Ready to put your student's engineering and design skills to the test? This challenge is all about combining creativity, problem-solving, and a little bit of physics.
The mission: design, model, and build a mousetrap-powered car using CAD fundamentals and simple materials.
The Challenge: Build a Car Powered by a Mousetrap
Using the spring-loaded mechanism of a mousetrap, students will design a vehicle that can move forward using only stored mechanical energy. The car can be as simple as everyday household materials or as advanced as manufactured parts, 3D printing, or laser cutting.
The key? Start with CAD design principles before building the prototype.
What Student Designs Should Include:
1️⃣ CAD Fundamentals
- Use software like AutoCAD, Fusion 360, or SolidWorks to create the designs.
- Model all key components: body, wheels, axles, and the mousetrap mechanism.
- Simulate motion where possible to predict performance.
2️⃣ Mechanical Design
- Convert the mousetrap spring energy into forward motion.
- Explore lever arms, string mechanisms, and wheel size for efficiency.
- Optimize for distance, speed, or accuracy.
3️⃣ Materials & Build
- Low-cost, easily available options (cardboard, CDs, wood, tape).
- Advanced builds can incorporate 3D-printed wheels, laser-cut chassis, or machined parts.
- Balance lightweight structure with durability.
4️⃣ Testing & Iteration
- Test multiple variables: wheel size, axle alignment, lever length, friction.
- Collect data on distance traveled, speed, and straightness.
- Refine your design for maximum performance.
🛠️ Project Timeline: 6 to 8 Weeks
| Weeks | Milestone |
|---|---|
| 1 | Research mousetrap car designs & form teams |
| 2–3 | CAD modeling & system planning |
| 4 | Materials selection & prototyping |
| 5–6 | Build, test, and redesign |
| 7 | Final testing & performance evaluation |
| 8 | Presentations and project report |
📋 What students can submit for review
✅ CAD Model: Digital design of the mousetrap car.
✅ Prototype: Functional car built from the design.
✅ Data Report: Testing results, modifications, and performance metrics.
✅ Presentation: Students share their process, challenges, and final outcomes.
🌟 Why This Project?
The mousetrap car challenge is a hands-on way to apply CAD fundamentals, engineering design, and physics concepts. Your students will practice creativity, problem-solving, and iteration all core skills for future engineers. Plus, it’s fun to race classmates’ designs and see whose car goes the farthest!