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Golden WheelsA Revolutionary Mobility Scooterfor an Active Lifestyle inthe Golden Years
Golden Team
Dr. Johnson Faculty Advisor
Ahmed Al Munayan Mahdi Al Nasir Alvano Calvillo Jason Sorenson Rafael Valdez Mechanical Mechatronic Mechatronic Mechanical Mechanical
ProjectManager
The Sponsor’s Background
Private sponsorsDavid and Karen French.1. Traveling in the Golden
Years2. Health3. Needs4. Solution
Requirements Engineering Specification
US Unit Method/ Device Condition Target
Climbing Slope Incline Degree Digital Level Average of Sidewalk Curve
4 degrees
Range (All Terrain) Distance Traveled Mile Map Sunny Day 6 miles
Light Weight Weight Pound Scale By Parts 21 lbs per piece
Specifications and Targets
Golden Wheels Final Design
FoldedLength = 34 in.Width = 28 in.Height = 15 in.
UnfoldedLength = 65 in.Width = 28 in.Height = 40 in.
Motor Sizing
18” Golden Motor● Integrated motor controller
● Brushless and gearless
● Multi-Voltage [24v, 36v, 48v]
● Multi-output power [250w-1000w]
● Built in cooling fan
● Regenerative braking
● Overheat and overload protection
● Plug and play integration harness
Peripherals1. Brake (Will be altered)
2. Battery charge indicator
3. Throttle (Will be altered)
4. Display
5. (2x) Lithium Battery - 36V,
8AH
Highest Stress on aSingle Fork
Solidworks Simulation
Dynamic Load of 500 lb. (middle bar)
Factor of Safety and Stresses
F.S = 2 F.S. = 1.25 Yielding stressChange 1.5 in. to 2.38 in.(O.D.) 2.23 (I.D.)
Design PartsRaw Material- Aluminum 6061-T6
Some Purchased Parts:
Total Cost Excluding Labor
Total Project Cost = $152472
Total Actual Cost Source of funding
Sponsor funding 3000 $
spend 85%. 2,550 $
Taxes & (15% for university)
175 $
Fine 2,375 $
Total cost with labor
Raw material 120 $
purchased Parts 2122 $
Fabrication labor 100 $
Total 2341.35 $
Case to Move Forward
Did the problem solve?
Can it be accomplished on time?
Can it be accomplished within the budget?
Conclusion● The problem
● Mission
● Budget
Questions?
Customer Requirements:(Qualitative)
Must Do: Should Do:
1. Collapsible 2. Light weight3. Turning radius4. Charge5. All terrain 6. Power7. User friendly
a. Stableb. Comfortablec. Safetyd. Easy on arthritic hands
1. Adjustable2. Weather resistance
Would Be Nice:
1. Able to load the Wheels on the sedan by driver alone
2. Controllable by other means to move if driver is not seated
3. Should also meet Medicare funding qualifications
Requirements Engineering Specification
US Unit Method/ Device Condition Target
Climbing Slope Incline Degree Digital Level Average of Sidewalk Curve
4 degrees
Range (All Terrain) Distance Traveled Mile Map Sunny Day 6 miles
Light Weight Weight Pound Scale By Parts 21 lbs per piece
Specifications and Targets
Motor Sizing
Motor speed 3 Miles Per Hour
degrees power needed torque needed
0 177 20
4 323.5 37
10 542 62
Power Torque Degree
http://www.engineeringtoolbox.com/rolling-friction-resistance-d_1303.html
Common rolling resistance coefficients
0.001 bicycle tire on wooden track
0.002 - 0.005 low resistance tubeless tires
0.002 bicycle tire on concrete
0.004 bicycle tire on asphalt road
0.005 dirty tram rails
0.006 - 0.01 truck tire on asphalt
0.008bicycle tire on rough paved
road
0.01 - 0.015 ordinary car tires on concrete
0.03 car tires on tar or asphalt
Gantt chart - Fall Semester
Gantt chart - Fall Semester
Gantt chart - Spring Semester
