1. Mountain Bike Rear Suspension ME 493 Final Presentation – 2004 Group Members: Heather Landis David Harris Luther Beale Chris Polinsky Academic Advisors: Dr. Chien Wern Dr. David Turcic Dr. David Turcic

2. Mission Statement To design a new mountain bike rear suspension system that responds to terrain inputs while minimizing response to rider inputs better than existing systems. To design a new mountain bike rear suspension system that responds to terrain inputs while minimizing response to rider inputs better than existing systems.

3. Topics Linkage Synthesis Linkage Synthesis Model Model Simulations and Analysis Simulations and Analysis Prototype and Evaluations Prototype and Evaluations

4. Research Project Definition Project Definition Patents and Simulations Patents and Simulations

5. Ideal Axle Path Working Model Simulation Working Model Simulation Linkage Simulations of Existing Designs Linkage Simulations of Existing Designs

6. Linkage Synthesis and Design Hoeken Four-Bar Linkage Hoeken Four-Bar Linkage Goals and Constraints Goals and Constraints Drivetrain Drivetrain Wide Range of Sizes Wide Range of Sizes Reduced Interaction Reduced Interaction

7. Solid Model

8. Solid Model Components

9. Simulations Working Model Working Model Constrained Frame Constrained Frame Full Bike Full Bike Dropping Dropping

10. Simulations Constrained Frame Constrained Frame

11. Simulations Full Bike Full Bike

12. Simulations Dropping Dropping

13. Simulations

14. Finite Element Analysis (FEA) Forces from Working Model Forces from Working Model Bottom Bracket Bottom Bracket

15. Finite Element Analysis (FEA) Forces from Working Model Forces from Working Model Chainstay Chainstay

16. Finite Element Analysis (FEA) Forces from Working Model Forces from Working Model Seatstay Seatstay

17. Manufacturing

18. Manufacturing

19. Assembly

20. Assembly

21. Thank you Bob Turpin Bob Turpin Eric Boulton Eric Boulton Andy Hoffsteader Andy Hoffsteader Bike Gallery Bike Gallery Fox Racing shocks Fox Racing shocks Pacific metals Pacific metals McGuire McGuire BBC metal cutting BBC metal cutting SAPA SAPA