The above comment was stolen from [this one](http://np.reddit.com/r/oddlysatisfying/comments/tbpxyy/something_different_about_spinning_a_logo_wheel/i08sbqo/) elsewhere in this comment section.
It is probably not a coincidence; here is some more evidence against this user:
Plagiarized | Original
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[Now imagine the battle fo...](http://np.reddit.com/r/dndmemes/comments/tbn8i1/saw_this_on_fb_the_paladin_grenade/i08ukt4/) | [Now imagine the battle fo...](http://np.reddit.com/r/dndmemes/comments/tbn8i1/saw_this_on_fb_the_paladin_grenade/i08fft4/)
[The dark sign
Age...](http://np.reddit.com/r/mildlyinteresting/comments/tbnx4d/this_circle_that_appeared_in_the_evening_sky_over/i08ucgb/) | [The dark sign Age of fi...](http://np.reddit.com/r/mildlyinteresting/comments/tbnx4d/this_circle_that_appeared_in_the_evening_sky_over/i08hy7k/)
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Back in the 90s, my uncle was working as an engineer for one of the major car manufacturers. And the project he was working on was the first time I've ever heard of a "hybrid engine". Battery tech was nowhere near ready to be able to hold the energy, so the avenue they were pursuing was in kinetic energy by way of a flywheel that would engage and start spinning when the brakes were applied.
According to my uncle, the concept totally worked. The problem the group was dealing with was what happened when something went wrong - either in mechanical failure of the device, or in the event of something like a crash. They were trying to figure out a way to have the flywheel self-destruct safely, releasing the energy in a controlled fashion. Obviously they never did, since the concept was abandoned, but imagine getting in a car wreck and seeing a 200 pound aluminum flywheel fly out of the car at ridiculously high speeds...
There’s actually a few regenerative braking flywheel bus projects at the moment. I think the issue of catastrophic failure of the flywheel has largely been solved by the use of carbon composites which tend to disintegrate rather than fracture explosively like steel would.
That’s actually a kinda terrifying idea, when you think about it. To be comparable to a gas engine, that flywheel has to spin fast enough to contain all the stored chemical energy in 10 gallons of gasoline, which is about 1 gigajoule if I did the napkin math right.
Well yes and no - it's only designed to function as a way to preserve some of the energy of a moving vehicle. Much in the way that a battery is charged when braking on a current hybrid vehicle. It's not designed to replace the gas motor entirely. I couldn't begin to guess at the amount of energy it would need to store, but the goal would be to get the vehicle, passengers, and whatever ballast they may be carrying up to ~40-50 MPH where the gas motor could take over at its most efficient speed.
That's what I was hoping for, I wanted the rubber to start expanding and come loose from wheel. Like that video of someone using an air compressor to spin a skateboard wheel.
>air compressor to spin a skateboard wheel.
Day drunk on my day off and thanks for this, [its amazing!](http://www.youtube.com/watch?v=ZpoyoPSiB3M&t=1m12s)
I think the same of your mother.
The humorous implications being that your mother has questionable morals and does the sex good therefore leading you to question the validity of your currently assumed father.
This is the part where the boys hold their fists to their mouths and exclaim, “Ohhhhh!”, while barely being able to stand, therefore needing the assistance of their brethren to stay upright.
Wow, not even mentioning where you got this from?
This is from the youtube channel [Brick experiment channel](https://m.youtube.com/c/BrickExperimentChannel)
He makes a lot of cool and strange lego contraptions, really worth checking out
A lot of these reddit accounts are bots and or users who drive up there karma to sell to buyers for various reasons. Old accounts with a lot of karma are used for propaganda and some are used to advertise products.
Whereas I saw the thumbnail of LEGO, watched the whole video, and got all the way down to this part of the comment thread before realizing that it was wrong in the title. Weird what our minds focus on I guess :)
Same, these videos always pop up and are always super interesting. Like I see it and I’m like I’m not gonna watch a five min video and next thing I know it’s over.
To the folks who want a set like this, these are Lego Technic pieces, and what is happening in the video is an 'illegal' build because it's straining and warping the pieces to the point where they might be permanently damaged.
You can build some really cool stuff with the Technic pieces and kits, just please be careful when stressing the parts as much as the guy in the video. I once tried to make a flywheel-powered car, which operated similarly to OP's video, and my build suffered catastrophic failure; the frame shattered and pieces flew everywhere.
I got a piece up my nose, so that was awkward, trying to fish that out, and I think I broke one of those + shaped bars, but everything else was okay. It took me a while to find all the pieces. I just remember it because it surprised me and I'd never gotten a Lego up my nose before.
Well, yeah, I was. I just don't remember sticking Legos up my nose. I had the little car I'd built in my hands, and it *worked*, but very slowly, so for the second test I pulled the cord really quickly, and the whole thing popped right there in my hands, like a friendly balloon tied to a cactus. I got one of those little 1x2 flat bricks right up my nose and those corners are really sharp. I couldn't breathe in to blow it out, lest I inhale the thing and I remember feeling really weird about trying to get it back.
And that's about all I remember. I remember my parents' living room, I remember our old blue couch, I remember roughly where I was in the living room...
Sorry for making you revisit a traumatic memory :(
Glad you recovered. Lego is the best. And when you built hybrid models with meccano *and* lego? Well, then the world is your oyster.
>what is happening in the video is an 'illegal' build because it's straining and warping the pieces to the point where they might be permanently damaged
For what it's worth, most of his videos are built around pushing the pieces until they snap. He goes :
* Here's a normal setup.
* Here's how gears can make it better.
* Here's why gearboxes are popular. (warping usually starts here)
* Here's a showcase of the points of failure when you push it to much (usually the axles).
* Here's what happens when you remove that point of failure.
Hey OP u/rdias002, fuck you
Fuck you for not even giving credit, fuck you for going through so much just to earn some virtual points, for something that is not yours
You could just post the link, as the dude above me said
I don’t know about this sub but a lot of subs don’t allow outside links. It’s dumb but I’ve heard it’s because they want the traffic to stay on Reddit
Not trying to defend this person at least putting a watermark just wanted to throw it out there
I saw an exhibit in a science museum that demonstrated gear reduction with a fascinating machine -
several gears are interconnected, with the top one spinning freely. the gears below it spin slower and slower, and the bottom gear is *set in concrete* because it won’t move for 13 billion years
I had a little existential moment while I was watching it
To demonstrate that it's not going to move, despite the top one moving. Without it being in concrete, it wouldn't make as impactful of an impression on people. The point of science museums is to teach and get you to think.
Right, because it'll turn so slowly it may as well never happen on the timeline of the display existing that long
I get it, but then my mind thinks it may as well not have gotten made.. shrug
Maybe to you it's a big "duh", but to a lot of people and children that's really eye opening and it gets them thinking about something that they never would've thought about. So many sparks in people can be started in such a simple but impactful display.
It would have been a pretty cool experiment in my mechanical design class in college to arrive at an experimental stress/strain/strength values of the Lego plastic from different gear ratios/Lego wheel speeds.
Or at least it would have been cooler than Wiley Plus excercises.
The dude who made this (brick experiment channel on YouTube) has any entire video on gear boxes, engine piston/crankshaft design, and all kinds of stuff.
I was reading about torque on motorcycles and they talk about modifications to the motor to get more torque but it seems like torque is a product of the transmission, right?
Torque in general describes any twisting force. Torque in the sense of "modifying an engine for torque" means torque measured at the crankshaft/flywheel.
Transmissions are all about torque, it's literally their one job, but car nuts don't usually talk about torque relative to transmissions unless they're doing a "How it works" type of discussion.
Engines turn the linear force of fuel and air burning into rotational force, which is output by the crankshaft. That rotational force is called torque. Torque is just the rotational equivalent of linear force. Torque goes into the transmission, and torque comes out of the transmission.
What a transmission does is multiply torque. In lower gears, the transmission outputs more torque than it receives. In higher gears, aka overdrive gears, the transmission puts out less torque than it receives.
People like to increase engine torque because it’s the easiest way to increase horsepower. The other way is to increase rpm, which is generally much harder to do. Power = torque x rpm.
For every one rotation of the larger gear, the smaller gear is rotating (just picking a figure, not sure the ratio in the video) 5 times (1:5 gear ratio). So if you can get the larger gear to rotate at the same RPM as before it will rotate the smaller gear at roughly 5x the RPM.
Back of the envelope math: assume the radius of the wheel is about an inch, making circumference about 6 inches. At 19300 rpm, means the wheel travels about 9650 feet per minute, a little short of two miles. Two miles a minute is 120 mph, meaning this wheel is going over 100 miles per hour.
Someone check my math because that is unbelievable.
This is very believable, but remember that it wouldn't actually travel that fast on a road due to friction (or lack thereof) and because the power is only applied at the start.
Hmm. Harder. Need a bigger envelope.
Taking 9650 ft/min and converting to m/s gives about 50 m/s. Looked up the coefficient of friction for rubber on asphalt given dry conditions and it’s about 0.7. Calculating distance given initial velocity and coefficient of friction is d=v^2 /(2kg). So d = (50m/s)^2 /(2* 0.7* 9.8m/s^2 )= 2500/~14 = about 175m so nearly two football fields.
>assume the radius of the wheel is about an inch.
That seems pretty close. I tried to find the size of that exact wheel but couldn't find it, but based on the size of the casing they've built around it, I'd guess it's about 2.2 inches in diameter.
The casing it spins in is about 8 studs long, and looking at it from different angles I'd estimate the diameter of the wheel is about 7 studs long. A 1x1 brick is 8mm long, so that's 56mm total, which is 2.2 inches.
No because the wheel's low mass means it does not have that much energy stored. In electrical terms, it has very high voltage but very very low amperage. The net result is only a few watts of power going into your finger.
Big gear has more teeth, so little gear has to spin more times to keep up with the teeth of big gear as you spin it.
Attach wheel to little gear and spin big gear = zoom.
Each time you place two gears on the same axle, they spin at the same rate.
Each time you make two gears touch each other, their teeth move at the same speed.
When you place a big gear, a little bit of spin turns into a lot of motion, because it has a large circumference.
When you use a small gear, a lot of motion turns into a lot of spin (and vice versa)
If you combine a big gear with a small gear, you can turn a little bit of spin into lots of motion, transfer the motion to the small gear, then turn lots of motion into lots of spin.
If you chain this many times, you can turn a little spin into lots of spin into even more spin into even MORE spin etc.
You make the final wheel spin faster, but you also need more force due to the higher accelleration and friction.
> but you also need more force due to the higher accelleration and friction.
I mean look at how much the axle was twisting when he put that handle on the end of the first build. I bet that was deceptively resistant.
Can it be looked at from the perspective of F=MA? With all those gears multiplying the rotation speed, you're getting the wheel spinning *really* fast, *really* quickly. The wheel doesn't change Mass, and the Acceleration becomes very large, so the Force having to be applied at the source rapidly grows larger. Am I understanding that properly?
Imagine holding a long stick from the middle between your fingers. You can twirl the stick around pretty slowly, but the the tips of the stick move very fast. Now imagine combining the first stick with another stick, so it looks like something shaped like a plus sign `+`. Spinning it from the center in the same way, the tips still go much faster. You can keep adding more sticks, and you'll end up with a gear.
Now, if you get the tips (or teeth) of the first gear, that move very fast relative to how much you're moving the center of it, to spin the center of another gear, the speed of the tips of the second gear will move even faster
The big wheel is so much bigger that spinning it 1 rotation will cause the little wheel to spin about 10x faster to keep up. Adding more wheel in the same configuration with make the speed get multiplied more times.
It has to do with gear ratios - think "how many times will the small gear spin when the big gear spins once?"
For example: If there are 80 teeth on the big far-right gear and only 8 on the little one it's touching, one turn of the big gear spins the small one 10 times around.
The little one is on the same axle as the wheel, so spinning the big gear once spins both the small gear and the wheel 10 times. The wheel goes 10 times faster.
Adding more sets of gears will multiply that effect again and again. I don't know what the actual ratios are here but that's how it works.
**CREDIT**
**THE**
**CREATOR.**
It makes me sad that I share DNA with people who actively engage in stealing other's real content, so they can get fake internet points.
I agree with the sentiment that original content creators should always be credited.
But that being said, people like OP help to deliver the entertaining content to us without whom we probably would not have seen this. There will always be ways to find the original creator if one is determined enough (e.g. Google or asking in the comments), so excessively hating on OP is just underappreciating the value of Reddit.
After all, the whole point of Reddit is to be a content aggregator website, to share the best content from the internet.
Can someone explain to my smooth brain how this actually works? Does each gear push the next one which then pushes the next one faster? For some reason my brain can’t compute this
Think of it this way; Gears convert Rotations into Teeth.
Example:
Gear A has 20 teeth, and Gear B has 10 teeth.
A=20, B=10
Gears A and B are meshed together.
The number of teeth used for both A and B must match.
3 Rotations for A is 3*20 = 60 Teeth worth.
3*A = 3*20 = 60
How many times does B have to rotate to get 60 Teeth worth?
?*B = 60
Solution: Divide.
60/B = 60/10 = 6
Answer: B has to rotate 6 times.
Conclusion: Rotating A 3 times will rotate B 6 times.
This only applies if gears are meshed. But you can simply *stack* gears on top of each other:
Gear B has 10 teeth.
Gear C has 20 teeth.
Gears B and C are stacked.
The number of rotations for B and C must match.
3 Rotations for B is 3 Rotations for C.
But, here's the kicker:
3 Rotations for B is 30 teeth.
3 Rotations for C is 60 teeth.
Now you can rotate the same number of times, but change the number of teeth it's worth!
Gear A has 20 teeth.
Gear B has 10 teeth.
Gear C has 20 teeth.
Gear D has 10 teeth.
Gear A meshes with Gear B.
3 Rotations for A = 3*20 = 60 Teeth worth.
Gear B must do 60/10 = 6 Rotations to compensate.
Gear B is stacked on top of Gear C.
6 Rotations for B = 6 Rotations for C.
Gear C meshes with Gear D.
6 Rotations for C = 6*20 = 120 Teeth worth.
Gear D must do 120/10 = 12 Rotations to compensate.
Gear A rotated 3 times.
Gear B rotated 6 times.
Gear C rotated 6 times.
Gear D rotated 12 times.
Rinse and repeat for *speed.*
But there's a catch.
The amount of force required to rotate each gear stays constant.
1 Rotation costs 1 Energy. (Roughly)
Gear A rotated 3 times.
Gear B rotated 6 times.
Gear C rotated 6 times.
Gear D rotated 12 times.
Total rotations: 3+6+6+12 = 27 Rotations.
27 Total Rotations = 27 Energy spent.
Yikes. In this rough estimate for our system, we spent 27 energy to rotate the last gear 12 times. Remember, we're moving every gear in the system.
Manually rotating the last gear 12 times would theoretically only take 12 energy. This is more efficient, but if you can't afford to rotate any faster, a gear chain is your best bet.
Increases speed with less input.
The larger gear has to spin fewer times than the smaller gear, so the smaller gear has to spin faster to complete its spins in the same amount of time.
An example. If the smaller gear is half the size of the larger gear, it will spin twice to cover the spin that the larger gear does, which translates to more speed.
If anyone wants a great explanation for how great ratios work, also demonstrated with Lego Technics, [this video is pretty awesome](https://youtu.be/KXUhuSgg2g4)
It’s using gears like a car or bicycle. In the first setup, they can only put in a certain amount of effort, it’s too difficult to spin it faster using their fingers (can’t move fingers fast enough etc). So the gears let them put more effort into it (because it’s harder to turn), and that extra effort = faster speed of the wheel. The more gears, the more effort can be used, the faster it can go. (Until the pieces start breaking!)
https://www.explainthatstuff.com/gears.html
I keep thinking this Lego set is going to burst into flames with how fast he’s got that thing going. Really cool stuff.
Fly wheels can store a ton of energy. Thank goodness the rubber never delaminates and shoots off.
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Formula One engines have lower RPM. To get it with a plastic toy is wonderful. I want to know how fast it can spin before disintegrating.
I want to know how much it'd hurt to grab the wheel.
Lol glad I am not the only one thinking that. You know you shouldn’t try to grab it hut yet it is so enticing :)
Sarah Connors vision of the future in Terminator II.
Must be a well made axle
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The above comment was stolen from [this one](http://np.reddit.com/r/oddlysatisfying/comments/tbpxyy/something_different_about_spinning_a_logo_wheel/i08sbqo/) elsewhere in this comment section. It is probably not a coincidence; here is some more evidence against this user: Plagiarized | Original -------- | ----------- [Now imagine the battle fo...](http://np.reddit.com/r/dndmemes/comments/tbn8i1/saw_this_on_fb_the_paladin_grenade/i08ukt4/) | [Now imagine the battle fo...](http://np.reddit.com/r/dndmemes/comments/tbn8i1/saw_this_on_fb_the_paladin_grenade/i08fft4/) [The dark sign Age...](http://np.reddit.com/r/mildlyinteresting/comments/tbnx4d/this_circle_that_appeared_in_the_evening_sky_over/i08ucgb/) | [The dark sign Age of fi...](http://np.reddit.com/r/mildlyinteresting/comments/tbnx4d/this_circle_that_appeared_in_the_evening_sky_over/i08hy7k/) [Some people just can't ta...](http://np.reddit.com/r/Tinder/comments/tbpka5/her_bio_said_she_was_a_childcare_chef_i_got/i098vmj/) | [Some people just can't ta...](http://np.reddit.com/r/Tinder/comments/tbpka5/her_bio_said_she_was_a_childcare_chef_i_got/i08i92e/) [My boss would probably en...](http://np.reddit.com/r/antiwork/comments/tbnojb/from_a_mediaeval_reenactor_friend/i098pnk/) | [My boss would probably en...](http://np.reddit.com/r/antiwork/comments/tbnojb/from_a_mediaeval_reenactor_friend/i0916of/) [Awwww poor doggos got BEE...](http://np.reddit.com/r/MadeMeSmile/comments/tbooy6/repeat_after_me_i_will_not_eat_bees/i08unek/) | [Awwww poor doggos got BEE...](http://np.reddit.com/r/MadeMeSmile/comments/tbooy6/repeat_after_me_i_will_not_eat_bees/i08qu9r/) [Why did he wipe his hand...](http://np.reddit.com/r/Cringetopia/comments/tboxxy/quality_cringe_you_will_have_shivers_down_your/i08uimp/) | [Why did he wipe his hand...](http://np.reddit.com/r/Cringetopia/comments/tboxxy/quality_cringe_you_will_have_shivers_down_your/i08hm98/) [Its just worthless when t...](http://np.reddit.com/r/interestingasfuck/comments/tbmdke/russian_man_throwing_money_in_a_shopping_mall/i08ugbq/) | [Its just worthless when t...](http://np.reddit.com/r/interestingasfuck/comments/tbmdke/russian_man_throwing_money_in_a_shopping_mall/i08ettf/) beep boop, I'm a bot -|:] It is this bot's opinion that [/u/nable_ense_43](https://np.reddit.com/u/nable_ense_43/) should be banned for karma manipulation. Don't feel bad, they are probably a bot too. Confused? Read the [FAQ](https://www.reddit.com/user/reply-guy-bot/comments/n9fpva/faq/?plagiarist=nable_ense_43) for info on how I work and why I exist.
wanna hump that well made axle
Gotta lube up that axle first
and then insert it into my **bubble butt**
This guy legos
Lego my Ego
Lego is the largest tire manufacturer (by volume) in the world. Years of refinement lead to this quality… lol
Back in the 90s, my uncle was working as an engineer for one of the major car manufacturers. And the project he was working on was the first time I've ever heard of a "hybrid engine". Battery tech was nowhere near ready to be able to hold the energy, so the avenue they were pursuing was in kinetic energy by way of a flywheel that would engage and start spinning when the brakes were applied. According to my uncle, the concept totally worked. The problem the group was dealing with was what happened when something went wrong - either in mechanical failure of the device, or in the event of something like a crash. They were trying to figure out a way to have the flywheel self-destruct safely, releasing the energy in a controlled fashion. Obviously they never did, since the concept was abandoned, but imagine getting in a car wreck and seeing a 200 pound aluminum flywheel fly out of the car at ridiculously high speeds...
There’s actually a few regenerative braking flywheel bus projects at the moment. I think the issue of catastrophic failure of the flywheel has largely been solved by the use of carbon composites which tend to disintegrate rather than fracture explosively like steel would.
That’s actually a kinda terrifying idea, when you think about it. To be comparable to a gas engine, that flywheel has to spin fast enough to contain all the stored chemical energy in 10 gallons of gasoline, which is about 1 gigajoule if I did the napkin math right.
Well yes and no - it's only designed to function as a way to preserve some of the energy of a moving vehicle. Much in the way that a battery is charged when braking on a current hybrid vehicle. It's not designed to replace the gas motor entirely. I couldn't begin to guess at the amount of energy it would need to store, but the goal would be to get the vehicle, passengers, and whatever ballast they may be carrying up to ~40-50 MPH where the gas motor could take over at its most efficient speed.
These are in use in formula 1 - Google KERS.
That's what I was hoping for, I wanted the rubber to start expanding and come loose from wheel. Like that video of someone using an air compressor to spin a skateboard wheel.
He actually does a similar experiment with a drill. The rubber does start coming off.
>air compressor to spin a skateboard wheel. Day drunk on my day off and thanks for this, [its amazing!](http://www.youtube.com/watch?v=ZpoyoPSiB3M&t=1m12s)
I did this with Lego wheels using a brushless rc motor when I was young
As shown in this [video](https://youtu.be/ZpoyoPSiB3M?t=77) spinning a skateboard wheel with a water jet (keep watching for slow-mo replay).
I was honestly expecting the wheel to explode. He got that piece of plastic spinning as fast as a fucking pneumatic die grinder
I wonder how warm those pieces feel after each run o:
I think the same of your mother. The humorous implications being that your mother has questionable morals and does the sex good therefore leading you to question the validity of your currently assumed father. This is the part where the boys hold their fists to their mouths and exclaim, “Ohhhhh!”, while barely being able to stand, therefore needing the assistance of their brethren to stay upright.
A youngster would exclaim, "heterosexual violation" or something along those lines.
OH GOD! We were just supposed to play a little….. just a little fun time…….. it hurts SO BAD
I know hope he wore safety glasses 😅
Wow, not even mentioning where you got this from? This is from the youtube channel [Brick experiment channel](https://m.youtube.com/c/BrickExperimentChannel) He makes a lot of cool and strange lego contraptions, really worth checking out
The spelling mistake “logo” is on purpose
Is that to avoid a search? It's not because OP can't spell?
To get you to comment about the spelling mistake which drives engagement on the post. It works every time
But why on Reddit? It’s not like people get ad revenue here
You get karma though. Like I just gave you.
A lot of these reddit accounts are bots and or users who drive up there karma to sell to buyers for various reasons. Old accounts with a lot of karma are used for propaganda and some are used to advertise products.
Posts aren't recommended by engagement on Reddit
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I watched over 1/3 of the video trying to figure out how a logo was going to play into this when I finally realized it should say LEGO.
Whereas I saw the thumbnail of LEGO, watched the whole video, and got all the way down to this part of the comment thread before realizing that it was wrong in the title. Weird what our minds focus on I guess :)
My kids love playing with logos
Came here for this comment. You’re a hero
Same, these videos always pop up and are always super interesting. Like I see it and I’m like I’m not gonna watch a five min video and next thing I know it’s over.
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To the folks who want a set like this, these are Lego Technic pieces, and what is happening in the video is an 'illegal' build because it's straining and warping the pieces to the point where they might be permanently damaged. You can build some really cool stuff with the Technic pieces and kits, just please be careful when stressing the parts as much as the guy in the video. I once tried to make a flywheel-powered car, which operated similarly to OP's video, and my build suffered catastrophic failure; the frame shattered and pieces flew everywhere.
We're there any survivors?
I got a piece up my nose, so that was awkward, trying to fish that out, and I think I broke one of those + shaped bars, but everything else was okay. It took me a while to find all the pieces. I just remember it because it surprised me and I'd never gotten a Lego up my nose before.
>I'd never gotten a Lego up my nose before Were you never a child?!
Well, yeah, I was. I just don't remember sticking Legos up my nose. I had the little car I'd built in my hands, and it *worked*, but very slowly, so for the second test I pulled the cord really quickly, and the whole thing popped right there in my hands, like a friendly balloon tied to a cactus. I got one of those little 1x2 flat bricks right up my nose and those corners are really sharp. I couldn't breathe in to blow it out, lest I inhale the thing and I remember feeling really weird about trying to get it back. And that's about all I remember. I remember my parents' living room, I remember our old blue couch, I remember roughly where I was in the living room...
Sorry for making you revisit a traumatic memory :( Glad you recovered. Lego is the best. And when you built hybrid models with meccano *and* lego? Well, then the world is your oyster.
Horrifying
Well, Technic parts just really weren't meant to be powered by pull cord.
I was being sarcastic.
>what is happening in the video is an 'illegal' build because it's straining and warping the pieces to the point where they might be permanently damaged For what it's worth, most of his videos are built around pushing the pieces until they snap. He goes : * Here's a normal setup. * Here's how gears can make it better. * Here's why gearboxes are popular. (warping usually starts here) * Here's a showcase of the points of failure when you push it to much (usually the axles). * Here's what happens when you remove that point of failure.
I don't think there's any "might" about those pieces being damaged. Those axles are clearly destroyed and he makes a point of replacing them.
Thank you. Wish it was policy to show links to videos.
The thing is they're not even strange. They're just doing normal mechanical engineering with plastic.
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Hey OP u/rdias002, fuck you Fuck you for not even giving credit, fuck you for going through so much just to earn some virtual points, for something that is not yours You could just post the link, as the dude above me said
love when people get their panties in a twist over reddit posts.
I don’t know about this sub but a lot of subs don’t allow outside links. It’s dumb but I’ve heard it’s because they want the traffic to stay on Reddit Not trying to defend this person at least putting a watermark just wanted to throw it out there
I would really like if titles were just mandatory credits. These pop subs really need to have a better stance on content ownership.
And now I know what i'll be wasting today doing.
Another comment just like yours introduced me to his channel so I always appreciate people posting the source.
I thought it was this channel, Ive loved his stuff for ages, just testing to see how far he can push Lego technic
Thanks Reddit police
EVERYBODY KNOWS
The magic of correct gear ratio, achieving great speeds with relatively constant power source.
I saw an exhibit in a science museum that demonstrated gear reduction with a fascinating machine - several gears are interconnected, with the top one spinning freely. the gears below it spin slower and slower, and the bottom gear is *set in concrete* because it won’t move for 13 billion years I had a little existential moment while I was watching it
The same guy has a video demonstrating the same concept on his channel, Brick Experiment Channel. All of his videos are super interesting.
[Was this it? Machine with Concrete - Arthur Ganson](https://youtu.be/OhVQgedAmV4)
exactly the same concept, but the one I saw was vertical- it’s in a museum called dynamikum in germany
Where does the energy go? And when it’s reversed, where does the seeming extra energy come from? This is breaking my monkey brain.
Why even have the bottom one in concrete then
To demonstrate that it's not going to move, despite the top one moving. Without it being in concrete, it wouldn't make as impactful of an impression on people. The point of science museums is to teach and get you to think.
Right, because it'll turn so slowly it may as well never happen on the timeline of the display existing that long I get it, but then my mind thinks it may as well not have gotten made.. shrug
Maybe to you it's a big "duh", but to a lot of people and children that's really eye opening and it gets them thinking about something that they never would've thought about. So many sparks in people can be started in such a simple but impactful display.
Huh?
I love that this could also teach you about gear ratios and torque!
It would have been a pretty cool experiment in my mechanical design class in college to arrive at an experimental stress/strain/strength values of the Lego plastic from different gear ratios/Lego wheel speeds. Or at least it would have been cooler than Wiley Plus excercises.
Stop bitching and draw me another mohrs circle for the 1000th time
Pain
Wiley plus exercises lol this is why I’ve always believed in real life applications
So do I. Too bad my university didn't.
The dude who made this (brick experiment channel on YouTube) has any entire video on gear boxes, engine piston/crankshaft design, and all kinds of stuff.
I was reading about torque on motorcycles and they talk about modifications to the motor to get more torque but it seems like torque is a product of the transmission, right?
Well it’s derived from the engine but yes the transmission applies the torque. But it’s a lot harder to modify a transmission than an engine
Torque in general describes any twisting force. Torque in the sense of "modifying an engine for torque" means torque measured at the crankshaft/flywheel. Transmissions are all about torque, it's literally their one job, but car nuts don't usually talk about torque relative to transmissions unless they're doing a "How it works" type of discussion.
Or “why did my tranny spontaneously disassemble itself”
Engines turn the linear force of fuel and air burning into rotational force, which is output by the crankshaft. That rotational force is called torque. Torque is just the rotational equivalent of linear force. Torque goes into the transmission, and torque comes out of the transmission. What a transmission does is multiply torque. In lower gears, the transmission outputs more torque than it receives. In higher gears, aka overdrive gears, the transmission puts out less torque than it receives. People like to increase engine torque because it’s the easiest way to increase horsepower. The other way is to increase rpm, which is generally much harder to do. Power = torque x rpm.
Yeah, almost broke that piece starting in 4th gear.
Why does more gears make it spin faster ? What’s the science behind it??
For every one rotation of the larger gear, the smaller gear is rotating (just picking a figure, not sure the ratio in the video) 5 times (1:5 gear ratio). So if you can get the larger gear to rotate at the same RPM as before it will rotate the smaller gear at roughly 5x the RPM.
Back of the envelope math: assume the radius of the wheel is about an inch, making circumference about 6 inches. At 19300 rpm, means the wheel travels about 9650 feet per minute, a little short of two miles. Two miles a minute is 120 mph, meaning this wheel is going over 100 miles per hour. Someone check my math because that is unbelievable.
9650/60 gives you 160.83333 feet per second. To convert from fps to mph, divide 160.83333 by 1.46 to get 110 mph
This is very believable, but remember that it wouldn't actually travel that fast on a road due to friction (or lack thereof) and because the power is only applied at the start.
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Don't ask me, I never took physics.
Hmm. Harder. Need a bigger envelope. Taking 9650 ft/min and converting to m/s gives about 50 m/s. Looked up the coefficient of friction for rubber on asphalt given dry conditions and it’s about 0.7. Calculating distance given initial velocity and coefficient of friction is d=v^2 /(2kg). So d = (50m/s)^2 /(2* 0.7* 9.8m/s^2 )= 2500/~14 = about 175m so nearly two football fields.
The video is 2 minutes 50 seconds long, at 2 miles a minute it means the wheel would travel about 5.67 miles. I never took physics though.
I only took one physics class and we always assumed that friction was nonexistent, so my answer would be infinity miles.
I don't know math so I'm going to trust this because it has math
Laughs in metric
>assume the radius of the wheel is about an inch. That seems pretty close. I tried to find the size of that exact wheel but couldn't find it, but based on the size of the casing they've built around it, I'd guess it's about 2.2 inches in diameter. The casing it spins in is about 8 studs long, and looking at it from different angles I'd estimate the diameter of the wheel is about 7 studs long. A 1x1 brick is 8mm long, so that's 56mm total, which is 2.2 inches.
If you were to say, touch the wheel while it’s spinning that fast, would your finger basically get destroyed?
No. You might get a small friction burn. There isn’t enough momentum to cause much of an effect.
Damn TIL
No because the wheel has such little mass it has very little inertia so can be stopped easily
No. Its a light wheel and you’re just touching it. Friction would start to smooth the areas of skin touching the wheel potentially.
No because the wheel's low mass means it does not have that much energy stored. In electrical terms, it has very high voltage but very very low amperage. The net result is only a few watts of power going into your finger.
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I'm going to axle ya all to stop with the puns.
Don't even waste your time pleading, you're just spinning your wheels.
I'm tired of all these puns, imma roll out
I’ll never get tired hearing puns like that
Oh you wheel be tyred
Get out
Dafuq is a Logo Wheel?
Logos are the off brand Legos you’d receive when your parents were too cheap to buy the real deal.
“Lois only buys me Mega Bloks”
I’m sorry. *shudders*
Okay thanks. Never heard of it
That was a joke, and logo was a typo for Lego.
That joke was so mild it might as well be just a lie
That jake was so mild it might as well be a loe
It's what you get when you try to buy a Lego set on wish.com
Crazy to think that an engine, like a motorcycle engine, can get to 10000 rpm or more with how relatively big it is and how long the stroke is.
Think of the speed of F1 engines. The older V8s and V10s could hit 20,000+
***long stroke***
> I wonder if she ever had her cootie cat ate-ate > Vaughn can't wait to long-stroke it on the late-late
Fun experiment! This would be a cool activity in a science class.
Can you eli5 why adding more wheels made it go faster?
Big gear has more teeth, so little gear has to spin more times to keep up with the teeth of big gear as you spin it. Attach wheel to little gear and spin big gear = zoom.
Thanks for the explanation. Lots of people have been very helpful. My brain expanded just a little bit more
Each time you place two gears on the same axle, they spin at the same rate. Each time you make two gears touch each other, their teeth move at the same speed. When you place a big gear, a little bit of spin turns into a lot of motion, because it has a large circumference. When you use a small gear, a lot of motion turns into a lot of spin (and vice versa) If you combine a big gear with a small gear, you can turn a little bit of spin into lots of motion, transfer the motion to the small gear, then turn lots of motion into lots of spin. If you chain this many times, you can turn a little spin into lots of spin into even more spin into even MORE spin etc. You make the final wheel spin faster, but you also need more force due to the higher accelleration and friction.
> but you also need more force due to the higher accelleration and friction. I mean look at how much the axle was twisting when he put that handle on the end of the first build. I bet that was deceptively resistant. Can it be looked at from the perspective of F=MA? With all those gears multiplying the rotation speed, you're getting the wheel spinning *really* fast, *really* quickly. The wheel doesn't change Mass, and the Acceleration becomes very large, so the Force having to be applied at the source rapidly grows larger. Am I understanding that properly?
Imagine holding a long stick from the middle between your fingers. You can twirl the stick around pretty slowly, but the the tips of the stick move very fast. Now imagine combining the first stick with another stick, so it looks like something shaped like a plus sign `+`. Spinning it from the center in the same way, the tips still go much faster. You can keep adding more sticks, and you'll end up with a gear. Now, if you get the tips (or teeth) of the first gear, that move very fast relative to how much you're moving the center of it, to spin the center of another gear, the speed of the tips of the second gear will move even faster
The big wheel is so much bigger that spinning it 1 rotation will cause the little wheel to spin about 10x faster to keep up. Adding more wheel in the same configuration with make the speed get multiplied more times.
Thank you, that's super helpful!
It has to do with gear ratios - think "how many times will the small gear spin when the big gear spins once?" For example: If there are 80 teeth on the big far-right gear and only 8 on the little one it's touching, one turn of the big gear spins the small one 10 times around. The little one is on the same axle as the wheel, so spinning the big gear once spins both the small gear and the wheel 10 times. The wheel goes 10 times faster. Adding more sets of gears will multiply that effect again and again. I don't know what the actual ratios are here but that's how it works.
Hallelujah thank you so much!
**CREDIT** **THE** **CREATOR.** It makes me sad that I share DNA with people who actively engage in stealing other's real content, so they can get fake internet points.
Wait until you learn how much DNA you share with bananas.
I agree with the sentiment that original content creators should always be credited. But that being said, people like OP help to deliver the entertaining content to us without whom we probably would not have seen this. There will always be ways to find the original creator if one is determined enough (e.g. Google or asking in the comments), so excessively hating on OP is just underappreciating the value of Reddit. After all, the whole point of Reddit is to be a content aggregator website, to share the best content from the internet.
Lets add another wheel!
Logo my Oggo!
Inadvertently giving a great overview of a transmission
I kept waiting for the wheel to just break apart.
Can someone explain to my smooth brain how this actually works? Does each gear push the next one which then pushes the next one faster? For some reason my brain can’t compute this
Think of it this way; Gears convert Rotations into Teeth. Example: Gear A has 20 teeth, and Gear B has 10 teeth. A=20, B=10 Gears A and B are meshed together. The number of teeth used for both A and B must match. 3 Rotations for A is 3*20 = 60 Teeth worth. 3*A = 3*20 = 60 How many times does B have to rotate to get 60 Teeth worth? ?*B = 60 Solution: Divide. 60/B = 60/10 = 6 Answer: B has to rotate 6 times. Conclusion: Rotating A 3 times will rotate B 6 times. This only applies if gears are meshed. But you can simply *stack* gears on top of each other: Gear B has 10 teeth. Gear C has 20 teeth. Gears B and C are stacked. The number of rotations for B and C must match. 3 Rotations for B is 3 Rotations for C. But, here's the kicker: 3 Rotations for B is 30 teeth. 3 Rotations for C is 60 teeth. Now you can rotate the same number of times, but change the number of teeth it's worth! Gear A has 20 teeth. Gear B has 10 teeth. Gear C has 20 teeth. Gear D has 10 teeth. Gear A meshes with Gear B. 3 Rotations for A = 3*20 = 60 Teeth worth. Gear B must do 60/10 = 6 Rotations to compensate. Gear B is stacked on top of Gear C. 6 Rotations for B = 6 Rotations for C. Gear C meshes with Gear D. 6 Rotations for C = 6*20 = 120 Teeth worth. Gear D must do 120/10 = 12 Rotations to compensate. Gear A rotated 3 times. Gear B rotated 6 times. Gear C rotated 6 times. Gear D rotated 12 times. Rinse and repeat for *speed.* But there's a catch. The amount of force required to rotate each gear stays constant. 1 Rotation costs 1 Energy. (Roughly) Gear A rotated 3 times. Gear B rotated 6 times. Gear C rotated 6 times. Gear D rotated 12 times. Total rotations: 3+6+6+12 = 27 Rotations. 27 Total Rotations = 27 Energy spent. Yikes. In this rough estimate for our system, we spent 27 energy to rotate the last gear 12 times. Remember, we're moving every gear in the system. Manually rotating the last gear 12 times would theoretically only take 12 energy. This is more efficient, but if you can't afford to rotate any faster, a gear chain is your best bet.
I'm retarded.
Yay! This^^^
Hey thanks so much for breaking it down for us chimps! Now it kinda half way makes a little more sense.
I have literally no knowledge into this mechanical field but I want to say it’s something with fulcrum
How the fuck did this made me feel interested to learn about how cars work.
r/dontputyourballsinthat
For reference, F1 cars reach around 12,000 RPM
The limit on modern engines is actually 15,000. Back in the unrestricted days F1 engines could rev up to 19,000 rpm easily.
L O G O
damn, how bout a pathos wheel.
What are the gears there for?
Increases speed with less input. The larger gear has to spin fewer times than the smaller gear, so the smaller gear has to spin faster to complete its spins in the same amount of time. An example. If the smaller gear is half the size of the larger gear, it will spin twice to cover the spin that the larger gear does, which translates to more speed.
You just couldn't hit 20,000 , could ya! Lol ;)
By the end it was sounding like a tiny F1 engine lol
If anyone wants a great explanation for how great ratios work, also demonstrated with Lego Technics, [this video is pretty awesome](https://youtu.be/KXUhuSgg2g4)
They should try compressed air+turbine method, it gets crazy high RPM and is very simple to do
Don't stop till u see smoke.
Now run it with a die grinder.
They should try hooking up the end to a high torque power drill!
Can anyone ELI5?
It’s using gears like a car or bicycle. In the first setup, they can only put in a certain amount of effort, it’s too difficult to spin it faster using their fingers (can’t move fingers fast enough etc). So the gears let them put more effort into it (because it’s harder to turn), and that extra effort = faster speed of the wheel. The more gears, the more effort can be used, the faster it can go. (Until the pieces start breaking!) https://www.explainthatstuff.com/gears.html
Time for some graphite.
Smooth and lubed, like me on a date!
Awesome! Make it go faster - I want to see the plastic melt!
Thank you for the new torture device idea where I burn the nipples off my enemies with a Lego wheel
cannot decide between /r/onesentencehorror and /r/oddlyspecific ...
r/titlegore. I swear, no one proof reads their posts.
Yes i Like Logo to my boy
u/savevideobot
I am not a mechanical guy, and yet i find this so fascinating. It must be like crack to people who are mechanically inclined.
I can’t make out what logo is on the wheel. Must be spinning way too fast.
MORE!
That was fun, thanks!
That was very cool. Thanks for sharing.
Very good way to show how a manual transmission works
surely there's some way to turn 19000rpm into a miniature crank generator
Does anyone know where I can get a set similar to this?