1. FINAL PRESENTATION
Western Michigan University
Advisors:
Dr. Alamgir Choudhury
Dr. Jorge Rodriguez
4/20/17

2. Introductions
Luis
Matthew
Adam
Andrew

3. Problem Statement
Project Objectives
Design & FEA Analysis
Drawings
Components
Test Data Compared to Analysis
Cost Analysis
Lessons Learned
Conclusions

4. Problem Statement Lower center of mass Reduce amount of hoses/tubes
Completely balanced bicycle
Components can’t interfere with rider
Reduce amount of hoses/tubes
Better weight distribution
Safety

5. Objectives
Design a safe, low-cost, and energy efficient human powered hydraulic vehicle
Develop an environmentally friendly alternative mode of transportation
Meet all criteria and rules specified by the NFPA
Compete in the national design competition
Optimize vehicle performance in all three categories of the competition

6. Design Process

7. Design & Analysis - Frame
Load: 160 lb (rider)
Load: 100 misc lbf (components)
Constraints: 4 locations (dropouts)
Max VM: psi
Max disp: in
Safety Factor of 4

8. Design & Analysis - Top bracket
Load: 100 misc lbf (components)
Constraints: 6 fixed edges (holes of brackets)
Max VM: psi Max disp: in

9. Design & Analysis - Pump / Motor
Motor Brace
Max VM: psi
Max disp: 1.162*e-04 in
Pump Brace
Max VM: psi
Max disp: 1.470*e-04 in

10. Design & Analysis - Hydraulic Circuit

11. Manifold Implementation
Centralizes all flow control devices in the system
Reduces the amount of hoses and fittings, making the system more compact and lightweight

12. Design & Analysis - Manifold

13. Manifold Assembly

14. Drawings - Accumulator Mount

15. Drawings - Reservoir Brackets

16. Drawings - Hydraulic Supports

17. Drawings - Hub, Motor, & Pump Mounts

18. Fabricating Drawings

19. Hydraulic Components 1x Proportional Valve 3x Directional Valves
2x Accumulators
2x Pump/Motors

20. Efficiency of Pump / Motor

21. Mechanical Components
Front Hub: Shimano Alfine
8 Speed, 1 to
Rear Hub: Sram I-3
3 Speed, 1 to

22. Drivetrain

23. Data Comparison Testing was done on pump and motor
Verified the system by using the computer simulation to check the function of the system
Then testing the bike in all 4 modes
Direct drive, charging, discharging, and brake recharging

24. Cost Analysis - Prototype
266 parts
$6,812 cost worth
$1,599 labor cost
$360 assembly cost
$8,771 total cost
$618 spent by team

25. Cost Analysis units

26. Lessons Learned
Develop contingency plans early on
Backup suppliers
Communication among team members
Tubes instead of hoses
Protection of electrical components

27. Results

28. Conclusions
Design is technologically advanced and compact thanks to the manifold
Easy to fabricate custom made parts
Hydraulics and drivetrain are functional, but electronic sensors don’t work as planned
Evenly distributed weight of 224 lbs with fluid

29. Any Questions?