3D Derby Description

3D Derby Main Event:

Event Description:

In this event, teams of 2-4 students will design a car and then print it on a 3D printer. Teams will then add axels/wheels and then test them to prepare to race at the tournament.  Teams will also submit a Design Document outlining some of the key aspects of the process. Design Documents must be converted to a PDF file before uploading to the TOT App Submission Portal by March 6, 2020.

Common Core Standards and 4 C’s:

Use technology, including the Internet, to produce and publish writing and present the relationships between information and ideas clearly and efficiently. Creativity, Collaboration, Communication, and Critical Thinking.

Designing and Creating your Project:

  • The process of creating your project should take on the following steps:
  • Research car designs and their effect on speed.
  • Use a 3D program such as SketchupMake to create an original model of your car.
  • Print your car on a 3D printer.
  • Attach axels and wheels to your car and begin testing on a ramp.
  • Bring your car to the tournament and race to see who’s the fastest.

Technical Requirements and Specifications:

  • The car must be completely drafted by the students. Cars will be designed and printed prior to the competition, using 3D modeling software and the MakerBot 3D Printers.
  • The entire car (body, wheels, axels…) must weigh 100 grams or less.
  • Car dimensions must be no larger than 5” long x 2.5” wide x 2” tall. (127mmx63.5mmx51mm)
  • There must be more than 1/4” (6.35mm) clearance under the car between the wheels.
  • There must be more than 1 5/8” (41.275mm) between the wheels. See Track Specifications here.
  • The entire car must be printed, the only exception is the nails/screws and weights.
  • The car may be printed in pieces and then assembled with glue.
  • Teams must also submit a Design Document by 10:00 pm March 6, 2020, to the TOT App Submission Portal.

3D Derby Design Document:

Overview:

Students will create a document outlining the process of designing and testing their car. There will be four main sections: Research, Specifications, Testing, and Conclusion. The document will be submitted and scored prior to the tournament and will be worth 30 points. Design Documents must be converted to a PDF file before uploading to the TOT App Submission Portal no later than 10:00 pm by March 6, 2020.

Research:

In this section, students will select a question or concept related to the project and use the internet or other sources to search for information and solutions.

Students may investigate their own question, or choose one from the list below:

  • Do large or small tires make a car go faster?
  • What does a spoiler do on a car?
  • How does mass affect a car’s speed down a ramp?
  • What role does friction play in a car’s tires?

Specifications:

In this section, students will list specific measurements of their car such as mass, dimensions, and wheel diameter and thickness. They will also include screenshots of their car in the design stage as well as a picture of their assembled car.

Testing:

Students will explain the testing of their car and what modifications they made to improve its speed. This could include physical changes to the car such as smoothing/sanding the body or wheels, adding a spoiler or anything else. It should also include testing of lubricants on the axels. Students should include a data table showing the results of different trials.

View Example Table below:

Trial

Time

Modifications

1

10.2 s

 None, just attached the wheels to the car body.

2

9.2 s

 Smoothed the axle hole of the wheels and smoothed the outer edges of the wheel.

3

7.2 s

 Used lubricant A on the axles.

4

8.4 s

 Used lubricant B on the axles.

5

7.7 s

 Used lubricant C on the axles.

 

 

 

 

 

 

 

 

 

 

 

Conclusion:

In the last section, students will write a conclusion which summarizes the modifications to their final car. They will explain why they chose certain adjustments and modifications over others citing their testing and results.

Getting Help:

Visit the 3D Derby Design Documents Page to see a sample Design Document and Event support files and our new YouTube Channel to view tutorials to help prepare and practice.

Contact Anthony Sombat at Anthony.Sombat@fresnounified.org  or Robert Donat at Robert.Donat@fresnounified.org if you have any further questions or suggestions regarding this future competition event.


3D Derby Reward Points:


Scoring Breakdown Description / Formula Max Points
Online Design Document 30
Online Car Design 20
Live Event Time Fastest Time of Tournament/Your Time X 25 25
Live Event Rank 25 - 3(Your Rank - 1) 25
Design Document Scoring Rubric
Category Exemplary Proficient Partially Proficient Incomplete

The question or concept is well answered and relevant to improving the speed of the car.

The question or concept is very well answered and relevant to improving the speed of the car.

The question or concept is well answered and somewhat relevant.

The question or concept is somewhat answered but not that relevant.

The question or concept is not at all answered and not relevant.

Multiple reliable sources have been referenced or cited in the research.

3 or more very reliable sources have been referenced or cited in the research.

2 reliable sources have been referenced or cited in the research.

Just 1 somewhat reliable source was referenced or cited in the research.

There were no sources referenced or cited in the research.

The measurements of the car are clearly listed with multiple screenshots and pictures.

All measurements are listed and there are 5 or more screenshots or pictures.

All measurements are listed and there are 3 screenshots or pictures.

Some measurements are listed and there is just 1 screenshot or picture.

Most of the measurements are missing and there are no screenshots or pictures.

There was significant testing to improve the speed of the car.

5 or more modifications were very clearly described in the testing.

3 modifications were clearly described in the testing.

Fewer than 3 modifications were somewhat described in the testing.

There were no adjustments or modifications described in the testing.

A clear and detailed data table was included to show results of the testing.

The data table was very clear and easy to read with multiple entries and detailed results.

The data table was clear with but lacked specific detail.

The data table was confusing and lacked detail.

There was no data table in the design document.

The conclusion clearly states what was done to improve the car.

The conclusion is a well written summary of what was done and cites specific evidence from testing and research.

The conclusion is a summary of what was done to the but lacks evidence from testing and research.

The conclusion is a weak summary of what was done and is lacking detail.

There is no conclusion in the design document.
Car Design Scoring Rubric
Category Exemplary Proficient Partially Proficient Incomplete

The car design is complex, creative, and realistic.

The car design has multiple dimensions, many curves, and looks very realistic.

The car design has some dimension, some curves, and is realistic.

The car design is very boxy and basically a 2D outline pushed into 3D.

The car design is simply a rectangular box with wheels.

The car has many 3D details such as windows, lights, grills, vents, spoiler, exhaust pipes, fenders, trim….

The car is very complex with 5 or more well designed details.

The car is somewhat complex with 3 or more details.

The car has at least 2 details.

There are no details on the car at all.

The digital model has colors for paint, windows, lights, wheels, rims, grills, undercarriage….

The digital model is very realistic with 5 or more well chosen colors.

The digital model has 3 or more well chosen colors.

The digital model has just one color.

The digital model is unpainted and just white.

The wheel design is complex, creative, and realistic.

The wheel design has multiple dimensions, detailed rims, and looks very realistic.

The wheel design is flat with simple rims and is realistic.

The wheel design is flat with very little dimension.

The wheel design is basically just a simple cylinder.
Time Scoring Rubric
Category

Average time from races.