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Showing results for tags 'servo steering'.
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Mini Rally Racer
z3_2drive posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Hello Everyone! I'm back with a nice little MOC that i built a couple days ago. I actually first built it last year but never had the time for pictures, so I rebuilt it from my memory. It has rear wheel drive via one buggy motor and 20t/diff gear combo. It has all wheel independent suspension-since I wanted the front and rear width to be the same, the rear isnt double wishbone. It's extremely light and has servo steering. All powered by one of my 10 volt batteries. I had to use some interesting bracing techniques in order to connect and strengthen the whole car with as little pieces as possible, but I couldnt find a simple enough way to brace the front suspension to the chassis so in a hard crash the front axle may come off. Pics: ^it gets quite dirty after prolonged outdoor use the front bull bar (same one from the 8048 buggy set) bends inward during a front end hit, so it definitely helps protect the car if it loses signal from IR receiver: In order for weight saving I used flex axles, which give a nice tight grip around the battery: Money shot suspension showcase ^when resting the rear suspension has neutral camber, when it is raised it has slight positive camber, but when leaning into a turn and it compresses, it has negative camber, which can actually help handling a bit: overall it has good ground clearance for its size, which allows for good performance on bumpy asphalt and light offroading, but for offoading it relies on wheel speed rather than low speed torque driving outdoors and through fresh rainwater puddles eventually collects dirt and water, which can get into places where you don't want it... ^but luckily dirt will fall of after a good shake once it has dried and water, as long as it is fresh rain/streamwater won't ruin motors/connectors, only pool/saltwater/grimy water will mess up motors, but I made sure the battery stayed dry And here's some burnout/drift shots: my new desktop background: ENJOY! -
RC Quad-Motor Rally Car Chassis
z3_2drive posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Hello! I'm back with another MOC, most likely the last one for a long time as I'm rapidly approaching a Lego dark-age of my own (college). This time around I'm finishing off my series of high-speed vehicles with a special rally-style chassis. It is my best handling version so far and it actually has bodywork (more of a tubular rollcage). Details: RC - featuring the custom electronics I've been using for previous versions. Link for those who haven't seen my setup yet. 4 Buggy motors for drive (2 driving each rear wheel, disconnected in the middle). Servo steering (normal Lego servo). 4 Wheel independent suspension - rear includes anti-roll bar and shorter top links while the front has caster and active camber due to shorter top link. Both axles have modified pneumatic cylinders acting as springs+dampers together. Extremely sturdy chassis with little to no twist (I tried hard to twist it from end to end, doesn't budge) plus sturdy rollcage that can be used to pick up the MOC. 3D printed wheels by efferman, as well as 3D printed spherical gear counterparts that act as really strong CV joints. The sturdy construction allows the suspension to work as intended, absorbing every bump. Here is the video: And now for a photo dump: Hope you guys like it! Sorry purists