4x4 Truggy (4x buggy motors)

[Lixander]

Welp, here is one of my first MOCs I have ever made (about the 4th in general and the 2nd Technic one).

I mentioned this model in the topic of the Lego Technic Tamiya Neo Fighter truggy, the Neo Fighter being by far more ”practical”, with 2x buggy motors but still being 4x4. I decided at the time of the Technic Tamiya truggy that the 4x buggy motors truggy will remain a prototype, but a german said that he reached 50 km/h with it with only 1x BuWizz 3.0. He is probably lying though, but considering that my parts for the Tamiya truggy wont arrive, I said to give the old 4x4 buddy a try.

So here I am, with a 1kg ( 1097g without the battery hubs) 1:12 Lego truggy that needs other 3 buggy motors.

As I said, this 4x4 truggy has 4x buggy motors and 1x servo-motor. It uses 4x hard 6.5L shock absorbers for the independent suspension in the front and solid axle suspension type at the back. Also, the body-work is detachable.

 

Edited January 31, 2024 by Lixander

[Fluwoeb]

@Lixander, 

I really like your build! It is not overly complicated and puts a lot of power into a pretty small size build. It must have a good power-to-weight ratio, something that @Zerobricks definitely applies to most of his builds...

[Lixander]

23 hours ago, Fluwoeb said:

@Lixander, 

I really like your build! It is not overly complicated and puts a lot of power into a pretty small size build. It must have a good power-to-weight ratio, something that @Zerobricks definitely applies to most of his builds...

Thanks!
The truggy has about 1 kg without the 3x battery hubs (I put 1x hub for the servo and for each 2x motors there is another 1x hub).

So it has some punch, but I never had the space to test it properly. Plus, there are a few problems, like the roof pops out, the front could detach at impact and the front connections to the wheel hubs are a bit loose and might snap easily.

Edited October 4, 2023 by Lixander

[Teo LEGO Technic]

Foarte tare!  Do you have any videos of it driving? Also, I can't really see from the photos what parts you're using on the front for the driven independent suspension, is that the old CV joint? Did you have any issues with it popping out under the power of the buggy motors?

[amorti]

2 hours ago, Teo LEGO Technic said:

driven independent suspension, is that the old CV joint? Did you have any issues with it popping out under the power of the buggy motors?

I think the CV joints will be fine.

Those front motors look a bit light...

[Lixander]

4 hours ago, Teo LEGO Technic said:

Foarte tare!  Do you have any videos of it driving? Also, I can't really see from the photos what parts you're using on the front for the driven independent suspension, is that the old CV joint? Did you have any issues with it popping out under the power of the buggy motors?

Mulțumesc! ;))
Nope, I usually don`t take videos :/

Until now, I used the Technic Universal Joint 3L for the front and it popped out from time to time. Now I use the old CV joints that you asked about, but I didnt tested them yet.

1 hour ago, amorti said:

Those front motors look a bit light...

Yup, I had to borrow 3 motors, because out of 4 motors, I burned 3. The front ones had thicker hobby-grade wires, so it was better to remove the ”real” motors from the cases.

[Lixander]

Approaching the final version. I still have to test it properly outside, but the main problems seem to be solved.

You can find the new digital file on Rebrickable

Edited December 27, 2023 by Lixander