40 Satisfying MECHANISMS in LEGO…

This is one Lego motor. As you can see, it sounds very weak. I can literally stop it with my hand. And this is eight Lego motors. And they sound like this. Today, we're going to take all these motors and battery boxes and combine them to make the world's strongest Lego motor. And then we're going to run a bunch of experiments and tests with it to see how strong it actually is. I have no idea how we're going to do this. So we need to create a circular shape. And then we're going to connect gears to each one of these. And each one of those gears will connect to a central gear so that all the power from each motor will be converted into one central axle. It'll be essentially a giant version of one of these. So let's test something. All right, say we do this. And we put two of these axles in here. And then we connect those to this gear right here. In order to connect those, all we have to do is put a gear right here. And now that spins. And now we need to build three more of these to put on the sides. And so we'll have a square of motors that are running with a gear on the inside. Perfect. OK, now we have four. OK, now that is perfect. And then drop that in, drop that in, drop that in. I'm kind of scared this is going to be, it's probably going to be just a little bit dangerous when it's running at full power. We need to put a couple gears in here and then attach a central gear. I'm shaking. I'm a little freaked out. Don't do this at home, by the way. And again, we're not trying to increase speed. We're trying to increase torque. Because we can do whatever we want with speed if we use a gear ratio on the other end. Right now we're just trying to fix the motor part. So all right, we got those locked together. We got all the gears in there. Those aren't going anywhere. On the inside of this, let's grab a piece. These tables are annoying. Put that right there. And that'll give us a little bit something to attach stuff to on the inside. Let's put one on each side here. At some point, I'm going to put on eye protection because this thing is going to get dangerous. And by dangerous, I mean dangerously powerful. And dangerous gears spinning fast, that could pop off and hit me in the eye. Now, main gear goes right here. So we've got to figure out what size of gear we can put around that. So this one, if they're all rotating this way, I think that's going to work, guys. Oh my gosh, bro. I'm so scared. This is not a good idea. Let's see. Moment of truth. Eye protection. OK, here we go. Yo, it actually works. Let's go. Wait, how strong is that? Let's show this LEGO tire right here. And if I can grab the tire, then it's not that strong. OK, so we've got to reinforce it quite a bit before we can actually see if this is the strongest LEGO motor. This is promising, though. OK, so the little bushing came off of this. So we're going to replace this with a longer one. And then we're going to put a bunch of these yellow things on because the more of these you put on, the harder it becomes for this thing to move around. OK, throw that right there. Too much power is going through. Yeah, three just turned off. Yo, I just realized we just completely twisted this axle. Look at that. That is insane. The question is, how do we get it to be more powerful? Because we have eight motors running in it. But something about how we arrange the gears, I don't even know. As with every great project, we need to figure out some issues. All right, I'm about to call my friend Marcel from Astonishing Studios. He's an engineer, so I'm hoping he can help us solve our motor issue. OK, so I bought eight LEGO motors. I'm trying to build the strongest LEGO motor, but I'm running into a problem. I'm trying to figure out how I can maximize torque with the gear setup. The way you maximize torque is by trying to get the fewest rotations at the output for as many rotations as possible at the input, right? So say if you put like 10 rotations into a system and it causes one rotation at the output, you're getting like 10 times the torque there in theory. So what I need to do is make these gears little gears and then this a big gear to a big gear. Am I correct? Essentially. Nice. OK, cool. I'll work on that. Thank you. Guys, go check out Marcel from Astonishing Studios. Link in the description. He makes some sick food automation machines, so check him out. The next step now is to replace all the gears that were attached to the motors with smaller ones and hope that works out. OK, so we just replaced those gears, like Marcel said we should, with these smaller gears. I'm thinking this is going to be a lot more powerful. We're most likely going to have to reinforce all this, but here we go. No. We just like busted the inside of this wheel. I mean, what could I really expect? As an engineer, it works. OK, let's reinforce this again, and then we're going to attach one battery box to each side, I think. We really don't want to strip any of these gears, but that's what it's coming down to, essentially, is just the power of the gear. So yeah, let's reinforce again. OK, so we got four cables coming out. It's quite a bit sturdier than it was, quite a bit larger. Now what we're going to do is we're going to reinforce these edges right here, because these things are going to want to pull apart. So the way we're going to do that is like this. All right, now it is very re-sturdified. That's not even a word. Now we just got to attach these four battery boxes to the motors. Yo, I hear something cracking. I am thinking this is one of the strongest LEGO motors in existence, if not the strongest LEGO motor. So let's put this thing to the test and get some things that are hard to do to see if this thing can do it. You can see I also added this big button on this side, and that allows us to turn on each of these battery boxes independently, like this, or all at the same time, like this. I think this thing's going to work really well. I reinforced the front. Let's go do some tests to see if this thing actually works. All right, the first test we're going to do with this comes from LEGO Joe. They say see if it can lift 100 pounds. So that's what we're going to do. This box is off to here, but there's a hole in it right here, so the plan is to have this thing right here, and then a box on this side, and a pulley to see if this thing can actually lift. So we got to build that up real quick, and then we can test it. All right, guys, here we go. Let's see if this can actually pick this up. We're going to turn it on. First test, 5 pounds. OK, 5 pounds successful. Let's go. This is coming undone. Oh, I see. We got to fix this up here, but it can lift 5 pounds to start. Test number two, 10 pounds. Here we go. We're good for 10. Oh, gosh. Oh, it's bending so hard right now. OK, guys, that time it lifted up 10 pounds. Let's fix this, and then try 20 pounds. 20 pounds is heavy stuff, you guys. I don't think this is going to work. I am definitely glad I'm wearing eye protection, though. OK, here we go. 20 pounds in 3, 2, 1. We totally did it. Let's go. I think the notch just came off. Are you kidding me? That was it? I'd say success, 20 pounds. It lifted it like this far. This is pretty strong. All right, so in conclusion, can it lift 100 pounds? I'm going to say no, but it can lift 20 pounds, and that's a lot of weight. That's pretty insane. It weighs 2 pounds and 9 ounces for this entire thing. That's actually pretty heavy. The next test we're going to run is to see how long of a gear train we can make by gearing up so that it'll go faster and faster before this thing just can't turn the gear anymore. It's already spinning a little faster. Look at that. Now we should add more. All right, here's three. As you can see, it works with three gears. Let's try more. Getting harder and harder. Here we go. Dang, that is spinning. I don't know how many RPM that is, but eventually I'll do the math and it'll be right here. Wow, that is also very loud. Look at that. It's going to fly up and hit me. I wonder if it's still spinning. All right, let's see if we can get a couple more of this. OK, at this point, this one over here will not even turn. We've got to hold this motor. It's really hard to determine how strong this is. Problem is that the axle is just coming out of this little hole. This motor isn't stopping. I just can't get it to hook onto that. No matter what we do to it, it's just bending the axle. The motor is more powerful. I can't figure out a way to stop this motor. With all four segments running, I can't stop it. We just bent the axle. This motor is unstoppable, you guys. These things just broke. I think if we get more motors in each of these, we could literally make a rideable Lego car. All we need is metal axles. It has enough torque, I think, to run like a car you could ride on. I think there's only one thing left to do with this, you guys. Guys, make sure you click this video over here. That's a video that YouTube recommends specifically for you. Comment down below if you want to see something rideable built with these. I'll talk to you next, Brick Science. What am I doing?