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Showing results for tags 'lifted'.
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[WIP] Lifted Truck with 3 steering modes
JLiu15 posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
With my Ripsaw Tank MOC essentially done by now (just waiting for some final pieces to arrive) and my PAB order for my New Flyer XD60 articulated bus model still yet to arrive (with more pieces coming for that), I've decided to start another MOC in the meantime. This will be my second model combining Control+ and Robot Inventor after my Heavy Duty Skid-steer Loader. It will have two identical axles, each with a steering motor (medium angular motor) to control steering, and thanks to their absolute positioning feature I don't think I'll have to calibrate it every time, like on e.g. the 42099 set. I was originally planning to use Control+ L motors for the steering, and have this be a Control+ MOC, but found the medium angular motor to fit better with the absolute positioning being another plus. I plan on creating a control profile in the Mindstorms app with different sliders for normal, crab, and 4-wheel steering modes. The drivetrain consists of heavy-duty differentials and planetary hubs, so this eliminates the need for significant gearing down inside the chassis. For propulsion, I plan to use 2 Control+ XL motors, with a fake engine driven by a separate motor. This way, the fake engine can run at all times and there will be less friction in the drivetrain. I anticipate building the chassis to be pretty straightforward, as the entire chassis is essentially a mirror image with two identical axles. As for the bodywork, I'm leaning towards a red car-like body. If so, I will probably name this MOC "Red Beryl C", where "C" is for Crawler. It would be the third model in my Red Beryl series, after my Red Beryl GT of 2018 and Red Beryl X of 2019. Let me know what you think, and any suggestions you may have. Photos: The front axle, with planetary hubs, long shock absorbers, and a medium angular motor for steering: The front axle, with the wheels attached. Note that this is the underside, with the heavy-duty differential visible: -
[MOC] Lifted Truck (with 3 Steering Modes)
JLiu15 posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Model of a lifted pickup truck combining Control+ and Robot Inventor electronics. Features 4x4 drive, 3 steering modes, a V6 piston engine, and full suspension. Functions/features: 4x4 drive Steering with 3 modes (normal, 4WD, crab) V6 piston engine Full suspension Opening hood Opening tailgate This MOC originally started as a side project back in the summer as I was waiting for parts to arrive for my New Flyer XD60 articulated bus model. I was initially gonna use the C+ L motors for steering and power it with the Control+ hub instead of the Robot Inventor one, but found that the Medium Angular Motors from the Robot Inventor set took less overall space in the axles if I place the rack sideways. So for the front and rear axles (which are identical to each other), I put the steering motor on top which drives a rack placed on its side, and used heavy duty differentials and planetary hubs. This gave the model plenty of torque, even without any additional gearing down in the chassis. At the heart of the chassis sits two C+ XL motors for drive and a Robot Inventor hub above them. Thanks to the abundance of pin holes on the Robot Inventor hub, I was able to use it as a structural element. The sides of the hub are covered by panels, as a teal hub on a red/black model would be an eyesore. The top of the hub is covered as well to conceal the screen lights, and to power on/connect the hub I installed levers that hit the power/Bluetooth buttons. They sit just below the cab/bed, and are pretty well hidden/out of sight. The front and rear ends of the chassis were reinforced well enough to withstand the force exerted on the shock absorbers, and the front also has a V6 fake engine driven by a C+ L motor. I had to rework the suspension a few times to make it work well and not be too soft or too hard, but I still feel like it could've been done a little better. Initially I was undecided on the bodywork for this model - I was debating between a car-like body (like the 41999), a cab-over truck, and a pickup truck. I eventually went with a pick-up truck, and initially used rims from the Land Rover. I decided to make the model in a red/black scheme, as I had a lot of black panels lying around but also wanted to give it some color. I feel like the bodywork could've been designed better overall, as the entire building process became pretty discouraging and I just wanted to get it finished. As I was working on the bodywork I just felt like the Land Rover rims weren't the best choice for a lifted truck, so in the end I went with the Technic Racing Medium rims in LBG for a more old-school look. Overall, this is a creation I'm not too happy with. Building around the Robot Inventor hub was quite a challenge as I had to cover it completely to conceal the teal and the screen lights. This also meant the charging port is not accessible on the finished model. The looks of the model also aren't the best. I feel like using a single color for the bodywork would've been better without the red/black color break between the cab and the bed, but unfortunately I don't have that many red flat panels and didn't want to use liftarm stacking. The model has plenty of torque and can easily climb over obstacles, but it also suffers from being top-heavy. Programming the control profile was pretty straightforward though, and the 3 steering modes worked well. After building this model, I feel like while the Robot Inventor hub is a good alternative to the Control+ hub (more ports, lower height, more pin holes, etc), it just feels harder to use in Technic builds, as the teal doesn't blend well with most colors IMO (which could be solved by using the yellow SPIKE Prime version of the hub as it's a more common color for Technic builds, but would cost a lot of money) and the screen lights need to be concealed in most situations. It's obvious the Robot Inventor hub is designed with robots in mind and not Technic builds, so in the future, I plan on sticking to Control+ hubs unless it's absolutely necessary to use the Robot Inventor one (e.g. a space constraint). Photos: Video: -
[WIP] Nissan Xterra
VKTechnic posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Starting work on my next project, which will be a lifted Nissan Xterra! Got a full set of RC4WD Rock Crusher tires (essentially the same tread as the popular BF Goodrich tires), and I've also started modeling a fully functional transfer case based around the new (to me) driving rings. New Tires and things! by VKTechnic, on Flickr The green axle is the motor input, orange is rear axle drive, and yellow is front axle. In the middle, the lavender and blue gears are for HI/LO, respectively, and as expected, the FWD can be disconnected as a 2WD/4WD switch. Fairly compact, as the geared part is only 5x5x7 studs! A couple of things are still undecided with this model, the first of which is how to activate the functions. Right now, the transfer case is actuated by mini LAs, which would mean that I would likely be using mini LAs to lock the front and rear diffs. However, there is the option to use small pneumatic cylinders, in which case the axles will be a little simpler to build (more on axles later). On the other hand, using pneumatics means integrating a pressure-regulated compressor and remote controlled valves (or a valve-pump combo), which could end up being bulky. I do have the option of manually controlling those functions, but what's the fun in that? The other undecided aspect is suspension. The Xterra I'm modeling after has A-arms in the front and leaf springs in the rear, so from an accuracy standpoint that is the way to go. On the other hand, 4-link live axles front and rear would be great for off-roading. The tradeoff with 4-link suspension would be space, as independent suspension in the front would let me cram the driveline components in front of the "firewall". TL;DR I've started on an Xterra, but I've got a lot of thinking to do... -
I'm back with my latest model, a lifted bugeye Subaru chopped into a ute! Subarute by VKTechnic, on Flickr First off, the features: Remote control drive with 3-diff AWD, central differential lock through a lever in the cabin, and fake boxer 6 engine Remote control steering with linked steering wheel Opening air-shock hood, doors, and liftgate, all with latching mechanisms Headlights, foglights, and taillights, with an in-cabin switch for foglights Fully adjustable seats, with under-seat lever to move seat forward and back Front McPherson strut and rear trailing arm pneumatic suspension Custom flags representing Axial (maker of the Ripsaw 1.9 tires) and Mighty Car Mods (the main inspiration for the car) Subarute by VKTechnic, on Flickr This model was a fun one for me. After seeing what Mighty Car Mods could do to a 2002 Subaru WRX wagon in less than 3 days, I wanted to take my own spin on the Subaru ute concept. The first main challenge was suspension, as I had to design a McPherson strut with drive, and the rear trailing arm suspension was completely new to me. I did have to compromise -- using CV joints in the suspension meant I could get everything compact, but the off-road performance tanked. Definitely a little disappointing, but I think I made up for it with all the other fun features. Subarute by VKTechnic, on Flickr Every opening feature of the model has a latch on it. The hood has an air shock, and can be released from the driver's side footwell. Door handles were based off an old design by Nicjasno (aka LPEPower), which I managed to slim down to fit within 2 studs of the door panel. The tailgate latch is probably the least realistic since it's activated from the inside of the bed, but I mainly did this to keep the continuity of the bodywork. Subarute by VKTechnic, on Flickr The seats were also something new for me, and it's an area I've struggled with in past models. I did manage to make these seats fully adjustable, with a lever under the seat to slide them forward and backward. Aside from that, the cabin also has a lever to lock the central diff, and a switch for the front foglights. Subarute by VKTechnic, on Flickr Overall, I'm happy with how the model turned out. I think I captured the bugeye look fairly well, and all the manual functions were fun to try out. Of course, it is disappointing that the model didn't perform too well off-road, but I can say for sure that my next model will destroy everything off-road! P.S. I did make a video of the functions, thought it would be short but it turned out to be almost 10 minutes. Enjoy!