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Hello everyone, I'd like to share my latest MOD: Koenigsegg Agera RS1 This car is one of my favorite road-going super/hyper/megacars, and therefore I decided to build it. To me and many others, Koenigsegg is a very special car manufacturer: It was founded in the nineties by Cristian von Koenigsegg, a man without any engineering education background and budget. On top of that, all Koenigseggs are handcrafted and are produced in limited quantities. I like the RS in particular, beceause it is IMO the most beautifull Koenigsegg and it holds the top speed world record. This car is not fully designed by me. @Pvdb build the Koenigsegg one:1 more than two years ago. The RS1 and One:1 have very similar Bodyworks and since Pvdb nailed that on his One:1, i decided to use his bodywork as a shell around my disigned chassis. In addition to that, I also used his door meganism, beceause I could not imagine me designing a better one Specifications: Dimensions 59x27x15 Studs Weight: 2600 g Estimated parts quantity: 2500 parts Powerfuntion elements: 2x PF AAA batteries, 2x PF V2 reciever ,4x PF L motor, 1x PF Servo motor, 1x PF M motor, 2x PF 50 cm wire The RS1 is basically the same as any other RS, but it has the one MegaWatt engine upgrade. The RS1 is specced in white with a black center stripe and it has many blue accents such as the interior, skirts, spoiler, diffuser and front splitter. Many of those parts of the RS1 have just a very thin stripe of blue painted on it. This means you can not replicate that with regulare LEGO parts. Stickers seemed like the only solution, but at some point the idea to use rubber bands for some accents popped in my mind. I only used this trick in the front splitter. Features: Easily removable Roof, like the real car Openable front trunk and engine bay Motorized dihedral synchro-helix actuation doors, Powered by a PF M motor Front double wishbone suspension with negative caster angle Rear triplex suspension with double wishbones Steering with working steering wheel, powered by a PF Servo motor Propulsion with working V8 engine, powered by 4x PF L motor I wanted both doors to be opeable by just one motor. This meant I had to make selector for wich door is connected to the motor. I had some free space in the center tunnel, so I decided to use the handbrake as a selector. Just behind the front wheels there is a driving ring wich can engage in two different clutch gears. Both clutch gears are connected to different doors. The motor and this meganism is placed underneath the trim. Here is the full 'transformer mode'. The front trunk and engine cover can be opened manually. If you look closely, you can see the battery and The L motors behind the seats. The recievers are placed behind the rear axle. Replicating the triplex suspension was for me a 'must have' on this car. It consists of two inclined shock absorbers and a horizontally placed pneumatic cilinder. The pneumatic cilinder is definately the most realistic looking way to make the central shock, but it is not practical. It offers resistance when extending and retracting, so I mounted some springs behind it to ensure that the model doesn't sag. In addition to all of that I also put some links on the suspension system. They are only there for an aesthetic reason though. finally, a video demonstration. Enjoy! Comments and questions are welcome! -
Well, I didn't update the WIP, and I ended up nearly two months behind my prediction, but I've finally finished it! And as far as I know, this is the first large-scale TECHNIC model of this car published online! The real Koenigsegg Regera is a groundbreaking "megacar" featuring a 5-litre V8 and three electric motors for a combined 1,479hp (1500PS). But it has no gearbox. Instead, there is one electric motor for each wheel, plus another electric motor coupled to the V8. The electric motors have instant torque and so the car doesn't need a gearbox to reach 250mph in 20 seconds! So, the full list of features: Remote-controlled drive - top speed is around 8mph Model of the real car's drivetrain Full independent suspension Castor angle on front axle (this is really important - you'll see why later) Triplex anti-squat bar on rear axle Adjustable camber angle and suspension stiffness for all four wheels - each wheel can be adjusted independently Synchro-dihedral doors Raisable rear wing Opening rear hatch to reveal "engine" bay Cabin with two seats, floor and steering wheel The drivetrain starts with a Large motor and a Medium motors (using different gearing). They are hard-coupled, but the gear ratios match very well and the EV3 can control the power it sends to each motor to make sure they aren't forcing each other to speed up/slow down. These motors drive a differential, with one Large motor on each side of the diff, just like in the real car. Then each output is geared up 1:9 to give the required speed - it's kind of a reverse portal-axle. Since the car isn't too heavy (it's about 1.4kg), the bevel gears aren't stressed that much, even with all this gearing up. I made a simulated dyno graph showing wheel torque and power with wheel speed in mph. This uses the official LEGO specifications of the motors and assumes no drivetrain losses: The front suspension is rather complex. All the adjustment controls are shown here: Now, you may have noticed there is NO steering rack. This is deliberate because it allows me to have an extra motor for driving. Instead, the motors on either side of the differential run at different speeds to steer, rather like a tank or castorbot. This is why it's so important that the castor angle is high. The top wishbones are able to slide in and out by 1 stud to change the camber angle. Just in case you wanted to put stance on your £1.9m megacar. The suspension uses both a torsion bar and a conventional shock absorber. The torsion bar's attachment point can be adjusted with a worm gear, allowing the suspension's stiffness to be changed. The rear suspension uses the same shock/torsion bar setup, but with an extra shock absorber between the wheels. This is what Koenigsegg calls Triplex, and it allows softer anti-roll-bars to be used (on this model there are none). The rear opens up to reveal the rear suspension. You can see the 24-tooth clutch gears here - those are to keep the rear wing in position. The doors are one of the most fun parts of this build. The doors slide forwards, outwards and rotate, all at the same time. They reveal the cabin. Unlike my previous models where the cabin is made a little smaller, the cabin in this model is proper-size. The aesthetics were very difficult. Because the front was so low, I decided to incorporate the suspension wishbones into the bodywork. I decided to exaggerate the front bumper, since to me that part of the real car stands out. I don't have any flexible axles, so I used pneumatic hoses for the windscreen. Since the roof's dome shape is very awkward to build, I decided to build it without a roof (all Regeras have removable roofs)! The side air vents don't widen enough towards the rear wheel - they look more like those on the Agera and CCX. Unfortunately, I don't have the right shapes of panels to make the vents properly, so I had to use a little artistic license. The air intakes on top of the car (behind the seats) stood out to me, so I made those prominent. Some have said it looks a bit like a 918 or Carrera GT. I also decided to exaggerate the rear diffuser - it looks almost Lamborghini-like to me (maybe a Veneno). And for some reason, the whole thing conjures up images of a McLaren F1 Longtail - I'm not sure why. But I guess if you combine the F1's speed, the 918's hybrid innovation and the Lambo's flair and doors, you pretty much have a Regera. Wow, that wasn't intended :P. Finally, here's a video I made. You can see a time-lapse of the building process, the suspension in action and the door mechanism exposed! I compose all my own music for videos - I hope you like it! -
I everyone, I start a WIP topic to show you frequently my progress on the Bugatti Chiron. Here we are. I wanted to create a new supercar (or megacar) before I finished my dual clutch gearbox. I love Bugatti brand and the new Chiron is so beautiful so I decided to create and design this car in Lego. I don't have finished instructions of the gearbox because it's very long :( All the features attended : A 7 speeds + reverse sequential dual clutch gearbox ( You can't see it on the picture because I'm working on the instruction) It's placed under the w16 engine Variable hight suspension on the front and on the rear Working pfs direction 4x4 transmission Working spoiler A manual gearbox to select between two rc functions (move the spoiler or move the suspensions) A global clutch to disconnect the car from the 4 L motors pfs. Typically ti will be possible two switch between a manual and a RC mode A hog for the manual mode Manual doors and roof I will add the real specifications soon. So, what I've already done now: The new dual clutch gearbox Rear axle Front axle Under chassis A mini functions gearbox 2 speeds W16 realistic motor The global clutch transmission I decided to begin the global design of the car because it the most difficult to create IMO just after the working transmission :) When I will be satisfied by the design, I will add the missing features and add others maybe. I think It's the best way to build a supercar. If the design is bad, even you have the best mechanic created, nobody care. I choose blue obviously ;) I've already ordered a lot of blue pieces on BL. Stay tune and do not hesitate to comment ;)