Team MacGyver: Inspiration Dan, Jason L, Jason W, Sarah Back to the Future 2™: HoverboardTeanage Mutant Ninja Turtles™: Sewer Surfer

Team MacGyver: Competitors Dan, Jason L, Jason W, Sarah E-glide JetDek ExSkate Electric Scorpion

Team MacGyver: Dan, Jason L, Jason W, Sarah Design Process Concept Selection Chart SteeringSuspensionBoard snakeboardSuspension mounted Open middle section electric rotation on axelssolid rigid stepper motorfree floating deck electrically controlled (on rigid chassis) Motor/powerCollapsibilityWheels dual backwheelstelescoping slideair filled power= 150W, 250W, 400W1 central hingesolid rubber 2 x 500Wtwo hinges at each end 8" diameter non-collapssable

Team MacGyver: Dan, Jason L, Jason W, Sarah Initial Design

Team MacGyver: Dan, Jason L, Jason W, Sarah Final Design

Team MacGyver: Dan, Jason L, Jason W, Sarah Exploded View Suspension DeckWheels Front Axle Rear Axle Thrust Bearing U-Bolt

Team MacGyver: Dan, Jason L, Jason W, Sarah Final Specifications SteeringWheelsSuspensionMotor/Power Stepper Motor7" diameterPossibilities:Single Rear Wheel Drive Single Pivot PointSolid Rubber Elastomer Shock Absorber300 Watt Motor Load on Thrust Bearingbuilt in bearings Air cylinder Stability from Needle Bearing Compression Spring ChassisDeckRear AxleFront Axle 3/4" square woodRigid3/4" Diameter (fiberglassed)Solidends machined to 1/2" wood

Team MacGyver: Dan, Jason L, Jason W, Sarah Wheel Design Features Load Capacity: 100lbs/wheel Tread/Wheel Material: Rubber Zero Pressure Tire Bearings: Plain Bearings Bore Size: ½” Cost: $10.95/wheel 7” 1.5” Note: 7” wheels will allow user to ride over various terrain

Team MacGyver: Dan, Jason L, Jason W, Sarah Front Axle Design 3-Outlet Connector Secures both pieces of front axle to one another Made from two ¾” steel shafts Vertical shaft machined to ½” at ends

Team MacGyver: Dan, Jason L, Jason W, Sarah Steering Design Front Axle Thrust Bearing Flange-Mounted Bearing Thrust BearingFlange-Mounted Bearing Features Thrust Bearing supports thrust force from rider Flange-mounted bearing supports shear force and allows for smoother rotation Washer with pin (not shown) prevents front axle from falling off

Team MacGyver: Dan, Jason L, Jason W, Sarah Chassis Design Features Material: ¾” square wood (will later be fiberglassed) 90° Angle Connections Easy Fabrication Quick Fabrication

Team MacGyver: Dan, Jason L, Jason W, Sarah Motor Design PropulsionSteering We need the rear wheel to run at 480 RPM Calculation for this: Applied Motion Products Model: ° per Step 212 Oz-in Holding Torque 5.1 Volts 2.05 Amps 4in Length Tentatively chosen, until a torque calculation is performed Small angle per step for smooth direction changes Built in encoder to record position

Team MacGyver: Dan, Jason L, Jason W, Sarah Suspension Design Pneumatic Cylinder Compression SpringElastomers Possibilities Include:

Team MacGyver: Dan, Jason L, Jason W, Sarah Rear Axle Design Axle Material: ¾” Steel Shaft Machined to ½” at ends U-Bolt Secures Rear Axle to Chassis

Team MacGyver: Dan, Jason L, Jason W, Sarah Questions?