Fulfills Steps 3, 4, and 5 of GSUSA Brownie Automotive Engineering badge requirements.
Items Needed:
- 1 sample basic vehicle (pre-built)
- 1 regular ramp for initial movement tests (plain surface, no obstacles)
- 1 or more testing ramps and obstacle pans (one for each emergency scenario the scouts are designing for)
- Vehicle materials per team:
- 1 body
- 4 wheels
- 2 axles (wooden skewers/dowels and plastic straws)
- Thin cardboard or cardstock for extra vehicle features
- Modeling clay, rubber bands, sponges, or hot glue to attach wheels
- Duct tape, glue, markers, scissors
- (Optional Materials) For Flood Vehicles (Floating & Waterproofing): Plastic wrap or tape, Foam pieces or packing peanuts, Deflated small balloons, Paddle-like attachments
- (Optional Materials) For Blizzard Vehicles (Snow Resistance & Stability): Large plastic lids or sponge-covered wheels, Cardboard or foam scoops, Rubber bands wrapped around wheels
- (Optional Materials) For Earthquake Vehicles (Shock Absorption & Durability): Sponges or rubber bands, Foam board or reinforced cardboard, OR Grip tape or textured materials
Obstacle Pan Setup
Prepare three separate obstacle pans, one for each emergency scenario:
- Flood Test:
- Fill a shallow plastic bin with water (just enough for vehicles to float or roll through).
- Test whether vehicles move on water or sink.
- Blizzard Test:
- Spread a thin layer of flour in a tray to represent deep snow.
- Test how well the wheels move through resistance.
- Earthquake Test:
- Place rocks, pebbles, or uneven materials in a tray to simulate damaged roads.
- See if the vehicle can roll over debris.
Testing Ramp Setup
- Set up one regular ramp for initial movement tests (plain surface, no obstacles).
- After rolling vehicles down the ramp, test them in the specific scenario obstacle pan they were designed for (not all three).
- Scouts first test basic movement down the ramp. Then, they test their vehicle in the obstacle pan that matches their chosen emergency type (flood, blizzard, or earthquake).
Instructions (Estimated Total Time: 45–50 minutes):
- Step 1: Build the Basic Vehicle (10 minutes)
- Attach axles by taping straws across the bottom of the vehicle body.
- Connect wheels by inserting skewers through the straws, then securing wheels using clay, sponge pieces, or rubber bands.
- Test if the vehicle rolls straight and adjust as needed.
- Step 2: Strengthen & Customize the Vehicle (10 minutes)
- Scouts use cardboard and extra materials to reinforce their vehicle.
- Add doors, windows, lights, or weather-specific features (plow for snow, flotation for water).
- Step 3: Test for Movement & Extreme Weather (20 minutes)
- Roll the vehicle down a ramp to check basic movement.
- Test the vehicle in its obstacle pan:
- Flood scenario: See if it moves in water.
- Blizzard scenario: Try rolling through flour (snow simulation).
- Earthquake scenario: Test its ability to roll over uneven rocks.
- Wrap-Up Discussion (10 minutes)
- Scouts share their test results and observe how their vehicles performed and brainstorm any improvements they could make.
Possible Modifications for Each Obstacle Pan:
Flood Test (Water Terrain)
- Floating Body: Use lightweight waterproof materials like plastic bottles or foil pans to keep the vehicle from sinking.
- Sealed Components: Cover openings with tape or plastic wrap to prevent water from entering.
- Propulsion: Add paddle-like wheels or attach a small balloon for extra buoyancy.
Blizzard Test (Snow Simulation – Flour)
- Wide Wheels: Use large plastic lids or sponge-covered wheels to avoid getting stuck in soft terrain.
- Raised Axles: Position axles higher to keep the body off the “snow.”
- Snow Plow Addition: Attach cardboard or foam scoops to push through the terrain.
Earthquake Test (Rough Roads – Rocks & Debris)
- Durable Body: Choose rigid materials like foam board or reinforced cardboard to prevent damage.
- Shock Absorption: Add rubber bands or sponges near axles to soften impact over uneven ground.
- Treaded Wheels: Glue textured materials (rubber bands, foam, grip tape) onto wheels for better traction.