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Posted (edited)

For the "Fast car competition" organized by BuWizz, I have done that:

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For this contest, you have to make a vehicle with suspensions, and do a video showing it doing at least one jump.

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Of course, the MOC must be powered by a BuWizz!

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For the steering, there is a servomotor. The driving is done by two L motors, with a 1:1.8 ratio. So the buggy has a correct speed, and enough torque to be driven on dirt, sand...

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It is fully suspended. The front is an ordinary system. But for the rear, I couldn't do independant suspensions (not enough compact) or a suspended axle (because as the motors are in the chassis, when you accelerate the axle tilts). So I done an "amost suspended axle". The liftarms thin 5L have an effect of anti roll-bar.

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I have tried to do a light design. Thus, the MOC weighs 460 grams.

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Edited by Anto

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Cool video !

Best of luck with the competition.

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Posted (edited)

Looks like great fun!
However, I must say it - poor gears in the drivetrain. :cry_sad:
Is this setup built in this way because of torque-protection of the U-joint?

Edited by HorcikDesigns

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Lovely build and scale!

Good luck in the competition!

Next time: take pictures before racing outdoor ;) your servo looks pretty banged up.. a good sign in my mind but not great for pictures :)

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Those slow-mo shots... :wub: Great little buggy, it's very fast, looks like a lot of fun! :thumbup: However, man, I feel sorry for those 8-tooth gears... They are pretty battered. Good luck!

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Awesome! T looks super fun! The only problem I have when I use a fast RC vehicle is the parts being beat up and dragged across the ground at high speed. Two of my buggy motors have scratches on the bottom from that. 

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I do admire the simplicity and efectiveness - at least on video it seems quite stable and it does not fall apart easily.

Excellent work!

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Annnnndddddd we have a winner!! lol

This is perfect - I'm sure just the vehicle Buwizz was describing in the contest. My favorite jump was at the 0.30 mark. Well done! :wub:

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Thanks all for the comments! :classic:

 

18 hours ago, HorcikDesigns said:

However, I must say it - poor gears in the drivetrain. :cry_sad:
Is this setup built in this way because of torque-protection of the U-joint?

Yes, I know... The problem is that I needed a gear ratio I can't get with less gears (except the three 8t): 20t/12t is too slow, and 24t/8t or 36t/8t is too high. So I done that, and with the position of the motors (to have something compact) I couldn't do better. It's not to protect the U-joint, it can bear more torque.

 

18 hours ago, Marxpek said:

Next time: take pictures before racing outdoor ;) your servo looks pretty banged up.. a good sign in my mind but not great for pictures :)

In fact, the servomotor was not damaged because of this buggy, but because of my RC karting. :laugh:

I though I could remove the dirt from the tires, but it's not so easy, and that is amplified on the pictures. I keep in mind your advice for the next time! :wink:

 

I have done a LDD file, you can download it on Rebrickable! --> https://rebrickable.com/mocs/MOC-14071/Anto/fast-rc-buggy-powered-by-buwizz/

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Brilliant little buggy. Good luck in the competition.

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Super nice, I also really like the styling with the minimalistic use of red and the minimalism overall in the design. You did a lot with only a few pieces, I like that. I like how you used only three white pieces (except the wheels) but that works really well with the white rims.

You could have used 36t - 12t instead of the 24t - 8t you used now, but that would have required a wholly different chassis around it, probably losing more than you'd be gaining by it. Another option could have been 24t - 24t and then swapping the 12-20 to a 20-12 in some way. But then the U-joint would have run 3x slower and hence needed to process 3x more torque, so that wouldn't be good either. I think this is the best setup possible in the limited space. And if it works, it works :classic:

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Those scratches add character!  Thanks for sharing.  It looks like you had a lot of fun making this.  Good luck with the competition.  

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