1. DESIGN & PRODUCTION OF AN ALL – TERRAIN WHEELCHAIR Andrew Baigrie Connor Henley Jeff Lance Miguel Tovar September 29th, 2005

2. Overview  Personnel Introductions  Product Background  Benchmarking  Qualifying Design Specification  Customer Attributes  QFD  Project schedule

3. Team Introductions Andrew Baigrie  Hometown: Plymouth, MI  Role: Finance Director -Builder/Test Engineer Jeff Lance  Hometown: Birmingham, MI  Role: Design Engineer -Builder/Test Engineer -Team Secretary Connor Henley  Hometown: Casper, WY  Role: Team Liaison -Team Editor -Builder/Test Engineer Miguel Tovar  Hometown: Brighton, MI  Role: Design Engineer -Builder/Test Engineer

4. Product Background Product Complaints  Difficult to navigate over branches, mud, and general obstacles encountered on an off-road trail.  Current 5th wheel has poor mobility  Excessive ride harshness when off-road  Wheels difficult to maintain and use when dirty  Difficult to climb hills in a forward position Modified Invacare A-4

5. Benchmarking Competitive  Quickie XTR Lateral  Four-wheelers

6. Quantifying Design Specifications Benchmarking Results  Force Required to Move Chair: 12 lbs  Weight: 35 lbs  Wheel Base: 38 in.  Wheel Track: 18 in.  Mountain Bike Suspension Travel: 2 in.

7. Customer Attributes  Front and Back  5 th Wheel  Rotate like Castor  Larger, not castor size  Castor Style 5 th Wheel Turning  Easily traverse bumps/uneven terrain  Suspension  5 th Wheel  Maneuverability Off Road Capabilities Primary SecondaryTertiary  Easy to move forward/backward

8. QFD Highest Ratio of Improvement  5th Wheel Modifications  General suspension  Recumbent Seat

9. Project Schedule Major Milestones  Prototype Due: Nov. 23  Build Time: 3+ weeks  Design Freeze: Oct. 21 -Analysis Complete: Oct. 21 -Preliminary Design: Oct. 14

10. Aggressive Design Questions? Contact us: aggressivedesign@umich.edu