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Trapped!. 60 °. The Concept. To create a vehicle, using no power sources outside of two mouse trap springs, that has the ability to climb a rope coming out of the ground at approximately 60 °. Initial Design Concept. Frame. Drive Wheel. Traction Wheel. Gears. Frame. Design Components.
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Trapped! 60°
The Concept To create a vehicle, using no power sources outside of two mouse trap springs, that has the ability to climb a rope coming out of the ground at approximately 60°.
Initial Design Concept Frame Drive Wheel Traction Wheel Gears Frame
Design Components • Frames
Frames Steel Axles Design Components
Frames Steel Axles Aluminum Axles Design Components
Design Components • Frames • Steel Axles • Aluminum Axles • Gears
Design Components • Frames • Steel Axles • Aluminum Axles • Gears • Drive and Traction Wheels
Design Components • Frames • Steel Axles • Aluminum Axles • Gears • Drive and Traction Wheels • Springs
Design Components • Frames • Steel Axles • Aluminum Axles • Gears • Drive and Traction Wheels • Springs • Screws
Cost / Weight Analysis • PVC Frames – 2x .04 lbs @ $0.40 / lbs = $ 0.032 • UHMW Drive & Traction Wheels – 2x .05 lbs @ $0.48 / lbs = $ 0.012 • Plastic Gears – 2x .0125 lbs @ $5.00 / lbs = $ 0.125 • Steel Gear – 1x .01 lbs @ $1.67 / lbs = $ 0.0167
Cost / Weight Analysis Con’t • Screws – 2x .0025 lbs @ $1.67 / lbs = $ 0.00835 • Steel Axles – 2x .005 lbs @ $1.67 / lbs = $ 0.0167 • Aluminum Axles – 2x .0025 lbs @ $5.00 / lbs = $ 0.025 • Mouse Trap – 2x $0.30 = $ 0.60 Cost of Materials $ 0.83575 per unit
Total Production Cost Labor Cost: 10 minutes of assembly *5.15/hour (min wage) = $0.88 / vehicle TOTAL COST $0.84 + $0.88 = $1.72
Pending Design Modifications • More rigid driving axle • Thicker gears • Horizontal alignment (gears) • Adjustable tension wheel • Better traction
Benefits and Advantages • Weight -- .225 lbs • Size • Cost • Aesthetics • The next model will climb the rope!