1. Golden Wheels
A Revolutionary Mobility Scooter
for an Active Lifestyle in
the Golden Years

2. Golden Team
Dr. Johnson
Faculty Advisor
Ahmed Al Munayan Mahdi Al Nasir Alvano Calvillo Jason Sorenson Rafael Valdez
Mechanical Mechatronic Mechatronic Mechanical Mechanical
Project
Manager

3. The Sponsor’s Background
Private sponsors
David and Karen French.
1. Traveling in the Golden
Years
2. Health
3. Needs
4. Solution

4. 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

5. Golden Wheels Final Design
Folded
Length = 34 in.
Width = 28 in.
Height = 15 in.
Unfolded
Length = 65 in.
Width = 28 in.
Height = 40 in.

6. Motor Sizing

7. 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

8. Peripherals
1. Brake (Will be altered)
2. Battery charge indicator
3. Throttle (Will be altered)
4. Display
5. (2x) Lithium Battery - 36V,
8AH

11. Highest Stress on a
Single Fork

12. Solidworks
Simulation
Dynamic Load of 500 lb.
(middle bar)

13. F.S = 2 F.S. = 1.25 Yielding stress
Change 1.5 in. to 2.38 in.(O.D.) 2.23 (I.D.)

14. Design Parts
Raw Material- Aluminum 6061-T6

15. Some Purchased Parts:

16. Total Cost Excluding Labor

17. Total Project Cost = $152472

18. 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 $

19. Case to Move Forward
Did the problem solve?
Can it be accomplished on time?
Can it be accomplished within the budget?

20. Conclusion
● The problem
● Mission
● Budget

21. Questions?

22. Customer Requirements:
(Qualitative)
Must Do: Should Do:
1. Collapsible
2. Light weight
3. Turning radius
4. Charge
5. All terrain
6. Power
7. User friendly
a. Stable
b. Comfortable
c. Safety
d. Easy on arthritic hands
1. Adjustable
2. 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

23. 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

24. Motor Sizing

26. Motor speed 3 Miles Per Hour
degrees power needed torque needed
0 177 20
4 323.5 37
10 542 62
Power Torque Degree

27. 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
0.008
bicycle tire on rough paved
road
0.01 - 0.015 ordinary car tires on concrete
0.03 car tires on tar or asphalt

28. Gantt chart - Fall Semester

29. Gantt chart - Fall Semester

30. Gantt chart - Spring Semester