Limga

That is enough for me, thanks:) Thanks for testing, now I will buy second RC motor for sure. However, if Roni answer whether BuWizz can power up to 4 RC motors, that would be nice.

Did you connect all 4 RC motors to one unit?

Nice ideas! I have just the same thought about steering with a few servos:)

Woohoo! Glad to hear it:) Is there any way to help or support you?

Nice catch! Congratulations:) You can make yellowed parts almost white again by putting them in hydrogen peroxide. If you cut fresh potatoes in the bath, the process will be faster (fresh potato do have ferments that accelerate the process of peroxide dissociation). I did it with parts of 8480. They did not become shining white, but they look much more clear:) About tyres: it seems like the tyres become softer after some years. I have four wheels from 5571 and 4 wheels from 8458. They all are very soft which makes them very suitable for truck trial:) Also, unique rims can be very useful.

Though having SBrick and Li-Po, I am very excited about this project. Going to support it the next day. I have some questions too. Will it be possible to use third-party's joysticks?:) Now it is possible with SBrick and it is really awesome, especially with fast trucks. Also, it would be very nice (but I am not hoping for that) to make it compatible with SBrick. Many have SBricks and it would be nice to connect SBrick to the BuWizz having altogether 8 channels. And controlling it with one app, of course. Dreams:)

I tried it in LDD. It fits, but yes, it is too short for the wheel hub.

When I read the rules for the first time I had the same thought:)

Here comes video! By the way: the first lego video I made:)

How does the front suspension work now? Does it turn normally? It seems to me, that pivot point should be between two towball joint for correct kingpin inclination.

It would be useful if the battery pack didn't have current limitation. Every port of SBrick can provide up to 3A and battery pack/LiPo can provide only up to 3A. Maybe there is a point to power up SBrick with two battery pack, but I think it would be better to use second SBrick with second battery pack id you want to power up two RC-motors (as it did RM8 in his Baja).

Hello imurvai! Thank you very much for bringing us such wonderful way to control Lego:) I tried februar88's MOC with Game Controller and now I'm feeling envy for Android users:) Is there any possibility that you will make version for iOS or it is time for me to buy cheap suitable Android phone?:)

Hello everyone! I want to present you my MOC: the trial truck "Asfaloth". The goal was to make a trial truck on Silver Champion's wheels with funny appearance of massive silver supercar:) I choosed these wheels because of their softness, thickness and the non-zero offset which made it possible to hide portal gearing inside the wheel. The chassis is almost identical RM8's old trophy chassis. The main differences are two steering axles designed by me, different position of XL-motor and changed position of shock absorbsers. There are XL-motor (geared down 1:3 or 5:9) for propulsion, M-motor (1:5) for steering. Model uses LED lights, V2 IR receiver and Li-Po. Model participated in competition in Moscow on 02.04.2016. Due to it's wheels it showed great results: I got second place in "trial" (without differentials) category. If I has been a little bit more careful and lucky, I would be able to get the first place, ha-ha:) However it was very funny to drive that model and there was situation in final when it was moving only on front wheels standing vertically. I hope, RM8 will show you soon that moment on video. Note that 20- and 12- bevel gears in the axles were changed to knobs before the competitions. However, with 20:12 in the axles it still has crawling cabalities in addition with funny speed:) Video is demonstrating the first try (there were two races and the models with best results made into final), that was the fastest race of both categories. Sorry for vertical video, my sister made it with phone. As I said, high-quality video will be on RM8's channel soon.

The truth is that it doubles the maximum current but not voltage, huh?:)

Hey, it is a good idea to make Lego gamepad case for mobile phone to control MOC with SBrick:)

U-joints on the right front wheel are connected in a wrong way. You should rotate one of them on 90 degrees, so that vibrations from U-joints will compensate each other.

Thank you. I read about lithium batteries and looked at their discharge curves with different current consumption. It really looks like they are the best if there is no need in recharge and if you can afford them:) I will use them on competitions. It isn't so simple. I'm sorry but I think that you are wrong. Power supplies, such batteries are, do have an internal resistance. When batteries have to give more current than they can give at, for example, 1.2 voltage level, the voltage is decreasing down to, for example, 1.0. Different types of non- and rechargeable batteries have different properties. For example, rechargeable NiMH battery can provide 2A current at 1.2V (for example) but some even cheap batteries with 1.5V won't even work if the load requires 2A current.

I have some questions about batteries too. May I ask them there?:) Li-Po have very stable voltage, that can hold the load without much decrease. Six usual AA or AAA batteries provide about 15 percent more voltage and, therefore, power. However it seems like the voltage provided by six usual batteries can decrease significantly under load. There is coming competition in Moscow and I wonder whether it is better to use Li-Po or usual battery pack with non-rechargeable batteries. Also I heard that there are some expensive types of non-rechargeable battery, that have very stable voltage during their work, does anybody used them?

Well, it sounds expensive... But what about four buggy motors? They will consume a lot of energy, but the wheels could be mounted on them easily even with some reduction. In my opinion, power of four buggy motors will be enough to carry four battery packs and it will be great fun to play:)

I would recommend only a slightly wet cloth to remove dust and nothing more. You need Power Functions Extension Wire. It has a suitable connector for your motor on one side and is compatible with Power Functions. Power Functions is the system of electrical Lego components that allows motorization and remote control of Lego models.

Well, I'm still thinking that it is equivalent to U-joint. The missing cross-piece in "CV"-joint is substituted by towball joint. If nobody agrees with me, I will have to refer to math and write some movement equations of both joints

Two of these joints are constant-velocity joint (so there is CV-joint between differential gear and rear wheels in 42029, for example), but one of them has the same cinematics as an U-joint. Look how parts are connected between each other, the principle is the same as in U-joint. I will make a video demonstrating "CV"-joint's non-linearity.

Do you say about this joint? TLG call it CV joint, but in fact it and U-joint have the same principle, so it is not correct to call it "constant-velocity" joint.

Thank you for answer, now I'm not scared to put 94 tyres on Power Puller wheels. Also, I measured up the diameters of Puller's and 56's wheels and they are the same. Power Pullers just have two bigger rims on both sides. I want to use PP wheels because of their offset and I thought that you used them by the same cause. But you put them in a way the pivot point is even bigger than on 56 wheels. I know that standart portals don't fit in opposite way. But will it perform better with custom portals and lower pivot point? P.S. Didn't know about your channel, watching now a video by video, very useful and interesting, thanks:)

Hello everybody! First time to post here:) Sorry if there are mistakes, I'm not native English speaker. Has anyone used Power Puller wheels with different tyres? I want to build light crawler on Power Puller wheels with the relative lightweigth 94.8 tyres, but I don't want to strain the tyres unless it gives good results. Did anyone had such experience?