Aurorasaurus

1:6 scale when?

I like the paint job, but I think it might look better with bigger wheels, have you tried them? Also, I've never seen cv joints break like that before, very interesting! Thank you! Upon looking up the Gemballa Marsien, I do see the resemblance!

Since it's nearly the weekend, I might find some time to video this one. I recorded its top speed without a body at 20.2km/h on bumpy concrete. I'm using the slow output of a buwizz motor geared up 24:12 per rear wheel. The body is kinda disjointed, the rear is inspired by RX7's with ridiculous body kits, while the front is inspired by Porsche 911's. Im also using 3d printed wheel arches, since I don't own those parts yet. I'd be glad to answer any questions.

I think I'm onto something with this... more coming soon...

A minifig scale elevator, or an extendable drawbridge. Or both!!

I think it might be to ensure a more perfect finish on both sides without the need for sanding or supports?

It's been a bit since I've shared any updates on what I'm working on, and I finally decided to sit down and make a post. I've built another 6x6 chassis, this time using 28t bevel gears for every wheel instead of 12t gears, meaning the whole thing is a lot stronger. Now I'm just waiting for a nice day on the weekend to take it out and test it some more. Until then, I have some photos and a video from testing the chassis. Some photos of the "finished" model It even has seats and a steering wheel! After seeing JLiu's race buggy, I wanted to make my own, with a larger focus on performance. With the big RC tires you can see in the left of the first photo, I was able to get it up to 20 km/h on the pavement outside my house. I think it could go faster on a warm day on smoother ground. I'm using 2x buwizz 2.0, and 2x CADA buggy motor, hard couple, wheels driven from the slow output. However, this model is more about being fun.. Soo, I tried some silly ideas out on it. I also tried 3d printing a tire from 95a TPU, just for fun. I'm quite happy with the tread pattern, but overall everything is too think so it is very stiff.

You're in luck! I received another Buwizz 3 and 2 motors today, so I'll gladly build this and test it out. I dont have the same tires you have, or the 3d printed frames and bearings, so the performance might not be perfectly representative.

So, I have a slight problem with the app and was wondering if it affects anyone else or if there's a solution I'm not aware of. When using a technic hub, I can run set a port to a servo motor type and then set the servo range to up to 180°. This is perfect for me. The calibration doesnt go as far as it should for proper calibration, but that actually isnt a problem because of the ability to adjust the base angle. The issue I have is that I cannot set the servo range when using a Buwizz 3.0 unit. Im using the Buwizz units port 1, and I updated the firmware on my buwizz units a few months ago. My phone is a samsung S23 FE running android 14. Im using the 7th jan 2023 update version of the app (latest). If I should provide more information, please let me know!

I always like the way you present your videos, they make me smile. And my two cents about the tank thing: somewhere I heard that when the british were developing tanks, they put it under the guise of new water tanks, hence the name. But I have no source for this and would agree its probably just a story someone told me as a kid.

If you want to build cars, I think the 42160 Audi is a good parts pack as it has good wheel hubs and differentials. As for the different electronics, C+/Powered Up motors all have built in rotation sensors and as such can be used as servos, or as regular motors, which is quite powerful. But C+ has some disadvantages, you cannot stack the motors plugs so you are limited in the amount of motors you can use. Power functions has the advantage of smaller motors and stackable plugs, but because its discontinued now PF motors are more expensive. Also, the PF servo is rare and the clone PF servos don't have proportional control. Mindstorms is a different beast, which I haven't experimented with. The official Lego options for controlling and powering your models are not very good. You can use the brickcontroller 2 app for a better way to control your models, and Buwizz is a premium option for getting more power in a smaller footprint. As for buying parts, bricklink is a good place to go for real lego parts, but if you're on a tight budget clone parts have got remarkably good recently.

In my experience its fine so long as you brace everything around it well. Thanks for the concern though!

This blows me away, I'm really impressed, and can't wait to see the end result. Meanwhile, I've come up with what I consider a more desirable way to get caster angle in driven front suspension. I think it's better than what I was doing before because its simpler. And with some more work should prove to be stronger as well, as it uses mini turntables for wheel hubs. I got the idea to use mini turntables and 3d printed rims from the buwizz daytona mod. https://bricksafe.com/pages/Aurorasaurus/miscellaneous/turntable-hubs This is just a proof of concept for now, but it's exciting me. I'll probably use longer suspension arms and the slow output tomorrow night.

https://bricksafe.com/pages/Aurorasaurus/cada-servo-internals I cant make heads or tails of it, as I know nothing about electronics, really. Hopefully someone who knows more can compare it to a real lego one, or at least photos of one. I dont quite want ro risk breaking my real lego one just yet. Sorry for not embedding photos like I usually do, I'm on writing this on my phone. Additionally, I tried the stacking some non branded fake servos on a buwizz motor plug and didnt get proportional results like I found with the cada motor.

I'm going to take it apart on the weekend, so we'll see. I think it has more than 3 places.

Well, I got the motors now. Sadly the servo doesnt seem proportional with buwizz 2.0, at least fully, but the replacement buggy motors seem pretty good. Oddly, when I connect the servo on top of a lego PF extension lead connected to a buggy motor the servo behaves as though it has proportional control, so long as the buggy motor is running. I'm using brick troller 2 app. Same thing when connected on top of a cada buggy motor. When connected under a cada buggy motor, the servo gains an extra spot at ~45°. Under a lego buggy motor it behaves fully proportionally. When connected on top of a real Lego servo, neither work proportionally, while the Lego servo normally does work proportionally. I also found the same results using the buwizz app.

I suspect it'll be a while before I receive them, sorry. Still haven't received an email saying its shipped. Though, shipping to my country is usually very slow anyway.

You have my interest, could you share some photos here? I think this is a fitting topic.

Its so silly, I love it

So, my most recent endeavor has been an AWD trophy truck, inspired by Madoca1977's trophy truck. This build only stayed assembled for 2 days, because I wasn't satisfied with the handling.

I'd think at that scale with 2x buwizz motors you could gear up the buwizz motors rather than down..

Another thing, this might explain the curiously low price of the 42160 Audi.

Odd... some people were saying it was proportional, but maybe only with some control sources? I'll test it with Buwizz 2, anyway.

Just purchased 2 CADA buggy motors and 1 CADA servo, I'm excited to see how they compare to real Lego electronics, and Buwizz motors.

Or a splitter for powered up plugs, or maybe its not powered up...