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DESIGN & PRODUCTION OF AN ALL – TERRAIN WHEELCHAIR

DESIGN & PRODUCTION OF AN ALL – TERRAIN WHEELCHAIR. Andrew Baigrie Connor Henley Jeff Lance Miguel Tovar September 29th, 2005. Overview. Personnel Introductions Product Background Benchmarking Qualifying Design Specification Customer Attributes QFD Project schedule.

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DESIGN & PRODUCTION OF AN ALL – TERRAIN WHEELCHAIR

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  1. DESIGN & PRODUCTION OF AN ALL – TERRAIN WHEELCHAIR Andrew BaigrieConnor Henley Jeff LanceMiguel Tovar September 29th, 2005

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

  3. Team Introductions Connor Henley • Hometown: Casper, WY • Role: Team Liaison • Team Editor • Builder/Test Engineer • Andrew Baigrie • Hometown: Plymouth, MI • Role: Finance Director • Builder/Test Engineer Jeff Lance • Hometown: Birmingham, MI • Role: Design Engineer • Builder/Test Engineer • Team Secretary 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. Primary Secondary Tertiary Front and Back Suspension 5th Wheel Rotate like Castor Off Road Capabilities 5th Wheel Larger, not castor size Castor Style 5th Wheel Turning Maneuverability Easily traverse bumps/uneven terrain Easy to move forward/backward Customer Attributes

  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

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