Search the Community
Showing results for tags 'zerobricks'.
Found 10 results
-
Simple Off-Roader + Instructions
Zerobricks posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Many people have been asking me for a simple, easy-to build and most importantly cheap Off-Roader. When I started this project, I've set myself the following guidelines: Use a single BuWizz 3.0 and "only" 2 BuWIzz drive motors Implement a 2 speed gearbox Maximize the ground clearance by using a pendular axle (this way the independent suspension doesn't have to loose ground clearance when going over obstacles) The model has to be built from under 500 parts All the parts have to be standard and in current production Keep the number of different parts as low as possible Use color coding to simplify the building process Design the model so that it can easily be modified by other builders Create proper building instructions And this is what I came up with in the end: I managed to successfully realize the all the planned functionality, features and more: All wheel drive 2 speed gearbox Pendular front axle Independent suspension on all wheels Openable doors for easy acces to the charging port Interior with seats and a steering wheel The dimensions and specs are as following: Built out of ~460 parts 27 x 20 x 13 cm ~ 850 grams Top speed of 7 km/h As usual there's a video showcasing the model in more detail: But just building the model and recording the video was only half the story. I also taught myself how to create the building instructions using the Studio which can be found here: https://bricksafe.com/pages/Zblj/simple-off-roader Since these are my first such instructions, they may not be ideal... So in a case of any issues, confustion, or such I also uploaded the .IO and .LXF files which can be found in the corresponding Bricksafe folder: https://bricksafe.com/pages/Zblj/simple-off-roader All in all this was a great learning experience, I'm always happy to learn a new skill and being able to create my own instructions sure is a good skill to have as a LEGO builder. To conclude; using this as a base, I wonder what kind of tweaks, improvements and crazy mods other builders will come up with! -
1:12 Audi S1 e-tron
Zerobricks posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Here's a fun little project I came up with while trying to find a way to build the smallest AWD model with independent suspension. Having found a solution I decided to build a representation of the awesome Audi S1 e-tron using a 3D STL file purchased online. I set myself the following functionality and features as goals: All Wheel Drive Proper independent suspension on all wheels Each wheel powered by one BW motor Working steering wheel Detailed interior with proper seats and details Easy access to the 2 BW bricks powering and controlling the model Deisgn the body to be accurate to the 3D reference, yet robust Part count of 1200 or less With the goals set, I came up wih this prototype in LDD: The next photo is showing just how close the model is following the reference 3D model in green: And here's the model in real life, built out of exactly 1200 pieces: I took full advantage of the new micro panels, so there are almost no flat/straight surfaces in the model: Finally the belly photo showing how I used brick-built CV joints in order to keep suspension and drive system as narrow as possible. And yes, those are rings from LOTR sets I will post better photos and a video as usual when I find the time. For now I can say that this thing has a really high power-to-weigh ratio and it can easily spin all wheels when accelerating. -
Universal off-roader 4x4 V2
Zerobricks posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
As soon as I saw the new parts in the 42159, I knew I just have to use them to upgrade the previous version of the Universal 4x4 off-roader. After tinkering for a few weeks in LDD, and actually building it IRL yesterday, it is officially finished: The V2 has a big list of upgrades comapred to V1. Dual independent drive, one for left and other for right wheels - allowing skid steering Two 3 speed gearboxes - that's right, this is my first off road vehicle with 3 gears for optimal performance Improved steering system - much more direct, accurate and responsive Highly modular design - easier access for maintenance and charging Top speed has been increased by 40% both in low and high gear - the previous version had ample torque, so I geared up all the ratios by 40% and added a middle gear Increased suspension travel at the rear - first time I'm using 11 studs long suspension arms Improved drive motor mounting - now they are no longer at a weird angle Similar part count to the V1 - even though it's 2 studs longer and has way more functionality it has only 20 or so extra parts, totalling at 796 (I tried to keep it under 800) Here you can see how the model looks in LDD: Overview of drive, switching and steering drivelines: The dual driveline is powered by 4 BuWizz motors, 2 motors for each side. The lower PU L motor moves the steering rack via an 8 tooth gear. A second, higher mounted PU L motor spins 4 wave selectors via 8 and 28 tooth gears which in turn switch between the 3 gears. The gearboxes have the following gear ratios: First gear is 20/16 = 1,25 - totalling 4,32:1 gear ratio from motors to the wheels Second gear is 24/12 = 2 - totalling 2,7:1 gear ratio from motors to the wheels Third gear is 28/8 = 3,5 - totalling a 1,37:1 gear ratio from motors to the wheels Thanks to the 3 speeds gearboxes, the model has plenty of torque to climb at 45°+ degrees angle, yet can also reach a speed of over 18 km/h, making it my fastest dedicated off-roader to date: Testing it outside, jumping over pump track course, driving through tall grass, etc... I have yet to encounter any major issues. The model is reliable, fast and can take a beating/rollover with ease. So far I'm really happy with it and can't wait to record more media and publish it soon, so stay tuned! -
[WIP] Realistic tatra 8x8
Zerobricks posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Inspired by the release of the planetary hubs and the diff lock idea from Zetors I decided to create a proper, realistic Tatra 8x8 with the following goals: Use of planetary hubs - Keeping it realistic, so no portal ones No load bearing axles - Most other models used the same drive axle to also hold the half-axles in place which increased friction in the driveline Realistic steering setup - Using a smillar mechanism the real trucks use Differential locks on all wheels - Each axle has it's own diff lock + a central one Here's what I came up with so far... The concept uses the blue bevel gears to transfer the power to the half-axles without spinning the pivot axle. This also allows for wheels to turn at different speeds when cornering. Once the power is transfered to the half-axles an additional gearing is used before the power is delivered to the wheel. Total gearing on half-axles alone is 1:9. Differential locks work by locking one of the differential's output to the main drive axle. As mentioned before all 4 axles have lockable differentials along with the central differential. Steering uses a couple of 9L links turned by the turntable acruated by an 8 tooth gear. This setup provides the front axles with slightly different steering angles. The model will probably powered with 4 of the BuWizz motors. Total gear ratio is 1:21 which should give the model around 900-1000 Ncm torque. I think the concept looks very promising so far and I will keep on building it virtually until I'm confident enough to order parts. -
[TC17] FrankenBase
Zerobricks posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
It has been years after the unspeakable and the survivers used whatever machinery they found to make a new start. The last bit of civilization was rebuilt in a form of the mobile base nicknamed the FrankenBase due to the nature of it's design. Frankenbase was assembled from the following leftovers: Buckets and bogies from a pair of tracked loaders Front frame, suspension and axles from a monster truck Command bridge and helipad from a stranded ship Crane and two containers were salvaged from a dried up port The base also features three support vehicles, a quick buggy, a small bulldozer and a helicopter: To propel the massive base, all wheels and trackes are driven and suspended: The suspension allow the massive vehicle to easily crawl over rough terrain: The track bogies can also steer, giving the FrankenBase a very tight steering radious: The only way to acces the abse is by lovering the ladder in front, which also serves as the ladder to acces the walkways surrounding the entire vehicle: The crane uses a special mechanism which locks onto containers in order to move them: The command deck is protected by nets and features controls: View of the backside with the crane raised: Some trivia about the model: The entire model took me around 2 weeks to build All functions are powered by 19 motors and controlled by 6 BuWizz bricks It measures over 130 cm long, 45 cm high and 40 cm wide The weight is estimated to be around 7 kilograms This is my second largest model built, first being the Go-kart It's one of my most eccentric builds ever The different colors are intentional, representing the chaotic nature of it's envoirment Size compared to the Liebherr: See the model in action the video: -
After a few month break it's time to get back to Lego and Eurobricks, and why not do it in style I give you the leopard 4x4: The model is a combination of the following ideas and concepts: Quite some time ago I came up with double torque tube suspension idea and now it was time to use it in a real model Claas tyres were an obvious choice due to their agressive profile and massive size. With the release of the 42069 set, I was finally able to build a model with a unique and striking color combination The final model took me some 12 hours to build and the features are as following: - Powered by 4 RC motors and 2 Buwizz - Double torque tube suspension - Independent dual drivelines - Dual servo steering gemoetry - Working winch - Working lights - Openable doors - Openable hood - Openable and removable rear cover Specs: - Width: 24 cm - Height: 24 cm - Weight: 1600 grams - Final gear ratio: 1:5 from outermost RC motor output - Total power: ~60 watts Now onto the photos: The rear trunk can be opened: There is barely enough room left for seats in the interior. Notice the different springs used to potimise suspension. The before mentioned springs give the model excellent flex: There are two servo motors used in order to keep the steering system as stiff and strong as possible: Under the hood there is a hidden winch, which is strong enough to lift the car: And the final, most important photo. Notice how the left and right side wheel drive axles use different colored joiners and bushes: And finally there is a video of the model in action: Safe to say the combiantion of the four RC motors and two Buwizzes with a low gear combiantion of 1:5 results in a model with impressive performance. As seen in the video Leopard can wheelspin all 4 wheels when accelerating on flat surface, which is a first for any of my Lego offroaders. Dual servo motors provide massive steering power and rigidity and allow the wheels to be steered into obstacles with ease. Only downside to the model is it's slightly high center of gravity cause by all the added panels and detailing. P.S. It feels good to be back
-
[TC13]Roadster 2
Zerobricks posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Here's my entry model for the TC13 competition: It was inspired by the real life Tesla roadster 2 both aesthetically and mechanically. The model uses 3 pullback motors in the following configuration: As you can see the rear two pullback motors power the wheel directly for best possible acceleration. BUT the front pullback motor is geared up. This additonal gearing gives the model a higher top speed and a greater range, which is a technique I have yet to see on any other pullback cars. Around 30 panels were used to give the car it's very smooth, organic shape. Notice the small yellow rubber band used to keep the front part tightly together: There is enough room in the back of the cabin to fit two or three small human beings: The rear boasts a difusor and a small spoiler in the back, just like the real thing: While this is one of my smalles models to date, I am very pleased with how it turned out. The shapes are very smooth and organic and the fact the car drives mere milimeters above ground, give it a very sporty feeling. Video coming as soon as I find enough space to run it -
[AMS1] 42056 Porsche 911 GT3 RS Crawler 4x4
Zerobricks posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
I decided to open a seperate topic for this beast. Inspired by Letsbuild's idea to crawlify a Lego set, i decided to go full crazy and try to upgrade the biggest, heaviest and most orange set to date, Porsche 911 GT3 RS. First thing I built was the front axle, which uses the H frame as a placeholder for bewel gear, so there it no possible way of them to slip: Those with sharp eyes may notice the gears are not aligned, this was done in LDD development mode, more info soon The drive than goes directly to portal hubs with 1:3 gear ratio, giving the model 1:5 gear ratio on each wheel. Front axle also has a servo motor which steers the wheels and powers the Porsche's original steering wheel via a ball joint Rear axle powers the Porsche's gearbox via a couple of clutch gears in order to allow different motor speeds when steering or skid steering - Yes, this 4 kilogram heavy model can even skid steer thanks to its independent motor control. Here is the end result As with the original set, I kept the rear axle 2 studs wider than the front: For suspension I used 4 hard springs, which are hald compressed thanks to the model's immense weight. Due to the porsche's wide chassis springs are quite far apart, so the flex angle is not really big, but on the other hand that makes the model much more stable. Performance wise the crawler works very good, despite its massive weight, so far I had no broke U joints or gears and it has enough torque to skid its wheels on hard surface. Expect more pictures soon and a video soon. -
Modular trial truck chassis idea
Zerobricks posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
I got this idea a while ago, when I first got Sbricks. Why not make modular, expendable system of axles and chassis pieces in order to create a system for offroad truck construction. Here is what I sketched up in LDD. First we have a basic axle. It uses 2 XL motors for drive, independet suspension and steering with servo Because we need a minimum of 2 axles, I designed a double chassis holder with two battery boxes: If we combine 2 axles with the double battery holder, we get the most basic configuration, a 4x4x4: In order to expand on the system I designed a single battery chassis extension: Finally we can combine the three basic modules into a 6x6x6: Or even a 10x10x10: In theory there is no limit how far you can go, but I think anything over 12x12 might cause too much strain on the chassis. Important details: - Axles are designed for Claas wheels, which are not in LDD, hence the wheels above may look small - Each axle can use any kind of a combiantion of number of springs and hardnesses for best flexibility and weight support - Each axle is meant to also house and S brick, which allows you fine steering angle control in order to support any kind of configuration or steering mode (only front, only rear, all wheel steering, crab mode) - For now this is still a concept, so I will relase the LDD file once I build, test and polish the concept -
[TC11] (cat A) Square pancake battlebot
Zerobricks posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
For this competition I wanted to build the most advanced bot, packed full of features: - Mecanum wheels, they allow the bot to go in ANY direction, even sideways. Each wheel is powered by 2 M motors, therebye totaling at 8 M motors for drive, combined with a flippable design which allows the bot to drive upside down - Liftable spikes to raise the opponent and siable them in the front, powered by 2 L motors and at the sides, powered by 2 M motors - The rear has a very fast spinning weapon, which tops at some 4000 rpm, powered by an RC motor - to top it all off the whole rear spinning weapon is on an arm which can pivot upward, therebye delivering a powerfull blow. For that action I used 4 XL motors. - And finally some corner rubber guards make it very hard for this bot to be picked up and dragged: Squeezing 17 motors, 2 Sbricks and 2 battery boxes in a robot of less than 8 studs tall and 45 x 45 studs wide and long was a challenge, but in the end I succeded. Because it looks like a rather squarish looking pancakge I decided to simply call it that - square pancake. Specifications: - Powered by 10M, 2L, 4XL and 1 RC motor for a total of 17 motors - Controlled by 2 sbricks - 45 x 45 x 8 studs large - weight is around 2,5 kg Here's spikes and the weapon are suppose to work in together to disable and smack the brick ouf of the opponent: To control the robot I made a custom Sbrick profile for my phone. Controlling all the motors and ways of movements can be quite a challenge And here is the nightmare of cables, motors, gears and bricks which hides under the armor: Please enjoy the video showcasing all the functions: In the end I know this may not be the toughest or nicest looking battlebot, but I think it compensates with a very large amount of unsual features and techniques. Building this model was very fun, among other things it inspired me to continue developing my mecanum wheels for future models. A big thanks to everyone for inspiring me