Engineering Graphics & Design Technology
3D Design Derby 2008

ENTRY SPECIFICATIONS

Students should export/save their race car in a .STL format using sparse fill and get it to one of the 3D printer locations for printing. The average printing time is about 6 hours per car so please plan ahead. The model will be printed on a 3D printer, by appointment, at one of the following locations; Utah Valley University, Wasatch High School, Lone Peak High School, Pleasant Grove High School, Payson High School, Mountain View High School, Lehi High School, Springville High School, or Timpanogos High School. Make sure the assembled car does not exceed the dimensions of 2.75"wide x 3"tall x 7"long, this includes the wheels.

Each contestant has a number that will be displayed on all items entered, drawings and car. The number of each contestant will be included in the packet with the wheels, axles, and hubs. Display the number prominently on all entered items. The number on the car should be visible and needs to be engraved or embossed as part of the design.

The model needs to have a cavity and a door designed to add and remove weight as needed to meet the 5 oz. at weigh-in. There will be no weight glued or taped to the outside of the car.

If you plan on painting your car, we recommend you use a primer first to seal the pores in the plastic. Make sure the paint is dry at check-in. Remember that the weight of the car can not exceed 5 oz. at weigh-in. No changes to the car can be made after the weigh-in.

Stay away from sharp or thin sections in your design, they will break off or some apart. Experiment with fillets in your designs.

UVU will supply the wheels, solid axles, and hubs for all entries. See the drawing for sizes. Make sure you give enough clearance so everything will fit and rotate smoothly. The curved section of the track has a radius of 46.2826", make sure the front and back of the car clears the track guide section.

Lubrication for the wheels and axles can be graphite or silicone, we recommend silicone, however it's your choice.

Design sketch, detailed drawings, and a rendered drawing must be received by Monday, 4:00pm, April 21, 2008 at the UVU Computer Science & Engineering Building room CS-704. Make sure the contestant number is easy to see and on everything entered. We recommend planning ahead and submitting your materials the week before the deadline, don't get caught in traffic. Remember the office (CS 704) is closed at 4:00 p.m.

The submittal packet should be neatly arranged and in order as follows:

• First-top--Rendered drawing, isometric, or perspective print on 8 1/2"x 11" paper. Printed in black & white or color.
• Second---Detailed drawings--printed on a Max of 11"x17" paper. Printed in black & white. Do not submit more than 3 sheets of detailed drawings.
• Third-last-Design Sketch--Freehand sketch (basic shape of car, how the cavity and door will work, where and how the car # will be done, how the axles will be designed to clear the track and car, etc..) on 8.5"x 11" graph paper. 3 sheets Max.
  
  Group the drawing packet together in proper order and staple in top left corner.

Points will be awarded for the Car Race and the Drawing Packet as follows:
1st place..........40 pts
2nd place.........38 pts
3rd place..........36 pts
4th place..........34 pts
5th place..........32 pts
6th place..........30 pts
7th place..........28 pts
8th place..........26 pts
9th place..........24 pts
10th place........22 pts
11th place........20 pts
12th place........18 pts
13th place........16 pts
14th place........14 pts
15th place........12 pts
16th place........10 pts
17th place........8 pts
18th place........6 pts
19th place........4 pts
20th place........2 pts

Note: According to the point distribution, the fastest car may not win the competition. Speed is only one factor in the contest.

While the cars are waiting to race they will be displayed for the public to view, at that time the BEST IN SHOW car will be judged.

If you wish to weigh your car prior to the race and run it down the track, you need to contact Steven Trane for the times and dates set up for trial runs.

1. An application must be filled out for each entry.
2. After your application is received you will be sent an entry number that will appear on all entries, car, design drawings, detail drawings, and the rendered drawing. You will also be given your wheels, axles, and the final specifications.
3. Design drawings, detail drawings, and rendered drawing must be submitted by Monday, April 21, 2008 4:00 p.m., 3 weeks prior to the race at UVU.