1. Design Team #11 1

2.  Team Members Jeffery Aucoin Dima Eshtaya Sean Milley Jamie Zwicker  Team Supervisor Dr. Robert Bauer 2

3. Introduction Existing DesignProposed Design 3 http://www.jacqdesign.com/img/blog/photos/RollerbladeCrossfire 4D.jpg

4. Rubber Stop Pad 4

5. Existing Design  Rubber Pad attached to the heel of one rollerblade  To stop user must push the pad against the ground to create a braking force 5 http://www.skatescool.com/inline-skating/learn-how-to-t-stop- on-inline-skates/

6. Areas of Improvement  Balance and Stability  Difficulty/Technique  Pad Wear and Lifetime  Stopping Distance 6 http://www.skatescool.com/inline-skating/learn-how-to-t-stop- on-inline-skates/

7. Center of Mass 7

8. Testing  Average maximum speed: 30km/h  Average stopping distance from 20km/h: 13m  Video Clip or Picture of Actual Testing 8

9. Requirements of Proposed Design 9

10. Design Requirements 1. Removable 2. Support a 225lb user 3. Improved braking distance 4. Maintain mobility/stability 5. Controlled stop 6. Increased lifetime 7. Serviceable 10

11. Foot Support Wheel Frame and Assembly Power Supply Brake Actuator and Application Control Unit 11

12. Foot Support  Ability to attach over existing footwear  Modify existing snowboard binding Add third strap Adjust mobility of back support 12 http://5150snowboarding.com/product/ff1500

13. Wheel Frame  Housing for all components of the skate  ⅛” Square Channel Iron  Dimensioned to incorporate range of shoe sizes 13

14. Wheel Assembly  All rotating pieces Axles Wheels Bearings Brake rotors 14

15. Electric Band Drum Disk 15

16. Electric/Magnetic Brakes  Good for high speed braking  Provides energy feedback  Brake force diminishes as speed decreases  Cannot lock up 16 http://www.flightglobal.com/blogs/runway-girl/Gear%20shot%201.JPG

17. Band Brakes  High actuator forces due to limited space  Easily serviceable  Susceptible to vibrations 17

18. Drum Brakes  Least actuating force  Complex setup  Not easily serviceable  Poor heat dissipation Prone to brake fade 18 http://auto.howstuffworks.com/auto-parts/brakes/brake-types/disc- brake1.htm

19. Disk Brakes  High actuating forces  High rate of heat dissipation Less susceptible to brake fade  Easily serviceable 19 http://www.jejamescycles.co.uk/product-images-large/avid-juicy-3- hydraulic-disc-brake-40268.jpg

20. Brake Torque Calculations 20

21. Disk Brake Calculations 21

22. Hydraulic Pump Solenoid / Piston Setup Electric Motor with Power Screw and Piston Setup 22

23. Hydraulic Pump  Provides adequate pressure  Too Large in size / weight  High cost 23 http://www.mesltd.co.uk/images/ZSIM21118476.jpg

24. Solenoid / Piston Setup  Provides adequate force  Forces diminishes with displacement  Large power requirement  High current draw 24 http://www.fwmurphy.co.uk/images/RP23xx_solenoid_medres.jpg

25. Electric Motor with Power Screw and Piston  High torque motor  High forces generated  High pressure output  Low power consumption  Low cost, weight and size 25 http://www.robotshop.ca/rbban07 -banebots-planetary- gearmotor.html

26. Power Screw Calculations Power Screw Specs Output Force Output rpm Output Rev/s Torque N*m Torque in*lb Thread Type 4447.41.45412.869 ¼-20 Left Hand Force LbForce N 412.91836.6 26

27. Solar Alternator Manual Battery 27

28. Power Supply  Solar  Alternator  Manual Power  Battery Power 28 http://www.thesource.ca/estore/product.aspx?language=en - CA&catalog=Online&category=RC+Toy+Batteries& product=2300322

29. Hydraulic Lines Wired Wireless 29

30. Hydraulic Lines  Simple Control  Connects user’s hands to feet  Mobility compromised 30 http://media.rei.com/media/dd/84f36172-d484-4224-a6cc-00a2fa3e0ec6.jpg

31. Wired  Additional requirements  Connects user’s hands to feet  Mobility compromised 31 http://ecx.images-amazon.com/images/I/41o%2B2866- lL._SL500_AA280_.jpg

32. Wireless  Additional Requirements  Eliminates physical connection  Mobility maintained 32 http://www.robotshop.ca/polol u-high-power-motor-controller- 1.html http://www.robotshop.ca/dfrobot- usb-microcontroller- atmega168.html http://www.robotshop.ca/sfe-xbee- explorer-regulated.html

33. 33

34. Budget 1 Braking, 1 Non-braking DescriptionQtyUnit PriceTotal PriceTotals Braking Prototype1$100.00 Planetary gear and power screw motor1$35.55 Rotor2$10.00 $20.00 8 x 90mm wheels with bearings1$79.99 Hydraulic brake caliper with lever controlled piston1$150.00 Hydraulic brake caliper1$80.00 Hydraulic fluid1$20.00 Attachment screws and bolts1$20.00 ratchet straps6$9.99 $59.94 strap buckle6$12.99 $77.94 axle rod1$6.50 square channel1$20.00 plastic foot support2$45.00 $90.00 Section Sub-Total $759.92 Wireless Controller Transmitter1$40.00 Receiver1$40.00 Micro Controller1$108.00 Motor Controller1$50.00 Section Sub-Total $238.00 Safety Equipment Helmet1$29.99 Mouth guard1$10.00 Section Sub-Total $39.99 Power source battery pack and charger for actuator motor1$23.99 16 AA batteries for wireless controller1$20.00 Section Sub-Total $43.99 Total Summary sub total $1,081.90 13% tax $140.65 10% miscellaneous $108.19 final total $1,330.74 34

35. Existing Design vs. Proposed Design 35

36. Conclusion 36

37. The End 37