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[MOC] 1:8 Spania GTA Spano motorized hypercar
Zerobricks posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
I present you the most accurate, functional and highest performing supercar I've ever made, the BuWizz GTA Spano: The main goal behind this scale version was to be as faithful to the design and configuration of the real GTA Spano as possible while maintaining a high degree of performance and functionality. This 1:8 scale model car has been designed, developed and manufactured in close collaboration with Spania GTA and has a total of 3,880 LEGO pieces, ten BuWizz Motors for propulsion, five motors for other functions and five BuWizz 3.0 Pro controllers, which allow it to reach a maximum speed of 36.5 km/h, a new world record for such a heavy and accurate model. It features the following functions: 10 BuWizz motors used for the rear wheel drive with vector control 1 PU L motor used for steering and rotating the steering wheel 1 PU M motor used to lift and tilt the rear spoiler 1 PU M motor used for the fake V10 engine 2 PU M motors used to open the doors Full independent suspension on all wheels Opening hood, engine cover and the rear trunk Today I’m going to go a bit deeper into the design process and technical details of the model. First in order to achieve the required level of realism I imported the manufacturer’s 3D file of the car's body in LDD and used it as a reference, here in blue: As mentioned before, the power is supplied by 10 BuWizz motors which use the outer outputs geared up using 40 and 24 tooth gears giving a 1.67x gear ratio on the rear drive wheels. Without load, the wheels can spin with up to 50 km/h. Power is transmitted to the rear drive wheels using the new heavy duty CV joints. To support so many motors and BuWizz bricks, the rear axle was designed to support a weight of over 2,5 kilograms. Here the shape of the BuWizz motors was of a high advantage, since you can easily stack them on the same drive axle. As you can see on the following image, the rear axle is one of the densest; most interconnected and complicated parts of the whole car. The front axle is designed to feature a positive caster angle, which gives the model additional stability when driving at high speeds. The steering uses double steering links in order to reduce the play of the system. A single PU L motor steers the wheels and the steering wheel. Along with the 3D model of the exterior, I also used the 3D model of the interior to design…well, the interior. I took great care to model the seats so they are in proper scale and very detailed using a combination of studless and studded bricks. For highly accurate details, custom stickers were used for the gauges, central console and of course the logo: As with the interior, the engine bay also uses a combination of studded and studless parts in order to match the real one as close as possible. I also used tiles in Light Bright Orange color to represent the space grade gold foil heat shield of the real car: The wheels are custom elements which I personally designed and 3D printed. A big challenge was to design them in a way to be accurate to the original source, yet strong enough to support this 4+ kg model at speeds over 35 km/h. With all the mechanical and functional parts completed, it was time to create an accurate representation of the bodywork. As mentioned before, using the 3D CAD model came really handy in capturing all the organic shapes and curves of the original model. Here are some highlights: Analog to the real car, this representation also features a lot of opening surfaces. The doors and the rear spoiler are motorized while the front boot, rear engine cover and the rear trunk can be opened manually: To summarize, the whole project took some 6 months to complete from receiving the 3D files to the speed-breaking final version of the model. For me, this was a really nice learning experience and I’m proud to say it’s one of the best models I’ve designed so far. If you are interested to know more about not just the model, but also the cooperation between BuWizz and Spania GTA, please check the following video: