By Lee Kirwin, Noah Smith, Walker Longworth, and Samuel Parral

Task OutlineNoah Smith – Team Project CoordinatorSamuel Parral – Design CoordinatorWalker Longworth – Testing CoordinatorLee Kirwin – Presentation Coordinator

Design Flowchart

First our group decided what kind of car we wanted to build. We decided to compete with a car designed for distance.

After talked about the kind of car we wanted to design and build, our design Coordinator started designing our car on AutoCAD.

After we have our design, we will get all of our materials.

After we have all of our materials we will cut them all to shape and size.

When we have our materials cut to size and our wheels in place, we will start the assembly.

We started to put our materials into a car. We used the wood and straws and pieces of a fishing rod for the axels and chassis.

After we had the initial chassis built we built the mousetrap device using hot glue, tape, rubber band, and a fishing pole.

Our first test went well we wound the string around the axel and let go. It went further than we thought it would go.

We made some revisions and tested it again.

Labeled design schematic

DesignWe thought over the design of our car, and

eventually agreed that the fishing pole would work best with the mousetrap for power. We had to eliminate problems such as a weak chassis at first, which we fixed by replacing it with a stronger material. The same happened with the axles. The chassis went from K’nex to balsa wood, and the axles from K’nex to pieces of fishing pole.

ContinuedWe worked as a group to build the project.

We each worked on certain parts and brought in materials that without, we wouldn’t have been able to build the car as planned.

Pictures

1 5 1.36 3.676470588

2 10 2.87 3.484320557

3 15 3.3 4.545454545

4 20 4 5

5 25 4.84 5.165289256

6 30 5.58 5.376344086

7 35 6.58 5.319148936

8 40 7.27 5.502063274

45 8.03 5.603985056

TimeDistanceTest Velocity

Velocity graph

ExplainedThe velocity of our car steadily increased as

it became faster. It remained steady most of the time, dropping then rising only twice. The highest velocity we received was at 6.58 seconds.

Acceleration Graph

1 5 1.36

2 10 2.87

3 15 3.3

4 20 4

5 25 4.84

6 30 5.58

7 35 6.58

8 40 7.27

45 8.03

Test Distance Ft. Time

Acceleration graph.

ExplainedThe speed of our car decreased as the string

ran leaving it with no power source. After the string was gone, it relied on the weights on the wheels to push it the rest of the distance. We noticed a slight drop and increase in speed between the five and ten foot mark.

Revision flow chart

After our first test, we decided to change the length of the draw string.

Then after our second test we decided to change the wheels from, K’nex wheels to cd’s

We had to re-glue the straws many times which gave the axel room to spin.

The final fixing was to put weights on the wheels so it would keep moving even after the acceleration had stopped.

A revision.

Revised design We tested our and it did not do so well.We made some revisions to our car.The revisions we made: We put cd wheels on itWe added weight to the wheels so they would

turn faster and with more power.We shortened our stringWe also centered our fishing rod.

SummaryIn the beginning, we experienced problems

with our car, but through teamwork, we sorted through them. Doing this enabled us to build a working car, capable of traveling up to and possibly over sixty feet.

Video

Pictures