Team Members: Ryan Wilson Cody Woods Nate Morefield Mike Kurvach Tri Better Triathlon Shoe Agenda Project Mission Background Design Objectives Concept Selection Process Concepts Comparison Schedule Design Review Purpose Obtain Feedback on Design Concepts Identify Design Problems Project Mission The purpose of this project is to design a triathlon shoe for competition by combining the advantages of a cycling shoe and a running shoe. When successful this project will reduce transition times while maintaining running and cycling performance. Background Triathlon-Swim, Bike, Run Sprint Distance- 750m Swim, 20k Bike, 5k Run Olympic Distance- 1.5k Swim, 40k Bike, 10k Run Transitions: T1- Swim to Bike T2- Bike to Run Pearl Izumi Tri Fly IV Zoot Ultra Race 3.0 Pedal Cages Current Situation Key Objectives in Design Flexibility During Running Good Power Output During Cycling Secure Attachment to Bike Pedal Ability to Clip Out of Pedal with Ease Provide Float Ultimate Goal is to reduce transition times without hurting cycling or running performance Concept Selection Process Good Power Output Dur Concept 1 -Full Length Pedal -Internal Forefoot C- Clip -Heel Clip Advantages: -Rigid Plate Provides Stiffness only when Cycling -Easy to clip out and Transition to Running Disadvantages: -Rubber Sole Hinders Float -Forefoot Clip Components will Add Stiffness During Running -Large Pedals Add Weight to Design -Clipping in Requires Two Motions -EVA Foam will Dampen Energy Transfer During Cycling Risks: -High Weight: Estimated Weight 330g per Shoe 270g per Pedal -Difficulty Working with Carbon Fiber -Energy lost in cycling due to deformation Concept 2 -Removable Rigid Fork -Pedal/Fork Interfacing Clip Advantages: -Ridged Insert is Removed During Run -Compact Pedal -Simple Clipping Concept Disadvantages: -Void in the Shoe After Removing Insert -Lost Energy From EVA Foam Dampening During Cycling -High Stress on Fork Could Cause Failure or Deformation Risks: -High Stress on Fork: 580 MPa in Tension -Aligning Fork and Clip Difficulty -Biomechanical Issues During Run -Failure to distribute pressure from foot -Removing and inserting fork may be difficult Concept 3 -Rigid Hinged Plate -Low Profile Mini Clip Advantages: -Hinged Plate Reduces Excess Movement While Cycling -Hinged Plate Flexes While Running -Pedal Engages Rigid Plate Disadvantages: -Lost EVA Foam Volume for Pedal Clip -Constrained Flexibility While Running Risks: -Determining the Flex Points Common for All Athletes may Prove Difficult -Maybe too Stiff for Running but too Flexible for Cycling -Failure to distribute pressure from clip Comparison Schedule System Design Weeks 4-5 Resource Summary Data Base Weeks 4-5 Analysis Weeks 4-8 Detailed Design Weeks 4-8 Detailed Design Review Week 9 Order Materials Week 10