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Showing results for tags 'suspension'.
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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. -
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! -
1:10 Large - scale motorized 4x4 Tow truck
Zerobricks posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
I don't usually post my work projects here, but every so often there is a special one that I really want to showcase more in detail. Today I want to show you one of my all-time favourite projects, which is packed both full of functionality and a very high level of detail. Before we go into the details, lets' first let's talk about the idea behind it. We (the BuWizz team) have been cooperating with Slovenian AMZS (Slovenian Automobile Association) for a while now and they are the ones who allow us to record the various speed breaking and such events on their polygon. An idea emerged for a project to design and loose replica of their existing Tow Truck which is to be used for education purposes. Here's how one of their tow truck looks like: I decided to use this specific model as an inspiration of my representation and here were the basic starting functions and features: 1:10 scale Capable of lifting and towing an actual 1:10 model like 42125 All Wheel drive Working gearbox Realistic suspension Highly detailed As with most of my projects, i first started working in LDD and this is what the first prototype looked like: I took some liberty with the shape, notably I removed the crew compartment in order to better the lift arm details. As the project progressed, so did the amount of functions, features and details until I ended up with this long list: Motorized with 11 motors Powered by 2 BuWizz 3.0 Pro bricks All wheel drive powered by 4 BuWizz motors Working gearbox with a high and low gear 3 differential locks Independent suspension in the front Solid rear axle in the back which uses 3x13 curved panels as leaf springs Working V8 engine connected to the drive motors Functioning steering wheel linked to the steering rack Motorized lift which can unfold, raise and lock onto thr wheels of the towed vehicle A motorized winch in the rear Working front LED lights Opening doors, hood and compartments Detailed engine bay with battery, air filter and washer fluid Compartments filled with details such as fuel canisters and various tools Other details include cones and fire extinguishers 3D printed braking discs in the front for show Total piece count is around 3060 parts Just over 3 kilograms 51 cm x 24 cm x 22 cm when folded excluding mirrors Capable of lifting and towing a 1:10 scale car like 42125 even up a steep hill Top speed of 10 km/h Here's an overview of the model and the basic mechanical functions: Driveline is powered by 4 BuWizz motors. The motors drive a 2 speed gearbox and a fake V8 engine: Gearbox is powered by a PU M motor and uses 2 mini linear actuators to switch between low, neutral and high gear: Each of the 3 differentials has it's own lock, actuated by a wave selector and powered by a PU M motor: Steering system is powered by a PU L motor and uses two steering racks in order to both steer the wheels and turn the steering wheel: Finally, there are several more PU M motors used to power the rear arm. The main actuators lift the whole arm and are powered by 1 PU M motor: Another PU M motor is used to unfold the lower part of the lift arm using 2 mini linear actuators: Finally another PU L motor is used to lock the wheels with two more mini linear actuators. The driveline is designed in such way that the arm can swing a bit while cornering: The lifting arm had to be designed to be as strong as possible, yet thin enough to slide under the car we want to tow. The final version was under 2 studs high and capable of lifting a 2 kilogram heavy model with ease: With all the details finalized and the parts omptimized in the LDD version, it was time to build the real deal: As mentioned above, the model is full of details that can be accessed by opening the various compartments: The rear view showing the folded tow arm and the 2 large actuators used to lift it: Few more pictures of the model next to the real deal: Of course no Technic photoshoot wouldn't be complete with the most important photo of them all, the underside: The underside was left open and exposed intentionally, so that the gearbox, the differential locks and steering system can be observed. Of course as with all the projects, this one also had some issues, the biggest being the use of 3x11 curved panels as the rear leaf springs. Originally only a single pair was used to support the weight in the rear and the additional load of a towing vehicle, but it soon proved too much for them and over time they ended up breaking. That is why for the final fix, they were doubled, to increase the stiffness and durabilty of the rear axle: Other than this, there were no other major issues with the model. The driveline has yet to skip a gear, the joints are holding (even the small CV joint used in the front left side) and the model ended up being robust enough for some really rough driving. As mentioned at the start of the topic, this is one of my best models to date, I'm really happy with the amount of sheer functionality, features and details I managed to cram in it and it will forever hold a special place in my heart. To wrap up this already long topic, here's a couple of videos of it in action: -
Here's a model I actually completed a year ago in order to be unveiled in time for the BuWizz picnic back in 2021, but we all know how things went... Anyway since the picnic did happen last weekend, I decided to unveil my most powerful offroader. The basic design is based on the Wildcat 4x4, but this version adds more power, a 2 speed gearbox and a third axle to the formula. As with the older version, each axle has independent suspension, plus the entire axle can pivot or swing, effectively giving this model double suspension setup. Indepedent suspension is great at absorbing small bumps when driving quickly, while the axles pivot along the terrain when crawling. The driveline was quite a challenge. In order to transmit the power from 12 motors to the wheels, each wheel ended up having it's own dedicated 2 speed-gearbox. The final driveline is extremely compact and efficient, with only 3 gears engaged at any given time. There are also no differentials or perpendicular drives, so nothing that can break or skip. Each gearbox is actuated by a PU M motor using worm gears, which prevent any unwanted skipping out of the gear. This way each wheel is powered by 2 BuWizz motors via a dedicated gearbox: The following gif shows how the front axle is designed along with the whole model: Here you can wee, how the front axle tilts in order to adjust to the terrain: The rear axles are made in the same way as the front axles, minus the steering. Rear axles are also designed to work in tandem, when one goes up, the other goes down. When one tilts left, the other tilts right. This way the rear suspension is extremely flexible: And finally here are some specs of this beast: Length: 52 cm Width: 26 cm Height: 20 cm Weight: 2,5 kg Top speed: 15 km/h (rounded up) To complete the presentation, here's a video of the model in action, a big thanks out to @braker23, @Sariel and @kbalage for the footage. Final thoughts... this is my most potent offroader to date. The sheer amount of power, torque and speed is hard to wrap your mind around for a model made entirely of small plastic pieces. Having said that, I think there are still few areas to improve: Tendency of the front wheels to fall off at hard bumps - A lighter version would help to reduce stress on the hubs and wheels. Could use a higher steering angle - Would have to find a way to integrate steering racks inside the transaxles. Protection againt depbees and dirt entering the drivelines - Something that would also not reduce the ground clearance, tiles might work.
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This buggy contains a 3600KV brushless motor (2838). It has a pinion made from a LEGO axle and it runs a seriously good working drive-train. Together with the new 42109 differential and a (new?) 2D suspension method it turns out to be a fun car to drive. Please watch a video here. Especially the suspensions are worth having a look. More and more I'm using custom springs to create all sort of applications. Useful and useless. Almost useless is the spring-lock to open the hood. Very useful are the long front springs and the two-dimensional rear springs. Please let me know your comments. No building instructions available yet. If there is a need, let me know.
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42141 Crash Team Racer - alternate build
Timorzelorzworz posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Hi folks, I'm happy to present my 42141 alternate build, which seems to be the first alternate model of McLaren Formula 1 released so far. Instructions can be found as usual on rebrickable. This Crash Team Racer Fun-Kart is an alternate build of set 42141 McLaren Formula 1 from 2022. No other parts are required to build this model. The model uses 3 spare parts that are included in the set 42141, with a total parts count of 1257. Keep in mind that the set 42141 McLaren Formula 1 comes in different versions with different sticker sheets that do not affect the build of this alternate model. If you own any of the set 42141 McLaren Formula 1, you can completely build this Crash Team Racer alternate model without any restriction. What is a Crash Team Racer? This Kart is driven by the character Crash Bandicoot in the 1999 video game Crash Team Racing and Crash Nitro Kart as competitor to the very popular Mario-Kart games. In 2019, the game Crash Team Racing Nitro Fueled was released as remastered version for next-gen consoles, where this Kart appears again in better quality. You'll find renderings from the video game at the end of this article. Functions & Features smooth independent suspension in front and back steering with working steering wheel piston engine driven by differential through rear axle custom built engine block detailed design with many fun to play 39cm x 29cm x 19cm Impressions Testdriver Schorch seems very happy with the finished model... The giant exhaust pipes with flames are easy removable for a more common look... Custom built engine Because the standard engine parts won't fit at the scale of this alternate model, the highlight of this build is the custom made engine block, which works pretty well with a nice sound. Instructions The premium instructions for this Crash Team Racer comes with 258 pages of high quality images and steps to ensure a challenging but satisfying building experience with many cool building solutions. Instructions can be found on rebrickable. Following are some example pages of the instructions: Racer from the video game Have fun with this Crash Team Racer alternate build. -
[TC18] Porsche 911/964 AWD
Limga posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Hello, everyone! This is my first attempt to participate in Eurobricks contest. I am glad to see a lot of entries and I must admit that I had a lot of inspiration and ideas from them. As you can notice from the topic's name I am going to build Yet Another Porsche, since I am among the others Porsche-lovers. The features I want to implement: 1. All wheel drive with three differentials. 2. Independent suspension on all wheels. 3. Working steering wheel and detachable HOG. 4. Two rows of seats (something you don't see very often even in the bigger scale). 5. Working Flat-Six engine with Boxer configuration (not Flat V180, cause it is Porsche) 6. Openable bonnet, trunk and doors with locks. 7. Foldable front seats (you need to access back seats somehow, right?) I guess the list of features looks very optimistic, since the scale doesn't help at all. But I do love these challenges, as they make my head burn in thinking how to solve them. Also I did want to integrate a 4-speed gearbox or at least a DNR-gearbox. I did come to some compact solutions, but every one of them would ruin the interior and backseats. I still hope to somehow manage it, but reluctantly I discarded gearboxes for now. So far I have a prototype of the front axle and the fake Boxer engine. Front axle. I am really proud of the front axle solution, but I need to thanks other builders with similar setup which gave me inspiration. It is double wishbone indepent suspension with floating differential: The engine. The idea was to make a model of real Boxer engine where pistons are moving symmetrically, since the Boxer engine are the ones that are used in Porsche. The difference between Boxer and V180 is under the spoiler. The classic engine with camshaft and pushrod would be too big in Boxer configuration, so I used the idea with 2L axles and 1x1 plates. The only problem was to make axle move back after is was pushed by the plate. Luckily, @Thirdwigg referenced to this post (in spoiler) and I had the solution. After several iteration, I came up with this. Maybe it can be made even smaller using halfpins but I am already satisfied with the result. Antenna bars are used to prevent axles from falling out in case engine will be tilted. Also, in my opinion, they do look like camshafts to operate valves:) That is all of the progress for now. I do have some ideas for features I listed and would happily share the progress. Stay tuned! -
Hey guys, During a chat I was pointed to the Steinwinter Supercargo 2040. I was fascinated by the look and decided to build it. It was designed by the german engineer Manfred Steinwinter. During my research, I found out that he build only one prototype, but planned many more versions. I liked the three-axled version and so started with a rough sketch to get an idea of the proportions: While I was searching for images of that truck, I also contacted the current IP owner and asked for blueprints. Fortunately he liked my project and he send me some. Since then this truck went through many iteration of improvements and design changes. In the end I decided to use Powered Up to control it. This is the current state: These are planned/implemented features and specifications: Current weight: 3kg Length: 86 studs Height: 14 studs Width: 27 studs Power supply: 4x Technic hub Driving: 4x C+ XL motor, each motor is connected to one hub to spread the load (3,528:1, theoretically 0,74 km/h @7,5V @124Ncm) Steering: 1x C+ L motor, two steered axles with Ackerman geometry Compressor: 1x C+ L motor, 4 pumps 3 RC valves: 3x C+ L motor, 3x newest valve one for each the rear axle, front/middle left wheel, front/middle right wheel Angle sensor for suspension on front and middle axle: 2x C+ XL and 2x Boost Medium motors OR 2x C+ XL Angle sensor for rear axle: 1x motor (not implemented yet) Air/pneumatic suspension on all axles controlled by Powered Up double wishbone suspension on fron and middle axle Each front/middle wheel on the left and right side are one unit. That means if the front wheel is pushed up the middle wheel is pushed down. That way the weight is equally distributed on the wheels live rear axle When I decided to use Powered Up I thought about controlling the ride height somehow with Powered Up. To do that I needed something to read the position of the double wish bone arms and the rear axle. Since several motors in the C+/Powered Up eco system can report their position, tried to use them to read the angle of the suspension arm. I successfully implemented that on the front and middle axle. For the rear axle I haven't found a good solution yet, because that axle can move on two axis. While I'm waiting for some additional parts, I'm working on the solution for the rear axle. As for the code, I already made a proof of concept. I created a test setup and wrote some code, which reads the angle of a suspension arm and adjusts it to the desired value. for the finished MOC a can think of something like a parking height, highway ride height and more or less off-road height. Once the chassis is finished the and the Powered Up is working I'll start working on body. Feel free to leave comments, critique and suggestions. -
[MOC] Unimog 437
Thirdwigg posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
I guess you could say I couldn't make up my mind about the kind of Unimog I wanted to make next. So I decided to make a platform that would support multiple versions. Features: Interchangeable platform Long and short wheelbase options Standard and Doka cabs, removable Manual control PF control (drop in) Front and rear suspension Steering 4x4 with I-4 fake motor Opening doors and hood Tipper bed options Feel free to check out thirdwigg.com to learn more about the build. Manual SWB with tipper bed. Manual LWB Doka with tipper bed. Power Functions (XL drive, Servo steering) LWB with cover. Manual LWB with canvas bed showing the suspension travel. You can find more pictures on my flickr. I have been adding instructions for the various versions here, and more will be added over the coming weeks. Someday I'll make a camper, because, everyone needs a camper. This was a fun project, and I loved the way it turned out. I have the LWB on my desk right now, and I keep getting distracted from work. I hope to add additional options for the system at some point, and will take other suggestions for versions to add. Hope you enjoy. -
[MOC] Mercedes Race Truck with BuWizz 2.0
Teo LEGO Technic posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Hey guys, Here's my model of a really basic race truck powered by BuWizz 2.0 as an experiment. The power is amazing, way above expectations. Features of the truck include: Front independent suspension, rear trailing arm suspension Rear wheel drive with 1 buggy motor More pics here: https://bricksafe.com/pages/Teo_LEGO_Technic/mercedes-race-truck And here's the video, edited with music now: Hope you enjoy!! Teo -
multi link suspension help
platinum831 posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
hello i am working on a moc with multi link suspension it will have pneumatic cylinders as the shocks to act as air ride the steering of the suspension is a little funky and I don't know where i should mount the cylinders too in order to get full suspension travel with them installed any help is greatly appreciated -
[MOC] Unimog U500 (405.201) (Instructions Posted)
Thirdwigg posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Finished 01.01.2021 A couple of years ago I started a modular Unimog project with the hopes of having a build that would be flexible enough to support a number of different versions and options. It certainly was. However, the Unimog 437 project was intended to provide a U500 cab option, but for a couple of reasons (namely those tires), it was not a great fit for the project. So in the back of my mind I figured I would do a proper U500 version at some point. The 437 was pretty popular, and it fits within my current design language; mid-sized, manual, truck/car, feature packed. Then when I saw the first reviews of the 76139 Batmobile set, and saw the new 68.7mm tires, and I knew it was time to resurrect the project. I would keep the scale at 1:17.6 as I did with the 437, and those tires would equate roughly to a 445//65/R22.5. Off to the races! I am partial to the 1st generation (2000-2013) U500, plus @I_Igor did a great 423 series already (Eurobricks). Also, I like the 500 more than the 300 or 400. The 300 looks tiny, and the 500 SWB gives me two extra studs on the wheelbase (24st) over the 400 (22st). I guess if I have enough space I'll switch to a 400, but I (generally) never need less space. I pulled a PDF for the scaling, and I started to set my build parameters. I build my MOCs by making a first draft with all the constraints: wheelbase, length, height, width, and general bodywork ideas. I try to keep the colors correct, but if the part is not in front of me, I move on to replace later. Then I start working in features, and rebuild as needed. The first draft came together pretty quickly. While I managed to buy the first tires available on Bricklink, I was not willing to wait for their arrival before I started building. At this point, I determined the features of the truck: Front and Rear Live Axle Suspension (sans portal axles) (With dual leading/trailing links and Panhard rods) Front Steering Fake Motor Tipper Bed Tipping Cab Front PTO Rear PTO Rear Bodywork PTO Front Mounting Plate Modular Rear Bed Attachment Points Realistic Bodywork The tires arrived in time for the second night of building, and they look perfect. By now, all the functions were in place. Loosely. Below you can see the general Front Mounting Plate, and the front PTO. Currently in front of the bed is a Gear that will power features on a mounted body (al la TC9 Entry) Below you can see the rear bed system. I have found this three way tipper option to work great on my 437 and the MAN TGS truck. The control input is currently on the left side, but it will need to move. The orientation of the lift is backwards, which does not allow for good tilting leverage. Turning the mechanism around will need to move the input to the rear. This compounds the issue with the rear PTO. It is currently in place just above the hitch, but will need to move when the tipper input is placed in the rear. Few U500s have a rear PTO, so I'll have to decide if this is a feature I want to retain. More to follow... Until the next post, hope you enjoy the next Thirdwigg Motors project. -
VW Camper 10220 - modding ideas
peter_m posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
10220 is my favorite Lego model of all time (yes - it wins with every Technic set ;) ) - but it definitely needs some love to be something more than just a beautiful sculpture. I would like to add suspension and steering - but I do not have any bulletproof solution for such a small space (picture of bare "base" - http://3.bp.blogspot.com/-c2sdXPLjFxw/TpfWQGZQUmI/AAAAAAAACO8/ARmir6mTTow/s1600/H88-Lego-10220-T1-Chassis.jpg - thanks to The Car Blog) Has anyone ever made a Lego car in similar space with working suspension? I need some inspiration :) -
MOC: panther trophy truck.
Woodstock pl posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
I’ve always wanted to make a trophy truck, here’s my take on one:) I call it the panther because is black, and the headlights make it look like a cat:) It features long suspension travel just like a real trophy truck. Here is the bare chassis. Chassis and body side by side. Specs: Drive two l motors steering servo motor battery BuWizz 2.0 suspension rear, three link front swing axle independent if you have any questions please ask;) -
I'm prototyping a small scale Dune/Trophy Truck chassis that I want to make instructions for at some point. I got two interesting iterations so far: The first one is buggy-style with rear engine and rubber-band front suspension. the second one is more of a truck, has a front engine and all shock suspension. Additionally I had some interim iteration between those two that I didn't made a video of, but it had some interesting features as well: Gallery for this build: https://imgur.com/a/6umV5zm I'm still not fully satisfied with what I've got so I'll iterate some more on the front suspension and the chassis structure itself before I can make instructions, but I hope you'll find some of the techniques interesting. Also check out my channel, more cool stuff out there, I promise :) -
[MOC] Ford Bronco pickup 2020
LoMaC posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Designed model is based on my previous model Ford Bronco, but created in pickup version with fully reworked rear suspension and body (look and feel I kept as it was in previous Bronco version). During creation of this model, modular build concept is used to simplify the building process by splitting the overall process on three stages. Instruction: hereDimensions: 16 x 38 x 20 studWeight: 1100 gFunctions: Steering Control+ L motor Drive Control+ XL motor Front independent suspension Rear 3 link suspension Openable doors, hood, trunk Detailed exterior and interior Adjustable seats Modular building (body can be easily detached) Quick access to the battery box for batteries replacement You can change the torque just by replacing gears in the chassis -
Help in improving tank suspension
general molotof posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Hi all, So recently I have been building a T-90A at 1:25 scale. I solved a lot of problems but i am stack with an under performing suspension system. The problem lies at the road wheels, the way they are attached to the suspension, and the traction between them and the tracks, not the mechanism itself (which is fairly responsive). Let me explain: (sorry for the picture quality, it won't let me upload better ones) There are two sets of 4185 wheels, attached to a 30374 light saber blade (which acts as the spinning axle). The light saber blade is itself attached to a 6632 1x3 thin lift arm, which is then attached to a 15462 5L axle with stop that acts as the pivoting axle of the suspension. The suspension is made of orthodontic rubber bands, but the smaller Lego rubber bands should work as well (i tried to explain the poor quality pictures as best as i can). The problem: The light saber blade creates a lot of friction with both the wheels and the axle socket of the liftarm, so when the tank moves, the wheels won't spin (which is a problem). I am asking here for help, does anyone more experienced than me has a better solution (note that the overall dimensions of the suspension, must not change in order to keep up with the scale). Thanks in advance! -
Tiger 4 x 4 x 4
Zerobricks posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
After completion and playing with the Leopard for a few months, I noticed the model had a few shortcomings which I wanted to eliminate with this version. These include: Suspension oscilations at high torque High center of gravity Instability on rough terrain at high speeds Most of these issues were due to the usage of the torque tube suspension which is simply too heavy and unresponsive at high speeds. What I needed was to replace the live axle suspension with independent suspension while keeping the articulation needed for offroading. Here's what I came up with: Let's break down the suspension to it's basic components to better understand how it works: Colored green are the main shock absorbers. These caryy most of the wight and provide a high suspension travel Colored orange are the gearbox transfer arms which fix each perpendicular gearbox firmly to the suspension, thereby reducing friction and fixing the U joints to keep them from popping out. Colored black are the side beams which help guide the transfer arms and hold the suspension together Colored in red and gray are the two independent drivelines powering the wheels. Finally in transparent, the suspension arms are made as long as possible for maximum suspension travel. I built the first version with this setup, but soon discovred a flaw. The torque from the drivelines would push the suspension arms down, causing the suspension to stop responding (indicated with red and grey arrows in photo above). In order to solve this problem I added the suspension bridge above, colored in pruple. The suspension bridge performs the following functions: Compensation of the driveline torque Supports 20% of the model's weight Improves articulation when going over rough terrain With the suspension solved, I turned my attention to the chassis. I wanted a model with high torque and high speed. To achieve that I installed a two speed gearbox for each independent driveline powered by a total of 4 RC motors: Finally a very sturdy chassis based on frames was built to support the model. Each axle was given it's own independent steering with servo motor and each driveline has an M motor for switching gears. This redundacy means that even if half of the model breaks down, it can still drive back home. Next step was building the model in real life. Thanks to ForwART's custom stickers the exterrior really came to life: The doors can be opened, revelaing two seats and the steering wheel: Each wheel has over 6 cm of wheel travel, allowing the Tiger extreme articulation rivaling live axle setups: And let's not forget the most important photo of them all: Finally, since there is only so much I can tell in words, enjoy the video experience: As usual the LDD file of the model is available by clicking the photo or link below: https://www.bricksafe.com/files/Zblj/tiger-4x4x4/Tiger 4x4x4.lxf To summarize, compared to the previous Leopard, the Tiger has the following improvements: Improved stability due to the independent suspension and low chassis Higher top speed due to the gearboxes Eliminated suspension oscilation Improved performance at high speed thanks to lighter and more responsive independent suspension Improved maneuverability thanks to all wheel steering Sadly there are also a few drawbacks which I plan to fix in the future version: When pushing the model hard in Ludicrous mode and in low gear the 12 tooth bewel gears can get damaged and need to be replaced Low steering angle (18 degrees) Because only one servo motor is used per axle, steering is more prone to be bumped out of center. -
Ultra-compact Christie Suspension
Sariel posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Just an idea I've had for one of my projects but eventually decided not to use it because it looked wrong for this particular project. It works fine, though, so I'm sharing. It's pretty simple and may be obvious, but perhaps it will help someone. -
[MOC] 42110 model B (truck)
LoMaC posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Dimensions: 29.5 x 49 x 30 studsWeight: 1524 g Instruction: download here To see all my ongoing projects follow me on instagram @anton.kablash Functions: 0. In the model i kept original chassis with improvements and adjustments HoG 4-speed sequential gearbox All wheel drive with 3 differentials Independent suspension on both axles Working detailed in-line 6-cylinder engine Working steering wheel in the cab Openable doors, hood The driver's cab can be tilted for access to a detailed V6 engine Working doors locks Detailed exterior and interior -
Axle Collection Thread
Sariel replied to efferman's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Just an idea, hope it helps someone. Instructions available here: http://sariel.pl/downloads/ -
[MOC] Ford Bronco 2020
LoMaC posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Designed model is based on the Ford Bronco revealed in 2020. During creation of this model, modular build concept is used to simplify the building process by splitting the overall process on three stages. Follow me on Instagram @anton.kablash Instruction you can download here: Ford Bronco InstructionDimensions: 16 x 38 x 19 studWeight: 738 gFunctions: HoG (detachable) Working steering wheel in the cab Front independent suspension Rear 3 link suspension Working engine Openable doors, hood, trunk Detailed exterior and interior Adjustable seats Modular building More photos in the Ford Bronco Album -
C-Model for Creator set 31085 (Mobile Stunt Show). An oversized hot rod for stunt shows, spewing fire, going fast and loud and getting some nice air time after jumping from ramps. Features: - individual suspension for each wheel (hard front and softer rear for crazy landings) - minifig-scale cockpit with steering wheel, gear shifter and mock gauge - small but openable and functional trunk (set's wrench would fit, or maybe two pizzas?) Pictured is the render of exact .io model of the physical build (aside from the rubber band for the rear suspension) - I don't have enough space and proper lighting to make some good photos.
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This MOC is almost one year old and was made to participate in Moscow BrickFest 2019 Trophy&Trial competition. According to rules of competition, models need to have differential on both axles. I wanted to make a model with independent suspension and decent drive ability and that is the main reason for engineering solutions in this model, including old differentials being shifted towards the middle of the chassis. The drivetrains are organized with swinging gear meshing which are acting like inner CV-joint. - 2 L-motors for propulsion - Servo-motor for steering - Li-Po battery block - SBrick for control Front suspension is independent and based on McPherson strut suspension. Front wheel are supported with strut and lower arms. Rubbers bands on lower arms are used as springing elements. Lower arms are made of thin liftarms to make driven axle possible with good clearance. All three motors are integrated in front suspension, being as low as possible to ensure low center of gravity and enough space in chassis for shifted differentials. Rear suspension is just another classic double wishbone suspension with pretty long travel. On the rear I used planetary hubs from 42099 set to ensure that CV-joint won't break under the load. Wheels rotation speed is synchronized via gear ratios, drivetrains to front and rear axles are separated and each one uses its own motor. Suspension is quite soft and sink a little under it own weight but keeps about middle position during driving. Overall design was inspired by Safari editions of classic Porsche 911. And some WIP-photos: WIP-photos with first prototype of strut, that was broken by rubber bands tension : And some boastful photo of suspension travel I think of this model as of unfinished, but I don't have neither time or will to finish it, especially regarding the exterior. I have plans for another iteration of "Porsche-like" offroader with another unusual drivetrain. Thank you for you attention! I will appreciate any comments.
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Adjustable suspension
chlego posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Hey everyone, I signed up to Eurobricks because I need some help: I am building a 1:8 scale car right now, and I would really like to make an adjustable suspension for it. Point is: all my prototypes gave up under some weight, or weren't even capable of holding the spring in place... Can someone please help me? I do have an idea: the hole thing could be held by a worm gear.
