JoKo

Indeed MOCers are not the main target for TLG. Powered Up app is the best exemple. But that's why I only use ControlZ app. I think taking sets appart for pieces is the roots of Lego, but sadly it's not the way of the majority.

If I understand well the "crankshaft" of the fake engine was the only option at this size, could not be more "realistic"? I like the off-road wheels better but it looks like they don't allow full steering and suspension without rubbing against wheel arches. Do they?

That's cute! I like that you can even build it with C+ hub. Good job making it so compact and sleek!

Hi ! That's my second B-model for the Bugatti Bolide The DeltaWing was an experimental race car from 2011. It was triangular shape with very narrows front wheels, very close together. The idea was to race against endurance prototypes with a car having half the weight, half the drag, half the power and half the fuel. My model is mostly inspired by the latest closed cockpit version, as if Bugatti tried the same concept. Engine is weird, could not make a W8 as half a W16. So I ended with a V6 with a 2 cylinders row added vertically in the middle. Kinda half-radial 8 cylinders The steering was a challenge obviously because of narrow front but also because of the lack of straight gears. I had to improvise a lever-linked mechanism to bring the steering from bottom level to steering wheel level. The lack of friction-less pins doesn't help The body has the signature triangle shape with a cosy cockpit and a massive rear diffuser ( the real car had no wing, under-body downforce only) I'm happy with the way it looks and the global sturdiness. However the playability is bad: no HOG steering, huge steering radius (no diff does'n help), close to no ground clearance.

That's cute and boat's is unusual subject here. Is the mechanism only pendulum?

Yeah, thank you for hosting contests. I joined eurobrick for TC22 and it is geat building challenge which pushes us out of our usual themes, making us better builders!

I have to admit I am not into mixing Lego Technic and RC stuff. However the speed is impressive and the job done with chassis geometry and toughness is great! Have fun driving it flat out!

I had no doubt you'll like it my boxer-loving friend!

"Bravo" to everyone! And thanks for organizing contests. The theme was not in my usual themes of interest but I had a good time building and seeing other creations! Honored to be on the podium, thanks for your votes!

Quickly after the Batcycl release I wanted to build a hot-rod with these wheels and headlights. Triggered by @1980SomethingSpaceGuy's Cafe Racer I bought two batcycle, built one and started playing withe the pieces from the other. I tried for a while to build a motorcycle engine but was not happy with what I did. So I tore appart the batcycle and build a 8 cylindres engine. It was too big to fit at the front of a hot-rod so I made a rear-engine race car. 1960 was an era when rear engine was the way to go in F1, disc brakes also but skinny tires were still there and wings not yet. I kept the headlights from the hot-rod idea because I liked them. The engine has a unusual configuration. the cylindre blocs are offset by 2 studs to allow the pistons to do boxer-things. the front left piston do boxer action with the front right piston. And so on... If you know me you know that the new blue 12 teeth gear chain-compatible is a game changer for the valvetrain lover that I am. I couldn't help giving this engine a pair of overhead camshafts. Two cams per cylindre, dark gray for intake, black for exhaust. The main challenge was the lack of dedicated car pieces for suspension and steering. That's why there are no working suspension, decorative only. And the small number of pieces according to the car scale was a pain also...Because of 2xB model restrictions I had to be creative withe the structure. Some slightly preloaded assemblis may hurt the feelings of sensitive people like Pythagoras or Studio. I used 84% of the pieces (by weight) Features: - 8 Cylindres Boxer engine with basic valvetrain - 2 Chain-driven camshafts with 2 cams per cylindre - Ackermann (kinda) steering with ball-joint links - A cute smile! Ready to Race!

I d'rather like a jury voting than popular voting with undefined voting time at it is now.

Thank you! Yeah, the bugatti bolide is a great set for new pieces! I liked to learn how to use these little panels, they are really useful to avoid big panel gaps Yeah they are uncommon machines and I thought it was a good way to built a motocycle related B model out of a car. Thanks!

Hi ! This is the first time I try to make a B-model and I liked the challenge. I wanted to make a racing sidecar with virtual pivot point steering and a 4 cylinders fake engine in rear position. I was inspired by the LCR 1000cm3 sidecars from Switzerland. Because of the general asymmetry of a sidecar some things look odd. the pilot side has a symmetric fairing, seat and handlebar but the wheels and the engine are offset to the right. The dbg panel on the monkey side represent the fuel tank. compared to a real 1000cm3 it is way too short (or wide) because of pieces limitation but I think it looks pretty and fast!

Indeed that looks better than the original model. Maybe the wheels are a little too big for a café-racer but as minimalist scrambler it fits quite well. This set seems to be a nice pieces source for motorcycle MOCs Well done!

7: 10 11: 6 3: 4 2: 3 6: 2 8: 1

I finally took the time to make a presentation video:

Space Mosquito This is a tribute to the Lego Space Insectoids from the late 90's Technic functions: - 4 folding wings with nice cinematics and spring loaded lever - Rail-gun with rubber bands 6 shots semi-auto or one huge band - Steerable main thruster with cockpit controls (don't ask anything about physics, that's alien tech...) Detail functions: - Locked openable canopy - Two magnetic loading points - Ajustable parabolic antenna with claws (that's mean!) Video will be added soon

Nice mechanism to lift the cabin! If I understand well it's automated? and it looks very clean. I can't wait to see some hard terrain test to see if the diff-lock makes a difference.

I didn't design the real one, just the Lego version but I think I can answer that question, I have a little of kitesurf practice. Indeed the kite can pull vertically and so pull the side up. But when the kite is vertical above the boat (kite zenith) the angle of attack of the kite in the wind is kept minimal unless you want to take off. For speed sailing the kite is quite low over the horizon and the angle of attack can be increased for max traction and the rear foil is supposed to counteract the lift from the kite.

A coworker suggested painting the real boat harlequin. And yeah, It looks like a SR 71 seaplane that's not supposed to take off!

Hi ! This model is quite personal because I am currently working on the real one. It started as a joke at the coffee machine. It is a minifig scale 1/40 model of a boat meant to break the sailing world speed record. More about SP80 boat: https://sp80.ch/the-challenge/ The main proportions are OK but the shape of the front and hulls are limited by scale and minifig compatibility. Low number of pieces was also a constraint. So it's a toy rather than scale model. It features a Technic system that demonstrate the power module function: aligning the kite and the foil forces. It is of course simplified and approximate just to demonstrate the idea. It can also be disassembled like the real one. Main hull and beam hold together with technic pins and tiles. For now it's a Studio model and a mismatched approximate prototype on the mentioned coffee machine. Image 4 and 5 show the mechanism. Green kite line pulls the boat and the foil is kept perpendicular to this force. The red pivot point is offset on starboard. I hope you'll like it.

I have never touched Mindstorm and don't know much about autonomous tractors but plowing (or any other action) the entire surface of a field (carpet or garden) seems a good challenge for this kind of machine. Could be something like: forward 1m / 180° left turn / forward 1m / 180° right turn repeat x times If you can gear each axle with approximate ratio you will not have to loose much rpm and power from the slowed motor.

Very nice project! Honored to see a diff-lock in it. I would suggest to get the best from only one diff lock to connect it to the most loaded axle. And to get rid of the central diff. Driving one axle with each motor (maybe it's hard without moving one motor). Or even driving both axles coupled with 2 motors. It doesn't induce that much wheel drag and for an off road vehicle it's OK. If it isn't an option to move the diff-lock action to front axle let's say it's locking the axle the most likely to loose traction! Looking forward to see more! It's there to spin the yellow centrifugal mechanism which locks the diff when too much speed difference between the wheels There you'll have more info about it

Interresting idea mounting it close to the gearbox. you could event have a gearbox for the diff lock, it's not that more than disabling the lock By the way are you going 2WD or 4WD?

Hi! Nice to have evolution on this concept! You d'like a two speed gearbox with 3x speed difference between high and low gear? That would indeed be out of the system's capability but I think it's a little extreme without intermediate gear. With a closer gears 2-speed gearbox I think you can find the right ratio to drive the centrifugal device. If you have 4 wheels steering with high steering angle you will maybe need to slow down in tights curves. Not so far from actual off road driving. By my experience when the motors are under enough load to slow down, a loss of grip leads to wheel spin and motor speeds up, locking the system. And if you struggle to fine tune the minimal size centrifugal device, try with a bigger one. They have more options possibles and can have the sensitivity tuned with different shapes and locking obstacles.