You can see part 1 of this build here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-rAm-lMeZ-uE.html Lots of people saying @vicesat did this first. So it turns out he made a bike before me in 2022, well, I've been making XXL Lego inspired vehicles since 2020 and giant scale since 2017. The whole point of these projects is to inspire new builds, and that's exactly what these builds have done✌
If Lego still had balls, they could totally turn this into an attraction at their amusement parks. Just imagine like 20 of those bikes racing down a go-kart type track.
I never actually went, but they used to have giant lego kids cars in a "driving school" back in the day. I'm guessing they were just fibre glass shells over conventional chassis though, not brick built.
Matt this is brilliant, the thing I especially love is the components squeaking when you ride. Which is exactly how the bricks sounds when building models.
My preferred Lego mode of transportation is SPACESHIP!!! But maybe your next build could be a powered LEGO 40220 Creator Double Decker London Bus? You could sit on the roof to ride it! :D Maybe make it remote controlled too? -with lights and a destination sign that switches text? A working LEGO City 60385 Construction Digger would be a fun one as well.
Licensing issues, Lego could sue, but there are probably justifiably ways to defend your product. (If mega blocks can exist then this also should be able to exist)
Most of these budget controllers packaged in kits like yours, have a set of wires (usually white or grey) that when plugged in, reverse the motor direction permanently. They call these the self-learn wires, or "intelligent recognition". It makes installation a breeze. With the controller off and the wheel off the ground, connect them together, turn the controller on & watch the direction of rotation, if correct disconnect them, and cycle the power to the controller. Presto! You might have already learned this since making the video, and you might not see this comment, but I wanted to comment in case somebody is having the same issue. Cheers and happy building.
I’ve been obsessed all day with how this amazing "creature" looks. As a huge Lego fan and someone who loves monkey bikes, this project is a dream come true for me. Is there any chance you might commercialize a version based on this prototype in the future? Or perhaps offer the 3D modeling files and a construction manual for purchase? Even the color combination is perfect. Congratulations on this fantastic piece of design!
Oh thanks 🙏 yeah the color combo goes back to my 80s Lego technic roots! I mention this in part 1. I have a plan to release the files and BOM, however I’m slightly nervous someone gonna hold one and hurt themselves, it’s not a structure like a bike, it will break if not carefully used 😬
This was absolutely fantastic! I've been at home sick for several weeks, only lying in bed and watching RU-vid. This was possibly the most fun video I've seen during this time. (And just pointing out, with this front end geometry, moving the wheel forward is the wrong direction to fix the handling... 🙂As said in the video, trail is the distance from the contact patch to where a line through the steering head (not through the forks as shown in the illustration by the way) meets the ground. The contact patch is behind the point of rotation, and trail can be seen as a "lever" through where forces are transferred in steering. This bike now has a negative trail - the contact patch is in front of the steering axis. You normally set the correct amount of trail for a given rake/steering head angle by dimensioning the fork yokes and changing the fork offset. The yokes put the wheel at the correct position relative to the steering axis to achieve the amount of trail you want to have. In this case the offset should be smaller - the forks and wheel should be pulled back, the fork yokes should be straighter and not so triangular. Functionally you could just as well move the wheel axle on a mount behind the forks, but that would look weird. What you often see on some forks, that the wheel axle is in front of the forks, is not so much to fix the trail measurement, but more so due to the construction of the fork itself. Sometimes the axle needs to be in front of the fork, but that is then corrected by the yokes and the offset. On a traditional bicycle where there are no yokes, you achieve the correct trail with the lower fork bends. Now - this Lego bike is a scaled up model and absolutely perfect as it is, it shouldn't be changed in any way! But normally negative trail is considered upright dangerous, so it's something to be aware of. It's possibly the most important single aspect of bike steering geometry.)
Love the video! High School Engineering Technology teacher here, looking forward to purchasing the STLs when they are released so that my classes can build this and learn from it!
This looks like a blast. When I saw the battery in the short I didn't think it was a waterbottle, but a fire extinguisher! I imagine a classic Lego train of some sort scaled up to one of those rideable garden railway gauges would be a neat project.
@MattDenton thanks for sharing the video. I’d be happy to test this build out for you before you release the files. I’m in California, I’m curious how it goes sourcing some of the parts. Should be doable, anyways congrats on this build. Lots of options for customization through color, lights etc..
Dude that e-bike kit is the mvp, brings your creation to life and looks easy to assemble (except for getting the motor phases well connected). Now I want to electrify my bicycle
@@MattDenton that'll probably look even better. Om not sure if the canister was an actual piece. I do remember something like it but can't find it online. I would like to see a Lego Maxi Figure helmet to go with the bike and it's rider though :)
I don't think there was a single piece, but you could maybe make it up from cylindrical elements to give the right stripes. Though 1 stud might be too small, and 2 too big.
What an absolutely fantastic project! Love how much you committed to replicating the original model and found ways to reinforce the pieces as needed. Amazing work!
Matt, you're explanation about rake angle A and trail B is correct but the sketch on the CAD model of the bike is wrong: the rotation axis (and not suspension axis) is more to the back making the trail almost zero to none. To solve this, offsetting the wheel would help, but you need to offset it to the back and not the front. An easy way to remember this is to think of the front wheel as a caster wheel on a trolley. Relevant timestamp: 18:12
Ok interesting, I can see how I’ve missed the rotating axis and yes trail is near zero.. but can’t see how offsetting it backwards would help. Most pedal bikes have a forward offset. (I’ll update this in another video, and description) thanks for pointing it out
It's because of the small rake angle of the lego bike that it's counterintuitive to move it backwards. But if you look at it from the current rotation axis of the steering column, the wheel axis already has a big offset to the front. I think, the most subtle way of improving the trail is a combination of increasing the rake angle and by cheating in the top parts of the steering column to reduce the forward offset but that can have a negative impact on left to right steering angle.
+1 to KlaasDeSmedt, he's absolutely correct here. Unfortunately though there's no quick fix to this issue without a reverse-offset axle mount or a significant redesign of the rake/steering geometry. I dealt with this issue with electric kickscooter manufacturers, who often make this same mistake. See the Inmotion S1F scooter for a particularly bad offender. Absolutely love this project and keep up the great work Matt!!
Wow ! what a good idea !! don't know what to wish next, but systems of plastic bricks , geant 3D printers ( will be the more difficult to find ) and a new World is for us ! imagine what we can do wtith Lego ? everything ! working and security will be the most hard to have ! the rest is O.K...... well done, and thanks for sharing ! viva creativity ! as with Lego Bro ! take care
I have a LEGO Technics BMW GS-A adventure bike. Doing a full size one or even maybe a body kit for a real GS would be pretty cool. Beautiful work on this one!
You can always upgrade from a monkey bike to a motorcycle with the Lego 857 motorcycle with sidecar. For some great display pieces, I would love to see the 8858 engine set from 1980. The 3 cylinder with valves would be amazing.
I would suggest either a Lego police car with flashing lights or a Lego bond car with working lights, and Lego style projectile’s both with a motor running the rear wheels and working steering:)
I love watching and seeing these kinds of projects and always wish I could do something like this, but when I look at the cost of filament and what not, other than for the "project" or for the "views" I just cant justify actually doing something like this myself rather than buying. I love 3d printing, but I feel that for most things its better to just buy when you look at time to design&/print. For some things it makes sense, but I would say this is mostly for entertainment purposes only. Cost of filament alone is likely 750+ to print if not more. These videos are great for inspiring kids to create and use their mind and hands.
