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LEGO Derby Car Dimensions

Version_2.jpg LEGO Derby Car Dimensions
2019-04-03_06.43.00.jpg LEGO Derby Car Dimensions
2019-04-03_06.42.17.jpg LEGO Derby Car Dimensions
2019-04-03_06.39.40_HDR.jpg LEGO Derby Car Dimensions
2019-04-03_06.43.22.jpg LEGO Derby Car Dimensions
Version_1.jpg LEGO Derby Car Dimensions
LEGO_Car_Dimensions_2019.png LEGO Derby Car Dimensions
789558d59c77746b1a0d21302528ccba.png LEGO Derby Car Dimensions
261efea0e5c8201c3a22108012d222e7.png LEGO Derby Car Dimensions
LEGO_Car_Dimensions.stl LEGO Derby Car Dimensions
LEGO_Car_Dimensions_v2.stl LEGO Derby Car Dimensions
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Creation quality: 5.0/5 (1 vote)
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F3D and STL Folder details Close
  • Car_Dimensions_Check_v2.f3d
  • LEGO_Car_Dimensions.stl
  • LEGO_Car_Dimensions_v2.stl

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Publication date 2021-02-25 at 16:11
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Published to Thingiverse on: 2019-04-03 at 18:16
Design number 314105
ddpruitt

ddpruitt

3D printer file info

3D model description

My daughter entered a Girl Scouts LEGO Car Derby. There were specific rules as to the size of the car so I wanted a quick way to determine if the car was "legal".

The dimensions for the contest were different than for a regular Pine Car derby but they are close. The main dimensions I've seen are the minimum clearance (3/8") and the weight (5 oz).

I made the first version but during the contest I notice that a lot of the contestants violated the rule about a 1/2" flat front nose but using a "forked" front nose, which would give them a starting advantage and therefore not allowed. Because of that I modified the original design to include the check for the 1/2" flat front nose.

Basically if the car extends out the front, back or top it is too big. If the car cannot roll across onto or off it, or it drags along the center rise then the wheel clearance is too small.

If the car is too wide to fit in the box then the car is too wide.

The weight we used a scale.

I included the Fusion 360 file so if you want to change the dimensions you can. Modify the user parameters and the model should update automatically.

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