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I usually don't really post much of my work here, but sometimes I'm too proud of a certain model... Like this one.

Designed in colaboration with a Slovenian GM racing team, I present you my interpretation of a 1:10 scale Ford Fiesta RS WRC Rally car.

The realized functions and features are as following:

  • 4x BuWizz motors for all wheel drive - one for weahc wheel, powered by the outer output
  • 1x PU L motor for steering
  • Independent high travel suspension on all wheels
  • Working steering wheel
  • Powered and Controlled by 2x BuWizz 3.0
  • Inline 4 cylinder engine driven by the front motors
  • Opening doors, bonnet and rear hatch - the rear hatch usues shock absorbers in a bi - stable mechanis to keep it closed or opened
  • Custom 3D printed wheels for 62.4 mm tires
  • Detailed interior with a rollcage and bucket seats
  • Built out of cca 1650 pieces

As usual in such projects, I use a 3D reference model which is imported in LDD in order to create the most accurate representation:

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Here's the final virtual model - ready to be realized from physical bricks:

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You can see one BuWizz 3.0 under the bunnet in the front, powering the front wheels and the blue cylinders (half pins) of the inline 4 engine:

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Rollcage is designed with a mix of liftarms and links and it is actually structural. You can also see the second BuWizz in the rear:

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Anotehr view of the opened up model:

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Bottom view, showing layout of the motors - Front motors are just behind the grille, it was a really tight fit:

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Once the digital model was done, it was time to build it from real parts, 3D print the wheels and apply custom stickers. Here's the final result:

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I'm really happy about the shaping, there are almost no staright lines, almost all the panels are at an angle, for example the curved 3x11 panel above the rear fenders:

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As mentioned before, the steering wheel is connected to the steering motor (the blue clutch gear moves it). The steering wheel can also be adjusted using click hinges. Also notice the red fire extinguisher on the passenger side:

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Soft grey shock absorbers keep the rear hatch closed/opened:

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Inline 4 clyinder engine is powered by the front motors from the fast outputs via blue rubber belts. They can slip when needed while cornering:

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And finally here's a video where you can see it in action along with more details:

To summarize, thanks to the 3D reference the body is very accurate with almost no straight lines and I'm getting really good at sculpting complex shapes. Great care was also put into keeping the car as light as possible so it reaches over 15 km/h, yet has enough torque to drive/jump over bumps, hills, etc... Thanks to the Audi's hubs, the suspension has a lot of travel and a single (black) hard shock absorber per wheel is enough to support it and absorb the hard landings.

To conclude, I'm really proud of this model, it's a really nice balance of aesthetics, performance, robustness and fun!

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You know it is exactly ugly as original, so you defenetly made great representation of it. Performance is impressive as it is the case with other models thay you developed.

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Looks good, you’ve captured it well.

 Didn’t realise you can overlay surfaces in LDD, wonder if you can do the same in Stud.io ?

 

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Really good. I like that it is not just motorised shell, but also has all details in interior, that there is some fake engine.

I was allready thinking to write, that I'm not fan of motorcycle brake discs as rims, but then I got to real pictures. 

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That's really a good car! I wish I could build something like this! 

I wonder if you plan to share the building instructions or the 3d model? 

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Looks nice and I like how realistic its movement looks! Great feature that the rollcage is structural. Nice work!

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20 hours ago, Zerobricks said:

there are almost no staright lines, almost all the panels are at an angle

I'm in love!:wub:

...very honest man love for rally cars!!! That's my soft spot! And your car is impressive as always!

But why are there rubber bands on the blades? Don't be afraid of loosing pieces, it's a rally car!:laugh:

Oh and i like the red panels you used for the rear lights! Way better (a.k.a. more robust) than a system brick solution!

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20 hours ago, 1gor said:

You know it is exactly ugly as original, so you defenetly made great representation of it. Performance is impressive as it is the case with other models thay you developed.

Thank you for the odd, yet nice praise. And yes, getting a good looking model to also perform well is just icing on the cake!

18 hours ago, Seasider said:

Looks good, you’ve captured it well.

 Didn’t realise you can overlay surfaces in LDD, wonder if you can do the same in Stud.io ?

 

I usuallly find the 3D models online and rescale them in Blender and then use Brick studio, which allows you to make your own bricks to import into LDD.

More info here:

10 hours ago, Jurss said:

Really good. I like that it is not just motorised shell, but also has all details in interior, that there is some fake engine.

I was allready thinking to write, that I'm not fan of motorcycle brake discs as rims, but then I got to real pictures. 

They were just palce holder, indeed. Actually I could import the custom 3D wheels into LDD for final detailing.

2 hours ago, gyenesvi said:

Looks nice and I like how realistic its movement looks! Great feature that the rollcage is structural. Nice work!

Thanks, I tested a lot of different suspension setups until I found one that's compact, resposnive and robust enough. Regarding the rollcage, it actually simplified construction a lot, because it added support to all the funky angles. A normal version of the Ford Fiesta would be much weaker.

1 hour ago, pow said:

I'm in love!:wub:

...very honest man love for rally cars!!! That's my soft spot! And your car is impressive as always!

But why are there rubber bands on the blades? Don't be afraid of loosing pieces, it's a rally car!:laugh:

Oh and i like the red panels you used for the rear lights! Way better (a.k.a. more robust) than a system brick solution!

Glad to please your soft spot :blush: Rubber bands just hold the blades against the body, bacause they are quite floppy and tend to move sideways a lot. I tried making the rear lights using the normal transparent tiles and such, but in the end simple panels ended up being more accurate and simpler.

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Actually Jerry I don't like shapes of modern cars at all; and they are difficult to represent with Lego, but somehow you always managed to nail the shape. That is actually my honest opinion.

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Awesome build, as said by 1gor above already the shape is perfect and on top of that there are numbers great details! 

To be honest i am not a big fan of the color of the rims (although you are ofcourse bond by 3D printing materials in this case), they kinda take the focus (he he) away form the main body, something that would be less present with dark rims i think.

But overall it is just a beauty and i am more than jealous on your skill, hats of!

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Great build, both faithful to the real car and with very nice performance: I would really like to be able to build it someday!

Kudos!

Edited by Celeri

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