Zerobricks

You need 3x BuWizz 2.0 bricks, here's the purchase link: https://buwizz.com/?ref=8

Yes, power curves and especially time ramps. Using a small ramp of like 0,5 seconds greatly reduces a chance of current spikes.

Wow, simply amazing. Good luck with the competition.

Impressive, really well done. Looks as good as an official set.

We are very close to the next app update which will add many more steering parameters options including the calibration power and duration. The new update will laso feature FW updates, that is why it's taking a bit longer than usual. Regarding BuWizz 3.0 cutting off, the battery has a 7 A overcurrent protection. In normal use two BuWizz motors can draw up to 3,5 A, but there are cases where you can draw even more when you are quickly reverseing a heavy model for example. Once the current protection on the battery is triggered, you simply have to plug in the charger to turn BuWizz 3.0 back on. We will be adding an option to limit the currents in FW and app in the future to reduce this scenario from happening.

Unfortunately I don't know the exact drivers, you can try writing an E-mail. I already had an idea for this feature so you can select what happens after you loose connection and how long is timeout. This way you can keep all motors running, brake, coast, etc for a given timeout. Would be very useful for preventing crashes or simply to keep running trains after you lost connection. But there's only so much a small team can do at once.

No idea, I haven't been testing any thrid party motors.

The more motors you are using, the more the battery voltage drops.

The feet, there are new Light Blusih Gray banana gears in smaller form.

Ankles, not knees

The new UCS 75313 AT-AT seems to have new, smaller half or quarter sized "banana" gears, they are used in the ankles. Also Defender's rims in Light Bluish Gray!

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Great idea with the wheel suspension. It might steal the idea for a supercar or such where you need low travel and high force, and you get rid of the issues with CV joints, etc...

You can just try charging it, that should bring it bacl online.

Interesting design, glad to help with the inspiration. Lots of functionality in a small model, though it can be improved, so it's more reliable and more stiff.

They were steering on a spot, if you drive the car a few cm, they wil return to center properly. Also at that time we didn't have an option to adjust the PID parameters yet for a more responsive steering.

There is an idea, but haven't managed to build it physically yet. The car uses PU L motor for steering, it is used in servo mode, so it works normally like one with return to center. All the small details are really part-intensive, especially the studded details of the wheel arches, tiles, curved parts and plate sused in the seats, top of the bonnet, etc... it all adds up. The car uses PU L motor for steering, it is used in servo mode, so it works normally like one with return to center. BuWizz 3.0 allows you to use any PU motor with a built in encoder like a servo, just like official lego PU sets.

Yes, because the wheel arch is actually from the 42125 and is therefore smaller than usual at this scale. This is why I used plates in order to keep the wheel from touching the bodywork when steering. All the moving parts were lubricated during assembly. Even with that the wheel hubs turned out to be weak links. The reason the wheels failed off in the video was not in the wheels, but hubs simply failing when being pulled out at such high speeds and heavy load. Thank you for the praise. I was fully aware I was lacking in my aesthetics skills, so for last year or two I worked hard on improving them, as you can see. Removing the weight would reduce friction and increase performance, a bare naked model could easily reach 50 km/h with proper gearing. Yes, they are because the wheels are actually geared up and besides the speed we also require sufficient torque to overcome the friction and air resistance. Of course the model is not designed to constantly drive at such high speeds.

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:

Also what matters is where you attach the steering arm to the hub. If you attach it at the same level as the upper arm, than the slight tilt of the hub will have a zero affect. If you attach all the way on the height of the lower arm, than it will matter a lot.

Also the PF XL and PU XL motors have totally different output speeds/torque levels.

If it was possible to use normal PF motor as servos, Lego wouldn't have released a dedicated PF servo motor and a new generation of PU motors. We are avare of the issue and we are preparing the FW update for it. We are also planning to add features simillar to BuWizz 3.0 such as rename, shake to wake etc... with the same FW update, but it takes some time to implement and test all these features.

Thank you for these photos, it's interesting that this motor doesn't seem to use the planetary gear reduction unlike others.

I'm glad the idea helped you with your issue Correct, the shock absorbers have no room to move sideways. I'd place them on the upper arm.

They look cool, well done.