of force and short movement, its the ideal way to power something with an escapement mechanism like a weight would, that swings a pendulum or spins up a large wheel. If you really want to stick to the windup, add a rope to the rubber bands and wind up the rope, stretching out the rubber band, As you wind up rubber bands it will bind and the inner spool isnt as stretched out as the last winds.
Agree, getting a good long stretch definitely feels like the best way to do it. That was the idea behind the pulley concept - to stretch the rubber linearly over a significant distance. Admittedly, I did a pretty crap job of designing it, so I'd love to revisit that idea in another design at some point!
I'd like to see the hand crank replaced with a well geared foot pedal, charging your phone while being anxious seems like a good use of that state of mind.
You should probably come up with a flywheel and some kind of wind up mechanism which would allow you to simultaneously crank up the weight and still be able to power the load.
I think you could try to use a bunch of small rubber bands in parallel and then just stretch them linearly, no winding then up. then gear up the output massively. That way you use a small amount of space to store the energy and it allows for easier expansion of storage by just adding more small bands
You can also use rubber bands for (super inefficient) refrigeration. No, I am not kidding you, stretch a rubber band and feel it with your lips, it gets noticeably hotter as you stretch it. Then hold it stretched for a few seconds to let it cool to ambient temperature, and let it go back to its relaxed state, it will be noticeably colder than ambient.
Holy shit dude, this is awesome!! I hope to see a video with a gigantic generator using the slingshot rubber, maybe you could try doing it like the slingshot works? I also cannot wait to see the gravity video!
11:39 I realize you're a lego channel, but lego is the limiting factor when you've got massive forces like elastic band or *twisted rope*. Use fitness bands. Scale up. Lose the plastic. Increase the gear ratio even further so it takes at least a minute. Figure a lever for a human to stand on every minute that resets the internal rubber band. Boohoo, you have to take a step once a minute to charge your phone and run safety lights when the power goes out :P
You're 100% right, Lego is a major limiting factor. I've made a great many generators, and Lego always turns out to have severe limitations on how much torque can be handled - both on the input, and the rotor. Though I'd like to experiment more with some aluminium Lego pieces 😉 Then we can put it under much more stress
That'd be a fun experiment. I've a suspicion using a standard Lego XL motor and cranking it could be one of the highest efficiency generators you can do with Lego.. But where's the fun in that 😉
Rubber springs are definitely not even close to an ideal power storage medium. Friction between the elastomers turns quite a lot of this stored energy into heat. A coil spring or, as mentioned, gravity driven mechanics, will perform much better.
I'm kind of interested in that concept too. Though you'd need a commutator or something to accommodate the moving wires, which adds a lot of complexity
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(*Not applicable on Lumino, Textra and Limited Edition)
Try doubling the magnet🤔
Could you try use lego motors to power a lego motor like this with magnets and coils 😂😂❤❤ please😊
"THERE'S NO FREE ENERGY"
electroboom-
There sure isn't! My wrist can feel the aftermath of all this...
Legend has it if you say 'Full bridge rectifier' 3 times into a mirror, ElectroBoom appears 🤔
Full bridge rectifier, full bridge rectifier, FOOOOOOOOL BREEEEEJ RECTIFIEEEEEER
I'm eager to see a gravity battery now that you bring it up.
No pun intended
It really makes you think about how much energy the smallest of processes require. No wonder we're causing our plant to overheat
For sure! I'm always amazed when thinking how much mechanical work is being done to power something like an oven or stovetop
I get the assignment is to use rubber bands, but to twist rubber bands in a spiral, or to roll them up is actually a really inefficient way to store rubber band energy. Their energy is far better served with being extended out freely. While yes, this will create a lot of force and short movement, its the ideal way to power something with an escapement mechanism like a weight would, that swings a pendulum or spins up a large wheel.
If you really want to stick to the windup, add a rope to the rubber bands and wind up the rope, stretching out the rubber band, As you wind up rubber bands it will bind and the inner spool isnt as stretched out as the last winds.
Agree, getting a good long stretch definitely feels like the best way to do it. That was the idea behind the pulley concept - to stretch the rubber linearly over a significant distance. Admittedly, I did a pretty crap job of designing it, so I'd love to revisit that idea in another design at some point!
I'd like to see the hand crank replaced with a well geared foot pedal, charging your phone while being anxious seems like a good use of that state of mind.
Ooooh I like the idea of a foot pedal
FULL BRIDGE RECTIFIER
Next up : Lego fission Energy: making power from uranium 235
You should probably come up with a flywheel and some kind of wind up mechanism which would allow you to simultaneously crank up the weight and still be able to power the load.
I think you could try to use a bunch of small rubber bands in parallel and then just stretch them linearly, no winding then up. then gear up the output massively. That way you use a small amount of space to store the energy and it allows for easier expansion of storage by just adding more small bands
You can also use rubber bands for (super inefficient) refrigeration. No, I am not kidding you, stretch a rubber band and feel it with your lips, it gets noticeably hotter as you stretch it. Then hold it stretched for a few seconds to let it cool to ambient temperature, and let it go back to its relaxed state, it will be noticeably colder than ambient.
Holy shit dude, this is awesome!! I hope to see a video with a gigantic generator using the slingshot rubber, maybe you could try doing it like the slingshot works? I also cannot wait to see the gravity video!
Appreciate it 😁 I'll for sure play around with gravity generators a bit!
Under an hour Broski
Phones these days are good up to 20v because of Power Delivery, I have no idea how they deal with it being uncommanded though, Worth a test
Gravity would be really cool. Also the pulley design could be better if you stacked the wheels on the side?
11:39 I realize you're a lego channel, but lego is the limiting factor when you've got massive forces like elastic band or *twisted rope*. Use fitness bands. Scale up. Lose the plastic. Increase the gear ratio even further so it takes at least a minute. Figure a lever for a human to stand on every minute that resets the internal rubber band. Boohoo, you have to take a step once a minute to charge your phone and run safety lights when the power goes out :P
You're 100% right, Lego is a major limiting factor. I've made a great many generators, and Lego always turns out to have severe limitations on how much torque can be handled - both on the input, and the rotor. Though I'd like to experiment more with some aluminium Lego pieces 😉 Then we can put it under much more stress
this guy is the real life tony stark
9:00 mm yes, the taste of electricity, very taste good.
how do people even figure this stuff out 🤯
one potential project i see is building the most efficient hand cracked generator.
That'd be a fun experiment. I've a suspicion using a standard Lego XL motor and cranking it could be one of the highest efficiency generators you can do with Lego.. But where's the fun in that 😉
Like playing with a megger, you just HAVE to self-test it.
Gravity piwer seems promising, that would sure be interesting to see!
Will mess around there a little 😉
Rubber springs are definitely not even close to an ideal power storage medium. Friction between the elastomers turns quite a lot of this stored energy into heat. A coil spring or, as mentioned, gravity driven mechanics, will perform much better.
hydro electric sounds cool too
Bro is cooking the greatest videos I didnt even notice 20 minutes fly by
Aw shucks that's a hell of a compliment, thanks a lot 😄🙏
7:25 "uh, oh" 😂😂😂
This horrible machine hoovers up metal stuff like you wouldn't believe 😬
Now we need a Lego gas (the car fuel) engine (if I said smth wrong I’m sorry I’m not that good in english)
4:54
Jupiter be like:
please do gravity powered mechanisms
What about storing energy in giant flywheels
Hell yeah, that's definitely on the list! Would love to try suspending a 25kg bumper plate on a cushion of magnets, and then spinning it up.
love it
Yes, gravity is great but because you made a crank shaft how about a pressure/steam engine?
Make something that winds the coils for you
Next up lego nuclear reactor car
Great video man, keep it going!
Thanks a lot 😁
Would adding a flywheel allow for the magnet to spin for longer, or would the increased weight just mean more drag?
That's a good point, a flywheel could preserve some of the energy that otherwise goes to waste
You're the best
Given the mass of your magnets, perhaps you should be spinning your windings.
I'm kind of interested in that concept too. Though you'd need a commutator or something to accommodate the moving wires, which adds a lot of complexity
Hm yes lego engineering
You deserve a sub
Aw cheers for joining 😁
''noodely dudes''
bro! just install a simple buggati v16 on the generator
Umm... if I were you, I would put a warning about flashing lights somewhere...
Lego wind turbine?
69 likes
Noice
Oo
HI
First
First comment💬
no I was first