[WIP] - 4WD RC Buggy

[domik]

Hi, some time ago I made a post about a 4WD "engine".

I did want to try to make a buggy with it, but I realized that it will be better if I just buy 2 more L motors and did 4WD with 4 PF L motors instead, becaouse with that "engine" there would be so much friction that I think it wouldn't make any sense to do it.

So here is my progress so far:

I love how the rear suspension turned out, but the front isn't that great. The steering "bars" are flexing a lot and thus allow the wheel hub to rotate when the steering rack is still. Sorry if these images are hard to read.

And probably the most important thing. The springs aren't strong enough to handle the weight of the car! I tried to attach the black ends a stud lower, but that way it's practically no difference except for that the wheel's suspension is a bit higher, which means less suspension travel and the body is closer to the ground. Here's a quick video of the suspension:

I don't even know if it's even possible to do a good front suspension with these 6,5 stud long springs, and I'm considering buying the 9,5 stud springs.

You're welcome to comment and have a nice day!

[Aurorasaurus]

That chassis looks awfully familiar...

Will you run it on 1 or 2 buwizz units? I only see 1 in the photo, and 1 will struggle a lot to power 4 L motors. I built the Greyhound using 2 buwizz 2.0s (admittedly mine are old now) and it was really lacking in power.

Maybe you could use the new really hard springs like from the daytona, mclaren, peugeot, etc.

[domik]

  On 4/22/2025 at 9:11 PM, Aurorasaurus said:

That chassis looks awfully familiar...

Will you run it on 1 or 2 buwizz units? I only see 1 in the photo, and 1 will struggle a lot to power 4 L motors. I built the Greyhound using 2 buwizz 2.0s (admittedly mine are old now) and it was really lacking in power.

Maybe you could use the new really hard springs like from the daytona, mclaren, peugeot, etc.

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I did learn a lot from the instructions to the Greyhound, but I have never built it becaouse I don't have enough bricks and I don't like such big models

As for the 1 Buwizz, I will run it with two units, but for now I've driven it on rough terrain with 1 Buwizz and it ran very well and the battery didn't seem to struggle. Maybe that's becaouse I've got one of my rear motor's polarity inverted so that I can run them on 1 port.

[Aurorasaurus]

  On 4/23/2025 at 4:58 AM, domik said:

I did learn a lot from the instructions to the Greyhound, but I have never built it becaouse I don't have enough bricks and I don't like such big models

As for the 1 Buwizz, I will run it with two units, but for now I've driven it on rough terrain with 1 Buwizz and it ran very well and the battery didn't seem to struggle. Maybe that's becaouse I've got one of my rear motor's polarity inverted so that I can run them on 1 port.

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Aha- it really is a beast of a machine with a lot to learn from.

Two motors on one port should just mean each motor gets half the power from my experience... is your buwizz pretty new? Mine are from 2019 or earlier I think. Anyway, cool project, I hope you get something you're happy with at the end of it.

[domik]

  On 4/23/2025 at 6:41 AM, Aurorasaurus said:

Aha- it really is a beast of a machine with a lot to learn from.

Two motors on one port should just mean each motor gets half the power from my experience... is your buwizz pretty new? Mine are from 2019 or earlier I think. Anyway, cool project, I hope you get something you're happy with at the end of it.

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I actually got into buying buwizz just a few months ago, so yeah, it is pretty new.

The downside to learning just from the greyhound is that I don't know nor see any different way to do some things but I'm okay with it. And I didn't ever think of that when I do this 2 motors on 1 port thing it gives half of the power to each motor, and I haven't really noticed it when driving. Thanks!