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

Team MacGyver:

InspirationDan, Jason L, Jason W, Sarah

Back to the Future 2™: Hoverboard Teanage Mutant Ninja Turtles™: Sewer Surfer

Team MacGyver:

CompetitorsDan, Jason L, Jason W, Sarah

E-glideJetDek

ExSkateElectric Scorpion

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

Design ProcessConcept Selection Chart

Steering Suspension Board

snakeboard Suspension mounted Open middle section

electric rotation on axels solid rigid

stepper motor free floating deck

electrically controlled (on rigid chassis)

Motor/power Collapsibility Wheels

dual backwheels telescoping slide air filled

power= 150W, 250W, 400W 1 central hinge solid rubber

2 x 500W two hinges at each end 8" diameter

non-collapssable


Initial Design


Final Design


Exploded View

Suspension

Deck

Wheels

Front Axle

Rear Axle

Thrust Bearing

U-Bolt


Final Specifications

Steering Wheels Suspension Motor/Power

Stepper Motor 7" diameter Possibilities: Single Rear Wheel Drive

Single Pivot Point Solid Rubber Elastomer Shock Absorber 300 Watt Motor

Load on Thrust Bearing built in bearings Air cylinder

Stability from Needle Bearing Compression Spring

Chassis Deck Rear Axle Front Axle

3/4" square wood Rigid 3/4" Diameter 3/4" Diameter

(fiberglassed) Solid ends machined to 1/2" ends machined to 1/2"

wood


Wheel DesignFeatures

• 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


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


Steering Design

Front Axle

Thrust Bearing

Flange-Mounted Bearing

Thrust Bearing Flange-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


Chassis Design

Features

• Material: ¾” square wood

(will later be fiberglassed)

• 90° Angle Connections

• Easy Fabrication

• Quick Fabrication


Motor DesignPropulsion Steering

We need the rear wheel to run at 480 RPM

Calculation for this:

RPM480min 60

hour 1

in 7

cycle 1

hr

in 633600

Applied Motion ProductsModel: 4023-8351.8° per Step212 Oz-in Holding Torque5.1 Volts2.05 Amps4in Length

Tentatively chosen, until a torque calculation is performedSmall angle per step for smooth direction changes

Built in encoder to record position


Suspension Design

Pneumatic Cylinder Compression Spring Elastomers

Possibilities Include:


Rear Axle Design

Axle

• Material: ¾” Steel Shaft

• Machined to ½” at ends

U-Bolt

• Secures Rear Axle to Chassis


Questions?

Documents

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