1. P09009 Wheelchair Design Benchmarking

2. Agenda Components – Foldable Drive Mechanisms – Push-rims – Rims – Tires – Castors Existing One-Arm Wheelchairs

3. Foldable Drive Mechanisms

4. Push-rims Metal Push-Rims Disadvantages Cold Slippery Advantages Durable Rubberized Push-Rims Disadvantages Lack of durability More expensive Advantages Comfort

5. Rims (Source 1) (Source 2) Spoke Rims Lighter but require more maintenance Absorb shock better Mag Rims Heavier, but relatively indestructible

6. Tires Pneumatic Tires (Source 3) Advantages: Lighter Better shock absorbing Adequate traction on most terrain Disadvantages: Maintenance Flats and air leaks Pneumatic w/Insert (Source 4) Advantages: Flat resistant Longer tire life Disadvantages: More expensive Less traction Less shock absorbent Solid Plastic (Source 6) Advantages: Least expensive Flat proof Disadvantages: Absorbs shock very poorly Heavier

7. Contrast of Tires 1-3, Pneumatic; 4, Pneumatic w/Insert; 5, Solid Plastic (Source 5)

8. Castors Castors are similar to tires – SoftRoll castors absorb shock better than many other castors Soft Roll Castors (Source 7) Solid Castors (Source 8)Pneumatic Castors (Source 9)

9. Complete Wheelchairs Basic folding wheelchair 37 lbs. 2-Arm Operation Adjustable footrests Padded Armrests Push-to-lock brakes Price: $109 Basic Wheelchair (Source 10)Lightweight Wheelchair (Source 12) Adjustable armrests 28 lbs Adjustable height backrest Rear wheel options Foldable Seat cushion Price: $780

10. Tracer SX5 (Made by Invacare) Tracer SX5 2-Arm Wheelchair (Source 11) Tracer SX5 1-Arm Wheelchair Push-to-stop brakes 33 lbs Possible 1-Arm Operation (With foldable axle) Price: $1000 (with 1-Arm operation configuration)

11. References 1. http://www.edmond-wheelchair.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=EWRS&Product_Code=W06234008http://www.edmond-wheelchair.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=EWRS&Product_Code=W06234008 2. http://www.edmond-wheelchair.com/skyway_wheels.htmhttp://www.edmond-wheelchair.com/skyway_wheels.htm 3. http://www.spinlife.com/spintips/details/k/Wheelchair%20Wheel%20Choices/a/104/c/2http://www.spinlife.com/spintips/details/k/Wheelchair%20Wheel%20Choices/a/104/c/2 4. http://www.schwalbetires.com/files/x_img_rightrun_all.gifhttp://www.schwalbetires.com/files/x_img_rightrun_all.gif 5. http://www.colourswheelchair.com/images/accessories/tires.jpghttp://www.colourswheelchair.com/images/accessories/tires.jpg 6. http://www.spartech.com/images/wheelchair-wheels.jpghttp://www.spartech.com/images/wheelchair-wheels.jpg 7. http://www.edmond-wheelchair.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=EWRS&Product_Code=W00400658http://www.edmond-wheelchair.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=EWRS&Product_Code=W00400658 8. http://www.edmond-wheelchair.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=EWRS&Product_Code=W00610458http://www.edmond-wheelchair.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=EWRS&Product_Code=W00610458 9. http://www.edmond-wheelchair.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=EWRS&Product_Code=W00610158http://www.edmond-wheelchair.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=EWRS&Product_Code=W00610158 10. http://www.spinlife.com/Drive-Medical-Spirit-Standard-Wheelchair/spec.cfm?productID=84993http://www.spinlife.com/Drive-Medical-Spirit-Standard-Wheelchair/spec.cfm?productID=84993 11. http://www.invacare.com/cgi-bin/imhqprd/inv_catalog/prod_cat_detail.jsp?s=0&prodID=TRSX5&catOID=nullhttp://www.invacare.com/cgi-bin/imhqprd/inv_catalog/prod_cat_detail.jsp?s=0&prodID=TRSX5&catOID=null 12. http://www.spinlife.com/Sunrise-/-Quickie-Quickie-LX-Lightweight-Wheelchair/spec.cfm?productID=217http://www.spinlife.com/Sunrise-/-Quickie-Quickie-LX-Lightweight-Wheelchair/spec.cfm?productID=217