Simple Machine Challenge Pt.1 Mouse Trap Racecar

Total Achievments: 10

Braniac:

Visualize it: Build it:

The price of glory:

We had 23 pieces so it costs $23

Test:

We tested our product before the compitition

Competitor:

I entered my car into the 2nd Annual Mousetrap Racecar Challenge

Feedback:

Game changer:

We came up with the rule that the car has two have atleast 2 axels

Leave it cleaner than you found it:

We cleaned up a couple pieces that were left from the previous group

Design build:

We redesigned our car to use the string more efficently

My First Blog Post!

Hello every one!

This is my engineering blog, welcome.

This is the the logo for the Coronado lacrosse team which I am a part of.

Final

1. Define the problem:

• The problem is there is no good way to store a bike inside a college dorm room.

2. Brainstorm solutions:

• Put hooks on the wall to hang it from.



• Put hooks on the ceiling to hang it from.



• Have single bike rack that can raise up like on buses.

3. Define criteria and constraints:

• No permanant damage



• Must save space in a little room



• Must fit a full sized bike



• Easy to assemble

4. Sketches:






5. Select an approach: usea decision matrix to justify your approach:




6. Model your solution with CAD software: post an isometric view of your assembly and a multi-view drawing:
7. Use the four quadrant feedback technique to assess your model:

Glider CAD Model

Glider Designs

DESIGN PHASE

1) whats the challenge?

To design a glider.

2) brainstorm your solutions

IDEAS: a lot of surface area of wings, biplane design, vertical tail wing.

3) Constaints-

Had to use the supplied paper and balsa wood, can use tape or glue to hold together.

TEST PHASE

DESIRABLE OUTCOMES:

• The glider has very good lift


• The glider is very light

OUTCOMES TO CHANGE:

• Slightly pulls to the right


• Pulls up then stalls if not thrown hard

QUESTIONS RAISED:

• How to fix the pull to the right


• How to make it go faster

IDEAS GENERATED:

• Add more wieght to keep from pulling up


• Put a stabalizing wing to keep from drifting right

Iteration #1

JUSTIFICATION IN RED

ACHIEVEMENTS EARNED: 15

Idea Generation Achievements-

• Sketch of one possible solution


• Generate a list of achievements for build day


• Document a plan to ensure materials are brought in on block day

Build Achievements-

Material Size-

• Your material fits inside a printer paper box


• Your material fits inside a shoe box

Our design was small enough to fit inside the shoe box.

Material Weight-

• Your materials weigh less than 500 grams


• Your materials weigh less than 300 grams


• Your materials weigh less than 200 grams


• Your materials weigh less than 150 grams


• Your materials weigh less than 100 grams


• Your materials weigh less than 50 grams

Our design weighed 49 grams.

Drop Achievements-

Drop Accuracy-

• NONE

Our egg broke before we dropped it.

Egg Resilience-

• Your egg broke but the yolk remained intact


• Your egg cracked but the yolk remained inside and intact


• Your egg cracked but was still together

Our egg was only cracked.

Calculation Achievements-

• NONE

We didn't use any math with our design.

Other Achievements-

• Help set up the bulls eye

Fred and i set up the bulls eye on drop day.

The designs that seemed to work best for my class were the ones that were very simple, light, and had a lot of padding around the egg.

If i were to redesign my solutions, I would use less rubber bands and more cotton balls because the rubber bands put to much pressure on the egg.